iOS最普通的图片选择modal

图片选择modal视图

// 通过懒加载创建图片
- (UIAlertController *)imgSheetVC {
    if (_imgSheetVC == nil) {
    	// 这里可以添加标题或者提示信息
        _imgSheetVC = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet];
        
        UIAlertAction *cameraAC = [UIAlertAction actionWithTitle:@"相机" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
            [self presentViewController:self.imagePicker animated:YES completion:nil];
        }];
        
        UIAlertAction *photoLibraryAC = [UIAlertAction actionWithTitle:@"图库" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            self.imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
            [self presentViewController:self.imagePicker animated:YES completion:nil];
        }];
        
        UIAlertAction *cancelAC = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
        }];
        
        [_imgSheetVC addAction:cameraAC];
        [_imgSheetVC addAction:photoLibraryAC];
        [_imgSheetVC addAction:cancelAC];
    }
    return _imgSheetVC;
}