Question

我的Android应用中有一个叠加按钮。我想在用户点击按钮时显示布局并与我的布局视图进行交互。目前，我展示了一个祝酒词。我怎么能这样做？

这是我的OverlayShowingService.class：

public class OverlayShowingService extends Service implements OnTouchListener, OnClickListener {

    private View topLeftView;

    private Button overlayedButton;
    private float offsetX;
    private float offsetY;
    private int originalXPos;
    private int originalYPos;
    private boolean moving;
    private WindowManager wm;

    @Override
    public IBinder onBind(Intent intent) {
    return null;
    }

    @Override
    public void onCreate() {
    super.onCreate();

    wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE);

    overlayedButton = new Button(this);
    overlayedButton.setText("Overlay button");
    overlayedButton.setOnTouchListener(this);
    overlayedButton.setBackgroundColor(Color.BLACK);
    overlayedButton.setOnClickListener(this);

    WindowManager.LayoutParams params = new WindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.TYPE_SYSTEM_ALERT, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL, PixelFormat.TRANSLUCENT);
    params.gravity = Gravity.LEFT | Gravity.TOP;
    params.x = 0;
    params.y = 0;
    wm.addView(overlayedButton, params);

    topLeftView = new View(this);
    WindowManager.LayoutParams topLeftParams = new WindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.TYPE_SYSTEM_ALERT, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL, PixelFormat.TRANSLUCENT);
    topLeftParams.gravity = Gravity.LEFT | Gravity.TOP;
    topLeftParams.x = 0;
    topLeftParams.y = 0;
    topLeftParams.width = 0;
    topLeftParams.height = 0;
    wm.addView(topLeftView, topLeftParams);

    }

    @Override
    public void onDestroy() {
    super.onDestroy();
    if (overlayedButton != null) {
        wm.removeView(overlayedButton);
        wm.removeView(topLeftView);
        overlayedButton = null;
        topLeftView = null;
    }
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {

    if (event.getAction() == MotionEvent.ACTION_DOWN) {
        float x = event.getRawX();
        float y = event.getRawY();

        moving = false;

        int[] location = new int[2];
        overlayedButton.getLocationOnScreen(location);

        originalXPos = location[0];
        originalYPos = location[1];

        offsetX = originalXPos - x;
        offsetY = originalYPos - y;

    } else if (event.getAction() == MotionEvent.ACTION_MOVE) {
        int[] topLeftLocationOnScreen = new int[2];
        topLeftView.getLocationOnScreen(topLeftLocationOnScreen);

        System.out.println("topLeftY="+topLeftLocationOnScreen[1]);
        System.out.println("originalY="+originalYPos);

        float x = event.getRawX();
        float y = event.getRawY();

        WindowManager.LayoutParams params = (LayoutParams) overlayedButton.getLayoutParams();

        int newX = (int) (offsetX + x);
        int newY = (int) (offsetY + y);

        if (Math.abs(newX - originalXPos) < 1 && Math.abs(newY - originalYPos) < 1 && !moving) {
        return false;
        }

        params.x = newX - (topLeftLocationOnScreen[0]);
        params.y = newY - (topLeftLocationOnScreen[1]);

        wm.updateViewLayout(overlayedButton, params);
        moving = true;
    } else if (event.getAction() == MotionEvent.ACTION_UP) {
        if (moving) {
        return true;
        }
    }

    return false;
    }

    @Override
    public void onClick(View v) {
    Toast.makeText(this, "Here I want to show a layout with some options in a box", Toast.LENGTH_SHORT).show();
    }

}

Answer 1

点击按钮后发送广播，然后从广播接收器onReceive方法开始播放活动。

创建广播接收器，然后注册服务的onCreate（）广播接收器。单击按钮时的广播意图。最后，当单击叠加按钮时，接收器将打开一个活动（布局）。

如果您只想打开一个对话框，这是一个不错的答案。 https://stackoverflow.com/a/31221355/4179914

事实证明，你也可以像这里提到的对话一样主题一个活动 https://stackoverflow.com/a/7918720/4179914

public class OverlayClickReceiver extends BroadcastReceiver {

   @Override
    public void onReceive(Context context, Intent intent) {

        Intent toDialog = new Intent(context, Main2Activity.class);
        toDialog.setFlags(FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(toDialog);
    }
}

点击覆盖按钮发送广播。

    @Override
    public void onClick(View v) {
        broadcastClick();
    }

   private void broadcastClick() {
        final Intent intent = new Intent("user.clicked.overlay.button");
        final LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(this);
        broadcastManager.sendBroadcast(intent);
    }

注册广播接收器onCreate（）

    @Override
    public void onCreate() {
        super.onCreate();

        overlayShowing = new OverlayClickReceiver();
        .......
    }

   private void registerClickReceiver() {
        LocalBroadcastManager.getInstance(this).registerReceiver(overlayShowing,
                new IntentFilter("user.clicked.overlay.button"));
    }

取消注册广播接收器onDestroy（）

@Override
public void onDestroy() {
    super.onDestroy();
    ..........
    unregisterClickReceriver();
}


   private void unregisterClickReceriver() {
        LocalBroadcastManager.getInstance(this).unregisterReceiver(overlayShowing);
    }

Answer 2

根据我对问题的理解，您希望从xml文件中获取视图并将其添加到窗口中。

您可以使用View view = LayoutInflater.from(context).inflate(r.layout.overlay,null,false);并将view与WindowManager.addView(view)添加到窗口中。

用户单击“覆盖”按钮时显示弹出窗口

2 个答案: