Question

我正在尝试为GCM推送通知加载动态大图标。但它总是返回null。这是我的代码。 BitmapFactory.decode()始终返回null。我检查了这段代码来获取图像视图的一些图标，在这种情况下它可以正常工作，但不是我的情况。

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;
        }
    }

Answer 1

我得到了它...这是android Emulator的一个问题。我在使用模拟器2.2。当我把它切换到更新的版本时，它开始工作

android - GCM通知动态大图标不起作用

1 个答案: