浮动图像不显示在自定义活动中在Android中

当用户在系统中通过 Facebook Messenger 获取 chatHeads 或（浮动图像）时 . 我得到浮动图像的点击事件 . 但我的问题是当我点击 chatHeads 或（浮动图像）并调用一个活动，然后正确调用活动，但在上面的活动上调用 chatHeads 或（浮动图像） . 我希望隐藏 chatHeads 或（浮动图像）隐藏在Android中的自定义Activity上 .

public class MyAccessibilityService extends AccessibilityService
{
    @Override
    public void onAccessibilityEvent(AccessibilityEvent event)
    {
        if(getEventType(event).equalsIgnoreCase("default"))
        {
            Toast.makeText(getApplicationContext(), "Shubbham_test"+ event.getEventType(), Toast.LENGTH_LONG);
            Intent i = new Intent(getApplicationContext(),LoginScreen.class);
            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK  | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
            i.putExtra(SMLockService.SERVICE_OPCODE,SMLockService.MSG_SERVICE_OPCODE);
            getApplicationContext().startActivity(i);       
        }
    }

    @Override
    public void onInterrupt() 
    {
        // TODO Auto-generated method stub
        Toast.makeText(getApplicationContext(), "Shubbham_test"+ "onInterrupt", Toast.LENGTH_LONG).show();;
    }

    @Override
        public void onServiceConnected()
        {
         AccessibilityServiceInfo info = new AccessibilityServiceInfo();
            info.eventTypes = AccessibilityEvent.TYPES_ALL_MASK;
            info.packageNames = new String[]{"com.facebook.katana", "com.facebook.orca"};
            info.notificationTimeout = 100;
            info.feedbackType = AccessibilityServiceInfo.FEEDBACK_SPOKEN;
            setServiceInfo(info);
        }

    public String getEventType(AccessibilityEvent event) {
        switch (event.getEventType()) {
            case AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED:
                return "TYPE_NOTIFICATION_STATE_CHANGED";
            case AccessibilityEvent.TYPE_VIEW_CLICKED:
                return "TYPE_VIEW_CLICKED";
            case AccessibilityEvent.TYPE_VIEW_FOCUSED:
                return "TYPE_VIEW_FOCUSED";
            case AccessibilityEvent.TYPE_VIEW_LONG_CLICKED:
                return "TYPE_VIEW_LONG_CLICKED";
            case AccessibilityEvent.TYPE_VIEW_SELECTED:
                return "TYPE_VIEW_SELECTED";
            case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED:
                return "TYPE_WINDOW_STATE_CHANGED";
            case AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED:
                return "TYPE_VIEW_TEXT_CHANGED";
        }
        return "default";
    }

    public String getEventText(AccessibilityEvent event) {
        StringBuilder sb = new StringBuilder();
        for (CharSequence s : event.getText()) {
            sb.append(s);
        }
        return sb.toString();
    }
}