Android SeekBar设置进度值

本文介绍了Android SeekBar设置进度值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

每当我单击按钮时，我都希望更改SeekBar进度.使用setProgress()仅适用于初始值.如果在进行一些更改后使用它，则会引发错误.

I want the SeekBar progress to change whenever I click a button. Using setProgress() works only for initial value. It throws an error if I use it after some changes.

推荐答案

也许您应该尝试使用处理程序?我在我的一个应用程序中使用了它，并且工作正常.

Perhaps you should try to use a handler? I use this in an app of mine and works fine.

1)创建SeekBar时:

1) When creating your SeekBar:

// ... seekBarHandler = new Handler(); // must be created in the same thread that created the SeekBar seekBar = (SeekBar) findViewById(R.id.my_seekbar); // you should define max in xml, but if you need to do this by code, you must set max as 0 and then your desired value. this is because a bug in SeekBar (issue 12945) (don't really checked if it was corrected) seekBar.setMax(0); seekBar.setMax(max); seekBar.setProgress(progress); // ...

2)单击您的按钮

// ... seekBarHandler.post(new Runnable() { @Override public void run() { if (seekBar != null) { seekBar.setMax(0); seekBar.setMax(max); seekBar.setProgress(newProgress); } } }); // ...