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我有一个问题,当我设置特定的适配器时,试图让我的android应用程序跟踪用户输入。Android ListFragment适配器不允许用户点击
所以在我的片段类中,我有这个功能,当片段被拾取到活动中时会被拾取。
@Override
public void onListItemClick(ListView l, View v, int pos, long id) {
System.out.println("clicked");
// Indicates the selected item has been checked
getListView().setItemChecked(pos, true);
// Inform the QuoteViewerActivity that the item in position pos has been selected
mListener.onListSelection(pos);
}
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, getClass().getSimpleName() + ":entered onCreate()");
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Log.i(TAG, getClass().getSimpleName() + ":entered onCreate()");
return super.onCreateView(inflater, container, savedInstanceState);
}
public void onActivityCreated(Bundle savedState) {
Log.i(TAG, getClass().getSimpleName() + ":entered onActivityCreated()");
super.onActivityCreated(savedState);
dbHelper= new dbHelper(getActivity());
Cursor cursor = dbHelper.selectJoinDecksQuestions("jjj");
cursor.moveToFirst();
setListAdapter(new QuestionCursorAdapter(getActivity(), cursor));
}
它调用适配器并使用光标返回的数据填充屏幕到文本视图列表中。问题是这些数据都不可选。
如果我变成这个样子的数据onActivityCreated方法显示是可选:
public void onActivityCreated(Bundle savedState) {
Log.i(TAG, getClass().getSimpleName() + ":entered onActivityCreated()");
super.onActivityCreated(savedState);
Set the list adapter for the ListView
Discussed in more detail in the user interface classes lesson
setListAdapter(new ArrayAdapter<String>(getActivity(),
R.layout.question_fragment, MainContentActivity.mTitleArray));
}
问题适配器看起来像这样
public QuestionCursorAdapter(Context context, Cursor c) {
// that constructor should be used with loaders.
super(context, c, 0);
inflater = LayoutInflater.from(context);
System.out.println("leaving constructor of the questioncursoradapter");
System.out.println(getCount());
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
System.out.println("in bind view");
TextView list_item = (TextView)view.findViewById(R.id.question_in_list);
list_item.setText(cursor.getString(cursor.getColumnIndex(COLUMN_NAME_QUESTIONTEXT)));
list_item.setMovementMethod(new ScrollingMovementMethod());
int position = cursor.getPosition(); // that should be the same position
System.out.println("leaving bind view");*/
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
System.out.println("newView in QuestionCursorAdapter entered");
//question_fragment/cusoradaptertest
View v = inflater.inflate(R.layout.question_fragment, null);
System.out.println("leave newview");
return v;
}
为什么一个ArrayAdapter返回数据的任何想法,可以在我的自定义CursorAdapter没有的地方选择?
仍然在与此挣扎。我想这是一个问题,我想如何使用点击监听器。我已经覆盖片段类中的onListItemClick,但我不确定是否由于这是自定义适配器,我需要在适配器中创建一个新的适配器? – massphoenix
因此,我在适配器中设置了一个侦听器并注册了点击。我想接下来要做的事情是编写一些回调,将点击从适配器中推回主要活动。如果这是一个正确的方法来完成它,或者这应该全部在片段中设置或者如果没有真正的区别,我想要输入。 – massphoenix