我试图从 ListView 中获取 NetworkImageView 的图像路径,但它返回 null。在我的 MainActivity.java
中,我使用以下内容:
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// get the title
String _movieTitle = ((TextView) view.findViewById(R.id.title)).getText().toString();
// send the title
myIntent.putExtra("title", _movieTitle) ;
// get the image path
NetworkImageView v = (NetworkImageView) view.findViewById(R.id.thumbnail);
String imgUrl = (String) v.getTag();
....
// just for testing (works fine)
System.out.print("title is " + _movieTitle);
// image path is (returns null)
System.out.print("Image path is " + imgUrl);
}
}
adapter.java
内容如下:
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.list_row, null);
if (imageLoader == null)
imageLoader = AppController.getInstance().getImageLoader();
NetworkImageView thumbNail = (NetworkImageView) convertView.findViewById(R.id.thumbnail);
TextView title = (TextView) convertView.findViewById(R.id.title);
....
// getting movie data for the row
Movie m = movieItems.get(position);
// thumbnail image
thumbNail.setImageUrl(m.getThumbnailUrl(), imageLoader);
// title
title.setText(m.getTitle());
list.xml
的内容:
<!-- Thumbnail Image -->
<com.android.volley.toolbox.NetworkImageView
android:id="@+id/thumbnail"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_alignParentLeft="true"
android:layout_marginRight="8dp" />
<!-- Movie Title -->
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/thumbnail"
android:layout_toRightOf="@+id/thumbnail"
android:textSize="@dimen/title"
android:textStyle="bold" />
不确定为什么MainActivity.java
中返回的图像路径为空。有人可以看一下这个并看看我做错了什么吗?
最佳答案
为什么要做太多不必要的事情?只需执行 String imageUrl = NetworkImageView.getImageURL();
关于java - 访问 NetworkImageView 的图像路径,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31468084/