Java 将输入流转换为位图

我无法将输入流从web转换为位图。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

有没有提示如何解决这个问题，或者我应该在哪里继续调试

平台：安卓（蜂窝）

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谢谢@Amir指出日志。发现一行：

decoder->decode returned false

这似乎是一个常见的问题。通过搜索，我找到了一个解决方案

我以前的代码：

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

inputStream = conn.getInputStream();

bufferedInputStream = new BufferedInputStream(inputStream);

bmp = BitmapFactory.decodeStream(bufferedInputStream);

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);

正在工作的代码：

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

inputStream = conn.getInputStream();

bufferedInputStream = new BufferedInputStream(inputStream);

bmp = BitmapFactory.decodeStream(bufferedInputStream);

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);

---

谢谢@Amir指出日志。发现一行：

decoder->decode returned false

这似乎是一个常见的问题。通过搜索，我找到了一个解决方案

我以前的代码：

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

inputStream = conn.getInputStream();

bufferedInputStream = new BufferedInputStream(inputStream);

bmp = BitmapFactory.decodeStream(bufferedInputStream);

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);

正在工作的代码：

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

inputStream = conn.getInputStream();

bufferedInputStream = new BufferedInputStream(inputStream);

bmp = BitmapFactory.decodeStream(bufferedInputStream);

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);

---

这里有一个简单的答案

val bitmap = BitmapFactory.decodeStream(inputStream)

---

返回一个

位图

这里是一个单行答案

val bitmap = BitmapFactory.decodeStream(inputStream)

---

返回一个

位图

是否有任何日志错误可以帮助？是否有任何日志错误可以帮助？我使用WCF服务，当我发送图像的字节[]并使用您的方法转换回位图图像时，但是BitmapFactory.decodeStream（instream）始终为空！！我使用WCF服务，当我发送图像的字节[]并使用您的方法将其转换回位图图像时，但BitmapFactory.decodeStream（instream）始终为空！！例如，您可以随意使用它来获取本地图像。例如，您可以随意使用它来获取本地图像