java - 当我第二次运行线程时 : java. lang.IllegalThreadStateException: 线程已经启动

Question

我有 Thrad 和 Handler:

Handler handler = new Handler() {
    @Override
    public void handleMessage(android.os.Message msg) {
        super.handleMessage(msg);
        //do somethink
    }
};

Thread thread = new Thread(new Runnable() {
    @Override
    public void run() {
        //do somethink
        msg.obj = 1;
        handler.sendMessage(msg);
        thread.interrupt();
    }
});

当应用启动时，第一次 thread.start(); 一切正常。 但是当我第二次尝试从按钮启动 thread.start(); 时，我有:

E/MessageQueue-JNI﹕ java.lang.IllegalThreadStateException: Thread already started.

Answer 1

您应该在启动之前检查该线程的状态。

if (thread.getState() == Thread.State.NEW)
{
     thread.start();
}