May 20, 2014

Google Play Services 4.4 released

by： And.coding 0 comments

May 19, 2014

Save something in SharedPreferences using SharedPreferences.Editor

If you want to save something (String, setting, value...) in SharedPreferences, such that it can be retrieved later after Activity exited, we can use SharedPreferences.Editor.

Example:

package com.example.androidsharedpreferences;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;

public class MainActivity extends Activity {
 
 String[] dayOfWeek = {"Sunday", "Monday", "Tuesday",
   "Wednesday", "Thursday", "Friday", "Saturday"};
 
 EditText editText;
 Button buttonSave;
 Spinner spinner;
 
 SharedPreferences prefs;
 final String KEY_SavedText = "Saved Text";
 final String KEY_SavedSel = "Saved Selection";

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  editText = (EditText)findViewById(R.id.edittext);
  buttonSave = (Button)findViewById(R.id.save);
  spinner = (Spinner)findViewById(R.id.spinner);
  
  ArrayAdapter<String> adapter = 
   new ArrayAdapter<String>(this, 
    android.R.layout.simple_spinner_item, dayOfWeek);
  adapter.setDropDownViewResource(
   android.R.layout.simple_spinner_dropdown_item);
  spinner.setAdapter(adapter);
  
  //retrieve saved preferences
  prefs = getPreferences(MODE_PRIVATE);
  String prefsString = prefs.getString(KEY_SavedText, null);
  if(prefsString != null){
   editText.setText(prefsString);
  }
  int prefsInt = prefs.getInt(KEY_SavedSel, -1);
  if(prefsInt != -1){
   spinner.setSelection(prefsInt);
  }
  
  //Save EditText if buttonSave clicked
  buttonSave.setOnClickListener(new OnClickListener(){

   @Override
   public void onClick(View v) {
    SharedPreferences.Editor editor = getPreferences(MODE_PRIVATE).edit();
    editor.putString(KEY_SavedText, editText.getText().toString());
    editor.commit();
   }
  });
  
  //Save Spinner selection
  spinner.setOnItemSelectedListener(new OnItemSelectedListener(){

   @Override
   public void onItemSelected(AdapterView<?> parent, View view,
     int position, long id) {
    SharedPreferences.Editor editor = getPreferences(MODE_PRIVATE).edit();
    editor.putInt(KEY_SavedSel, position);
    editor.commit();
   }

   @Override
   public void onNothingSelected(AdapterView<?> parent) {}
  });

 }

}


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.androidsharedpreferences.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="android-coding.blogspot.com" />
    
    <EditText
        android:id="@+id/edittext"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Button
        android:id="@+id/save"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Save Text" />
    <Spinner
        android:id="@+id/spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

by： And.coding 2 comments

May 14, 2014

Display TextView with multi-color

This example show how to display TextView with multi-color, using Html.fromHtml() and SpannableString.

TextView with multi-color

package com.example.androidcolortext;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.text.Html;
import android.text.SpannableString;
import android.text.style.BackgroundColorSpan;
import android.text.style.ForegroundColorSpan;
import android.widget.TextView;
import android.widget.TextView.BufferType;

public class MainActivity extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  TextView colorText1 = (TextView)findViewById(R.id.colortext1);
  String text1 = "<font COLOR=\'RED\'><b>" + "android-coding" + "</b></font>"
    + "<font COLOR=\'#00FF00\'><i>" + ".blogspot" + "</i></font>"
    + ".com";
  colorText1.setText(Html.fromHtml(text1));
  
  TextView colorText2 = (TextView)findViewById(R.id.colortext2);
  SpannableString text2 = new SpannableString("android-coding.blogspot.com");
  text2.setSpan(new ForegroundColorSpan(Color.RED), 0, 14, 0);
  text2.setSpan(new ForegroundColorSpan(Color.GREEN), 6, 11, 0);
  text2.setSpan(new ForegroundColorSpan(Color.BLUE), 15, text2.length(), 0);
  colorText2.setText(text2, BufferType.SPANNABLE);
  
  TextView colorText3 = (TextView)findViewById(R.id.colortext3);
  SpannableString text3 = new SpannableString("android-coding.blogspot.com");
  text3.setSpan(new BackgroundColorSpan(Color.LTGRAY), 0, text3.length(), 0);
  text3.setSpan(new ForegroundColorSpan(Color.RED), 0, 14, 0);
  text3.setSpan(new ForegroundColorSpan(Color.GREEN), 6, 11, 0);
  text3.setSpan(new ForegroundColorSpan(0xFF0000FF), 14, 23, 0);
  text3.setSpan(new ForegroundColorSpan(0x500000FF), 23, text3.length(), 0);
  colorText3.setText(text3, BufferType.SPANNABLE);

 }

}


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.androidcolortext.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="android-coding.blogspot.com" />
    
    <TextView
        android:id="@+id/colortext1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="50sp" />
    <TextView
        android:id="@+id/colortext2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="50sp" />
    <TextView
        android:id="@+id/colortext3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="50sp" />

</LinearLayout>

by： And.coding 0 comments

May 13, 2014

ComposePathEffect vs SumPathEffect

This example show different effect of ComposePathEffect vs SumPathEffect, on CornerPathEffect and DashPathEffect.


