现在，当我改变活动时，我的线缝要睡觉什么的。当我回到主要活动时，有两个线程在运行，做同样的事情。我不确定是否是这种情况，但它似乎是平等的。
...
public class MainActivity extends Activity {
public static double cowCount = 195;
public static double income = 0.100;
static boolean twiceCow = false, Threadrunning = false;
...
public void inc() {
new Thread(new income()).start();
}
class income implements Runnable {
@Override
public void run() {
for (int i = 0; i < 20;) {
final int value = i;
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
handler.post(new Runnable() {
@Override
public void run() {
cowCount = cowCount + income;
refresh();
}
});
}
}
}
这就是我的线程的样子。
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
handler = new Handler();
checkThread();
}
private void checkThread() {
if (Threadrunning == false)
inc();
Threadrunning = true;
}
public void inc() {
new Thread(new income()).start();
}
...
public void refresh () {
TextView myTextView = (TextView)findViewById(R.id.myText);
myTextView.setText("You Have " + String.valueOf((nf.format(cowCount)) + " Cows!"));
}
我真的不明白我做错了什么。