Home Screen Widget step-by-step - Implement OnClick PendingIntent for Widget

It's part of the Home Screen Widgets step-by-step series.

We can cureat PendingIntent, and register it to widget's RemoteViews by setOnClickPendingIntent() method. As a result, when user click on the assigned view in the widgets, the PendingIntent will be trigged and to do something.

In the example, my blog (http://android-coding.blogspot.com/) will be opened once user click on the ID in widgets.

Modify configure activity (ConfigureWidgetActivity.java) and App Widget Provider (WidgetProvider.java) to Prepare PendingIntent for remoteViews OnClickListener.

ConfigureWidgetActivity.java

package com.example.androidhomewidget;

import android.app.Activity;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RemoteViews;
import android.widget.TextView;

public class ConfigureWidgetActivity extends Activity {
 
 int appWidgetId;
 Button configureOkButton;
 TextView wId;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.configure_layout);
  wId = (TextView)findViewById(R.id.wid);
  configureOkButton = (Button)findViewById(R.id.confighreok);
  configureOkButton.setOnClickListener(configureOkButtonOnClickListener);
  
  Intent intent = getIntent();
  Bundle extras = intent.getExtras();
  
  if (extras != null) {
   appWidgetId = extras.getInt(
     AppWidgetManager.EXTRA_APPWIDGET_ID,
     AppWidgetManager.INVALID_APPWIDGET_ID);
   
   wId.setText("appWidgetId = " + appWidgetId);
   
  }else{
   finish();
  }
      
 }
 
 OnClickListener configureOkButtonOnClickListener
 = new OnClickListener(){

  @Override
  public void onClick(View v) {

    AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(getApplicationContext());

    RemoteViews remoteViews = new RemoteViews(
      getApplicationContext().getPackageName(), 
      R.layout.widget_layout);
    
    remoteViews.setTextViewText(R.id.widget_id, String.valueOf(appWidgetId));
    remoteViews.setTextViewText(R.id.widget_status, "Waiting...");
    
    //--- Prepare PendingIntent for remoteViews OnClickListener
    String myBlog = "http://android-coding.blogspot.com/";
    Uri Uri_myBlog = Uri.parse(myBlog);
    Intent clickIntent = new Intent(Intent.ACTION_VIEW, Uri_myBlog);
    
    int pendingRequestCode = 0;
    int pendingFlag = 0;
    PendingIntent pendingIntent
     = PendingIntent.getActivity(
       getApplicationContext(), 
       pendingRequestCode, 
       clickIntent, 
       pendingFlag);
    remoteViews.setOnClickPendingIntent(R.id.widget_id, pendingIntent);
    //--- End of Prepare PendingIntent
    
    appWidgetManager.updateAppWidget(appWidgetId, remoteViews);

    Intent intent = new Intent();
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
    setResult(RESULT_OK, intent);
    finish();
   
  }};

}

WidgetProvider.java

package com.example.androidhomewidget;

import java.text.SimpleDateFormat;
import java.util.Date;

import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.widget.RemoteViews;
import android.widget.Toast;

public class WidgetProvider extends AppWidgetProvider {

 @Override
 public void onDeleted(Context context, int[] appWidgetIds) {
  // TODO Auto-generated method stub
  super.onDeleted(context, appWidgetIds);
 }

 @Override
 public void onDisabled(Context context) {
  // TODO Auto-generated method stub
  super.onDisabled(context);
 }

 @Override
 public void onEnabled(Context context) {
  // TODO Auto-generated method stub
  super.onEnabled(context);
 }

 @Override
 public void onReceive(Context context, Intent intent) {
  // TODO Auto-generated method stub
  super.onReceive(context, intent);
 }

 @Override
 public void onUpdate(Context context, AppWidgetManager appWidgetManager,
   int[] appWidgetIds) {
  
  for(int i = 0; i < appWidgetIds.length; i++){
   
   int id = appWidgetIds[i];
   
   Toast.makeText(context, 
     "onUpdate: " + String.valueOf(id), 
     Toast.LENGTH_LONG).show();
   
   RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
   
   remoteViews.setTextViewText(R.id.widget_id, String.valueOf(id));
   
   SimpleDateFormat simpleDateFormat = new SimpleDateFormat("hh:mm:ss");
   String now = simpleDateFormat.format(new Date());
   remoteViews.setTextViewText(R.id.widget_status, now);
   
   //--- Prepare PendingIntent for remoteViews OnClickListener
    String myBlog = "http://android-coding.blogspot.com/";
    Uri Uri_myBlog = Uri.parse(myBlog);
    Intent clickIntent = new Intent(Intent.ACTION_VIEW, Uri_myBlog);
    
    int pendingRequestCode = 0;
    int pendingFlag = 0;
    PendingIntent pendingIntent
     = PendingIntent.getActivity(
       context, 
       pendingRequestCode, 
       clickIntent, 
       pendingFlag);
    remoteViews.setOnClickPendingIntent(R.id.widget_id, pendingIntent);
    //--- End of Prepare PendingIntent
   
   appWidgetManager.updateAppWidget(id, remoteViews);
   
   super.onUpdate(context, appWidgetManager, appWidgetIds);
  }
 }

}