android - 为什么我没有收到广播的已安装应用程序？

我正在尝试使用intents和broadcast receiver获取所有已安装的应用程序，但问题是我从不直接使用onReceive方法，因此无法获取任何包名称。我使用以下代码：
killappbcr.java

public class KillAppBCR extends Activity {
private static final String TAG = "BroadcastReceiver";

BroadcastReceiver receiver;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);

    receiver = new TestBroadcastReceiver();

    registerReceiver(receiver, filter);

    Log.e(TAG, "onCreate");
    Toast.makeText(KillAppBCR.this,"onCreate",Toast.LENGTH_SHORT).show();

}

testbroadcastReceiver.java测试广播接收器

public class TestBroadcastReceiver extends BroadcastReceiver
 {
 private static final String TAG = "TestBroadcastReceiver";

@Override
public void onReceive(Context context, Intent intent)
{
    String actionStr = intent.getAction();

    Log.e(TAG, "onReceive");
     Toast.makeText(context,"onReceive",Toast.LENGTH_SHORT).show();


    if (Intent.ACTION_PACKAGE_ADDED.equals(actionStr)) {

        Uri data = intent.getData();

    }
}
}

androidmanifest.xml文件

 <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.KillAppBCR"
  android:versionCode="1"
  android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />

<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".KillAppBCR"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
<receiver android:name=".TestBroadcastReceiver">
  <intent-filter>
    <action android:name="com.KillAppBCR" />
  </intent-filter>
</receiver>
</application>
</manifest>

原木分类

07-19 18:39:48.768: ERROR/BroadcastReceiver(512): CC

07-19 18:39:49.008: INFO/ActivityManager(58): Displayed activity    com.KillAppBCR/.KillAppBCR: 685 ms (total 685 ms)

07-19 18:39:54.338: DEBUG/dalvikvm(121): GC_EXPLICIT freed 259 objects / 12032 bytes in 157ms

07-19 18:42:58.943: DEBUG/SntpClient(58): request time failed: java.net.SocketException: Address family not supported by protocol

07-19 18:47:58.989: DEBUG/SntpClient(58): request time failed: java.net.SocketException: Address family not supported by protocol

问题在哪里？请帮助我，我想接收所有已安装应用程序的广播。
谢谢

最佳答案

为什么你的活动代码很可能不起作用：你只是暂时用registerReceiver注册了接收者。所以在你关闭你的活动后，安卓会再次杀死你的接收器。
您需要做的是在androidmanifest.xml中将com.KillAppBCR替换为android.intent.action.PACKAGE_ADDED。这告诉android永久注册你的接收器。