我在尝试永久设置 DatePickerDialog 标题时遇到问题。
DatePickerFragment.java
public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
final Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int day = c.get(Calendar.DAY_OF_MONTH);
// Create a new instance of DatePickerDialog and return it
DatePickerDialog dpd = new DatePickerDialog(getActivity(), this, year, month, day);
dpd.setTitle("set date");
return dpd;
}
public void onDateSet(DatePicker view, int year, int month, int day) {
// Do something with the date chosen by the user
}
}
MainActivity.java
public class MainActivity extends FragmentActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = (Button) findViewById(R.id.button1);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
DialogFragment newFragment = new DatePickerFragment();
newFragment.show(getSupportFragmentManager(), "datePicker");
}
});
}
}
当我单击按钮 DatePickerDialog 显示并且对话框标题是“设置日期”但是当我更改日期时,标题包含选定日期而不是“设置日期”。如何永久设置此对话框标题?
在 API 8-10 上测试。
提前谢谢你,对不起我的英语。帕特里克
最佳答案
如何扩展 DatePickerDialog
并添加一个 setPermanentTitle
方法来存储将在日期更改时强制执行的永久标题?
public class MyDatePickerDialog extends DatePickerDialog {
private CharSequence title;
public MyDatePickerDialog(Context context, OnDateSetListener callBack, int year, int monthOfYear, int dayOfMonth) {
super(context, callBack, year, monthOfYear, dayOfMonth);
}
public void setPermanentTitle(CharSequence title) {
this.title = title;
setTitle(title);
}
@Override
public void onDateChanged(DatePicker view, int year, int month, int day) {
super.onDateChanged(view, year, month, day);
setTitle(title);
}
}
然后使用新的setPermanentTitle
方法:
MyDatePickerDialog dpd = new MyDatePickerDialog(this, null, 2012, 10, 10);
dpd.setPermanentTitle("set date");
关于java - 永久设置 DatePickerDialog 标题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13123445/