UIImagePickerController本地图片视频，相机录像机使用

最新推荐文章于 2016-09-26 09:17:00 发布

转载最新推荐文章于 2016-09-26 09:17:00 发布 · 101 阅读

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原文链接：http://www.cnblogs.com/sunjianfei/p/5508750.html

本文将介绍如何使用Objective-C和Swift两种语言进行iOS应用程序的开发，涵盖基础语法、开发工具设置、项目结构搭建及常见问题解决策略。

1.添加framework：MobileCoreServices

2.头：#import <MobileCoreServices/MobileCoreServices.h>

大致代码：

UIImagePickerController *imagePicker=[[UIImagePickerController alloc]init];;//实例并初始化；
imagePicker.delegate=self;//图像选择器委托设置为
//选取本地movie

        imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        imagePicker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
        [self presentViewController:imagePicker animated:YES completion:nil];


    //选取本地图片
        imagePicker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;
        imagePicker.mediaTypes=[[NSArray alloc] initWithObjects: (NSString *) kUTTypeImage, nil];
         [[UIApplication sharedApplication] setStatusBarHidden:YES];//隐藏状态栏；
        [self presentViewController:imagePicker animated:YES completion:nil];

//相机
if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]){

             imagePicker.sourceType=UIImagePickerControllerSourceTypeCamera;
             imagePicker.mediaTypes=[[NSArray alloc] initWithObjects: (NSString *) kUTTypeImage, nil];
             // [[UIApplication sharedApplication] setStatusBarHidden:YES];//隐藏状态栏；
             [self presentViewController:imagePicker animated:YES completion:nil];
        }else{
            NSLog(@"照相机不可用");
        }

   //录像机
        if ([UIImagePickerController isSourceTypeAvailable:   UIImagePickerControllerSourceTypeCamera]){

            imagePicker.sourceType=UIImagePickerControllerSourceTypeCamera;
            imagePicker.mediaTypes=[[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
             [[UIApplication sharedApplication] setStatusBarHidden:YES];//隐藏状态栏；
            [self presentViewController:imagePicker animated:YES completion:nil];
        }else{
            NSLog(@"照相机不可用");
        }
   3.回调

#pragma mark - UIImagePickerController代理方法
//完成
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
    NSString *mediaType=[info objectForKey:UIImagePickerControllerMediaType];
    if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {//如果是拍照
        UIImage *image;
        //如果允许编辑则获得编辑后的照片，否则获取原始照片
        if (self.imagePicker.allowsEditing) {
            image=[info objectForKey:UIImagePickerControllerEditedImage];//获取编辑后的照片
        }else{
            image=[info objectForKey:UIImagePickerControllerOriginalImage];//获取原始照片
        }
        [self.photo setImage:image];//显示照片
        UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);//保存到相簿
    }else if([mediaType isEqualToString:(NSString *)kUTTypeMovie]){//如果是录制视频
        NSLog(@"video...");
        NSURL *url=[info objectForKey:UIImagePickerControllerMediaURL];//视频路径
        NSString *urlStr=[url path];
        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(urlStr)) {
            //保存视频到相簿，注意也可以使用ALAssetsLibrary来保存
            UISaveVideoAtPathToSavedPhotosAlbum(urlStr, self, @selector(video:didFinishSavingWithError:contextInfo:), nil);//保存视频到相簿
        }
        
    }

    [self dismissViewControllerAnimated:YES completion:nil];
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
    NSLog(@"取消");
}

#pragma mark - 私有方法
-(UIImagePickerController *)imagePicker{
    if (!_imagePicker) {
        _imagePicker=[[UIImagePickerController alloc]init];
        _imagePicker.sourceType=UIImagePickerControllerSourceTypeCamera;//设置image picker的来源，这里设置为摄像头
        _imagePicker.cameraDevice=UIImagePickerControllerCameraDeviceRear;//设置使用哪个摄像头，这里设置为后置摄像头
        if (self.isVideo) {
            _imagePicker.mediaTypes=@[(NSString *)kUTTypeMovie];
            _imagePicker.videoQuality=UIImagePickerControllerQualityTypeIFrame1280x720;
            _imagePicker.cameraCaptureMode=UIImagePickerControllerCameraCaptureModeVideo;//设置摄像头模式（拍照，录制视频）
            
        }else{
            _imagePicker.cameraCaptureMode=UIImagePickerControllerCameraCaptureModePhoto;
        }
        _imagePicker.allowsEditing=YES;//允许编辑
        _imagePicker.delegate=self;//设置代理，检测操作
    }
    return _imagePicker;
}

//视频保存后的回调
- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{
    if (error) {
        NSLog(@"保存视频过程中发生错误，错误信息:%@",error.localizedDescription);
    }else{
        NSLog(@"视频保存成功.");
        //录制完之后自动播放
        NSURL *url=[NSURL fileURLWithPath:videoPath];
        _player=[AVPlayer playerWithURL:url];
        AVPlayerLayer *playerLayer=[AVPlayerLayer playerLayerWithPlayer:_player];
        playerLayer.frame=self.photo.frame;
        [self.photo.layer addSublayer:playerLayer];
        [_player play];
        
    }
}

转载于:https://www.cnblogs.com/sunjianfei/p/5508750.html