/res/layout/activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.androidview.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="android-coding.blogspot.com" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="CornerPathEffect radius" />

    <SeekBar
        android:id="@+id/radius"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="500"
        android:progress="30" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="DashPathEffect phase" />

    <SeekBar
        android:id="@+id/phase"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="30" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <ToggleButton
            android:id="@+id/combineffect"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textOff="SumPathEffect"
            android:textOn="ComposePathEffect" />

        <RadioGroup
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >
            <RadioButton
                android:id="@+id/styleFill"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="FILL"
                android:checked="true" />
            <RadioButton
                android:id="@+id/styleStroke"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="STROKE" />
            <RadioButton
                android:id="@+id/styleFillAndStroke"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="FILL_AND_STROKE" />
        </RadioGroup>
    </LinearLayout>

    <com.example.androidview.MyView
        android:id="@+id/myview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

MyView.java
package com.example.androidview;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ComposePathEffect;
import android.graphics.CornerPathEffect;
import android.graphics.DashPathEffect;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.SumPathEffect;
import android.graphics.Path.Direction;
import android.graphics.PathEffect;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paintBorder, paintCircle;
 Path pathBorder, pathCircle;
 
 Path pathShape;
 float cornerRadius;
 float dashPhase;
 float[] intervals = {50.0f, 50.0f};
 
 //true: ComposePathEffect
 //false: SumPathEffect
 boolean combinPathEffect; 
 
 Paint.Style style = Paint.Style.FILL;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paintBorder = new Paint();
  paintBorder.setColor(Color.BLUE);
  paintBorder.setStrokeWidth(5);
  
  paintCircle = new Paint();
  paintCircle.setColor(Color.RED);
  paintCircle.setStrokeWidth(5);

  pathBorder = new Path();
  pathCircle = new Path();
  
  pathShape = new Path();
  pathShape.moveTo(0, 0);
  pathShape.lineTo(10, 20);
  pathShape.lineTo(20, 0);
  pathShape.close();
  
  cornerRadius = 30.0f;
  dashPhase = 30.0f;
 }

 @SuppressLint("DrawAllocation")
 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawColor(Color.GRAY);

  pathBorder.reset();
  pathBorder.moveTo(50,  50);
  pathBorder.lineTo(50, getHeight()-50);
  pathBorder.lineTo(getWidth()-50, getHeight()-50);
  pathBorder.lineTo(getWidth()-50, 50);
  pathBorder.close();
  
  float radius;
  pathCircle.reset();
  if(getWidth()>getHeight()){
   radius = getHeight()/4;
  }else{
   radius = getWidth()/4;
  }
  pathCircle.addCircle(getWidth()/2, getHeight()/2, radius, Direction.CCW);

  CornerPathEffect cornerPathEffect = new CornerPathEffect(cornerRadius);
  DashPathEffect dashPathEffect = new DashPathEffect(intervals, dashPhase);
  
  PathEffect pathEffect;
  
  if(combinPathEffect){
   pathEffect = new ComposePathEffect(dashPathEffect, cornerPathEffect);
  }else{
   pathEffect = new SumPathEffect(dashPathEffect, cornerPathEffect);
  }
  
  paintBorder.setStyle(style);
  paintCircle.setStyle(style);
  
  paintBorder.setPathEffect(pathEffect);
  paintCircle.setPathEffect(pathEffect);
  
  canvas.drawPath(pathBorder, paintBorder);
  canvas.drawPath(pathCircle, paintCircle);
 }
 
 public void setCornerRadius(float r){
  cornerRadius = r;
  invalidate();
 }
 public void setDashPhase(float p){
  dashPhase = p;
  invalidate();
 }
 
 public void setCombinPathEffect(boolean e){
  combinPathEffect = e;
  invalidate();
 }
 
 public void setStyle(Paint.Style s){
  style = s;
  invalidate();
 }

}

MainActivity.java
package com.example.androidview;

