相机意图返回空的onActivityResult [英] Camera Intent returns null onActivityResult

问题描述

我正在尝试拍照并将其保存到自定义位置-

I am trying to take a photo and to save it to a custom location-

public void SavePhoto(View view){

    Intent imageIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());

    File imagesFolder = new File(Environment.getExternalStorageDirectory(), "WorkingWithPhotosApp");
    imagesFolder.mkdirs();

    File image = new File(imagesFolder, "QR_" + timeStamp + ".png");
    Uri uriSavedImage = Uri.fromFile(image);

    imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
    startActivityForResult(imageIntent, REQUEST_IMAGE_CAPTURE);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if(data==null){
        Toast.makeText(MainActivity.this, "Data is null", Toast.LENGTH_SHORT).show();
    }
    else{
        if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
            Bundle extras = data.getExtras();
            Bitmap imageBitmap = (Bitmap) extras.get("data");
            ImageView mImageView=(ImageView)findViewById(R.id.imageView);
            mImageView.setImageBitmap(imageBitmap);
        }
    }
}

data在onActivityResult()中为null.我想念什么?

data is null in onActivityResult(). What did I miss?

推荐答案

您在此处预先插入了一个uri:

Your preinsert a uri here:

 imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);

因此，当您获得Activity.RESULT_OK时，只需通过已知的URL加载已拍摄的照片.然后，您可以像下面一样设置路径onActivityResult，但是您需要将其转换为位图.

So when you get a Activity.RESULT_OK just load the taken photo by its known url. Then you can set the path onActivityResult like below but you need to convert in to Bitmap.

if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
           // Convert here your uri to bitmap then set it.//
            mImageView.setImageBitmap(YOUR_BITMAP);
 }

这篇关于相机意图返回空的onActivityResult的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！