我正在用户可以选择的应用上创建“频道”列表。我希望它们在网格视图中，（有点像可点击的瓷砖）。在此片段上应该有两个单独的网格 - 默认频道（channelListSupplied）以及用户必须请求订阅（channelListEarned）的网格。
我使用了一个自定义适配器，我从另一个答案得到了SO，但我不能让它工作，因为它在片段中而不是在Activity中，我确定有一些参考我不是正确传递。
下面列出了Java和XML的相关部分......
FragmentChannels.java :(片段到MainActivity.java）
public class FragmentChannels extends Fragment implements FragmentManager.OnBackStackChangedListener {
ViewGroup container;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
...
final JSONObject channelList = data.getJSONObject("channels");
final JSONArray channelListSupplied = channelList.getJSONArray("supplied");
final JSONArray channelListEarned = channelList.getJSONArray("earned");
GridView channelViewSupplied = (GridView) view.findViewById(R.id.channel_grid_supplied);
GridView channelViewEarned = (GridView) view.findViewById(R.id.channel_grid_earned);
if (Session.getSessionVar("canHasSpecial").equals("1")) {
FragmentChannels.this.createGridView(channelViewEarned, channelListEarned, FragmentChannels.this.container);
}
FragmentChannels.this.createGridView(channelViewSupplied, channelListSupplied, FragmentChannels.this.container);
...
return view;
}
public void createGridView(final GridView gridView, JSONArray list, final ViewGroup container) throws JSONException {
final String[] gridList = new String[list.length()];
final Activity activity = getActivity();
for (int i = 0; i < list.length(); i++) {
JSONObject channelData = (JSONObject) list.get(i);
gridList[i] = channelData.getString("source_name");
}
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
gridView.setAdapter(new GridViewAdapter(activity, gridList, container));
}
});
}
public boolean createChannelMenu(Menu menu) {
MenuInflater inflater = this.getActivity().getMenuInflater();
inflater.inflate(R.menu.menu_channels, menu);
super.onCreateOptionsMenu(menu, inflater);
return true;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
final Activity activity = getActivity();
}
@Override
public void onBackStackChanged() {
}
}
GridViewAdapter.java：
public class GridViewAdapter extends BaseAdapter {
private Context context;
private final String[] textViewValues;
private ViewGroup container;
public GridViewAdapter(Context context, String[] textViewValues, ViewGroup container) {
this.context = context;
this.textViewValues = textViewValues;
this.container = container;
}
@Override
public int getCount() {
return this.textViewValues.length;
}
@Override
public Object getItem(int position) {
return textViewValues[position];
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Log.d("CDFF", position+": "+this.textViewValues[position]);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if (convertView == null) {
gridView = inflater.inflate(R.layout.grid_item_layout, this.container);
TextView titleView = (TextView) gridView.findViewById(R.id.grid_item_title);
titleView.setText(textViewValues[position]);
}
else {
gridView = convertView;
}
return gridView;
}
}
fragment_channels.xml：
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="FragmentChannels"
android:id="@+id/fragment_channel_container"
tools:context="xx.xxx.xxxx.FragmentChannels"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:text="My Channels"
android:background="@color/peach"
android:textSize="20sp"
android:textColor="@color/midnightBlue"
android:gravity="center"
android:textAppearance="@style/TextAppearance.FontPath"
/>
<GridView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/channel_grid_earned"
android:layout_margin="5dp"
android:columnWidth="180dp"
android:drawSelectorOnTop="true"
android:gravity="center"
android:numColumns="auto_fit"
android:stretchMode="spacingWidthUniform"
android:verticalSpacing="5dp"
android:focusable="true"
android:clickable="true"/>
<GridView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/channel_grid_supplied"
android:layout_margin="5dp"
android:columnWidth="180dp"
android:drawSelectorOnTop="true"
android:gravity="center"
android:numColumns="auto_fit"
android:stretchMode="spacingWidthUniform"
android:verticalSpacing="5dp"
android:focusable="true"
android:clickable="true"/>
</LinearLayout>
</FrameLayout>
grid_item_layout.xml：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:background="@color/white"
android:orientation="vertical"
android:padding="5dp">
<ImageView
android:id="@+id/grid_item_image"
android:layout_width="150dp"
android:layout_height="100dp"
android:scaleType="centerCrop"/>
<TextView
android:id="@+id/grid_item_title"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:gravity="center"
android:maxLines="2"
android:ellipsize="marquee"
android:textSize="12sp" />
</RelativeLayout>
截至目前，除了“我的频道”TextView之外，片段上没有任何内容显示。
我非常感谢任何帮助！
答案 0 :(得分：0)
固定。
我换了一行：
gridView = inflater.inflate(R.layout.grid_item_layout, this.container);
要：
gridView = inflater.inflate(R.layout.grid_item_layout, null);
在GridViewAdapter.java班。