import android.app.Activity;
import android.graphics.Paint;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RadioButton;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.ToggleButton;

public class MainActivity extends Activity {
 
 private MyView myView;
 private SeekBar seekBarRadius, seekBarPhase;
 ToggleButton buttonEffect;
 RadioButton radioFill, radioStroke, radioFillAndStroke;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  myView = (MyView)findViewById(R.id.myview);
  
  seekBarRadius = (SeekBar)findViewById(R.id.radius);
  seekBarRadius.setOnSeekBarChangeListener(seekBarRadiusChangeListener);
  seekBarPhase = (SeekBar)findViewById(R.id.phase);
  seekBarPhase.setOnSeekBarChangeListener(seekBarPhaseChangeListener);
  
  buttonEffect = (ToggleButton)findViewById(R.id.combineffect);
  buttonEffect.setOnCheckedChangeListener(buttonEffectCheckedChangeListener);
  
  radioFill = (RadioButton)findViewById(R.id.styleFill);
  radioStroke = (RadioButton)findViewById(R.id.styleStroke);
  radioFillAndStroke = (RadioButton)findViewById(R.id.styleFillAndStroke);
  radioFill.setOnCheckedChangeListener(radioOnCheckedChangeListener);
  radioStroke.setOnCheckedChangeListener(radioOnCheckedChangeListener);
  radioFillAndStroke.setOnCheckedChangeListener(radioOnCheckedChangeListener);
 }
 
 OnSeekBarChangeListener seekBarRadiusChangeListener =
  new OnSeekBarChangeListener(){

   @Override
   public void onProgressChanged(SeekBar seekBar, int progress,
     boolean fromUser) {
    myView.setCornerRadius(progress);
   }

   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {}

   @Override
   public void onStopTrackingTouch(SeekBar seekBar) {}
  
 };
 
 OnSeekBarChangeListener seekBarPhaseChangeListener =
  new OnSeekBarChangeListener(){

   @Override
   public void onProgressChanged(SeekBar seekBar, int progress,
     boolean fromUser) {
    myView.setDashPhase(progress);
   }

   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {}
    @Override
   public void onStopTrackingTouch(SeekBar seekBar) {}
   
 };
 
 OnCheckedChangeListener buttonEffectCheckedChangeListener =
  new OnCheckedChangeListener(){

   @Override
   public void onCheckedChanged(CompoundButton buttonView,
     boolean isChecked) {
    myView.setCombinPathEffect(isChecked);
   }};
   
 OnCheckedChangeListener radioOnCheckedChangeListener =
  new OnCheckedChangeListener(){

   @Override
   public void onCheckedChanged(CompoundButton buttonView,
     boolean isChecked) {
    if(radioFill.isChecked()){
     myView.setStyle(Paint.Style.FILL);
    }else if(radioStroke.isChecked()){
     myView.setStyle(Paint.Style.STROKE);
    }else{
     myView.setStyle(Paint.Style.FILL_AND_STROKE);
    }
   }
  
 };
 
}


- More examples of drawing path on custom View.

by： And.coding 0 comments

May 11, 2014

Fill path and stroke with different color

Check the demo video. The outter (deviated) rectangle drawn with Paint with style of Paint.Style.FILL_AND_STROKE, both the filled area and stroke have the same color. The inner (deviated) circle drawn in two times; first time drawn with Paint.Style.FILL to fill the inner area, the second time draw with Paint.Style.STROKE to draw the stroke with different color.


package com.example.androidview;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.DiscretePathEffect;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Path.Direction;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paintBorder, paintCircle;
 Path pathBorder, pathCircle;
 
 Path pathShape;
 float segmentLength;
 float deviation;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paintBorder = new Paint();
  paintBorder.setColor(Color.BLUE);
  paintBorder.setStrokeWidth(20);
  paintBorder.setStyle(Paint.Style.FILL_AND_STROKE);
  
  paintCircle = new Paint();
  paintCircle.setStrokeWidth(20);

  pathBorder = new Path();
  pathCircle = new Path();
  
  pathShape = new Path();
  pathShape.moveTo(0, 0);
  pathShape.lineTo(10, 20);
  pathShape.lineTo(20, 0);
  pathShape.close();
  
  segmentLength = 30.0f;
  deviation = 30.0f;
 }

 @SuppressLint("DrawAllocation")
 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawColor(Color.GRAY);

  pathBorder.reset();
  pathBorder.moveTo(50,  50);
  pathBorder.lineTo(50, getHeight()-50);
  pathBorder.lineTo(getWidth()-50, getHeight()-50);
  pathBorder.lineTo(getWidth()-50, 50);
  pathBorder.close();
  
  float radius;
  pathCircle.reset();
  if(getWidth()>getHeight()){
   radius = getHeight()/4;
  }else{
   radius = getWidth()/4;
  }
  pathCircle.addCircle(getWidth()/2, getHeight()/2, radius, Direction.CCW);

  DiscretePathEffect discretePathEffect =
    new DiscretePathEffect(segmentLength, deviation);
  paintBorder.setPathEffect(discretePathEffect);
  
  canvas.drawPath(pathBorder, paintBorder);
  
  //fill circle with color
  paintCircle.setColor(Color.RED);
  paintCircle.setStyle(Paint.Style.FILL);
  paintCircle.setPathEffect(discretePathEffect);
  canvas.drawPath(pathCircle, paintCircle);
  //draw stroke with different color
  paintCircle.setColor(Color.BLACK);
  paintCircle.setStyle(Paint.Style.STROKE);
  paintCircle.setPathEffect(discretePathEffect);
  canvas.drawPath(pathCircle, paintCircle);
  
 }
 
 public void setDeviation(int dev){
  deviation = (float)dev;
  invalidate();
 }
 
 public void setSegmentLength(int seglen){
  
  //force segmentLength not 0
  if (seglen==0){
   seglen = 1;
  }
   
  segmentLength = (float)seglen;
  invalidate();
 }
 
 public void setStrokeWidth(int strwidth){
  paintBorder.setStrokeWidth(strwidth);
  paintCircle.setStrokeWidth(strwidth);
  invalidate();
 }

}


Other files, /res/layout/activity_main.xml and MainActivity.java, refer to last post DiscretePathEffect example.

- More examples of drawing path on custom View.


by： And.coding 0 comments

May 10, 2014

DiscretePathEffect example

android.graphics.DiscretePathEffect chop the path into lines of segmentLength, randomly deviating from the original path by deviation.


Main layout, /res/layout/activity_main.xml.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.androidview.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="android-coding.blogspot.com" />
    
    <TextView 
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="segmentLength"/>
    <SeekBar 
        android:id="@+id/segmentLength"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="30"/>
    
    <TextView 
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="deviation"/>
    <SeekBar 
        android:id="@+id/deviation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="30"/>
    
    <TextView 
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="strokeWidth"/>
    <SeekBar 
        android:id="@+id/strokeWidth"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="20"/>
    
    <com.example.androidview.MyView
        android:id="@+id/myview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

MainActivity.java
package com.example.androidview;

import android.app.Activity;
import android.graphics.PathDashPathEffect;
import android.graphics.PathDashPathEffect.Style;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.Spinner;

public class MainActivity extends Activity {
 
 private MyView myView;
 private SeekBar seekBarSegmentLength, seekBarDeviation;
 private SeekBar seekBarStrokeWidth;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  myView = (MyView)findViewById(R.id.myview);
  
  seekBarSegmentLength = (SeekBar)findViewById(R.id.segmentLength);
  seekBarSegmentLength.setOnSeekBarChangeListener(seekBarSegmentLengthChangeListener);
  seekBarDeviation = (SeekBar)findViewById(R.id.deviation);
  seekBarDeviation.setOnSeekBarChangeListener(seekBarDeviationChangeListener);
  
  seekBarStrokeWidth = (SeekBar)findViewById(R.id.strokeWidth);
  seekBarStrokeWidth.setOnSeekBarChangeListener(seekBarStrokeWidthChangeListener);
 }
 
 OnSeekBarChangeListener seekBarSegmentLengthChangeListener =
  new OnSeekBarChangeListener(){

   @Override
   public void onProgressChanged(SeekBar seekBar, int progress,
     boolean fromUser) {
    myView.setSegmentLength(progress);
   }

   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {}

   @Override
   public void onStopTrackingTouch(SeekBar seekBar) {}
  
 };
 
 
 
 OnSeekBarChangeListener seekBarDeviationChangeListener =
  new OnSeekBarChangeListener(){

   @Override
   public void onProgressChanged(SeekBar seekBar, int progress,
     boolean fromUser) {
    myView.setDeviation(progress);
   }

   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {}
    @Override
   public void onStopTrackingTouch(SeekBar seekBar) {}
   
 };
 
 OnSeekBarChangeListener seekBarStrokeWidthChangeListener =
  new OnSeekBarChangeListener(){

   @Override
   public void onProgressChanged(SeekBar seekBar, int progress,
     boolean fromUser) {
    myView.setStrokeWidth(progress);
   }

   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {}
    @Override
   public void onStopTrackingTouch(SeekBar seekBar) {}
   
