Prevent Save the image to sd card in cordova camera plugin

Ionic Native
1

I want the base64 string only from the camera. but the image is automatically saved in Sd Card. How to prevent saving the image to Sd card. Here is the code used

const options = {
quality: 100,
destinationType: this.camera.DestinationType.DATA_URL,
targetWidth: 500,
targetHeight: 600,
correctOrientation: true,
encodingType: this.camera.EncodingType.PNG,
saveToPhotoAlbum:false
};
return this.camera.getPicture(options).then(imageData => {
const base64Image = ‘data:image/png;base64,’ + imageData;
return base64Image;
}, error => {
console.log('CAMERA ERROR -> ’ + JSON.stringify(error));
return “error”
});

i use the saveToPhotoAlbum:false in camera option still the image is saved and shown in gallery.