如何检测搜索栏进度变化是减少还是增加？

Question

进度变化事件可以在接口OnSeekBarChangeListener()中通过onProgressChanged通知。

但是如何知道变化是减少进度还是增加进度？或者是否有类似的接口或方法： onSeekBarProgressDecreased(....) 或 onSeekBarProgressIncreased(...)

Answer 1

private prevValue;

seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {



              @Override

              public void onProgressChanged(SeekBar seekBar, int progresValue, boolean fromUser) {
if(progressValue < prevValue){

                  Toast.makeText(getApplicationContext(), "Progress decreased", Toast.LENGTH_SHORT).show();

              }else if(progressValue > prevValue){


Toast.makeText(getApplicationContext(), "Progress increased", Toast.LENGTH_SHORT).show();
}

prevValue = progresValue;

}
    ....


                }

Answer 2

没有可用于进度减少或增加事件的接口。你必须跟踪它。你可以使用这样的东西。

int prevProgress;
mSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener(){
     @Override
      public oid onProgressChanged (SeekBar seekBar, int progress, boolean fromUser){
       int diff = progress - prevProgress;
       if(diff > 0){
          //increase
          }
       else{
          //decrease
          }
        prevProgress = progress;
      }

});

如何检测搜索栏进度变化是减少还是增加？

How to detect whether a seekbar progress change is decreasing or increasing?

android

seekbar