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我正在嘗試爲我的GCM推送通知加載動態大圖標。但它總是返回null。這是我的代碼。 BitmapFactory.decode()總是返回null。我檢查了這個代碼來獲取圖像視圖的一些圖標，並在這種情況下工作正常，但在我的情況下。android - GCM通知動態大圖標無法正常工作
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setLargeIcon(downloadBitmap(url))
.setContentTitle(context.getString(R.string.app_name))
.setContentText(message);
static public Bitmap downloadBitmap(String url) {
final AndroidHttpClient client = AndroidHttpClient.newInstance("Android");
final HttpGet getRequest = new HttpGet("http://files.softicons.com/download/system-icons/crystal-project-icons-by-everaldo-coelho/png/22x22/apps/skype.png");
Bitmap bitmap = null;
try {
HttpResponse response = client.execute(getRequest);
final int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
Log.w("ImageDownloader", "Error " + statusCode + " while retrieving bitmap from " + url);
return null;
}
final HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream inputStream = null;
try {
inputStream = entity.getContent();
bitmap = BitmapFactory.decodeStream(new FlushedInputStream(inputStream));
return bitmap;
} finally {
if (inputStream != null) {
inputStream.close();
}
entity.consumeContent();
}
}
} catch (Exception e) {
// Could provide a more explicit error message for IOException or IllegalStateException
getRequest.abort();
Log.w("ImageDownloader", "Error while retrieving bitmap from " + url + e.toString());
} finally {
if (client != null) {
client.close();
}
}
return bitmap;
}
static class FlushedInputStream extends FilterInputStream {
public FlushedInputStream(InputStream inputStream) {
super(inputStream);
}
@Override
public long skip(long n) throws IOException {
long totalBytesSkipped = 0L;
while (totalBytesSkipped < n) {
long bytesSkipped = in.skip(n - totalBytesSkipped);
if (bytesSkipped == 0L) {
int num_byte = read();
if (num_byte < 0) {
break; // we reached EOF
} else {
bytesSkipped = 1; // we read one byte
}
}
totalBytesSkipped += bytesSkipped;
}
return totalBytesSkipped;
}
}