doudou8081 2016-02-27 13:33
浏览 46

上传相机预览android

I try to show camera preview in SurfaceView and upload that preview to my website. Something like a wireless webcam. Preview is displayed in surfaceView fine but it seem to be cannot upload to my website, i receive nothing in my website. Here is my code in android

 public class MainActivity extends AppCompatActivity {
 SurfaceView surfaceView;
 SurfaceHolder holder;
 private Camera camera;
 String MyImage;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    surfaceView = (SurfaceView) findViewById(R.id.surfaceView);
    holder = surfaceView.getHolder();

    holder.addCallback(new SurfaceHolder.Callback() {
        @Override
        public void surfaceCreated(SurfaceHolder holder) {
            camera = Camera.open();
        }

        @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
            try
            {
                camera.setPreviewDisplay(holder);
                camera.startPreview();
                camera.setDisplayOrientation(90);
                camera.setPreviewCallback(new Camera.PreviewCallback()
                {
                    public void onPreviewFrame(final byte[] data, final Camera camera)
                    {
                        MyImage = Base64.encodeToString(data, Base64.DEFAULT);
                        final ArrayList<NameValuePair> nameValuePairs = new  ArrayList<NameValuePair>();
                        nameValuePairs.add(new BasicNameValuePair("image",MyImage));
                        Thread t = new Thread(new Runnable() {
                            @Override
                            public void run() {
                                try{
                                    HttpClient httpclient = new DefaultHttpClient();
                                    HttpPost httppost = new HttpPost("http://nns12151069.esy.es/upload_image.php");
                                    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                                    HttpResponse response = httpclient.execute(httppost);
                                }catch(Exception e){e.printStackTrace();}
                            }
                        });
                        t.start();
                    }
                });
            }
             catch (IOException e) {e.printStackTrace();}
        }

        @Override
        public void surfaceDestroyed(SurfaceHolder holder) {
            camera.stopPreview();
            camera.release();
            camera = null;
        }
    });
}
}

and .php file which receive preview in website

 <?php
 $base=$_REQUEST['image'];
 $binary=base64_decode($base);
 header('Content-Type: bitmap; charset=utf-8');
 $file = fopen('uploaded_image.jpg', 'wb');
 fwrite($file, $binary);
 fclose($file);


 $path = "publib_html/"; 
 $tmp_name = $_FILES['file']['tmp_name'];
 $name = $_FILES['file']['name'];
 $type = $_FILES['file']['type']; 
 $size = $_FILES['file']['size']; 

 move_uploaded_file($tmp_name,$path.$name);
 ?>
  • 写回答

1条回答 默认 最新

  • douque9815 2016-02-27 13:39
    关注

    Preview images are not normally JPEG images, and your server code seems to suggest that you think that they are. The actual format is based on what you supply to setPreviewFormat() on Camera.Parameters and has to be one of the values from getSupportedPreviewFormats(). Most likely you will wind up with NV21 or YV12.

    评论

报告相同问题?

悬赏问题

  • ¥15 谁有desed数据集呀
  • ¥20 手写数字识别运行c仿真时,程序报错错误代码sim211-100
  • ¥15 关于#hadoop#的问题
  • ¥15 (标签-Python|关键词-socket)
  • ¥15 keil里为什么main.c定义的函数在it.c调用不了
  • ¥50 切换TabTip键盘的输入法
  • ¥15 可否在不同线程中调用封装数据库操作的类
  • ¥15 微带串馈天线阵列每个阵元宽度计算
  • ¥15 keil的map文件中Image component sizes各项意思
  • ¥20 求个正点原子stm32f407开发版的贪吃蛇游戏