 };
 
}

MyView.java
package com.example.androidview;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.DiscretePathEffect;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Path.Direction;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paintBorder, paintCircle;
 Path pathBorder, pathCircle;
 
 Path pathShape;
 float segmentLength;
 float deviation;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paintBorder = new Paint();
  paintBorder.setColor(Color.BLUE);
  paintBorder.setStrokeWidth(20);
  paintBorder.setStyle(Paint.Style.STROKE);
  
  paintCircle = new Paint();
  paintCircle.setColor(Color.RED);
  paintCircle.setStrokeWidth(20);
  paintCircle.setStyle(Paint.Style.STROKE);

  pathBorder = new Path();
  pathCircle = new Path();
  
  pathShape = new Path();
  pathShape.moveTo(0, 0);
  pathShape.lineTo(10, 20);
  pathShape.lineTo(20, 0);
  pathShape.close();
  
  segmentLength = 30.0f;
  deviation = 30.0f;
 }

 @SuppressLint("DrawAllocation")
 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawColor(Color.GRAY);

  pathBorder.reset();
  pathBorder.moveTo(50,  50);
  pathBorder.lineTo(50, getHeight()-50);
  pathBorder.lineTo(getWidth()-50, getHeight()-50);
  pathBorder.lineTo(getWidth()-50, 50);
  pathBorder.close();
  
  float radius;
  pathCircle.reset();
  if(getWidth()>getHeight()){
   radius = getHeight()/4;
  }else{
   radius = getWidth()/4;
  }
  pathCircle.addCircle(getWidth()/2, getHeight()/2, radius, Direction.CCW);

  DiscretePathEffect discretePathEffect =
    new DiscretePathEffect(segmentLength, deviation);
  paintBorder.setPathEffect(discretePathEffect);
  paintCircle.setPathEffect(discretePathEffect);
  
  canvas.drawPath(pathBorder, paintBorder);
  canvas.drawPath(pathCircle, paintCircle);

 }
 
 public void setDeviation(int dev){
  deviation = (float)dev;
  invalidate();
 }
 
 public void setSegmentLength(int seglen){
  
  //force segmentLength not 0
  if (seglen==0){
   seglen = 1;
  }
   
  segmentLength = (float)seglen;
  invalidate();
 }
 
 public void setStrokeWidth(int strwidth){
  paintBorder.setStrokeWidth(strwidth);
  paintCircle.setStrokeWidth(strwidth);
  invalidate();
 }

}

- More examples of drawing path on custom View.

by： And.coding 0 comments

May 9, 2014

Effect of advance, phase, style in PathDashPathEffect

The example make PathDashPathEffect with interactive setting of advance, phase and style; such that you can know how they affect the result.


Main layout, /res/layout/activity_main.xml.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.androidview.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="android-coding.blogspot.com" />
    
    <TextView 
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="advance"/>
    <SeekBar 
        android:id="@+id/advance"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="30"/>
    
    <TextView 
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="phase"/>
    <SeekBar 
        android:id="@+id/phase"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="30"/>
    <Spinner
        android:id="@+id/style"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    
    <com.example.androidview.MyView
        android:id="@+id/myview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

MainActivity.java
package com.example.androidview;

import android.app.Activity;
import android.graphics.PathDashPathEffect;
import android.graphics.PathDashPathEffect.Style;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.Spinner;

public class MainActivity extends Activity {
 
 private MyView myView;
 private SeekBar seekBarAdvance, seekBarPhase;
 private Spinner spinnerStyle;
 
 private String[] styleNames ={
  "PathDashPathEffect.Style.MORPH",
  "PathDashPathEffect.Style.ROTATE",
  "PathDashPathEffect.Style.TRANSLATE"};
 private Style[] styleSettings = {
  PathDashPathEffect.Style.MORPH,
  PathDashPathEffect.Style.ROTATE,
  PathDashPathEffect.Style.TRANSLATE};
 
 private ArrayAdapter<String> spinnerStyleAdapter;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  myView = (MyView)findViewById(R.id.myview);
  
  seekBarAdvance = (SeekBar)findViewById(R.id.advance);
  seekBarAdvance.setOnSeekBarChangeListener(seekBarAdvanceChangeListener);
  seekBarPhase = (SeekBar)findViewById(R.id.phase);
  seekBarPhase.setOnSeekBarChangeListener(seekBarPhaseChangeListener);
  
  spinnerStyle = (Spinner)findViewById(R.id.style);
  spinnerStyleAdapter = new ArrayAdapter<String>(this, 
   android.R.layout.simple_spinner_item, styleNames);
  spinnerStyleAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
  spinnerStyle.setAdapter(spinnerStyleAdapter);
  spinnerStyle.setOnItemSelectedListener(spinnerStyleOnItemSelectedListener);

 }
 
 OnSeekBarChangeListener seekBarAdvanceChangeListener =
  new OnSeekBarChangeListener(){

   @Override
   public void onProgressChanged(SeekBar seekBar, int progress,
     boolean fromUser) {
    myView.setAdvance(progress);
   }

   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {}

   @Override
   public void onStopTrackingTouch(SeekBar seekBar) {}
  
 };
 
 OnSeekBarChangeListener seekBarPhaseChangeListener =
  new OnSeekBarChangeListener(){

   @Override
   public void onProgressChanged(SeekBar seekBar, int progress,
     boolean fromUser) {
    myView.setPhase(progress);
   }

   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {}
    @Override
   public void onStopTrackingTouch(SeekBar seekBar) {}
  
 };
 
 OnItemSelectedListener spinnerStyleOnItemSelectedListener =
  new OnItemSelectedListener(){

   @Override
   public void onItemSelected(AdapterView<?> parent, View view,
     int position, long id) {
    myView.setStype(styleSettings[position]);
   }

   @Override
   public void onNothingSelected(AdapterView<?> parent) {
    // TODO Auto-generated method stub
    
   }
 };
 
}

MyView.java
package com.example.androidview;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PathDashPathEffect;
import android.graphics.Path.Direction;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paint;
 Path pathBorder, pathCircle;
 
 Path pathShape;
 float phase;
 float advance;
 PathDashPathEffect.Style style;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paint = new Paint();
  paint.setColor(Color.BLUE);
  paint.setStrokeWidth(20);
  paint.setStyle(Paint.Style.STROKE);

  pathBorder = new Path();
  pathCircle = new Path();
  
  pathShape = new Path();
  pathShape.moveTo(0, 0);
  pathShape.lineTo(10, 20);
  pathShape.lineTo(20, 0);
  pathShape.close();
  
  phase = 30.0f;
  advance = 30.0f;
  style = PathDashPathEffect.Style.MORPH;
 }

 @SuppressLint("DrawAllocation")
 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawColor(Color.GRAY);

  pathBorder.reset();
  pathBorder.moveTo(50,  50);
  pathBorder.lineTo(50, getHeight()-50);
  pathBorder.lineTo(getWidth()-50, getHeight()-50);
  pathBorder.lineTo(getWidth()-50, 50);
  pathBorder.close();
  
  float radius;
  pathCircle.reset();
  if(getWidth()>getHeight()){
   radius = getHeight()/4;
  }else{
   radius = getWidth()/4;
  }
  pathCircle.addCircle(getWidth()/2, getHeight()/2, radius, Direction.CCW);

  PathDashPathEffect pathDashPathEffect =
    new PathDashPathEffect(pathShape, advance, phase, style);
  paint.setPathEffect(pathDashPathEffect);
  
  canvas.drawPath(pathCircle, paint);
  canvas.drawPath(pathBorder, paint);

 }
 
 public void setAdvance(int adv){
  advance = (float)adv;
  invalidate();
 }
 
 public void setPhase(int ph){
  phase = (float)ph;
  invalidate();
 }
 
 public void setStype(PathDashPathEffect.Style sty){
  style = sty;
  invalidate();
 }

}


- Running PathDashPathEffect example

- More examples of drawing path on custom View.

by： And.coding 0 comments

May 8, 2014

Running PathDashPathEffect example

This example implement running PathDashPathEffect, by varying phase parameter.


Modify MyView.java from the post.

package com.example.androidview;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Path.Direction;
import android.graphics.PathDashPathEffect;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paint;
 Path path;
 
 Path pathShape;
 float phase;
 float advance;
 PathDashPathEffect.Style style;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paint = new Paint();
  paint.setColor(Color.RED);
  paint.setStrokeWidth(20);
  paint.setStyle(Paint.Style.STROKE);

  path = new Path();
  
  pathShape = new Path();
  pathShape.addCircle(10, 10, 10, Direction.CCW);
  
  phase = 0;
  advance = 30.0f;
  style = PathDashPathEffect.Style.ROTATE;

 }

 @SuppressLint("DrawAllocation")
 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawColor(Color.GRAY);

  path.reset();
  path.moveTo(50,  50);
  path.lineTo(50, getHeight()-50);
  path.lineTo(getWidth()-50, getHeight()-50);
  path.lineTo(getWidth()-50, 50);
  path.close();
  
  phase++;
  PathDashPathEffect pathDashPathEffect =
    new PathDashPathEffect(pathShape, advance, phase, style);
  paint.setPathEffect(pathDashPathEffect);
  
  canvas.drawPath(path, paint);
  
  invalidate();
 }

}


- Effect of advance, phase, style in PathDashPathEffect

- More examples of drawing path on custom View

by： And.coding 0 comments

May 7, 2014

PathDashPathEffect example

android.graphics.PathDashPathEffect dash the drawn path by stamping it with the specified shape.

