如何旋转系统覆盖按钮

-1

我在互联网上发现了这个代码，它的工作原理。如何旋转系统覆盖按钮

它创建一个系统覆盖按钮，我可以在屏幕上移动它。

我该怎么做，这个按钮现在应该能够旋转？

也许作为一个双手旋转。

Package de.mobilej.overlay; 
import android.app.Service; 
import android.content.Context; 
import android.content.Intent; 
import android.graphics.PixelFormat; 
import android.os.IBinder; 
import android.view.Gravity; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.View.OnTouchListener; 
import android.view.WindowManager; 
import android.view.WindowManager.LayoutParams; 
import android.widget.Button; 
import android.widget.Toast; 

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("TEST TEST TEST TEST TEST TEST TEST TEST TEST"); 
    overlayedButton.setOnTouchListener(this); 
    overlayedButton.setBackgroundColor(0x55fe4444); 
    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 = 10; 
    topLeftParams.height = 10; 
    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, "Overlay button click event", Toast.LENGTH_SHORT).show(); 

}}

来源

2016-08-17 Relax ober

你已经发布的代码使用旋转多点触控视图一个体面的问题不是你的问题真正相关的，你似乎并没有作出任何企图这个自己解决。堆栈溢出的人不会为你编写代码，他们可以帮助你修复你的代码。 – Tibrogargan

@Tibrogargan该代码与如何使用触摸旋转系统覆盖物品的问题极其相关。堆栈溢出是用于提出可以用从哪里开始或从何处获得更多信息等简单的事情来回答的问题。不要让它成为恶劣的环境。 – LoungeKatt

旋转系统叠加与旋转视图没有区别。您可以先截取触摸，然后将其转换为视图旋转。

要实现双指触摸旋转，您需要获取移动的大小，然后将其转换为旋转视图的度数。

一旦您获得了旋转角度，您就可以将其应用于布局。

有关于在rotation and scaling and move using multi touch in android

来源

2017-04-20 11:36:22 LoungeKatt

如何旋转系统覆盖按钮

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