android - 如何在应用程序级别调用 Intent.ACTION_CLOSE_SYSTEM_DIALOGS

Question

我试图在用户点击电源按钮时显示我的菜单。我正在使用此代码来禁用系统电源按钮微调菜单，但我不想在每个 Activity 上都编写此代码。如何调用此服务以在应用程序级别禁用系统对话框？

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

    Log.d("Focus debug", "Focus changed !");

    if (!hasFocus) {
        Log.d("Focus debug", "Lost focus !");

        Intent closeDialog = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        sendBroadcast(closeDialog);
    }
}

/* I don't want to write above code on each activity */

import android.widget.Toast;

public class CloseSystemDialogsIntentReceiver extends BroadcastReceiver {

    public void onReceive(final Context context, final Intent intent) {
        // Log.i("HERE", "------------------------------------HERE");
        // Toast.makeText(context, "OFFFFFFFFFFFFFFFF",Toast.LENGTH_LONG).show();
    }
}

<receiver 
    android:name="com.eurosoft.cabtreasure.receiver.CloseSystemDialogsIntentReceiver">
    <intent-filter>
        <action android:name="android.intent.action.CLOSE_SYSTEM_DIALOGS" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</receiver>

Answer 1

您可以创建一个新的 Activity(例如称它为 BaseActivity)，它会覆盖 onWindowFocusChanged 方法。

然后您可以使所有其他需要此 onWindowFocusChanged 的 Activity 扩展 BaseActivity，您无需将此方法复制粘贴到所有 Activity