我一直在尝试在屏幕顶部制作一个带有浮动小部件的应用程序。通过在线查看示例，我终于组装了一个基本的东西。
但是，每当我尝试关闭应用程序时，它都会自行重启，除非我通过进入“应用程序信息”强制停止它。
让我尝试在这里发布我的代码... MainActivity
public class MainActivity extends AppCompatActivity {
/* Permission request code to draw over other apps */
private static final int DRAW_OVER_OTHER_APP_PERMISSION_REQUEST_CODE = 1222;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
/* start floating widget service */
public void createFloatingWidget(View view) {
//Check if the application has draw over other apps permission or not?
//This permission is by default available for API<23. But for API > 23
//you have to ask for the permission in runtime.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(this)) {
//If the draw over permission is not available open the settings screen
//to grant the permission.
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, DRAW_OVER_OTHER_APP_PERMISSION_REQUEST_CODE);
} else
//If permission is granted start floating widget service
startFloatingWidgetService();
}
/* Start Floating widget service and finish current activity */
private void startFloatingWidgetService() {
startService(new Intent(MainActivity.this, FloatingWidgetService.class));
//startService(new Intent(context, ServiceChatHead.class));
finish();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == DRAW_OVER_OTHER_APP_PERMISSION_REQUEST_CODE) {
//Check if the permission is granted or not.
if (resultCode == RESULT_OK)
//If permission granted start floating widget service
startFloatingWidgetService();
else
//Permission is not available then display toast
Toast.makeText(this,
getResources().getString(R.string.draw_other_app_permission_denied),
Toast.LENGTH_SHORT).show();
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
和 FloatingWidgetService
public class FloatingWidgetService extends Service {
private WindowManager windowManager;
private ImageView chatImage;
private GestureDetector gestureDetector;
@Override public IBinder onBind(Intent intent) {
// Not used
return null;
}
@Override public void onCreate() {
super.onCreate();
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
gestureDetector = new GestureDetector(this, new SingleTapConfirm());
chatImage = new ImageView(this);
chatImage.setImageResource(R.drawable.inosukes);
final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
//WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.TOP | Gravity.LEFT;
params.x = 0;
params.y = 100;
chatImage.setOnTouchListener(new View.OnTouchListener() {
private int initialX;
private int initialY;
private float initialTouchX;
private float initialTouchY;
@Override
public boolean onTouch(View arg0, MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) {
// single tap
if (chatImage != null) windowManager.removeView(chatImage);
return true;
} else {
// for move and drag
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
initialX = params.x;
initialY = params.y;
initialTouchX = event.getRawX();
initialTouchY = event.getRawY();
return true;
case MotionEvent.ACTION_UP:
return true;
case MotionEvent.ACTION_MOVE:
params.x = initialX + (int) (event.getRawX() - initialTouchX);
params.y = initialY + (int) (event.getRawY() - initialTouchY);
windowManager.updateViewLayout(chatImage, params);
return true;
}
return false;
}
}
});
windowManager.addView(chatImage, params);
}
private class SingleTapConfirm extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onSingleTapUp(MotionEvent event) {
return true;
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (chatImage != null) windowManager.removeView(chatImage);
//this is not helping to close the app?
System.exit(0);
}
}
非常感谢您！