Add View Programmatically, using addView() and addContentView() |
newButton ("Hello") is added to the existing layout using Layout.addView(). anotherLayout and anotherButton ("I'm another button") are added using addContentView().
package com.example.androidview; import android.os.Bundle; import android.app.Activity; import android.widget.Button; import android.widget.LinearLayout; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); LinearLayout mainLayout = (LinearLayout)findViewById(R.id.mainlayout); //newButton added to the existing layout Button newButton = new Button(this); newButton.setText("Hello"); mainLayout.addView(newButton); //anotherLayout and anotherButton added //using addContentView() LinearLayout anotherLayout = new LinearLayout(this); LinearLayout.LayoutParams linearLayoutParams = new LinearLayout.LayoutParams( LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); Button anotherButton = new Button(this); anotherButton.setText("I'm another button"); anotherLayout.addView(anotherButton); addContentView(anotherLayout, linearLayoutParams); } }
<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=".MainActivity" android:background="#000080" android:id="@+id/mainlayout"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#ffffff" android:textStyle="bold|italic" android:textSize="50sp" android:text="android-coding.blogspot.com" /> </LinearLayout>
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