Question

我试图在屏幕上显示一个计时器，在屏幕上我有一个TextView和一个RecyclerView RecyclerView包含一些Spinners 执行onTick()方法时，Spinners会自动关闭。

请提供此问题的任何解决方案。

我的CountDownTimer代码

 public class CountDownTimerClass extends CountDownTimer {

    public CountDownTimerClass(long millisInFuture, long countDownInterval) {

        super(millisInFuture, countDownInterval);

    }

    @Override
    public void onTick(long millisUntilFinished) {
        String time = String.format(Locale.US, "%02d:%02d:%02d",
                TimeUnit.MILLISECONDS.toHours(millisUntilFinished),
                TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) -
                        TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millisUntilFinished)),
                TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
                        TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished)));
        mTvTimer.setText(time);

    }

    @Override
    public void onFinish() {


    }
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_member_enter_details);

    mRecyclerView = (RecyclerView) findViewById(R.id.recycleView);
    mTvTimer = (TextView) findViewById(R.id.tv_timer);
    mTvBlockNo = (TextView) findViewById(R.id.tv_block_no);
    mRlHeader = findViewById(R.id.rlHeader);

    //hit for web service. In the response i am starting timer 
    getData(Event.GET_EXPIRATION_TIME); 
}

Answer 1

非常确定它正在关闭，因为你在另一个视图上调用了setText。这可能会触发焦点更改，从而导致Spinner关闭。

您可以通过在TextView上将focusable设置为false（最好是通过XML），或者在clearFocus()

之后调用TextView上的setText()来避免这种情况

Answer 2

您应该更新UI线程中的标签或textview文本，因此您的代码应该是

public void onTick(long millisUntilFinished) {
    String time = String.format(Locale.US, "%02d:%02d:%02d",
            TimeUnit.MILLISECONDS.toHours(millisUntilFinished),
            TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) -
                    TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millisUntilFinished)),
            TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
                    TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished)));
    runOnUiThread(new Runnable() {
        @Override
        public void run() {
           mTvTimer.setText(time);
        }
    });

}

在CountDownTimer中设置一些文本时，Spinner关闭

2 个答案: