Java 将输入流转换为位图
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Converting input stream into bitmap
提问by Indrek K?ue
I have problems converting a input stream from web into bitmap. Problem occurs only when input image type is .BMP (bitmap). In that case: bitmapFactory.decodeStream returns null.
我在将输入流从 Web 转换为位图时遇到问题。仅当输入图像类型为 .BMP（位图）时才会出现问题。在这种情况下：bitmapFactory.decodeStream 返回 null。
Any hints how to fix this problem or where should I continue my debugging?
任何提示如何解决此问题或我应该在哪里继续调试？
Platform: Android (Honeycomb)
平台：安卓（蜂窝）
URLConnection conn = url.openConnection();
conn.connect();
inputStream = conn.getInputStream();
bufferedInputStream = new BufferedInputStream(inputStream);
bmp = BitmapFactory.decodeStream(bufferedInputStream);
采纳答案by Indrek K?ue
Thank you @Amir for point out the log. Discovered a line:
谢谢@Amir 指出日志。发现一行：
decoder->decode returned false
This seems to be a common problem. Doing a search I found a solution.
这似乎是一个普遍的问题。进行搜索，我找到了解决方案。
My previous code:
我之前的代码：
URLConnection conn = url.openConnection();
conn.connect();
inputStream = conn.getInputStream();
bufferedInputStream = new BufferedInputStream(inputStream);
bmp = BitmapFactory.decodeStream(bufferedInputStream);
Code which is working:
正在工作的代码：
HttpGet httpRequest = null;
try {
httpRequest = new HttpGet(url.toURI());
} catch (URISyntaxException e) {
e.printStackTrace();
}
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = (HttpResponse) httpclient.execute(httpRequest);
HttpEntity entity = response.getEntity();
BufferedHttpEntity bufHttpEntity = new BufferedHttpEntity(entity);
InputStream instream = bufHttpEntity.getContent();
bmp = BitmapFactory.decodeStream(instream);
