我一直在寻找一种解决方案来隐藏DatePicker中的以下任何一个微调器。对于Android 5.0，内部变量已更改，在我的情况下，在我的设备更新后，日和月旋转器再次可见。
Android 4.4和Kitkat解决方案
DatePicker dpDate = (DatePicker) findViewById(R.id.dpDate);
// Initialize Date Picker
int year = dpDate.getYear();
int month = dpDate.getMonth();
int day = dpDate.getDayOfMonth();
dpDate.init(year, month, day, this);
Field f[] = dpDate.getClass().getDeclaredFields();
for (Field field : f)
{
// Hides the DAY spinner
if(field.getName().equals("mDayPicker") || field.getName().equals("mDaySpinner"))
{
field.setAccessible(true);
Object dayPicker = new Object();
dayPicker = field.get(dpDate);
((View) dayPicker).setVisibility(View.GONE);
}
// Hides the MONTH spinner
if(field.getName().equals("mMonthPicker") || field.getName().equals("mMonthSpinner"))
{
field.setAccessible(true);
Object monthPicker = new Object();
monthPicker = field.get(dpDate);
((View) monthPicker).setVisibility(View.GONE);
}
// Hides the YEAR spinner
if(field.getName().equals("mYearPicker") || field.getName().equals("mYearSpinner"))
{
field.setAccessible(true);
Object yearPicker = new Object();
yearPicker = field.get(dpDate);
((View) myearPicker).setVisibility(View.GONE);
}
}
Android 5.0+棒棒糖解决方案
DatePicker dpDate = (DatePicker) findViewById(R.id.dpDate);
// Initialize Date Picker
int year = dpDate.getYear();
int month = dpDate.getMonth();
int day = dpDate.getDayOfMonth();
dpDate.init(year, month, day, this);
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
{
int daySpinnerId = Resources.getSystem().getIdentifier("day", "id", "android");
if (daySpinnerId != 0)
{
View daySpinner = dpDate.findViewById(daySpinnerId);
if (daySpinner != null)
{
daySpinner.setVisibility(View.GONE);
}
}
}
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
{
int monthSpinnerId = Resources.getSystem().getIdentifier("month", "id", "android");
if (monthSpinnerId != 0)
{
View monthSpinner = dpDate.findViewById(monthSpinnerId);
if (monthSpinner != null)
{
monthSpinner.setVisibility(View.GONE);
}
}
}
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
{
int yearSpinnerId = Resources.getSystem().getIdentifier("year", "id", "android");
if (yearSpinnerId != 0)
{
View yearSpinner = dpDate.findViewById(yearSpinnerId);
if (yearSpinner != null)
{
yearSpinner.setVisibility(View.GONE);
}
}
}
我在这里找到了上述问题的解决方案： Custom Date Picker Dialog in Android Lollipop
我想确保它易于搜索，以便其他人可以从中受益，所以我创建了这个新帖子。 （解决方案花了我几个小时才找到并理解，所以我希望能帮助这个人。）
我测试了这个并且它完美无缺。实际上，如果你先把Lollipop的解决方案放在那里，那么在代码中，把解决方案放在Kitkat上，然后它兼容两个版本而不会产生干扰。 （确保使用try / catch;）
编辑7.22.2015： 我认为很明显，如果一个人正在使用DatePicker，它需要初始化。我包含了代码，表明在运行其余代码之前需要初始化DatePicker（在这两种情况下），否则您的Views将抛出NullPointerException。这包括yearSpinner抛出null。此外，您应该至少有一个日期视图，不要隐藏所有3个视图，即不要同时隐藏日，月和年。
答案 0 :(得分：16)
对于懒惰的骨头，这个完全集成的代码（任何SDK）正在为我构建一个月选择器（90％等于@Brandon建议）：
public void initMonthPicker(){
dp_mes = (DatePicker) findViewById(R.id.dp_mes);
int year = dp_mes.getYear();
int month = dp_mes.getMonth();
int day = dp_mes.getDayOfMonth();
dp_mes.init(year, month, day, new DatePicker.OnDateChangedListener() {
@Override
public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
month_i = monthOfYear + 1;
Log.e("selected month:", Integer.toString(month_i));
//Add whatever you need to handle Date changes
}
});
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
int daySpinnerId = Resources.getSystem().getIdentifier("day", "id", "android");
if (daySpinnerId != 0)
{
View daySpinner = dp_mes.findViewById(daySpinnerId);
if (daySpinner != null)
{
daySpinner.setVisibility(View.GONE);
}
}
int monthSpinnerId = Resources.getSystem().getIdentifier("month", "id", "android");
if (monthSpinnerId != 0)
{
View monthSpinner = dp_mes.findViewById(monthSpinnerId);
if (monthSpinner != null)
{
monthSpinner.setVisibility(View.VISIBLE);
}
}
int yearSpinnerId = Resources.getSystem().getIdentifier("year", "id", "android");
if (yearSpinnerId != 0)
{
View yearSpinner = dp_mes.findViewById(yearSpinnerId);
if (yearSpinner != null)
{
yearSpinner.setVisibility(View.GONE);
}
}
} else { //Older SDK versions
Field f[] = dp_mes.getClass().getDeclaredFields();
for (Field field : f)
{
if(field.getName().equals("mDayPicker") || field.getName().equals("mDaySpinner"))
{
field.setAccessible(true);
Object dayPicker = null;
try {
dayPicker = field.get(dp_mes);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
((View) dayPicker).setVisibility(View.GONE);
}
if(field.getName().equals("mMonthPicker") || field.getName().equals("mMonthSpinner"))
{
field.setAccessible(true);
Object monthPicker = null;
try {
monthPicker = field.get(dp_mes);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
((View) monthPicker).setVisibility(View.VISIBLE);
}
if(field.getName().equals("mYearPicker") || field.getName().equals("mYearSpinner"))
{
field.setAccessible(true);
Object yearPicker = null;
try {
yearPicker = field.get(dp_mes);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
((View) yearPicker).setVisibility(View.GONE);
}
}
}
}
答案 1 :(得分：15)
非常简单，但不直观。
首先从DialogPicker
new DatePickerDialog(getActivity(),android.R.style.Theme_Holo_Dialog, this, year,month, day);
现在，是的，你可以隐藏任何微调器。
dialog.getDatePicker().findViewById(getResources().getIdentifier("day","id","android")).setVisibility(View.GONE);
在5.0.2 API 21中为我工作正常
答案 2 :(得分：1)
它有5和6+的不同ID。我已经处理了以下代码。
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
int yearSpinnerId = Resources.getSystem().getIdentifier("date_picker_year", "id", "android");
if (yearSpinnerId != 0)
{
View yearSpinner = datePicker.findViewById(yearSpinnerId);
if (yearSpinner != null)
yearSpinner.setVisibility(View.GONE);
}
}
if(android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
int yearSpinnerId = Resources.getSystem().getIdentifier("date_picker_header_year", "id", "android");
if (yearSpinnerId != 0)
{
View yearSpinner = datePicker.findViewById(yearSpinnerId);
if (yearSpinner != null)
yearSpinner.setVisibility(View.GONE);
}
}