Android裁剪图像刚从相机中取出，并通过从图库中选择显示

Question

在我的应用程序中有一个活动，从相机中拍摄一张照片，保存它并显示在ImageView Follingby上。我使用FilePath类来指出将其存储在路径上的位置，CameraUtils类来获取file：uri并将图像转换为位图。现在我的任务是添加一个crop功能，以摆脱我们感兴趣的区域。裁剪功能应该在屏幕上激活，刚拍摄了一张照片，然后裁剪的照片需要保存才能显示。在此之前，请参阅添加crop前的工作代码：

    /*  Capture Image Method  */
        private void captureImage() {
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//Start intent with Action_Image_Capture
            fileUri = CameraUtils.getOutputMediaFileUri(this);//get fileUri from CameraUtils
            intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);//Send fileUri with intent
            //intent.putExtra("return-data",true); // Should be for crop
            startActivityForResult(intent, CAMERA_REQUEST_CODE);//start activity for result with CAMERA_REQUEST_CODE
        }

    /*  Show Captured over ImageView  */
        private void showCapturedImage() {
            if (!getImageUrl.equals("") && getImageUrl != null)
                imageView.setImageBitmap(CameraUtils.convertImagePathToBitmap(getImageUrl, false));
            else
                Toast.makeText(this, R.string.capture_image_failed, Toast.LENGTH_SHORT).show();
        }

private void CropImage() {

        try {
            Intent CropIntent = new Intent("com.android.camera.action.CROP");
            CropIntent.setDataAndType(uri, "image/*");

            CropIntent.putExtra("crop", "true");
            CropIntent.putExtra("outputX", 180);
            CropIntent.putExtra("outputY", 180);
            CropIntent.putExtra("aspectX", 3);
            CropIntent.putExtra("aspectY", 4);
            CropIntent.putExtra("scaleUpIfNeeded", true);
            CropIntent.putExtra("return-data", true);

            startActivityForResult(CropIntent, 1003);
        } catch (ActivityNotFoundException ex) {
            //
        }
    }

onActivityResult（）方法：

/**
 * public static final int PERMISSION_REQUEST_CODE = 1001;//request code for Camera and External Storage permission
 * private static final int CAMERA_REQUEST_CODE = 1002;//request code for capture image
 * private static final int CROP_REQUEST_CODE = 1003;//request code for crop
 */

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {

            case CAMERA_REQUEST_CODE:
                try {
                    //When image is captured successfully
                    if (resultCode == RESULT_OK) {
                        //Check if device SDK is greater than 22 then we get the actual image path via below method
                        if (Build.VERSION.SDK_INT > 22)
                            getImageUrl = FilePath.getPath(MainActivity.this, fileUri);
                        else
                            //else we will get path directly
                            getImageUrl = fileUri.getPath();

                        //After image capture show captured image over image view
                        showCapturedImage();

                    } else
                        Toast.makeText(this, R.string.cancel_message, Toast.LENGTH_SHORT).show();
                } catch (Exception e) {
                    e.printStackTrace();
                }
                break;
        }
    }

在此之前，所有的工作都很好，但是当涉及到插入crop函数时，我正在努力将具有所需请求代码的if else/语句添加到switch/case语句中，因为它会抛出未知错误。你能帮我创建正确的逻辑与多个请求代码，并使其工作，请？

Answer 1

在做了以下更改后，我可以使它工作。

首先，CropIntent通过键对值传递值，而键对值应该通过mediastore.extra_output传递，并且uri没有用正确的名称定义。

private void CropImage() {

        try {
            Intent CropIntent = new Intent("com.android.camera.action.CROP");
            CropIntent.setDataAndType(fileUri, "image/*");
            fileUri = CameraUtils.getOutputMediaFileUri(this);

            CropIntent.putExtra("crop", "true");
            CropIntent.putExtra("outputX", 180);
            CropIntent.putExtra("outputY", 180);
            CropIntent.putExtra("aspectX", 3);
            CropIntent.putExtra("aspectY", 4);
            CropIntent.putExtra("scaleUpIfNeeded", true);
            CropIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);

            startActivityForResult(CropIntent, CROP_REQUEST_CODE);

        } catch (ActivityNotFoundException ex) {
            //
        }
    }