Question

我创建了一个Android应用程序，我希望在ListView中垂直显示一些图像数据。

如何使它成为可能？

我尝试使用此代码 -

<LinearLayout
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="360dp"
    android:layout_above="@+id/relativeLayout2"
    android:layout_below="@+id/relativeLayout1"
    android:gravity="center"
    android:orientation="vertical" >

    <ListView
        android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="left|top"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:layout_marginTop="15dp"
        app:layout_gravity="fill_vertical"
        android:entries="@array/country_image_list" >
    </ListView>
</LinearLayout>

Answer 1

public class ItemImagesAdapter extends BaseAdapter {

private Context context;
private ArrayList<String> paths;
private ImageLoader iml;

public ItemImagesAdapter(FragmentActivity activity, ArrayList<String> image_paths) {
    context = activity;
    paths = image_paths;
    ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(activity).build();
    ImageLoader.getInstance().init(config);
    iml = ImageLoader.getInstance();
}

@Override
public int getCount() {
    return paths.size();
}

@Override
public Object getItem(int position) {
    return paths.get(position);
}

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = LayoutInflater.from(context);
    if (convertView == null) {
        convertView = inflater.inflate(R.layout.list_item_image, parent, false);
    }
    String path = paths.get(position);
    ImageView image = (ImageView) convertView.findViewById(R.id.image1);
    iml.displayImage(path, image);
    return convertView;
}

}

为列表项添加一个布局作为R.layout.list_item_image。这里我正在使用图像加载程序从服务器加载图像。如果您通过本地获取图像...然后直接设置它们

希望这可以帮助你

Answer 2

您可以尝试使用TwoWayView管理您的需求，以使用垂直滚动对ListView项进行水平滚动。你可以在github上同样检查this演示。

Answer 3

首次活动的XML

<LinearLayout 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=".FirstActivity" 
android:orientation="vertical">

<ListView 
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"></ListView>

</LinearLayout>

行布局的XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
 >


    <ImageView 
    android:id="@+id/myImage"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"

    />


</LinearLayout>

创建此布局，然后使用自定义适配器类，您可以在图像视图中填充每行的图像...像这样的东西

自定义适配器类

public class customAdapter extends BaseAdapter {

ArrayList<HashMap<String, String>> al = new ArrayList<HashMap<String,String>>();
Activity activity;
private static LayoutInflater inflater = null;

public customAdapter(Activity a, ArrayList<HashMap<String, String>> al) {
    Log.e("check", "");
    activity = a;
    this.al = al;
    inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

@Override
public int getCount() {
    // TODO Auto-generated method stub
     return al.size();
}

@Override
public Object getItem(int position) {
    // TODO Auto-generated method stub
    return position;
}

@Override
public long getItemId(int position) {
    // TODO Auto-generated method stub
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

            imageLoader=new ImageLoader(activity.getApplicationContext());
    View vi=convertView;
    if(convertView==null)
    {
    vi = inflater.inflate(R.layout.row_layout, null);
    }
    ImageView myImage = (ImageView) vi.findViewById(R.id.myImage);

    imageLoader.DisplayImage(//your image from resource here),myImage);
    return vi;
}

}

你遇到的任何问题都可以按照我在评论中提到的教程的链接...

在ListView中垂直显示数据

3 个答案: