转换输入流中的位图 [英] Converting input stream into bitmap

问题描述

我从网上转换输入流中的位图的问题。问题只发生在输入图像类型为.BMP（位图）。在这种情况下： bitmapFactory.de codeStream返回null 。

任何提示如何解决这个问题，或者我应该继续我的调试？

平台：Android的（蜂窝）

 的URLConnection康恩= url.openConnection（）;
conn.connect（）;

的InputStream = conn.getInputStream（）;

的BufferedInputStream =新的BufferedInputStream（InputStream的）;

BMP = BitmapFactory.de codeStream（的BufferedInputStream）;
 

解决方案

感谢您@Amir的点出日志。发现了一个行：

 德codeR-＆GT;德code返回false
 

这似乎是一个共同的问题。做了搜索，我发现一个解决方案。

我的previous code：

 的URLConnection康恩= url.openConnection（）;
conn.connect（）;

的InputStream = conn.getInputStream（）;

的BufferedInputStream =新的BufferedInputStream（InputStream的）;

BMP = BitmapFactory.de codeStream（的BufferedInputStream）;
 

code这是工作的：

  HTTPGET HTT prequest = NULL;

尝试 {
    HTT prequest =新HTTPGET（url.toURI（））;
}赶上（的URISyntaxException E）{
    e.printStackTrace（）;
}

HttpClient的HttpClient的=新DefaultHttpClient（）;

HTT presponse响应=（HTT presponse）httpclient.execute（HTT prequest）;

HttpEntity实体= response.getEntity（）;

BufferedHttpEntity bufHttpEntity =新BufferedHttpEntity（实体）;

InputStream的河道= bufHttpEntity.getContent（）;

BMP = BitmapFactory.de codeStream（河道）;
 

<一个href="http://groups.google.com/group/android-developers/browse_thread/thread/10a3821158f17be1">Source

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.

Any hints how to fix this problem or where should I continue my debugging?

Platform: Android (Honeycomb)

URLConnection conn = url.openConnection();
conn.connect();

inputStream = conn.getInputStream();

bufferedInputStream = new BufferedInputStream(inputStream);

bmp = BitmapFactory.decodeStream(bufferedInputStream);

解决方案

Thank you @Amir for point out the log. Discovered a line:

decoder->decode returned false

This seems to be a common problem. Doing a search I found a solution.

My previous code:

URLConnection conn = url.openConnection();
conn.connect();

inputStream = conn.getInputStream();

bufferedInputStream = new BufferedInputStream(inputStream);

bmp = BitmapFactory.decodeStream(bufferedInputStream);

Code which is working:

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);

Source

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