Question

下面的代码应该描述一个应用程序，一旦点击了widget按钮，它就会发送一个应该由TestReceiver接收的意图。但是，在运行我的下面的代码时，永远不会调用TestReceiver的onReceive。

有人能让我知道我做错了吗？

小工具代码

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);



    }


}

}

接收人代码：

   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);
      }
     }

    }

清单：

    <?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>

Answer 1

它可能有效，但您忘了在Toast结束时添加.show()：）

Answer 2

==测试引用相等性（它们是否是同一个对象）。

.equals（）测试值的相等性（它们是否在逻辑上＆＃34;相等＆＃34;）。

使用＆＃39; ==＆＃39;比较字符串值。不等于＆＃39;

这＆＃34; Toast.makeText(context, "Test", Toast.LENGTH_SHORT).show();＆＃34;更改此＆＃34; 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(); } } }＆＃34;

当然还有{{1}}

所有代码：

{{1}}

Android Widget点击和广播接收器不工作

2 个答案: