用android.settings.SETTINGS截取BroadcastReceiver

Question

早上好，我正试着拦截设置活动的开始。基本上，当用户试图访问全局设置活动时，我希望触发一些事件。

我使用的是一个BroadcastReceiver，代码如下：

public class MainActivity extends Activity {

IntentFilter intentFilter;
BroadcastReceiver receiver;
Button settings;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    intentFilter = new IntentFilter(Settings.ACTION_SETTINGS);

    ((Button)findViewById(R.id.settings)).setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent intent = new Intent(Settings.ACTION_SETTINGS);
            startActivity(intent);
            Log.v("MYAPP", "starting intent");
        }
    });

}

@Override
protected void onPause() {
    super.onPause();

    unregisterReceiver(receiver);
    Log.v("MYAPP", "on pause, unregister receiver");
}

@Override
protected void onResume() {
    super.onResume();

    receiver = new MyBroadcastReceiver();
    registerReceiver(receiver, intentFilter);
    Log.v("MYAPP", "on resume, register receiver");
}

private class MyBroadcastReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.v("MYAPP", "received settings intent");
    }
}

}

但接收者没有截获意图..。

我遗漏了什么？

谢谢您抽时间见我

Answer 1

我遗漏了什么？

您不能使用startActivity()“拦截”BroadcastReceiver调用。BroadcastReceiver接收广播，而不是startActivity()呼叫。

Answer 2

在反馈之后，我找到了另一种拦截设置打开的方法：

 @Override
public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);

    Log.v(TAG, "Focus changed !");

    if (!hasFocus) {
        Log.v(TAG, "Lost focus !");
        ActivityManager am = (ActivityManager) getApplicationContext()
                .getSystemService(Context.ACTIVITY_SERVICE);
        ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
        if (cn != null
                && cn.getClassName().equals(
                        "com.android.settings.Settings")) {
            Log.v(TAG, "settings intercepted");

            // do your stuff

        }
    }
}