我终于开始实施 NathanZ 解决方案的一个版本。似乎没有太多关于将 contextMenu 转换为 DialogFragment 的内容，所以我将在此处粘贴大部分解决方案。
实现 onLongItemClick 侦听器还意味着我能够在列表视图中进行不需要菜单的长按事件。不幸的是，因为您不能将菜单传递给对话框，所以我不得不重用现有的 ListViewElement 类型来存储列表视图中每个“菜单”项的 id 和文本字符串。
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int item, long position) {
Playable playable = (Playable) view.getTag(R.id.playable);
//Switch haptic feedback off by default so if we don't handle the long click we don't vibrate
parent.setHapticFeedbackEnabled(false);
if (playable == null) {
// This must be a message bar so the only option is to update all saved content
updateAll();
parent.setHapticFeedbackEnabled(true);
} else {
if (!(playable instanceof AutoRadioStation) && !(playable.getId().equals(Playlist.AUTOMATIC_PLAYLIST))) {
Drawable drawable = (Drawable) ((ImageView) view.findViewById(R.id.artwork)).getDrawable().getConstantState().newDrawable();
showContextDialog(playable, drawable);
parent.setHapticFeedbackEnabled(true);
}
}
return true;
}
private void showContextDialog(Playable playable, Drawable drawable) {
FragmentManager fm = getActivity().getSupportFragmentManager();
final List<ListViewElement> array = new ArrayList<ListViewElement>();
array.add(new ListViewElement(R.id.menu_share, null, getString(R.string.share), true));
array.add(new ListViewElement(R.id.menu_delete, null, getString(R.string.delete), true));
ContextMenuDialog dialog = new ContextMenuDialog(drawable, playable.getName(), array, playable);
dialog.setOnItemClickListener(this);
dialog.show(fm, "Context Menu");
}
//Callback from the ContextMenuDialog class
@Override
public void onItemClickDialogFragment(int option, Playable playable) {
switch (option) {
case R.id.menu_delete :
// Perform delete actions
break;
case R.id.menu_share :
// Perform share actions
break;
}
}
public class ContextMenuDialog extends DialogFragment implements OnItemClickListener {
private Drawable drawableIcon;
private String title;
private List<ListViewElement> values;
private Playable playable;
private DialogFragmentOnItemClickListener listener;
public interface DialogFragmentOnItemClickListener {
void onItemClickDialogFragment(int option, Playable playable);
}
public void setOnItemClickListener(DialogFragmentOnItemClickListener listener) {
this.listener = listener;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Create the dialog without a title since the layout includes a customized title
setStyle(DialogFragment.STYLE_NO_TITLE, R.style.MyDialogStyle);
}
public ContextMenuDialog(Drawable drawableIcon, String title, List<ListViewElement> values, Playable playable) {
this.drawableIcon = drawableIcon;
this.title = title;
this.values = values;
this.playable = playable;
}
public ContextMenuDialog(int drawableResource, String title, List<ListViewElement> values, Playable playable) {
this.drawableIcon = getResources().getDrawable(drawableResource);
this.title = title;
this.values = values;
this.playable = playable;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.context_menu, container, true);
TextView titleView = (TextView) view.findViewById(R.id.context_menu_title);
titleView.setText(title);
ImageView icon = (ImageView) view.findViewById(R.id.context_menu_artwork);
icon.setImageDrawable(drawableIcon);
ListView listView = (ListView) view.findViewById(R.id.context_menu_listview);
ContextMenuAdapter adapter = new ContextMenuAdapter(getActivity(), R.layout.context_menu_list_item, values);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
return view;
}