AppCompatSpinner的条目在第二次选择它时没有打开TimePickerDialog。请看详情 [英] AppCompatSpinner's entries not opening TimePickerDialog on selecting it second time. Please see details
本文介绍了AppCompatSpinner的条目在第二次选择它时没有打开TimePickerDialog。请看详情的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有以下 AppCompatSpinner 的条目：
<string-array name="startTimeList">
<item>Now</item>
<item>Pick a time..</item>
</string-array>
选择选择时间.. ，打开 TimePickerDialog ，允许用户选择时间。方法如下：
Upon selecting Pick a time.., a TimePickerDialog is opened and the user is allowed to choose a time. Here's how:
startTimeSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
// startTimeString = adapterView.getItemAtPosition(i).toString();
DateFormat currentDateFormat = new SimpleDateFormat("HH:mm:ss");
userAvailableTimeInSF = currentDateFormat.format(new Date());
final TextView startTimeSpinnerTV = (TextView) adapterView.getSelectedView();
startTimeSpinnerTV.setText(userAvailableTimeInSF);
switch (i) {
case 0:
userAvailableTimeInSF = currentDateFormat.format(new Date());
startTimeSpinnerTV.setText("Now");
break;
default:
final Calendar c = Calendar.getInstance();
mHour = c.get(Calendar.HOUR_OF_DAY);
mMinute = c.get(Calendar.MINUTE);
TimePickerDialog timePickerDialog = new TimePickerDialog(PostSportRequest.this,
new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay,
int minute) {
Calendar date = Calendar.getInstance();
date.set(Calendar.HOUR_OF_DAY, hourOfDay);
date.set(Calendar.MINUTE, minute);
date.set(Calendar.AM_PM, date.get(Calendar.AM_PM));
showTime(hourOfDay, minute);
userAvailableTimeInSF = new SimpleDateFormat("HH:mm:ss").format(date.getTime());
startTimeSpinnerTV.setText(userAvailableTimeAMPM);
Toast.makeText(getBaseContext(), "userAvailableTimeInSF: " + userAvailableTimeInSF, Toast.LENGTH_SHORT).show();
}
}, mHour, mMinute, false);
timePickerDialog.show();
break;
}
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
选择选择时间.. 第一次，TimePickerDialog成功打开并显示所选时间，但是当我再次选择它或再次点击它时，没有任何反应！
Upon selecting Pick a time.. the first time, TimePickerDialog is successfully opened and the chosen time is shown but when I choose it again or click on it again, nothing happens!
我不知道为什么！
请告诉我如何打开TimePickerDialog并选择时间，无论我选择/点击它多少次。
Please let me know how can I get the TimePickerDialog opened and chose the time no matter how many times I select/click it.
推荐答案
请按照以下步骤操作：
创建自定义微调器类
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Spinner;
public class SpinnerOnSameSelection extends Spinner {
OnItemSelectedListener listener;
private AdapterView<?> lastParent;
private View lastView;
private long lastId;
public SpinnerOnSameSelection(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
initlistner();
}
@Override
public void setSelection(int position) {
if (position == getSelectedItemPosition() && listener != null) {
listener.onItemSelected(lastParent, lastView, position, lastId);
} else {
super.setSelection(position);
}
}
private void initlistner() {
// TODO Auto-generated method stub
super.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
lastParent = parent;
lastView = view;
lastId = id;
if (listener != null) {
listener.onItemSelected(parent, view, position, id);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
if (listener != null) {
listener.onNothingSelected(parent);
}
}
});
}
public void setOnItemSelectedEvenIfUnchangedListener(
OnItemSelectedListener listener) {
this.listener = listener;
}
}
创建<$ c您活动中的$ c> onItemSelectedListener
Create onItemSelectedListener in your activity
private AdapterView.OnItemSelectedListener listener;
listener = new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapterView, View arg1,
int i, long arg3) {
//startTimeString = adapterView.getItemAtPosition(i).toString();
DateFormat currentDateFormat = new SimpleDateFormat("HH:mm:ss");
userAvailableTimeInSF = currentDateFormat.format(new Date());
final TextView startTimeSpinnerTV = (TextView) adapterView.getSelectedView();
startTimeSpinnerTV.setText(userAvailableTimeInSF);
switch (i) {
case 0:
// userAvailableTimeInSF = currentDateFormat.format(new Date());
startTimeSpinnerTV.setText("Now");
break;
case 1:
final Calendar c = Calendar.getInstance();
mHour = c.get(Calendar.HOUR_OF_DAY);
mMinute = c.get(Calendar.MINUTE);
TimePickerDialog timePickerDialog = new TimePickerDialog(MainActivity.this,
new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay,
int minute) {
Calendar date = Calendar.getInstance();
date.set(Calendar.HOUR_OF_DAY, hourOfDay);
date.set(Calendar.MINUTE, minute);
date.set(Calendar.AM_PM, date.get(Calendar.AM_PM));
//showTime(hourOfDay, minute);
/* userAvailableTimeInSF = new SimpleDateFormat("HH:mm:ss").format(date.getTime());
startTimeSpinnerTV.setText(userAvailableTimeAMPM);*/
Toast.makeText(getBaseContext(), "userAvailableTimeInSF: " + userAvailableTimeInSF, Toast.LENGTH_SHORT).show();
}
}, mHour, mMinute, false);
timePickerDialog.show();
break;
}
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
};
}
将侦听器对象添加到自定义微调器方法
SpinnerOnSameSelection startTimeSpinner;
in onCreate(): startTimeSpinner = (SpinnerOnSameSelection) findViewById(R.id.idOfItemInXml);
startTimeSpinner.setOnItemSelectedEvenIfUnchangedListener(listener);
在您的 xml 文件
In Your xml File
<your_package_name.SpinnerOnSameSelection
android:id="@+id/startTimeSpinner"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignParentBottom="true"
android:entries="@array/mList">
</your_package_name.SpinnerOnSameSelection>
这篇关于AppCompatSpinner的条目在第二次选择它时没有打开TimePickerDialog。请看详情的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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