/**
* 获取图标
*
* @param url 图标的地址
* @param callback 异常处理网络事件 GET_ICON, GET_ICON_FAILED
* @return
*/
public Bitmap get(String url, Handler callback) {
WeakReference<Bitmap> ref = imageCache.get(url);
if (ref != null && ref.get() != null) // 内存有
{
return ref.get();
}
// 读文件
File iconFile = new File(getIconFullPath(url));
byte[] icondata = null;
if (iconFile.exists()) {
try {
FileInputStream fis = new FileInputStream(iconFile);
icondata = Tools.readByteFromInputStream(fis);
Bitmap iconTemp = BitmapFactory.decodeByteArray(icondata, 0, icondata.length);
put(url, iconTemp);
return iconTemp;
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
ImageRequest req = new ImageRequest(url, callback);
// 读网络
synchronized (locker) {
if (iconRequest.contains(req)) // 如果已经发了请求
{
return null;
} else {
iconRequest.add(req);
// Log.v("Test", "add" + req.url);
}
}
sendIconRequest(req);
return null;
}
private String getIconFullPath(String url) {
String localPath = Tools.tranferUrltoLocalPath(url);
String absolutePath = Tools.getStorePath(ReadApplication.getAppContext(), ICON_PATH);
return absolutePath + File.separator + localPath;
}