音频搜索栏主题问题？ [英] Audio seekBar Thread Problem?

问题描述

本来我有一个MediaPlayer的mPlayers播放/暂停/停止我的音乐文件。现在，我想添加一个搜索栏为我的媒体。我尝试使用线程，这就是我想出了：

Originally, I had a MediaPlayer mPlayers to play/pause/stop my Audio file. Now, I'm trying to add a seek bar for my media. I tried using Threads and this is what I came up with:

在的onCreate（）：

In onCreate() :

seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress,
                boolean fromUser) {
            // TODO Auto-generated method stub
            mPlayer.seekTo(progress);
        }

////........Omitted Code..........\\\\

//At the very end of the method:
seekThread  = new Thread(this); //My Activity implements:Runnable
seekThread.start();

然后，我实现了一个方法的run（）更新我的搜索栏每1秒：

Then, I implemented a method run() to update my seek bar every 1 sec:

public void run() {
    try {
        while(mPlayer != null){
            int currentPosition = mPlayer.getCurrentPosition();
            Message msg = new Message();
            msg.what = currentPosition;
            threadHandler.sendMessage(msg);
            Thread.sleep(1000);
        }

    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}
private Handler threadHandler = new Handler(){
    public void handleMessage(Message msg){
        seekBar.setProgress(msg.what);
    }
};

不过，在我的 HTC魔术的，音频低效运行。有些话是重复的。这似乎是搜索栏要回有点每隔一定的时间。

However, In my HTC Magic, the audio run inefficiently. Some words are repeated. It seems like the seek bar is going back a little bit every some time.

为了让你理解这个问题很好，让我们这样说：如果音频说：ABCDEFGHIJKLMN，那么这将是这样的：abccdeffghijjklmnn

To make you understand the problem well, Let's say this: if the audio says that: abcdefghijklmn , then it will be like this: abccdeffghijjklmnn.

您建议我的线程的任何改善？我这样做对吗？

推荐答案

不知道这会帮助，但尝试：

Not sure this will help, but try:

seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
    @Override
    public void onProgressChanged(SeekBar seekBar, int progress,
            boolean fromUser) {
        if (fromUser) {
            mPlayer.seekTo(progress);
        }
    }

如果没有这个条件，mPlayer.seekTo（进度）;被称为每次调用seekBar.setProgress（msg.what）;

Without this condition, mPlayer.seekTo(progress); is called every time you call seekBar.setProgress(msg.what);

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