TimePicker Dialog在创建时检索，而不是当前时间，如果活动保持打开状态，它将不会更改

Question

TimePicker Dialog检索onCreate时间，而不是当前时间，如果活动保持打开状态，它不会改变...我希望对话框始终显示当前时间，而不仅仅是活动开始时。我目前在onCreate中使用以下内容：

    final Calendar onscene = Calendar.getInstance();
    buildingfireonsceneHour = onscene.get(Calendar.HOUR_OF_DAY);
    buildingfireonsceneMinute = onscene.get(Calendar.MINUTE);

Answer 1

将updateTimer（）函数传递给打开对话框之前的当前时间，例如：

    mTimePickerDialog = new TimePickerDialog(this, null, 0, 0, false);

    Button button = (Button) findViewById(R.id.button1);
    button.setOnClickListener(new OnClickListener() {
        public void onClick(View view) {
            Calendar calendar = Calendar.getInstance();
            mTimePickerDialog.updateTime(calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE));
            mTimePickerDialog.show();
        }
    });

**加法**

我相信你想覆盖onPrepareDialog（）函数，如下所示：

@Override
protected void onPrepareDialog (int id, Dialog dialog, Bundle args) {
    super.onPrepareDialog(id, dialog, args);
    if(id != DATE_DIALOG_ID) {
        final Calendar c = Calendar.getInstance();
        ((TimePickerDialog) dialog).updateTime(c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE));
    }
}