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我遵循從各種來源獲取列表視圖的所有步驟，但我的一個 似乎沒有顯示任何內容。這個列表視圖代碼（如下所示）被一個標籤片段管理器激活，我不會把它放在這裏，因爲在這裏已經有很多東西了，所以不會把代碼全部弄糟。這很可能是ListFragment本身的問題，但我想它可能是適配器。Android ListView只顯示任何東西，但不會崩潰
發生什麼事什麼都不顯示，只是我已經放在主xml佈局的searchview。我可以在沒有崩潰的標籤之間自由切換，但在我的任何列表視圖中都沒有任何顯示。我有另一個列表，這是一個朋友列表（不包括在此代碼片段中），並使用通用的視圖持有者接口，而且一個不起作用，這表明問題很可能在我的ListFragment中，但我無法找到它。任何幫助表示讚賞，我希望有人能從中學到一些東西，謝謝。
這是我的適配器的設置類別列表
package codeblox.com.listfragmentexample;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.ToggleButton;
import java.util.ArrayList;
import codblox.com.listfragmentexample.R;
public class SettingsAdapter extends ArrayAdapter<Settings.SettingsCategories>
{
private final Activity context;
String[] text;
ArrayList<Settings.SettingsCategories> itemsCopy;
class ViewHolder
{
public TextView txt;
public CheckBox state;
public ImageView settingImg;
public EditText input;
public ToggleButton toggle;
public Button settingInfo; // click it to show what the setting does
}
public SettingsAdapter(Context context, ArrayList<Settings.SettingsCategories> items)
{
super(context, R.layout.settings_category_row, items);
this.context = (Activity) context;
this.itemsCopy = items;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
ViewHolder holder = new ViewHolder();
int viewType = this.getItemViewType(position);
if(convertView == null)
{
// inflate the GridView item layout
LayoutInflater inflater = LayoutInflater.from(getContext());
convertView = inflater.inflate(R.layout.settings_category_row, parent, false);
// initialize the view holder
holder = new ViewHolder();
holder.settingImg = (ImageView) convertView.findViewById(R.id.settingCategoryImg);
holder.txt = (TextView) convertView.findViewById(R.id.settingCategoryName);
convertView.setTag(holder);
} else {
// recycle the already inflated view
holder = (ViewHolder) convertView.getTag();
}
// fill data
holder = (ViewHolder) convertView.getTag();
String s = getItem(position).toString();
holder.txt.setText(itemsCopy.get(position).getSettingText());
holder.settingImg.setImageResource(itemsCopy.get(position).getImgResId());
return convertView;
}
}
這是我的名單片段
package codeblox.com.listfragmentexample
import android.content.res.Resources;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.util.ArrayList;
import codeblox.com.listfragmentexample.R;
public class Settings extends ListFragment implements View.OnLongClickListener
{
private ListView settingsList;
private ArrayList<SettingsCategories> mItems;
private ArrayAdapter<SettingsCategories> settingsAdapter;
private int numCategories;
String[] CategoryArray = new String[] {"Privacy and Security","Account","Networks","Camera Options","Storage","Accesibility","Features"};
int[] resIds = new int[] {R.drawable.security_settings_icon,R.drawable.account_settings_icon,
R.drawable.network_settings_icon,R.drawable.camera_settings_icon,R.drawable.storage_settings_icon,
R.drawable.accessibility_settings_icon,R.drawable.feature_settings_icon,};
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
View settingsView = inflater.inflate(R.layout.settings, container, false);
settingsList = (ListView)settingsView.findViewById(android.R.id.list);
// initialize the items list
return settingsView;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState)
{
super.onViewCreated(view, savedInstanceState);
// remove the dividers from the ListView of the ListFragment
settingsList = getListView();
settingsList.setDivider(null);
mItems = new ArrayList<SettingsCategories>();
Resources resources = getResources();
for(int c = 0; c < numCategories; c++)
{
mItems.add(new SettingsCategories(CategoryArray[c],resIds[c]));
}
// initialize and set the list adapter
// settingsAdapter = new SettingsAdapter(this.getActivity(), mItems);
setListAdapter(new SettingsAdapter(getActivity(), mItems));
settingsList.setAdapter(settingsAdapter);
}
public Settings()
{
this.numCategories = CategoryArray.length;
}
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
}
@Override
public boolean onLongClick(View v)
{
return false;
}
@Override
public void onListItemClick(ListView l, View v, int position, long id)
{
Object i = l.getItemAtPosition(position);
}
public class SettingsCategories
{
private String settingText;
private int imgResId;
SettingsCategories(String settingText,int imgResId)
{
this.settingText = settingText;
this.imgResId = imgResId;
}
public String getSettingText()
{
return this.settingText;
}
public int getImgResId()
{
return this.imgResId;
}
}
}
最後這些都是我的XML佈局（第一個是主視圖和第二一個是列表中單個項目的視圖
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<SearchView
android:id="@+id/searchFunction"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
</SearchView>
<ListView
android:id="@android:id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</ListView>
</RelativeLayout>
這表示單個項目在列表中
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<ImageView
android:layout_width="52dp"
android:layout_height="52dp"
android:id="@+id/settingCategoryImg"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="52dp"
android:text=""
android:id="@+id/settingCategoryName"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/settingCategoryImg"
/>
</RelativeLayout>
刪除'settingsList = getListView（）;'我想你初始化您的問題就解決了，在'onCreateView'，在'onViewCreated'中檢查'numCategories'， –
將Log記錄在一步。可能你會發現愚蠢的錯誤。 –
是否已經解決。 –