选择一个后裁剪图像的最佳方式

Question

需要裁剪图像的最佳方式

尝试了一些方法，但它没有给我正确裁剪的选项，如果你可以请帮我提供示例和裁剪图像的最佳方法

private void selectFile() {

    Intent img = new Intent(Intent.ACTION_OPEN_DOCUMENT);

    img.setType("image/*");

    startActivityForResult(i, 3000);

}

--- Mohammed --- 裁剪后如何获取Uri

                Uri uri = data.getData();

                getContentResolver().takePersistableUriPermission(Objects.requireNonNull(uri), Intent.FLAG_GRANT_READ_URI_PERMISSION);

                stickerPack.addSticker(uri, this);

            }

            finish();

            startActivity(getIntent());

        }

Answer 1

您可以使用默认的 android Crop 功能int PICK_IMAGE_REQUEST = 100;int PIC_CROP = 1;void chooseImageFromGallery() {    if (isPermissionsGranted(Manifest.permission.READ_EXTERNAL_STORAGE)) {        Intent intent = new Intent(Intent.ACTION_PICK,                MediaStore.Images.Media.EXTERNAL_CONTENT_URI);        startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);    } else {        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {            requestPermissions(arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE),                    PICK_IMAGE_REQUEST);        }    }} @Override void onRequestPermissionsResult(int requestCode,        String permissions[], int[] grantResults) {        super.onRequestPermissionsResult(requestCode, permissions, grantResults)               if (requestCode == PICK_IMAGE_REQUEST && grantResults.length > 0  && grantResults[0] == PackageManager.PERMISSION_GRANTED ) {                chooseImageFromGallery()               }    }@Override void onActivityResult(Int requestCode, Int resultCode, Intent data) {    if (resultCode == Activity.RESULT_OK && requestCode == PICK_IMAGE_REQUEST) {        Uri imageUri = data?.data        performCrop(imageUri)    }else if(resultCode == Activity.RESULT_OK && requestCode == PIC_CROP){     // get the returned data    Bundle extras = data.getExtras();    // get the cropped bitmap    Bitmap selectedBitmap = extras.getParcelable("data");    imgView.setImageBitmap(selectedBitmap);    }}private void performCrop(Uri picUri) {try {    Intent cropIntent = new Intent("com.android.camera.action.CROP");    // indicate image type and Uri    cropIntent.setDataAndType(picUri, "image/*");    // set crop properties here    cropIntent.putExtra("crop", true);    // indicate aspect of desired crop    cropIntent.putExtra("aspectX", 1);    cropIntent.putExtra("aspectY", 1);    // indicate output X and Y    cropIntent.putExtra("outputX", 128);    cropIntent.putExtra("outputY", 128);    // retrieve data on return    cropIntent.putExtra("return-data", true);    // start the activity - we handle returning in onActivityResult    startActivityForResult(cropIntent, PIC_CROP);}// respond to users whose devices do not support the crop actioncatch (ActivityNotFoundException anfe) {    // display an error message    String errorMessage = "Whoops - your device doesn't support the crop action!";    Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);    toast.show();}}或者您可以使用任何库来选择和裁剪图像，请检查这些库https://github.com/ArthurHub/Android-Image-Cropperhttps://github.com/Yalantis/uCrop