Android 按键 亮度对话框滑动时不能消失，点击或滑动需要动态改变亮度值和动画效果

Posted 2022-01-05 王睿丶

【思路】

• 1、在滑动回调里发送广播给 BrightnessDialog 后台进行计算，同样以BrightnessDialog 的num值作为是否关闭对话框的标准。（解决：滑动时不会消失）
• 2、在滑动回调将异步操作改为动态操作（解决：点击或滑动不能动态改变亮度值和动画效果）

frameworks/base/packages/SystemUI/src/com/android/systemui/settings/BrightnessController.java

@Override
    public void onChanged(ToggleSlider toggleSlider, boolean tracking, boolean automatic,int value, boolean stopTracking) 
     if (mSliderAnimator != null) 
            mSliderAnimator.cancel();
            //滑动时无法消失亮度对话框
            Intent intent = new Intent("xxx.brightness");
            mContext.sendBroadcast(intent);
        

public void onChanged(ToggleSlider toggleSlider, boolean tracking, boolean automatic,int value, boolean stopTracking) 
   源代码：
   if (!tracking) 
            AsyncTask.execute(new Runnable() 
                    public void run() 
                        Settings.System.putFloatForUser(mContext.getContentResolver(),
                                settingToChange, valFloat, UserHandle.USER_CURRENT);
                    
      );


改动后：
 if (!tracking) 
            //wangrui Cancel asynchronous operation, dynamically change with user adjustment
            Settings.System.putFloatForUser(mContext.getContentResolver(),
                    Settings.System.SCREEN_BRIGHTNESS_FLOAT, valFloat,
                    UserHandle.USER_CURRENT_OR_SELF);