我正在尝试创建类似于的简单对话框DatePickerDialog
。的Dialog
,我应该创造提供,他们可以选择像阵列的用户。
我相信我已经成功创建了数组并向其中添加了正确的图像,我现在遇到的问题是如何Dialog
显示该数组?我应该返回什么?
我已经进行了调查AlertDialogs
,但是我不确定该如何执行。
更新:已修复问题,下面显示的代码正在起作用
图像拾取器
public class PicturePickerFragment extends DialogFragment {
ArrayList<Integer> imageList = new ArrayList<Integer>();
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// fill an array with selected images
String title = "Picture";
imageList.add(R.drawable.barbershop);
imageList.add(R.drawable.wedding);
imageList.add(R.drawable.meeting);
imageList.add(R.drawable.barbershop);
// return alertdialog
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
// Inflate and set the layout for the dialog
// Pass null as the parent view because its going in the dialog layout
builder.setView(inflater.inflate(R.layout.activity_create, null))
.setTitle(R.string.event_type)
.setPositiveButton(R.string.select_picture,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
// call the method on the parent activity when
// user click the positive button
}
});
return builder.create();
}
}
以供参考
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
return new DatePickerDialog(getActivity(), this, year, month, day);
}
public void onDateSet(DatePicker view, int year, int month, int day) {
// Do something with the date chosen by the user
month++;
String dateString = month + "/" + day + "/" + year;
Button b = (Button) getActivity().findViewById(R.id.btn_date);
b.setText(dateString);
}
}
像这样使用片段
<Button
android:id="@+id/btn_picture"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginBottom="15dp"
android:layout_marginTop="15dp"
android:layout_weight="1"
android:background="@null"
android:drawablePadding="15dp"
android:onClick="showPicturePickerDialog"
android:drawableTop="@drawable/ico_picture"
android:text="Picture"
android:textColor="@color/darkbrown"
android:textSize="20sp" />
如果要在其中打开DialogFragment
扩展的活动FragmentActivity
,则应执行:
PicturePickerFragment dialog = new PicturePickerFragment();
dialog.show(getSupportFragmentManager(), "YourDialog");
另外,您还需要在onCreateDialog
对话框片段类的方法中增加对话框布局文件。
使用AlertDialog.Builder
您可以轻松实现所有这些目标,例如
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
// Inflate and set the layout for the dialog
// Pass null as the parent view because its going in the dialog layout
builder.setView(inflater.inflate(R.layout.dialoglayout, null))
.setTitle(R.string.dialog_title)
.setPositiveButton(R.string.pos_button, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// call the method on the parent activity when user click the positive button
}
})
.setNegativeButton(R.string.neg_button, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// call the method on the parent activity when user click the negative button
}
});
return builder.create();
http://developer.android.com/reference/android/app/DialogFragment.html上有很多示例
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