Question

我正在使用nexus 5进行测试。有时我的相机应用程序在拍摄照片后卡住/挂起并且不返回我的应用程序。它会在几秒后返回，并且不会调用activityResult（）。在三星galaxy j5中，点击图片后有时会出现白屏。

我的代码

public void openCamera() {



        if (!checkPermission(Manifest.permission.CAMERA, context)) {
            requestPermission(Manifest.permission.CAMERA, 11, getActivity());
            return;
        }

        if (!checkPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE, context)) {
            requestPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE, 121, getActivity());
            return;
        }

        if (!checkPermission(Manifest.permission.READ_EXTERNAL_STORAGE, context)) {
            requestPermission(Manifest.permission.READ_EXTERNAL_STORAGE, 121, getActivity());
            return;
        }
        boolean flag = true;
        try {
            photoFile = createImageFile();

        } catch (Exception ex) {
            flag = false;
            Toast.makeText(context, ""+ex, Toast.LENGTH_LONG).show();
            UtilityMethods.saveException(ex.getMessage(),"ab");
        }


        if (photoFile != null&&flag) {
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

            if(Build.VERSION.SDK_INT>=24) {
                intent.putExtra(MediaStore.EXTRA_OUTPUT, FileProvider.getUriForFile(context, context.getApplicationContext().getPackageName() + ".provider", photoFile));
                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            }else {
                intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
            }

            intent.putExtra("android.intent.extras.CAMERA_FACING", 1);




        }else{
            UtilityMethods.saveException("file exception"+photoFile,"abc");
        }
    }

另一种方法

 private File createImageFile() throws Exception {


        String imageFileName = "JPEG_img";


        File storageDir = Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_PICTURES);
        if (!storageDir.exists()) {
            if (!storageDir.mkdirs()) {
                return null;
            }
        }
        File image = File.createTempFile(
                imageFileName,  /* prefix */
                ".jpg",         /* suffix */
                storageDir      /* directory */
        );


        pathOfPic = image.getAbsolutePath();
        return image;
    }

Answer 1

在API 24中已经使用了文件。以下是您的解决方案：

https://inthecheesefactory.com/blog/how-to-share-access-to-file-with-fileprovider-on-android-nougat/en

拍照后相机应用程序卡住，不要返回我的应用程序

1 个答案: