Question

我一直在寻找将expandablelistview添加到片段的方法，我已经阅读了文档，但仍然对如何做到这一点感到困惑。所以我有两个问题：

有没有办法可以将这个：http://www.androidhive.info/2013/07/android-expandable-list-view-tutorial/变成片段？

在下面给出的代码中，我尝试将android:groupIndicator的指标添加到expandablelistview，但它没有显示。这是代码，有没有办法直接添加指标？

 public class Services extends SherlockFragment {

@Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle    savedInstanceState) {
View v = inflater.inflate(R.layout.services_layout, null);
ExpandableListView elv = (ExpandableListView) v.findViewById(R.id.list);
elv.setAdapter(new SavedTabsListAdapter());
return v;
}

public class SavedTabsListAdapter extends BaseExpandableListAdapter {

private String[] groups = { "Class 13", "Class 12", "Class 11", "Class 10", "Class 9" };

private String[][] children = {
    { "Blue", "Green" },
    { "Orange", "Purple", "Black" },
    { "White", "Brown" },
    { "Golden", "Silver", "Red" },
    { "Pink", "Gray", "Yellow" }
};

@Override
public int getGroupCount() {
    return groups.length;
}

@Override
public int getChildrenCount(int i) {
    return children[i].length;
}

@Override
public Object getGroup(int i) {
    return groups[i];
}

@Override
public Object getChild(int i, int i1) {
    return children[i][i1];
}

@Override
public long getGroupId(int i) {
    return i;
}

@Override
public long getChildId(int i, int i1) {
    return i1;
}

@Override
public boolean hasStableIds() {
    return true;
}

@Override
public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {
    TextView textView = new TextView(Services.this.getActivity());
    textView.setText(getGroup(i).toString());
    textView.setBackgroundColor(0xFF3F9FE0);
    return textView;
}

@Override
public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {
    TextView textView = new TextView(Services.this.getActivity());
    textView.setText(getChild(i, i1).toString());
    return textView;
}

@Override
public boolean isChildSelectable(int i, int i1) {
    return true;
}

} }

Answer 1

您可以使用类似下面的内容。为我工作：

Picasso.with(activityContext).load(thumbnailurl)
                .into(imageViewReference);

Answer 2

这里没问题，您可以采用与活动相同的方式执行此操作，当您需要上下文时，只需使用getActivity()。
在xml代码android:groupIndicator="@drawable/indicator_pic"中或以编程方式expanadableListView.setGroupIndicator(R.drawable.your_pic);。类似的东西是here。随意问我。

Answer 3

您可能需要查看the example source code。该类使用您在片段内讨论的功能。

将expandableListView示例转换为片段

3 个答案: