Question

我的第一个问题，如果出现问题就很抱歉。

我在显示自定义列表视图方面遇到问题，我尝试在此处执行类似操作：http://www.learn2crack.com/2013/10/android-custom-listview-images-text-example.html

首先，在MainActivity中我使用的是ViewFlipper，但我认为这并不重要。

    vieFli = (ViewFlipper) findViewById(R.id.viewFlipper);
    vieFli.setHorizontalScrollBarEnabled(true);

    View vie2 = View.inflate(this, R.layout.activity_friends, null);
    vieFli.addView(vie2);

这是activity_friends.xml：

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".FriendsActivity">

<Button
    android:id="@+id/add_friend_button"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Add friend" />

<ListView
    android:id="@+id/list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@id/add_friend_button"></ListView>
</RelativeLayout>

这是FriendList.java（只是适配器）：

public class FriendList extends ArrayAdapter<String> {
private final Activity context;
private final String[] friendName;
private final Integer[] imageId;

public FriendList(Activity context, String[] friendName, Integer[] imageId) {
    super(context, R.layout.one_row, friendName);
    this.context = context;
    this.friendName = friendName;
    this.imageId = imageId;
}

@Override
public View getView(int position, View view, ViewGroup parent) {
    LayoutInflater inflater = context.getLayoutInflater();
    View rowView = inflater.inflate(R.layout.one_row, null, true);
    TextView txtTitle = (TextView) rowView.findViewById(R.id.txt);
    ImageView imageView = (ImageView) rowView.findViewById(R.id.img);
    txtTitle.setText(friendName[position]);
    imageView.setImageResource(imageId[position]);
    //txtTitle.setVisibility(View.VISIBLE);
    //imageView.setVisibility(View.VISIBLE);
    return rowView;
}

@Override
public int getCount() {
    return friendName.length;
}

@Override
public String getItem(int arg0) {
    return friendName[arg0];
}

@Override
public long getItemId(int arg0) {
    return arg0;
}
}

接下来我想告诉你的是one_row.xml（我想如何在ListView中表示一行）：

<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TableRow>
    <ImageView
        android:id="@+id/img"
        android:layout_width="50dp"
        android:layout_height="50dp"/>
    <TextView
        android:id="@+id/txt"
        android:layout_width="wrap_content"
        android:layout_height="50dp" />
</TableRow>
</TableLayout>

在ViewFlipper中加载的FriendsActivity：

public class FriendsActivity extends ActionBarActivity {

ListView list;
String[] friendName = {
        "Michael",
        "James"
};
Integer[] imageId = {
        R.drawable.image1,
        R.drawable.image2
};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_friends);

    FriendList adapter = new FriendList(this, friendName, imageId);
    list = (ListView) findViewById(R.id.list);
    list.setAdapter(adapter);
    adapter.notifyDataSetChanged();
    list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                                int position, long id) {
            //  Toast.makeText(FriendsActivity.this, "You Clicked at " +web[+ position], Toast.LENGTH_SHORT).show();
        }
    });
}
...

这只是我在帖子开头链接的教程的副本，它对我不起作用。你能告诉我问题出在哪里吗？当我读到其他一些问题时，我看到了xml布局的问题，但在我的内容中找不到它。

提前感谢您的帮助。

Answer 1

尝试更改getView(...)

中的行

View rowView = inflater.inflate(R.layout.one_row, null, true);

是：

View rowView = inflater.inflate(R.layout.one_row, parent, false);

Android自定义列表视图 - 无法显示

1 个答案: