AndroidHttpClient 已弃用答案

【问题标题】：AndroidHttpClient is deprecatedAndroidHttpClient 已弃用
【发布时间】：2016-03-27 08:54:26
【问题描述】：

好吧，我的 ImageDownloader 类被新的 SDK 破坏了。我现在将如何进行这项工作？我是否有可能只替换以下一些类而不对我的代码进行重大更改？

static Bitmap downloadBitmap(String url) {
        final AndroidHttpClient client = AndroidHttpClient.newInstance("Android");
        final HttpGet getRequest = new HttpGet(url);

        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();
                    final Bitmap bitmap = BitmapFactory.decodeStream(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);
        } finally {
            if (client != null) {
                client.close();
            }
        }
        return null;
    }

【问题讨论】：

究竟是什么坏了，你现在收到什么错误？
你为什么使用AndroidHttpClient？它确实很古老，多年来一直没有被推荐。仅在最早的 Android 版本中。你应该早就换掉了。无论如何，为什么要大惊小怪？这只是一种方法。重写它应该很简单。到目前为止你尝试了什么？为什么你不能自己做？

标签： java android http httpconnection androidhttpclient

【解决方案1】：

你可以用这个：

compile 'org.jbundle.util.osgi.wrapped:org.jbundle.util.osgi.wrapped.org.apache.http.client:4.1.2'

或在 gradle 文件中：

android {
    compileSdkVersion 23
    buildToolsVersion '23.0.2'
    useLibrary 'org.apache.http.legacy' //<-this line only

或者您可以更新代码并像这样使用HttpURLConnection：

URL url = new URL("your_url");
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setReadTimeout(10000);
httpURLConnection.setConnectTimeout(15000);
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoInput(true);
httpURLConnection.setDoOutput(true);
setupDataToDB();
OutputStream outputStream = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream));
bufferedWriter.write(StringGenerator.queryResults(nameValuePairs));
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
httpURLConnection.connect();
InputStream inputStream = new BufferedInputStream(httpURLConnection.getInputStream());

希望对你有帮助！！！

【讨论】：

【解决方案2】：

您可以从以下位置获取 inputStream：

HttpURLConnection urlConnection = null;
try {
    URL url = new URL(path);
    urlConnection = (HttpURLConnection) url.openConnection();
    urlConnection.setConnectTimeout(CONNECTON_TIMEOUT_MILLISECONDS);
    urlConnection.setReadTimeout(CONNECTON_TIMEOUT_MILLISECONDS);
    inputStream = urlConnection.getInputStream();
    //add code to take bitmap here
} finally {
    if (urlConnection != null) {
        urlConnection.disconnect();
    }
}

然后从中获取位图。

【讨论】：

【解决方案3】：

你也可以探索Retrofithtttp客户端

【讨论】：