我的应用程序中有很多活动(例如 A->B->C->D)...A 是登录活动...我有一个倒数计时器,用于会话超时..我想要做什么是..注销用户..即如果在活动 B、C、D 中没有用户交互,则将他放回活动 A...我已经扩展了我的应用程序类并在其中实例化了我的计时器...但是在这个活动中,我无法清除先前活动的栈顶,即行
addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
抛出异常......知道我将如何解决这个问题......这是我的代码......
public class MyApp extends Application {
MyCount count;
@Override
public void onCreate() {
// reinitialize variable
count = new MyCount(5000, 1000);
}
public void startcounter() {
count.start();
}
public void cancelcounter() {
count.cancel();
}
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
@Override
public void onFinish() {
try{
Intent my = new Intent(getApplicationContext(), Login.class);
my.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(my);
Toast.makeText(getApplicationContext(), "Finsihed",
Toast.LENGTH_LONG).show();
}
catch(Exception e )
{
Toast.makeText(getApplicationContext(), String.valueOf(e),
Toast.LENGTH_LONG).show();
}
}
@Override
public void onTick(long millisUntilFinished) {
// TODO Auto-generated method stub
// Toast.makeText(getApplicationContext(), String.valueOf(millisUntilFinished/1000),
// Toast.LENGTH_LONG).show();
}
}
}