Android CameraX returns 成功但未保存图片

Android CameraX returns success but not saving picture

我已经实现了 android camerax 但它无法正确捕获图像,回调 returns 成功但无法找到或查看图像。

我的实现:

private void startCamera(){
    final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(this);
    cameraProviderFuture.addListener(new Runnable() {
        @Override
        public void run() {
            try {
                ProcessCameraProvider provider = cameraProviderFuture.get();
                bindPreview(provider);
            } catch (Exception e){
                e.printStackTrace();
            }
        }
    }, ContextCompat.getMainExecutor(this));
}

private void bindPreview(@NonNull ProcessCameraProvider cameraProvider){
    Preview preview = new Preview.Builder().build();
    CameraSelector selector = new CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_FRONT).build();
    ImageCapture.Builder builder = new ImageCapture.Builder();
    final ImageCapture imageCapture = builder.setTargetRotation(this.getWindowManager().getDefaultDisplay().getRotation()).build();
    preview.setSurfaceProvider(cameraView.createSurfaceProvider());
    cameraProvider.bindToLifecycle(this,selector,preview,imageCapture);
    btnCapture.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            selfieFile = new File(getFilesDir(),"attendance.jpg");
            OutputFileOptions outputFileOptions = new OutputFileOptions.Builder(selfieFile).build();
            imageCapture.takePicture(outputFileOptions, executor, new ImageCapture.OnImageSavedCallback() {
                @Override
                public void onImageSaved(@NonNull ImageCapture.OutputFileResults outputFileResults) {
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Glide.with(CameraActivity.this).load(outputFileResults.getSavedUri()).into(capturedImage);
                            //updateUI(false);
                        }
                    });
                }

                @Override
                public void onError(@NonNull ImageCaptureException exception) {

                }
            });
        }
    });
}

我已经尝试加载 Uri.fromFile() 并尝试获取 imageproxy 并转换为位图,但仍然有这些问题。任何帮助将不胜感激...

根据 ImageCapture.OutputFileResults.getSavedUri() 的文档,当 ImageCapture.OutputFileOptions 由 MediaStore 支持时,此方法仅 returns 一个值,即当您使用 ImageCapture.OutputFileOptions.Builder(ContentResolver, Uri, ContentValues).

您正在使用 ImageCapture.OutputFileOptions.Builder(File),这意味着您在调用 ImageCapture.OutputFileResults.getSavedUri() 时应该会收到 null

我对 Glide 不够熟悉,所以我不确定为什么使用 Uri.fromFile() 加载图像不起作用。您可以尝试直接在 ImageView 上设置图像,看看您是否误用了 Glide:

capturedImage.setImageURI(Uri.fromFile(selfieFile))