3回答

• 

  慕移动7060061

  2020-03-10 10:51:38

  public static Bitmap loadImage(String sendUrl) {
      try {
          URL url = new URL(sendUrl);
          HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
          conn.setReadTimeout(5000);
          conn.setRequestMethod("GET");
          InputStream stream = conn.getInputStream();
          String fileName = System.currentTimeMillis()+".jpg";
          FileOutputStream outputStream = null;
          File fileDownload = null;
          if (Environment.getExternalStorageState().equals(
                  Environment.MEDIA_MOUNTED)) {
              File parent = Environment.getExternalStorageDirectory();
              fileDownload = new File(parent, fileName);
              outputStream = new FileOutputStream(fileDownload);
          }
          byte[] bytes = new byte[2 * 1024];
          int lens;
          if (outputStream != null) {
              while ((lens = stream.read(bytes)) != -1) {
                  outputStream.write(bytes, 0, lens);
              }
              return BitmapFactory.decodeFile(fileDownload.getAbsolutePath());
          } else {
              return null;
          }
      } catch (MalformedURLException e) {
          //这个URL能不能被解析成URL
          e.printStackTrace();
          Log.e("aa", "异常 MalformedURLException=" + e);
          return null;
      } catch (IOException e) {
          e.printStackTrace();
          Log.e("aa", "异常 IOException=" + e);
          return null;
      }
  }

  
  

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• 

  慕移动7060061

  2020-03-10 10:48:54

  就是本节所讲的这个例子，下载网络图片，在Android6.0上的模拟器加载的出来，Android10.0的模拟器的提示异常无法显示图片。

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• 

  qq_慕工程6566427

  2020-03-07 19:53:25

  啥意思？

  
  

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