iOS开发小技巧--相机相册的正确打开方式

iOS相机相册的正确打开方式- UIImagePickerController

UIImagePickerControllerSourceTypePhotoLibrary, // 相册库,范围比PhotosAlbum要大
UIImagePickerControllerSourceTypeCamera, // 相机
UIImagePickerControllerSourceTypeSavedPhotosAlbum // 相册

[UIImagePickerController isSourceTypeAvailable:type]

/// 打开相机
- (void)openCamera
{
[self openImagePickerControllerWithType:UIImagePickerControllerSourceTypeCamera];
}
/// 打开相册
- (void)openAlbum
{
[self openImagePickerControllerWithType:UIImagePickerControllerSourceTypePhotoLibrary];
}
/// 打开ImagePickerController的方法
- (void)openImagePickerControllerWithType:(UIImagePickerControllerSourceType)type
{
// 设备不可用  直接返回
if (![UIImagePickerController isSourceTypeAvailable:type]) return;

UIImagePickerController *imgPicker = [[UIImagePickerController alloc] init];
imgPicker.sourceType = type;
imgPicker.delegate = self;
[self presentViewController:imgPicker animated:YES completion:nil];
}

注意:一定记得dismiss

#pragma mark - UINavigationControllerDelegate, UIImagePickerControllerDelegate
// 选择照片之后
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{
//    ChaosLog(@"%@",info);
// 获取用户选择的图片
UIImage *image = info[UIImagePickerControllerOriginalImage];

[self.photosView addPhoto:image];

// 退出imagePickerController
[self dismissViewControllerAnimated:YES completion:nil];
[self.textView becomeFirstResponder];
}