Android实现圆形菜单悬浮窗

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

int REQUEST_CODE = 520 ;  
    Intent intent= new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName()));
    startActivityForResult(intent, REQUEST_CODE);

private static final int RESULT_CODE_BOX = 10023;
    @Targetapi(Build.VERSION_CODES.M)
    private void checkBoxPower() {
        if (!Settings.canDrawOverlays(mContext)) {
            Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + mContext.getPackageName()));//权限申请页面
            Mactivity.startActivityForResult(intent, RESULT_CODE_BOX);
        }
    }

    @TargetApi(Build.VERSION_CODES.M)
    public void onActivityResult(int requestCode, int resultCode, Intent data){
        if(requestCode == RESULT_CODE_BOX){
            if (!Settings.canDrawOverlays(mContext)) {
                Log.e(TAG,"授权失败");
            } else {
                Log.e(TAG,"授权成功");
                //启动悬浮窗的Service
                Intent intent = new Intent(mActivity, FloatingService.class);
                mActivity.startService(intent);
            }
        }
    }

private WindowManager windowManager;
    private WindowManager.LayoutParams layoutParams;
    //悬浮窗的初始位置
    private static int FloatingInitialPosition_x = 50;
    private static int FloatingInitialPosition_y = 50;
    //初始化悬浮窗
    private void initFrame(){
        windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
        layoutParams = new WindowManager.LayoutParams();//windowManager的布局

        if (Build.VERSION.SDK_INT >= 26) { //8.0以上只能使用 TYPE_APPLICATION_OVERLAY窗口类型来创建悬浮窗
            layoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
        } else {
            layoutParams.type = WindowManager.LayoutParams.TYPE_PHONE;
        }

        layoutParams.fORMat = PixelFormat.RGBA_8888;//设置图片格式
        layoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
        layoutParams.gravity = Gravity.LEFT | Gravity.TOP;//悬浮框在布局的位置
        layoutParams.x = FloatingInitialPosition_x; //初始位置的x坐标,相对于gravity
        layoutParams.y = FloatingInitialPosition_y;
        layoutParams.width = WindowManager.LayoutParams.WRAP_CONTENT;//指定长宽
        layoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
        
        floatView = View.inflate(getApplicationContext(), R.layout.float_box_view, null);
    }
    //展示悬浮窗
    private View floatView;
    private void showFloatingWindow() {
        windowManager.addView(floatView, layoutParams);
    }

floatView.setOnTouchListener(new FloatinGonTouchListener()); //悬浮窗的滑动监听
    //滑动监听
    private class FloatingOnTouchListener implements View.OnTouchListener {
        private int x;
        private int y;
        @Override
        public boolean onTouch(View view, MotionEvent event) {
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    x = (int) event.getRawX();
                    y = (int) event.getRawY();
                    break;
                case MotionEvent.ACTION_MOVE:
                    int nowX = (int) event.getRawX();
                    int nowY = (int) event.getRawY();
                    int movedX = nowX - x;
                    int movedY = nowY - y;
                    x = nowX;
                    y = nowY;
                    layoutParams.x = layoutParams.x + movedX;
                    layoutParams.y = layoutParams.y + movedY;
                    windowManager.updateViewLayout(floatView, layoutParams);
                    break;
                default:
                    break;
            }
            return false;
        }
    }

public static boolean isAppOnForeground(Context context) {
        ActivityManager activityManager = (ActivityManager) context.getApplicationContext()
                .getSystemService(Context.ACTIVITY_SERVICE);
        String packageName = context.getApplicationContext().getPackageName();
        //获取Android设备中所有正在运行的App
        List<ActivityManager.RunningAppProcessInfo> appProcesses = activityManager.getRunningAppProcesses();
        if (appProcesses == null)
            return false;
        for (ActivityManager.RunningAppProcessInfo appProcess : appProcesses) {
            if (appProcess.processName.equals(packageName)
                    && appProcess.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
                return true;
            }
        }
        return false;
    }

InnerRecevier innerReceiver = new InnerRecevier();
        IntentFilter intentFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        reGISterReceiver(innerReceiver, intentFilter);

    class InnerRecevier extends BroadcastReceiver {
        final String SYSTEM_DIALOG_REASON_KEY = "reason";
        final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
        final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(action)) {
                String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
                if (reason != null) {
                    if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {
                        Toast.makeText(MainActivity.this, "Home键被监听", Toast.LENGTH_SHORT).show();
                    } else if (reason.equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) {
                        Toast.makeText(MainActivity.this, "多任务键被监听", Toast.LENGTH_SHORT).show();
                    }
                }
            }
        }
    }

ViewGroup view = (ViewGroup )AppActivity.getWindow().getDecorView();//获取最顶层的view
ViewGroup bannerContainer=(ViewGroup) View.inflate(AppActivity, R.layout.activity_banner_bottom, view).findViewById(R.id.bannerContainer);//为其添加一个布局
bannerContainer.addView(adVeiw);//把悬浮窗的view加进来