Android Thread第二次Thread.start()报错的疑问

网上说Thread不需要stop()的原因是因为运行到尾部就会自动释放,而代码:
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Thread myThread = new Thread(new Runnable() {
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    @Override
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    public void run() {
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        // TODO Auto-generated method stub
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        Log.i("thread", "" + count);
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        while (runable) {
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                count++;
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                try {
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                    Thread.sleep(100);
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                } catch (Exception e) {
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                }
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                Message msg = mhandler.obtainMessage(FLAG_UPDATE, 0, 0);
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                mhandler.sendMessage(msg);
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            }
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    }
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});
在第二次start()的时候,系统抛出异常:java.lang.IllegalThreadStateException: Thread already started.
这是个很悲催的事情,而我现在也只能,这样:
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Thread myThread = new Thread(new Runnable() {
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    @Override
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    public void run() {
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        // TODO Auto-generated method stub
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        Log.i("thread", "" + count);
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        while (true) {
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            if (runable) {
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                count++;
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                try {
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                    Thread.sleep(100);
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                } catch (Exception e) {
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                }
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                Message msg = mhandler.obtainMessage(FLAG_UPDATE, 0, 0);
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                mhandler.sendMessage(msg);
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            }
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        }
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    }
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});
        不过这样的牺牲就是有线程在无限循环...性能...
        不知列位大牛是怎么处理这里的。
 
这个已经解决了,可以写一个继承Thread的类,或者写一个Runnable,然后再new Thread(xx).start();就可以了,回头看一下,真小白啊!

新代码如下:
创建一个Runnable,用于Thread执行

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Runnable sendable = new Runnable() {
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    @Override
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    public void run() {
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        // TODO Auto-generated method stub
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    }
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};
run方法中写上需要操作的逻辑,然后这样调用:


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new Thread(sendable).start();
这样,每次需要调用的时候会重新new一个Thread,大体是这样,但可以无限次数运行。

 

 

转:http://my.oschina.net/ldaga/blog/65213

posted on 2013-03-08 13:59  jiezzy  阅读(3272)  评论(0编辑  收藏  举报