Example:
PathDashPathEffect example
PathDashPathEffect example

Modify MyView.java from the post.
package com.example.androidview;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Path.Direction;
import android.graphics.PathDashPathEffect;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paint;
 Path path;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paint = new Paint();
  paint.setColor(Color.RED);
  paint.setStrokeWidth(20);
  paint.setStyle(Paint.Style.STROKE);

  path = new Path();
  
  Path pathShape = new Path();
  pathShape.addCircle(10, 10, 10, Direction.CCW);
  
  float advance = 30.0f;
  float phase = 20.0f;
  PathDashPathEffect.Style style = PathDashPathEffect.Style.ROTATE;
  
  PathDashPathEffect pathDashPathEffect =
   new PathDashPathEffect(pathShape, advance, phase, style);
  
  paint.setPathEffect(pathDashPathEffect);

 }

 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawColor(Color.GRAY);

  path.reset();
  path.moveTo(50,  50);
  path.lineTo(50, getHeight()-50);
  path.lineTo(getWidth()-50, getHeight()-50);
  path.lineTo(getWidth()-50, 50);
  path.close();
  
  canvas.drawPath(path, paint);
 }

}

by： And.coding 0 comments

May 6, 2014

ComposePathEffect example

android.graphics.ComposePathEffect create PathEffect from other two PathEffects, to apply first the inner effect and the outer pathEffect.

Here is a example to create ComposePathEffect from CornerPathEffect and DashPathEffect, in various combination.



Where:

  • paint0: no effect
  • paint1: CornerPathEffect
  • paint2: DashPathEffect
  • paint3: ComposePathEffect(cornerPathEffect, dashPathEffect)
  • paint4: ComposePathEffect(dashPathEffect, cornerPathEffect)
  • paint5: ComposePathEffect(cornerPathEffect, cornerPathEffect)
  • ComposePathEffect(another dashPathEffect, dashPathEffect)

Modify MyView.java from the post.
package com.example.androidview;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ComposePathEffect;
import android.graphics.CornerPathEffect;
import android.graphics.DashPathEffect;
import android.graphics.Paint;
import android.graphics.Path;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paint0, paint1, paint2, paint3, paint4, paint5, paint6;
 Path path;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paint0 = new Paint();
  paint0.setColor(Color.BLACK);
  paint0.setStrokeWidth(10);
  paint0.setStyle(Paint.Style.STROKE);
  
  paint1 = new Paint();
  paint1.set(paint0);
  paint1.setColor(Color.RED);
  
  paint2 = new Paint();
  paint2.set(paint0);
  paint2.setColor(Color.GREEN);
  
  paint3 = new Paint();
  paint3.set(paint0);
  paint3.setColor(Color.BLUE);
  
  paint4 = new Paint();
  paint4.set(paint0);
  paint4.setColor(Color.CYAN);
  
  paint5 = new Paint();
  paint5.set(paint0);
  paint5.setColor(Color.MAGENTA);
  
  paint6 = new Paint();
  paint6.set(paint0);
  paint6.setColor(Color.GRAY);

  path = new Path();
  path.moveTo(20, 20);
  path.lineTo(20, 60);
  path.lineTo(100, 80);
  path.lineTo(10, 150);
  path.lineTo(20, 200);
  path.lineTo(20, 500);
  path.lineTo(100, 500);
  path.lineTo(100, 300);
  path.lineTo(150, 300);

  float radius = 50.0f;
  CornerPathEffect cornerPathEffect = 
   new CornerPathEffect(radius);
  
  float[] intervals = new float[]{80.0f, 30.0f};
  float phase = 0;
  DashPathEffect dashPathEffect = 
   new DashPathEffect(intervals, phase);

