Android：无法预览创作期间录制的视频

问题描述

我在Android开发过程中使用的是录像意图结构。我将录制的视频传输到云应用程序。我使用Android提供的视频录制界面，而不是专用界面。在某些设备上，当我按所录制视频的预览按钮时，该录制将关闭并删除。我该怎么办？

编辑：

  public void OpenVideoCamera(){
         if (ContextCompat.checkSelfPermission(fragment_activity,Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED ||
                 ContextCompat.checkSelfPermission(fragment_activity,Manifest.permission.READ_EXTERNAL_STORAGE) !=
 PackageManager.PERMISSION_GRANTED ||
                 ContextCompat.checkSelfPermission(fragment_activity,Manifest.permission.WRITE_EXTERNAL_STORAGE) !=
 PackageManager.PERMISSION_GRANTED ||
                 ContextCompat.checkSelfPermission(fragment_activity,Manifest.permission.RECORD_AUdio)
 != PackageManager.PERMISSION_GRANTED)  {
             AlertDialog.Builder alertBuilder = new AlertDialog.Builder(fragment_activity);
             alertBuilder.setCancelable(true);
             alertBuilder.setTitle(getString(R.string.permission_required_text));
             alertBuilder.setMessage(getString(R.string.camera_permission_text).replace("{0}",getString(R.string.application_name)));
             alertBuilder.setPositiveButton(android.R.string.yes,new DialogInterface.OnClickListener() {
                 @Override
                 public void onClick(DialogInterface dialog,int which) {
                     requestPermissions(new String[] {   Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.CAMERA,Manifest.permission.RECORD_AUdio,Manifest.permission.READ_EXTERNAL_STORAGE },PERMISSIONS_REQUEST_VID_UPLOAD);
                 }
             });
             AlertDialog alert = alertBuilder.create();
             alert.show();
             //sneaker.warning(getString(R.string.require_permission));
         } else {
             StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
             StrictMode.setVmPolicy(builder.build());
             String temp_path = Environment.getExternalStorageDirectory().getPath() + "/" +
 getString(R.string.application_name) + "/temp";
             File temp_folder = CommonFeaturesController.getCommonFeaturesInstance().setFilePermissionFromFile(new
 File(temp_path));
             try {
                 if (!temp_folder.exists()) {
                     if (CommonFeaturesController.getCommonFeaturesInstance().isAuthorized())
                         temp_folder.mkdirs();
                 }
             } catch (Exception e) {
             }
             mediaFile = CommonFeaturesController.getCommonFeaturesInstance().setFilePermissionFromFile(new
 File(temp_path,"VIDEO_" + String.valueOf(System.currentTimeMillis())
 + ".mp4"));
             Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
             takeVideoIntent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(mediaFile));
             if (takeVideoIntent.resolveActivity(getContext().getPackageManager()) !=
 null) {
                 startActivityForResult(takeVideoIntent,CAMERA_VID_REQUEST);
                 CommonFeaturesController.getCommonFeaturesInstance().setIsExternalIntent(true);
             }
         }
     }

解决方法

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