用Timer进行延迟的代码，例如从欢迎界面进入主界面会有一段延迟时间。

public class WelcomeActivity extends Activity {
private ImageView welcomeiv;
private TextView welcometv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
final Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:
login();

break;
}
super.handleMessage(msg);
}
};
TimerTask task = new TimerTask() {
@Override
public void run() {
Message message = new Message();
message.what = 1;
handler.sendMessage(message);
}
};
Timer timer = new Timer(true);
timer.schedule(task,2000); // 延时1000ms后执行，1000ms执行一次
//timer.cancel(); //退出计时器
}
private void login(){
final Handler handler = new Handler(){
@Override
public void handleMessage(android.os.Message msg) {
switch (msg.what) {
case
//这里是根据返回值，分别做不同的操作。
break;
default:
break;
}
}
};
}
}