如何在Android中裁剪圖像

Question

我想將此方法用於android中的裁剪圖像

我在頁面上找到了代碼

但有個問題

我不知道如何獲得picUri

private void performCrop(Uri picUri) {
        try {
            Intent cropIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            cropIntent.setDataAndType(picUri, "image/*");
            cropIntent.putExtra("crop", true);
            cropIntent.putExtra("aspectX", 1);
            cropIntent.putExtra("aspectY", 1);
            cropIntent.putExtra("outputX", 128);
            cropIntent.putExtra("outputY", 128);
            cropIntent.putExtra("return-data", true);
            startActivityForResult(cropIntent, PIC_CROP);
        }
        catch (ActivityNotFoundException anfe) {
            String errorMessage = "Whoops - your device doesn't support the crop action!";
            Toast toast = Toast.makeText(getActivity(), errorMessage, Toast.LENGTH_SHORT);
            toast.show();
        }
    }
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == PIC_CROP) {
            if (data != null) {
                // get the returned data
                Bundle extras = data.getExtras();
                // get the cropped bitmap
                Bitmap selectedBitmap = extras.getParcelable("data");

                img.setImageBitmap(selectedBitmap);
            }
        }
    }

Answer 1

這是您可以執行的操作：以下方法執行的操作是獲取位圖並返回uri。

public Uri getImageUri(Context inContext, Bitmap inImage) {
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
    String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
    return Uri.parse(path);
} 

因此，您的代碼將如下所示：

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

    if (requestCode == PIC_CROP) {
        if (data != null) {
            // get the returned data
            Bundle extras = data.getExtras();
            // get the cropped bitmap
            Bitmap selectedBitmap = extras.getParcelable("data");
            //get the Uri when it is returned from the function.
            picUri = getImageUri(getApplicationContext(), selectedBitmap);
            img.setImageBitmap(selectedBitmap);
        }
    }
}
public Uri getImageUri(Context inContext, Bitmap inImage) {
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
    String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
    return Uri.parse(path);
} 

這應該是您從位圖獲取Uri的方式。 希望它能起作用！