android开发使用java 每秒刷新UI

//设置全局变量
charge_state = findViewById(R.id.charge_state);
// java 开启定时器
Timer timer = new Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
charge_state.setText(“设置的内容”);
}
}, 0, 1000);
//关闭定时器
@Override
protected void onStop() {
timer.cancel();
super.onStop();
}