获取数据后，我的应用程序尝试通过调用自定义适配器来扩充ListView中的数据。在充气时显示以下错误。
02-21 11:14:39.156: E/AndroidRuntime(499): java.lang.NoClassDefFoundError: com.daedalus.sarkarinaukriblog.CustomAdapter$1
02-21 11:14:39.156: E/AndroidRuntime(499): at com.daedalus.sarkarinaukriblog.CustomAdapter.<init>(CustomAdapter.java:42)
02-21 11:14:39.156: E/AndroidRuntime(499): at com.daedalus.sarkarinaukriblog.ListActivity$DownloadFeeds.onPostExecute(ListActivity.java:176)
02-21 11:14:39.156: E/AndroidRuntime(499): at com.daedalus.sarkarinaukriblog.ListActivity$DownloadFeeds.onPostExecute(ListActivity.java:1)
02-21 11:14:39.156: E/AndroidRuntime(499): at android.os.AsyncTask.finish(AsyncTask.java:417)
02-21 11:14:39.156: E/AndroidRuntime(499): at android.os.AsyncTask.access$300(AsyncTask.java:127)
02-21 11:14:39.156: E/AndroidRuntime(499): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
02-21 11:14:39.156: E/AndroidRuntime(499): at android.os.Handler.dispatchMessage(Handler.java:99)
02-21 11:14:39.156: E/AndroidRuntime(499): at android.os.Looper.loop(Looper.java:123)
02-21 11:14:39.156: E/AndroidRuntime(499): at android.app.ActivityThread.main(ActivityThread.java:3683)
02-21 11:14:39.156: E/AndroidRuntime(499): at java.lang.reflect.Method.invokeNative(Native Method)
02-21 11:14:39.156: E/AndroidRuntime(499): at java.lang.reflect.Method.invoke(Method.java:507)
02-21 11:14:39.156: E/AndroidRuntime(499): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-21 11:14:39.156: E/AndroidRuntime(499): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-21 11:14:39.156: E/AndroidRuntime(499): at dalvik.system.NativeStart.main(Native Method)
我的帖子执行代码：
protected void onPostExecute(Boolean result) {
// TODO Auto-generated method stub
//super.onPostExecute(result);
try {
if(result) {
adapterCust = new CustomAdapter(ListActivity.this, values);
listView1.setAdapter(adapterCust);
progress.dismiss();
} else {
progress.dismiss();
Toast.makeText(ListActivity.this, "Error in fetching data", Toast.LENGTH_SHORT).show();
}
} catch(Exception e) {
Toast.makeText(ListActivity.this, "Error in fetching data", Toast.LENGTH_SHORT).show();
}
}
我的工作适配器：
public class CustomAdapter extends BaseAdapter{
Context context;
int layoutResourceId;
List<Map<String, String>> data = null;
WeatherHolder holder = null;
LruCache<String, Bitmap> mMemoryCache;
public CustomAdapter(Context context, List<Map<String, String>> data) {
this.data = data;
this.context = context;
int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
// Use 1/8th of the available memory for this memory cache.
int cacheSize = maxMemory / 8;
mMemoryCache = new LruCache<String, Bitmap>(cacheSize){
};
}
public void addBitmapToMemoryCache(String key, Bitmap bitmap) {
if (getBitmapFromMemCache(key) == null) {
mMemoryCache.put(key, bitmap);
}
}
public Bitmap getBitmapFromMemCache(String key) {
return mMemoryCache.get(key);
}
@Override
public View getView(int position, View convertView, ViewGroup parent){
View row = convertView;
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.listview_row, null);
holder = new WeatherHolder();
holder.imgIcon = (ImageView)row.findViewById(R.id.imgIcon);
holder.txtTitle = (TextView)row.findViewById(R.id.txtTitle);
holder.txtPubDate = (TextView)row.findViewById(R.id.txtPubDate);
holder.imgNext = (ImageView)row.findViewById(R.id.nextImg);
row.setTag(holder);
holder.txtTitle.setText(getTitle(position));
holder.txtPubDate.setText("Published Date : " + getPubDate(position));
holder.imgNext.setColorFilter(Color.BLACK);
Bitmap bm = getBitmapFromMemCache(String.valueOf(position));
if( bm != null){
holder.imgIcon.setImageBitmap(bm);
}else {
BitmapWorkerTask task = new BitmapWorkerTask(holder.imgIcon, position);
task.execute(getUrl(position));
}
return row;
}
static class WeatherHolder
{
ImageView imgIcon;
TextView txtTitle;
TextView txtPubDate;
ImageView imgNext;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return data.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return data.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public String getTitle(int position) {
Map<String, String> record = data.get(position);
String title = record.get("title");
return title;
}
public String getPubDate(int position) {
Map<String, String> record = data.get(position);
String pubdate = record.get("pubdate");
return pubdate;
}
public String getDescription(int position) {
Map<String, String> record = data.get(position);
String description = record.get("description");
return description;
}
public String getUrl(int position) {
Map<String, String> record = data.get(position);
String url = record.get("url");
return url;
}
public String getactualUrl(int position) {
Map<String, String> record = data.get(position);
String acturl = record.get("actualURL");
return acturl;
}
private class BitmapWorkerTask extends AsyncTask<String, Void, Bitmap> {
private final WeakReference<ImageView> imageViewReference;
private String url = null;
private String key;
public BitmapWorkerTask(ImageView imageView, int position) {
// Use a WeakReference to ensure the ImageView can be garbage collected
imageViewReference = new WeakReference<ImageView>(imageView);
this.key = String.valueOf(position);
}
// Decode image in background.
@Override
protected Bitmap doInBackground(String... params) {
url = params[0];
return loadBitmap(url);
}
// Once complete, see if ImageView is still around and set bitmap.
@Override
protected void onPostExecute(Bitmap bitmap) {
if (imageViewReference != null && bitmap != null) {
final ImageView imageView = imageViewReference.get();
if (imageView != null && imageView.isShown()) {
Animation anim = AnimationUtils.loadAnimation(context, android.R.anim.fade_in);
imageView.setAnimation(anim);
imageView.setImageBitmap(bitmap);
anim.setDuration(5000);
anim.start();
addBitmapToMemoryCache(key, bitmap);
}
}
}
public Bitmap loadBitmap(String url) {
Bitmap bm = null;
try {
URL aURL = new URL(url);
URLConnection conn = aURL.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
bm = BitmapFactory.decodeStream(bis);
bis.close();
is.close();
} catch (Exception e) {
// Log.e(TAG, "Error getting bitmap", e);
}
return bm;
}
}
}
答案 0 :(得分：1)
清理您的项目，这可能会解决问题
答案 1 :(得分：0)
在添加 com.handlerexploit.prime.widgets.RemoteImageView 而不是ImageView后，其适配器类正在给出classNotFound Exception并想出如何解决这个问题？