我正在动态创建Imageviews并显示它。但是我在滚动时遇到重新加载的问题,所以我决定使用NetworkImageView,但是在这里我无法设置位图。它没有显示任何错误,但是没有显示任何图像。
在我的代码下面...
final NetworkImageView imageView = new NetworkImageView(context);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(150,
200);
params.weight = 1;
//imageView.setImageBitmap(null);
imageView.setLayoutParams(params);
imageView.setMaxHeight(200);
imageView.setMaxWidth(150);
// bitmap =//
// BitmapFactory.decodeResource(context.getResources(),R.drawable.ic_menu_folder);
// Log.i("Bitmaps Counts", String.valueOf(pos));
/* comment all this...
new Thread() {
public void run() {
bitmap = downloadImage(tempValues.getItemAbsolutePath());
((Activity) context).runOnUiThread(new Runnable() {
@Override
public void run() {
imageView.setImageBitmap(bitmap);
}
});
}
}.start();*/
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
ImageLoader mImageLoader = new ImageLoader(requestQueue,new LruBitmapCache(1000000));
mImageLoader.get(tempValues.getItemAbsolutePath(),
ImageLoader.getImageListener(imageView,
R.android.defaultimg,
R.android.errorimg));
layout.addView(imageView);
downloadImage代码..
/* unused method
private Bitmap downloadImage(String url) {
Bitmap bitmap = null;
InputStream stream = null;
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inSampleSize = 1;
try {
stream = getHttpConnection(url);
bitmap = BitmapFactory.decodeStream(stream, null, bmOptions);
stream.close();
} catch (IOException e1) {
e1.printStackTrace();
}
return bitmap;
}
private InputStream getHttpConnection(String urlString) throws IOException {
InputStream stream = null;
URL url = new URL(urlString);
URLConnection connection = url.openConnection();
try {
HttpURLConnection httpConnection = (HttpURLConnection) connection;
httpConnection.setRequestMethod("GET");
httpConnection.connect();
if (httpConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
stream = httpConnection.getInputStream();
}
} catch (Exception ex) {
ex.printStackTrace();
}
return stream;
}*/
错误日志
05-12 19:11:13.971:E / AndroidRuntime(11177):致命异常:Thread-7325
05-12 19:11:13.971:E / AndroidRuntime(11177):进程:com.dar.app,PID:11177
05-12 19:11:13.971:E / AndroidRuntime(11177):java.lang.NegativeArraySizeException:-350
05-12 19:11:13.971:E / AndroidRuntime(11177):位于com.android.volley.toolbox.DiskBasedCache.streamToBytes(DiskBasedCache.java:316)
05-12 19:11:13.971:E / AndroidRuntime(11177):位于com.android.volley.toolbox.DiskBasedCache.get(DiskBasedCache.java:117)
05-12 19:11:13.971:E / AndroidRuntime(11177):位于com.android.volley.CacheDispatcher.run(CacheDispatcher.java:100)
最佳答案
您可以使用凌空图像下投
容易
默认img已设置...图像的加载器请求..
如果使用url找到图像,它将设置..或如果错误将设置错误图像..这样,您将在加载img时告知错误
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
ImageLoader mImageLoader = new ImageLoader(requestQueue,new LruBitmapCache(1000000));
mImageLoader.get(<img-url>,
ImageLoader.getImageListener(<imageview-object>,
R.drawable.defaultimg,
R.drawable.errorimg));
关于android - 将位图设置为NetworkImageView,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/30190823/