  ComposePathEffect composePathEffect3 = 
   new ComposePathEffect(cornerPathEffect, dashPathEffect);
  ComposePathEffect composePathEffect4 = 
    new ComposePathEffect(dashPathEffect, cornerPathEffect);
  ComposePathEffect composePathEffect5 = 
    new ComposePathEffect(cornerPathEffect, cornerPathEffect);
  
  float[] intervals6 = new float[]{5.0f, 5.0f};
  float phase6 = 0;
  DashPathEffect dashPathEffect6 = 
    new DashPathEffect(intervals6, phase6);
  ComposePathEffect composePathEffect6 = 
    new ComposePathEffect(dashPathEffect6, dashPathEffect);

  paint1.setPathEffect(cornerPathEffect);
  paint2.setPathEffect(dashPathEffect);
  paint3.setPathEffect(composePathEffect3);
  paint4.setPathEffect(composePathEffect4);
  paint5.setPathEffect(composePathEffect5);
  paint6.setPathEffect(composePathEffect6);

 }

 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawPath(path, paint0); //no effect
  canvas.translate(150, 0);
  canvas.drawPath(path, paint1);
  canvas.translate(150, 0);
  canvas.drawPath(path, paint2);
  canvas.translate(150, 0);
  canvas.drawPath(path, paint3);
  canvas.translate(150, 0);
  canvas.drawPath(path, paint4);
  canvas.translate(150, 0);
  canvas.drawPath(path, paint5);
  canvas.translate(150, 0);
  canvas.drawPath(path, paint6);
 }

}
by： And.coding 0 comments

May 5, 2014

Draw rounded corner line along path, with CornerPathEffect.

Example to draw rounded corner line along path, by applying CornerPathEffect on path.


Modify MyView.java from the post.
package com.example.androidview;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.CornerPathEffect;
import android.graphics.Paint;
import android.graphics.Path;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paint;
 Path path;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paint = new Paint();
  paint.setColor(Color.BLUE);
  paint.setStrokeWidth(10);
  paint.setStyle(Paint.Style.STROKE);

  path = new Path();
  path.moveTo(50, 50);
  path.lineTo(50, 500);
  path.lineTo(200, 500);
  path.lineTo(200, 300);
  path.lineTo(350, 300);

  float radius = 50.0f;
  
  CornerPathEffect cornerPathEffect =
    new CornerPathEffect(radius);

  paint.setPathEffect(cornerPathEffect);

 }

 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawPath(path, paint);

 }

}

by： And.coding 1 comments

May 4, 2014

Draw dash line along path, with DashPathEffect.

This example draw dash line along path, with DashPathEffect.



Modify MyView.java from last post.
package com.example.androidview;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.DashPathEffect;
import android.graphics.Paint;
import android.graphics.Path;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paint;
 Path path;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paint = new Paint();
  paint.setColor(Color.BLUE);
  paint.setStrokeWidth(10);
  paint.setStyle(Paint.Style.STROKE);

  path = new Path();
  path.moveTo(50, 50);
  path.lineTo(50, 500);
  path.lineTo(200, 500);
  path.lineTo(200, 300);
  path.lineTo(350, 300);
  
  float[] intervals = new float[]{50.0f, 20.0f};
  float phase = 0;
  
  DashPathEffect dashPathEffect = 
    new DashPathEffect(intervals, phase);

  paint.setPathEffect(dashPathEffect);

 }

 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawPath(path, paint);

 }

}

by： And.coding 0 comments

Draw path on custom View

This example simple draw line on custom View, along path.


MyView.java, our custom View.
package com.example.androidview;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.util.AttributeSet;
import android.view.View;

public class MyView extends View {

 Paint paint;
 Path path;

 public MyView(Context context) {
  super(context);
  init();
 }

 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  init();
 }

 public MyView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  init();
 }

 private void init() {
  paint = new Paint();
  paint.setColor(Color.BLUE);
  paint.setStrokeWidth(10);
  paint.setStyle(Paint.Style.STROKE);

  path = new Path();
  path.moveTo(50, 50);
  path.lineTo(50, 500);
  path.lineTo(200, 500);
  path.lineTo(200, 300);
  path.lineTo(350, 300);

 }

 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);
  canvas.drawPath(path, paint);

 }

}


activity_main.xml, layout file with MyView.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.androidview.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="android-coding.blogspot.com" />
    <com.example.androidview.MyView
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>


MainActivity.java
package com.example.androidview;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

 }

}


More example of drawing on path:



by： And.coding 0 comments

May 3, 2014

The Faster Android Emulator, Genymotion

Genymotion is an emulator using x86 architecture virtualization, making it much more efficient!

Genymotion, Android emulator

Genymotion is the next generation of the AndroVM open source project, already trusted by 300,000 developers.

 It's even easier to use and has lots more functionalities.


http://www.genymotion.com/

by： And.coding 0 comments
Subscribe to: Posts (Atom)

Infolinks In Text Ads