IOS 之相机照片使用

古城微笑少年丶 2022-09-18 06:58 205阅读 0赞

导入头文件和库

\#import <MobileCoreServices/UTCoreTypes.h>

MobileCoreServices.framework

UIImagePickerController是图像选取器,可以照相录制和照片库进行读取片源显示.

<UIImagePickerControllerDelegate, UINavigationControllerDelegate>使用的时候要符合这两个协议.接着是使用协议方法进行读取拍摄的照片或者照片库里的照片.

使用方法如下: 设置并打开照片库或者相机

NSArray* mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:sourceType];//返回可用的类型
        if ( [UIImagePickerController isSourceTypeAvailable:sourceType]
            && [mediaTypes count] > 0) {
            UIImagePickerController* picker = [[UIImagePickerController alloc] init];
            picker.delegate = self;
            picker.mediaTypes = mediaTypes;
            picker.allowsEditing = YES;
            picker.sourceType = sourceType; //设置选取器的数据原来,可以来自相机也可以来自照片库.
            [self presentViewController:picker animated:YES completion:nil];
        }else{
            UIAlertView *alert =
            [[UIAlertView alloc] initWithTitle:@"Error accessing media"
                                       message:@"Device doesn’t support that media source."
                                      delegate:nil
                             cancelButtonTitle:@"Drat!"
                             otherButtonTitles:nil];
            [alert show];
        }

选取后,在协议方法里获取数据:

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
    { //选区后执行的方法 
        NSString* mediaType = info[UIImagePickerControllerMediaType];
        if ( [mediaType isEqual:(NSString*)kUTTypeImage] ) { //如果是照片图片的话执行
            UIImage* imagee = info[UIImagePickerControllerEditedImage];
            self.image = image;
        }else if ( [mediaType isEqual:(NSString*)kUTTypeMovie] ){ //如果影片的话执行
            self.mediaURl = info[UIImagePickerControllerMediaURL];
        }
        [picker dismissViewControllerAnimated:YES completion:nil];
    }
    //点取消后执行的方法
    -(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
    {
        [picker dismissViewControllerAnimated:YES completion:nil];
    }