我在组件上有片段单击弹出窗口DialogFragment.该对话框片段包含选项列表.当选择列表中的选项时,我想通知片段,以便我可以运行字段更新过程.
我做了这样的事
我做了这样的事
@Override
public void onClick(DialogInterface dialog,int item) {
updateSharedPreference(item);
Log.e("ProfilePersonaListDialog","Click on dialog,inside onClick");
OnCloseListDialogListener act = (OnCloseListDialogListener) getActivity();
act.onDialogListSelection();
dismiss();
}
但是这个getActivity()调用FragmentActivity而不是调用触发对话框片段的片段.
我可以杀死当前打开/运行的片段并调用一个可以获得更新字段的新实例,但这是我希望避免的脏解决方案.
有什么建议如何在对话框片段中选择片段一次更新选项？
解决方法
刚刚回来解决方案.我的问题实际上是转发当前片段getTag()字符串作为DialogFragment的show()参数.如果有兴趣在这里工作样品.
创建简单的侦听器
public interface OnCloseListDialogListener {
public void onDialogListSelection();
}
创建将扩展DialogFragment的新对话框
public class ListDialogFragment extends DialogFragment implements DialogInterface.OnClickListener {
private PersonaData[] mPersonaData;
private String[] mPersonaName;
private final String TAG;
public static ListDialogFragment newInstance(PersonaData[] personaData,String tag) {
ListDialogFragment dialog = new ListDialogFragment(personaData,tag);
Bundle bundle = new Bundle();
dialog.setArguments(bundle);
return dialog;
}
private ListDialogFragment(PersonaData[] personaData,String tag) {
this.mPersonaData = personaData.clone();
this.TAG = tag;
}
@Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
setCancelable(true);
int style = DialogFragment.STYLE_NORMAL,theme = 0;
setStyle(style,theme);
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(R.string.dialog_title);
mPersonaName = getData();//Your own implementation here
builder.setNegativeButton("Cancel",this);
builder.setSingleChoiceItems(mPersonaName,-1,new SingleChoiceListener());
return builder.create();
}
@Override
public void onClick(DialogInterface dialogInterface,int i) {
}
private class SingleChoiceListener implements DialogInterface.OnClickListener {
@Override
public void onClick(DialogInterface dialog,int item) {
updateSharedPreference(item);
OnCloseListDialogListener act = (OnCloseListDialogListener) getFragmentManager().findFragmentByTag(TAG);
act.onDialogListSelection();
dismiss();
}
}
}
然后在你想要调用此对话框的片段中,如下所示. DIALOG只是String常量我把它放在那里只是对话框
SOME_CLICKABLE.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
FragmentManager manager = getFragmentManager();
ListDialogFragment dialog = ListDialogFragment.newInstance(mPersona,getTag());
dialog.show(manager,DIALOG);
}
});
