检测具有窗口的服务内的导航按钮的触摸事件

Question

我正在构建一个应用程序,在某些事件上启动服务.该服务在每个应用程序的顶部都有一个叠加视图(如Facebook聊天头).我想停止服务并在点击导航软键按钮(后面,主页和最近的应用程序)时删除叠加视图.

我通过扩展RelativeLayout成功地制作了一个覆盖视图.我正在关注此视图以进行叠加视图.

Facebook正在为扩展和关闭聊天头做同样的事情.提前致谢.:)

编辑

我的问题与此处所述相同.

Answer 1

我遇到了和你一样的问题.因此,经过几天的研究,我发现下面的类检测(按下home和recentapps键的事件).

public class HardwareKeyWatcher {
    static final String TAG = "HardwareKeyWatcher";
    private Context mContext;
    private IntentFilter mFilter;
    private OnHardwareKeysPressedListener mListener;
    private InnerReceiver mReceiver;


    public interface OnHardwareKeysPressedListener {
        public void onHomePressed();

        public void onRecentAppsPressed();
    }

    public HardwareKeyWatcher(Context context) {
        mContext = context;
        mFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        mFilter.setPriority(1000);
    }

    public void setOnHardwareKeysPressedListenerListener(OnHardwareKeysPressedListener listener) {
        mListener = listener;
        mReceiver = new InnerReceiver();
    }

    public void startWatch() {
        if (mReceiver != null) {
            mContext.registerReceiver(mReceiver, mFilter);
        }
    }

    public void stopWatch() {
        if (mReceiver != null) {
            mContext.unregisterReceiver(mReceiver);
        }
    }

    class InnerReceiver extends BroadcastReceiver {
        final String SYSTEM_DIALOG_REASON_KEY = "reason";
        final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
        final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";

        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
                String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
                if (reason != null) {
                    Log.e(TAG, "action:" + action + ",reason:" + reason);
                    if (mListener != null) {
                        if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {
                            mListener.onHomePressed();
                        } else if (reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) {
                            mListener.onRecentAppsPressed();
                        }
                    }
                }
            }
        }
    }
}

在服务中的onCreate方法中使用以下类,如下所示.

@Override
public void onCreate() {
 mHardwareKeyWatcher = new HardwareKeyWatcher(this);
        mHardwareKeyWatcher.setOnHardwareKeysPressedListenerListener(new HardwareKeyWatcher.OnHardwareKeysPressedListener() {
            @Override
            public void onHomePressed() {
                System.out.println("stop your service here");
            }

            @Override
            public void onRecentAppsPressed() {
                System.out.println("stop your service here");
            }
        });
 mHardwareKeyWatcher.startWatch();
}

并且为了检测背压,您可以点击此链接(服务与覆盖 - 按下按钮按下).我测试了这个解决方案,它对我有用.

因此,您可以在onHomePressed()和onRecentAppsPressed()方法中调用stopService,然后覆盖服务类中的onDestroy()方法,如下所示.

@Override
public void onDestroy() {
  super.onDestroy();
  mWindowManager.removeView(mYourOverlayView);
  mHardwareKeyWatcher.stopWatch();
}

请尝试这些事情让我们知道......祝你好运.