1、在AndroidManifest.xml中添加如下代码

2、在res目录下新建一个xml文件夹，并且新建一个provider_paths的xml文件

3、主文件中打开相机

Intent intent=new Intent(MediaStore.ACTION_VIDEO_CAPTURE); try {
      //fileUri=Uri.fromFile(createMediaFile());如果这样写会报错     fileUri= FileProvider.getUriForFile(CameraVideoActivity.this,getApplicationContext().getPackageName() + ".provider",createMediaFile());//这是正确的写法 } catch (IOException e) {
      e.printStackTrace(); } intent.putExtra(MediaStore.EXTRA_OUTPUT,fileUri); intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY,1); startActivityForResult(intent,1);

4、创建并保存视频的方法

private File createMediaFile() throws IOException {
      if(Utils.checkSDCardAvaliable()) {
          if ((Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))) {
              // 选择自己的文件夹             String path = Environment.getExternalStorageDirectory().getPath() + "/myvideo/";             // Constants.video_url 是一个常量，代表存放视频的文件夹             File mediaStorageDir = new File(path);             if (!mediaStorageDir.exists()) {
                  if (!mediaStorageDir.mkdirs()) {
                      Log.e("TAG", "文件夹创建失败");                     return null;                 }             }             // 文件根据当前的毫秒数给自己命名             String timeStamp = String.valueOf(System.currentTimeMillis());             timeStamp = timeStamp.substring(7);             String imageFileName = "V" + timeStamp;             String suffix = ".mp4";             File mediaFile = new File(mediaStorageDir + File.separator + imageFileName + suffix);             return mediaFile;         }     }     return null; } }

5、重写onActivityResult方法

@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {
      if(requestCode==1)     {
          if(resultCode==RESULT_OK)         {
              Toast.makeText(this, "Video saved to:\n" +                     data.getData(), Toast.LENGTH_LONG).show();             vv_play.setVideoURI(fileUri);             vv_play.requestFocus();         }     } }

6、DDMS截图