如何拍摄并裁剪图像？

Question

我想捕获图像并对其进行裁剪，然后通过改进将该文件发送到服务器。 我尝试以下代码： 意图打开的摄像头

 Intent chooserIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    File f = new File(Environment.getExternalStorageDirectory(), "POST_IMAGE.jpg");
    chooserIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
    picUri = Uri.fromFile(f);
    startActivityForResult(chooserIntent, REQUEST_CAMERA_IMAGE);

onActivityResult

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_CAMERA_IMAGE) {
        path = data.getData();
        performCrop(path);
    }
}

和performCrop方法

private void performCrop(Uri picUri) {
    try {
        Intent cropIntent = new Intent("com.android.camera.action.CROP");
        cropIntent.setDataAndType(picUri, "image/*");
        cropIntent.putExtra("crop", true);
        cropIntent.putExtra("aspectX", 1);
        cropIntent.putExtra("aspectY", 1);
        cropIntent.putExtra("outputX", 300);
        cropIntent.putExtra("outputY", 300);
        cropIntent.putExtra("return-data", true);
        startActivityForResult(cropIntent, PIC_CROP);
    } catch (ActivityNotFoundException anfe) {

    }
}

但是此代码是错误的！该怎么做？

如果我保存捕获的图像，然后从图库中对其进行裁剪，是否有效？该怎么做？

感谢您的关注。