java Thread.interrupt() 不起作用
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Thread.interrupt () doesn't work
提问by user547995
Hy!
嗨！
My Thread.interrupt doesn't work.
我的 Thread.interrupt 不起作用。
Code (us is global):
代码（我们是全球的）：
//Call
us = new UpdateState(params, hup);
us.start();
//Interupt
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId()== R.id.stopthread)
{
Log.e("Kill", "Kill");
us.interrupt();
}
return super.onOptionsItemSelected(item);
}
Class:
班级：
package android.skiptvad;
import java.util.List;
import org.apache.http.NameValuePair;
import android.os.Handler;
import android.os.Message;
import android.text.NoCopySpan.Concrete;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
import android.util.Log;
public class UpdateState extends Thread {
public List<NameValuePair> params;
public Handler handler;
public Handler ins;
public UpdateState(List<NameValuePair> params, final Handler handler) {
this.handler = handler;
this.params = params;
this.ins = new Handler (){
@Override
public void handleMessage(Message msg) {
if (msg.obj.toString()!= null)
{
JSONParse json = null;
try
{
Message msg2 =new Message();
Log.e("Channel_State_Update",msg.obj.toString());
json = new JSONParse(msg.obj.toString());
String state = json.getChannelState();
Log.e("Channel_State_Send",state);
msg2.obj = state;
handler.sendMessage(msg2);
}
catch (final Exception e)
{
e.printStackTrace();
}
}
}
};
}
@Override
public void run() {
while (true)
{
if (!this.isInterrupted())
{
HttpConnection con = new HttpConnection(params, "http://surfkid.redio.de/getChannelState", this.ins);
con.start();
try {
Log.e("Sleep", "Begin");
UpdateState.this.sleep(5000);
Log.e("Sleep", "End");
} catch (InterruptedException e) {
// TODO Auto-generated catch block
Log.e("Sleep", "Error");
e.printStackTrace();
}
}
//super.run();
}
}
}
Please help
请帮忙
Log:
日志：
02-15 18:50:30.317: ERROR/Sleep(10696): End
02-15 18:50:30.347: ERROR/Sleep(10696): Begin
02-15 18:50:30.677: ERROR/Channel_State_Update(10696): {"responseData":{"channelState":"0"},"responseDetails":null,"responseStatus":200}
02-15 18:50:30.677: ERROR/Channel_State_Send(10696): 0
02-15 18:50:30.677: ERROR/UPDATE(10696): 0
02-15 18:50:35.347: ERROR/Sleep(10696): End
02-15 18:50:35.357: ERROR/Sleep(10696): Begin
02-15 18:50:35.897: ERROR/Channel_State_Update(10696): {"responseData":{"channelState":"0"},"responseDetails":null,"responseStatus":200}
02-15 18:50:35.897: ERROR/Channel_State_Send(10696): 0
02-15 18:50:35.897: ERROR/UPDATE(10696): 0
02-15 18:50:36.868: ERROR/Kill(10696): Kill
02-15 18:50:36.878: ERROR/Sleep(10696): Error
02-15 18:50:36.908: ERROR/Sleep(10696): Begin
02-15 18:50:37.427: ERROR/Channel_State_Update(10696): {"responseData":{"channelState":"0"},"responseDetails":null,"responseStatus":200}
02-15 18:50:37.427: ERROR/Channel_State_Send(10696): 0
02-15 18:50:37.427: ERROR/UPDATE(10696): 0
02-15 18:50:41.909: ERROR/Sleep(10696): End
02-15 18:50:41.927: ERROR/Sleep(10696): Begin
回答by axtavt
You need to break a loop when thread is interrupted:
当线程被中断时，您需要中断一个循环：
@Override
public void run() {
while (!this.isInterrupted()) { // Exit when thread's interrupt flag is set
HttpConnection con = new HttpConnection(params, "http://surfkid.redio.de/getChannelState", this.ins);
con.start();
try {
Log.e("Sleep", "Begin");
UpdateState.this.sleep(5000);
Log.e("Sleep", "End");
} catch (InterruptedException e) {
Log.e("Sleep", "Error");
e.printStackTrace();
// Restore interrupt flag after catching InterruptedException
// to make loop condition false
Thread.currentThread().interrupt();
}
}
}
回答by Chris Dennett
What do you expect to happen? You have the interrupt exception in a massive while loop :) You need to write break; inside the exception part for it to exit the loop. The if !this.isInterrupted()line only makes the loop extremely tight by eliminating the code inside, but the loop is still there on the outside.
你期望发生什么？你在大量的 while 循环中有中断异常:) 你需要写 break; 在异常部分内使其退出循环。该if !this.isInterrupted()行仅通过消除内部代码使循环变得非常紧密，但循环仍然存在于外部。
