Android 延时执行任务的三种简单方法

new Thread() {
@Override
public void run() {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
startActivity(new Intent(LeadActivity.this, WelcomeActivity.class));
}
}.start();

handler.postDelayed(new Runnable() {
@Override
public void run() {
startActivity(new Intent(LeadActivity.this, WelcomeActivity.class));
}
},3000);
}

TimerTask task = new TimerTask() {
@Override
public void run() {
startActivity(new Intent(LeadActivity.this, WelcomeActivity.class));
}
};
Timer timer = new Timer();
timer.schedule(task,1000);
}