choose_picture()
{
    let actionSheet = this.ActionSheetController.create({
        buttons: [
            {
                icon: 'camera',
                text: this.translate.instant('From Camera'),
                handler: () => {
                    Camera.getPicture({
                        destinationType: 0,
                        sourceType: 1,
                        saveToPhotoAlbum: false,
                        targetWidth: 500,
                        targetHeight: 500,
                        allowEdit: true,
                    }).then(
                        (imageData) => {
                            this.picture = 'data:image/jpeg;base64,' + imageData;
                        },
                        (err) => {
                            console.log('Error', err);
                        });
                }
            },
            {
                icon: 'image',
                text: this.translate.instant('From Gallery'),
                handler: () => {
                    Camera.getPicture({
                        destinationType: 0,
                        sourceType: 2,
                        saveToPhotoAlbum: false,
                        targetWidth: 500,
                        targetHeight: 500,
                        allowEdit: true,
                    }).then(
                        (imageData) => {
                            this.picture = 'data:image/jpeg;base64,' + imageData;
                        },
                        (err) => {
                            console.log('Error', err);
                        });
                }
            },
            {
                icon: 'close',
                text: this.translate.instant('Cancel'),
                role: 'cancel',
                handler: () => {
                    //console.log('Cancel clicked');
                }
            }
        ]
    });

    actionSheet.present();
}