Android Widget Click and Broadcast Receiver Not Wo

问题:

The below code should describe an app where once the widget button is clicked, it sends off an intent that should be received by TestReceiver. However, in running my below code, the onReceive of TestReceiver is never called.

Could someone let me know what I'm doing wrong?

Widget code

public class Widget extends AppWidgetProvider {

public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    final int N = appWidgetIds.length;

    // Perform this loop procedure for each App Widget that belongs to this provider
    for (int i=0; i<N; i++) {
        int appWidgetId = appWidgetIds[i];

        // Create an Intent to launch ExampleActivity
        //Intent intent = new Intent(context.getApplicationContext(), TestReceiver.class);
        Intent intent = new Intent();
        intent.setAction(TestReceiver.TEST_INTENT);
        intent.setClassName(TestReceiver.class.getPackage().getName(), TestReceiver.class.getName());

        PendingIntent pendingIntent = PendingIntent.getBroadcast(context.getApplicationContext(), 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);

        // Get the layout for the App Widget and attach an on-click listener to the button
        RemoteViews views;

       views = new RemoteViews(context.getPackageName(), R.layout.main);     

        views.setOnClickPendingIntent(R.id.btnTest, pendingIntent);

        // Tell the AppWidgetManager to perform an update on the current App Widget
        appWidgetManager.updateAppWidget(appWidgetId, views);



    }


}

}

Receiver Code:

   public class TestReceiver extends BroadcastReceiver {

     public static final String TEST_INTENT= "MyTestIntent";

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

      Toast.makeText(context, "Test", Toast.LENGTH_SHORT);

      if(intent.getAction()==TEST_INTENT)
      {
         System.out.println("GOT THE INTENT");

       Toast.makeText(context, "Test", Toast.LENGTH_SHORT);
      }
     }

    }

Manifest:

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.test.intenttest"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
  <receiver android:name=".TestReceiver" android:label="@string/app_name">
   <intent-filter>
    <action android:name="MyTestIntent">
    </action>
   </intent-filter>
  </receiver>
  <receiver android:label="@string/app_name" android:name="Widget">
   <intent-filter>
    <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
   </intent-filter>
   <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget"  />
  </receiver>
    </application>
    <uses-sdk android:minSdkVersion="3" />

</manifest> 

回答1:

It probably works, but you forgot to add .show() at the end of your Toast :)

回答2:

== tests for reference equality (whether they are the same object).

.equals() tests for value equality (whether they are logically "equal").

String values are compared using '==' not 'equals'

This "if(intent.getAction()==TEST_INTENT)" change this "if(intent.getAction().equals(TEST_INTENT))"

and of course Toast.makeText(context, "Test", Toast.LENGTH_SHORT).show();

All code:

package *********;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;


public class TestReceiver extends BroadcastReceiver {

    public static final String TEST_INTENT= "MyTestIntent";

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

        Toast.makeText(context, "Test holaaa", Toast.LENGTH_SHORT).show();

       if(intent.getAction() == TEST_INTENT)
          //  if(intent.getAction().equals(TEST_INTENT))
        {
            System.out.println("GOT THE INTENT");

            Toast.makeText(context, "Test Goooo", Toast.LENGTH_SHORT).show();
        }
    }
}