我试图制作一个倒数计数器,其中用户单击按钮即可停止倒数。
我在互联网上搜索了一种方法来停止控制倒数的线程。
我试图使用interrupt
,Interrupted
而stop
却没有成功地阻止使用任何这些方法的线程。
问题:如何停止控制倒数计数器的线程?
public class Main2Activity extends AppCompatActivity {
TextView mTextField;
Button stop;
Activity myActivity;
PrimeThread T1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
myActivity=this;
mTextField = (TextView) findViewById(R.id.counter);
T1=new PrimeThread();
T1.start(); }
public void stop(View view){ T1.interrupt(); }
class PrimeThread extends Thread {
int i=10;
public void run() {
while(i>0){
myActivity.runOnUiThread(new Runnable() {
@Override
public void run() {
mTextField.setText("00:0"+i);
}
});
i--;
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}}}
}
您可以在线程中放置一个标志:
public class Main2Activity extends AppCompatActivity {
TextView mTextField;
Button stop;
Activity myActivity;
PrimeThread T1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
myActivity=this;
mTextField = (TextView) findViewById(R.id.counter);
T1=new PrimeThread();
T1.start(); }
public void stop(View view){ T1.stopRunning(); }
class PrimeThread extends Thread {
int i=10;
boolean running = false;
public void run() {
running = true;
while(running && i < 10){
i++;
myActivity.runOnUiThread(new Runnable() {
@Override
public void run() {
mTextField.setText("00:0"+i);
}
});
i--;
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void stopRunning(){
running = false;
}
}
}
本文收集自互联网,转载请注明来源。
如有侵权,请联系[email protected] 删除。
我来说两句