Android开发模仿qq视频通话悬浮按钮(实例代码)

模仿qq视频通话的悬浮按钮的实例代码，如下所示；

public class FloatingWindowService extends Service{
  private static final String TAG="OnTouchListener";
  private static View mView = null;
  private static WindowManager mWindowManager = null;
  private static Context mContext = null;
  public static Boolean isShown = false;
  public WindowManager.LayoutParams params = null;
  private int pixel;
  private int TheOffset;
  @Override
  public void onCreate() {
    super.onCreate();
  }
  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    pixel = intent.getIntExtra("pixel",1);
    showPopupWindow(this);
    return super.onStartCommand(intent, flags, startId);
  }
  
  private void showPopupWindow(final Context context) {
    if (isShown) {
      return;
    }
    isShown = true;
    // 获取应用的Context
    mContext = context.getApplicationContext();
    // 获取WindowManager
    mWindowManager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
    params = new WindowManager.LayoutParams();
    mView = setUpView(context);
    // 类型
    params.type = WindowManager.LayoutParams.TYPE_SYSTEM_alert;
    int flags=WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
    params.flags = flags;
    params.format = PixelFormat.TRANSLUCENT;
    params.width = WindowManager.LayoutParams.WRAP_CONTENT;
    params.height = WindowManager.LayoutParams.WRAP_CONTENT;
    params.gravity = Gravity.CENTER;
    mWindowManager.addView(mView, params);
  }
  
  private static void hidePopupWindow() {
    if (isShown && null != mView) {
      mWindowManager.removeView(mView);
      isShown = false;
    }
  }
  private  int x=0;
  private  int y=0;
  private  int startX=0;
  private  int startY=0;
  private View setUpView(final Context context) {
    View view = LayoutInflater.from(context).inflate(R.layout.popupwindow,
 null);
     TextView tv= (TextView) view.findViewById(R.id.title);
    int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
    int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
    tv.measure(w, h);
    TheOffset=(pixel-tv.getMeasuredWidth())/2-50;
    tv.setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View v) {
 Intent intent =new Intent(context,MainActivity.class);
 context.startActivity(intent);
 // Toast.makeText(context,"点击事件",Toast.LENGTH_LONG).show();
      }
    });
    tv.setonTouchListener(new View.onTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
 switch (event.getAction()){
   case MotionEvent.ACTION_MOVE:
     int newX= (int) (event.getRawX()-x);
     int newY= (int) (event.getRawY()-y);
     params.x=newX+startX;
     params.y=newY+startY;
mWindowManager.updateViewLayout(mView,params);
     break;
   case MotionEvent.ACTION_DOWN:
     x= (int) event.getRawX();
     y= (int) event.getRawY();
     break;
   case MotionEvent.ACTION_UP:
     if(params.x>=0){
params.x=TheOffset;
mWindowManager.updateViewLayout(mView,params);
     }
     if(params.x<=-0){
params.x=-TheOffset;
mWindowManager.updateViewLayout(mView,params);
     }
     Log.i(TAG,params.x+"");
     Log.i(TAG,params.y+"");
     //判断 从按住到抬起时候的移动距离， 如果如果移动距离大于20 那么就拦截事件，否则就不拦截事件，主要是处理点击事件的冲突
     if(Math.abs(startX-params.x)>20 ||Math.abs(startY-params.y)>20 ){
//记录上一次的偏移量
startX=params.x;
startY=params.y;
return true;
     }else {
startX=params.x;
startY=params.y;
return false;
     }
 }
 return false;
      }
    });
    return view;
  }
  @Nullable
  @Override
  public IBinder onBind(Intent intent) {
    return null;
  }
  @Override
  public void onDestroy() {
    super.onDestroy();
    if (mView != null) {
      isShown=false;
      mWindowManager.removeView(mView);
    }
  }
  }

Main  

@Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      findViewById(R.id.open).setonClickListener(this);
      findViewById(R.id.close).setonClickListener(this);
    }

-点击开启 关闭悬浮按钮 

@Override
    public void onClick(View v) {
      switch (v.getId()){
 case R.id.open:
   //判断是否拥有悬浮权限
   //op 的值是 0 ~ 47，其中0代表粗略定位权限，1代表精确定位权限，24代表悬浮窗权限。（具体可以看看Android源码在android.app下就有个AppOpsManager类）
   if(utils.checkOp(this,24)==0) {
     Intent intent=new Intent(MainActivity.this, FloatingWindowService.class);
     intent.putExtra("pixel",utils.pixel(this)[0]);
     startService(intent);
   }else {
     //引导用户进入悬浮权限设置界面
     Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
  Uri.parse("package:" + getPackageName()));
     startActivityForResult(intent, 200);
   }
   break;
 case R.id.close:
   stopService(new Intent(MainActivity.this,FloatingWindowService.class));
   break;
      }
    }

判断权限 -获取屏幕的宽高 

public class utils {
      public static int checkOp(Context context, int op){
 final int version = Build.VERSION.SDK_INT;
 if (version >= 19){
   Object object = context.getSystemService("appops");
   Class c = object.getClass();
   try {
     Class[] cArg = new Class[3];
     cArg[0] = int.class;
     cArg[1] = int.class;
     cArg[2] = String.class;
     Method lMethod = c.getDeclaredMethod("checkOp", cArg);
     return (Integer) lMethod.invoke(object, op, Binder.getCallingUid(), context.getPackageName());
   } catch(NoSuchMethodException e) {
     e.printStackTrace();
   } catch (IllegalAccessException e) {
     e.printStackTrace();
   } catch (IllegalArgumentException e) {
     e.printStackTrace();
   } catch (InvocationTargetException e) {
     e.printStackTrace();
   }
 }
 return -1;
      }
      
      public static int[] pixel(Activity context){
 DisplayMetrics dm = new DisplayMetrics();
 context.getWindowManager().getDefaultDisplay().getMetrics(dm);
 return new int[]{dm.widthPixels,dm.heightPixels};
      }
    }

--popupwindow填充布局文件 

以上所述是小编给大家介绍的Android开发模仿qq视频通话悬浮按钮(实例代码)，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对考高分网网站的支持！