UIImagePickerController的使用

调用摄像头拍摄照片和视频需要在真机上进行演示,不巧_{我玩儿不转}没成功_{7天超过了10个App什么鬼}
点击本地视频按钮,没有视频_{也需要在真机测试}555555

效果图 Gif.gif

ViewController.m文件

#import "ViewController.h"
#import <MobileCoreServices/MobileCoreServices.h>

@interface ViewController () <UIImagePickerControllerDelegate, UINavigationControllerDelegate>

@property (weak, nonatomic) IBOutlet UIImageView *selectedImageView;

@property (nonatomic, strong) UIImagePickerController *pickerCtrl;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor whiteColor];
    self.selectedImageView.layer.masksToBounds = YES;
    self.selectedImageView.layer.cornerRadius = 100;
}


#pragma mark - 拍照片
- (IBAction)takePhotoAction:(id)sender {
    [self takePhoto2];
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        UIImagePickerController *imagePickerCtrl = [[UIImagePickerController alloc] init];
        imagePickerCtrl.sourceType = UIImagePickerControllerSourceTypeCamera;
        imagePickerCtrl.delegate = self;
        imagePickerCtrl.mediaTypes = [NSArray arrayWithObjects:(__bridge_transfer NSString *)kUTTypeImage, nil];
        imagePickerCtrl.allowsEditing = YES;
        [self presentViewController:imagePickerCtrl animated:YES completion:nil];
    }
}


#pragma mark - 拍视频
- (IBAction)takeVideoAction:(id)sender {
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        UIImagePickerController *imagePickerCtrl = [[UIImagePickerController alloc] init];
        imagePickerCtrl.sourceType = UIImagePickerControllerSourceTypeCamera;
        imagePickerCtrl.delegate = self;
        imagePickerCtrl.mediaTypes = [NSArray arrayWithObjects:(__bridge_transfer NSString *)kUTTypeMovie, nil];
        imagePickerCtrl.allowsEditing = YES;
        [self presentViewController:imagePickerCtrl animated:YES completion:nil];
    }
}


#pragma mark - 显示图片
- (IBAction)showPhotoAction:(id)sender {
    UIImagePickerController *imagePickerCtrl = [[UIImagePickerController alloc] init];
    imagePickerCtrl.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    imagePickerCtrl.delegate = self;
    imagePickerCtrl.mediaTypes = [NSArray arrayWithObjects:(__bridge_transfer NSString *)kUTTypeImage, nil];
    imagePickerCtrl.allowsEditing = YES;
    [self presentViewController:imagePickerCtrl animated:YES completion:nil];
}


#pragma mark - 显示视频
- (IBAction)showVideoAction:(id)sender {
    UIImagePickerController *videoPickerCtrl = [[UIImagePickerController alloc] init];
    videoPickerCtrl.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    videoPickerCtrl.delegate = self;
    videoPickerCtrl.mediaTypes = [NSArray arrayWithObjects:(__bridge_transfer NSString *)kUTTypeMovie, nil];
    videoPickerCtrl.allowsEditing = YES;
    [self presentViewController:videoPickerCtrl animated:YES completion:nil];
    
}


#pragma mark - 自定义拍照
- (void)takePhoto2
{
    UIImagePickerController *pickerCtrl = [[UIImagePickerController alloc] init];
    pickerCtrl.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    pickerCtrl.delegate = self;
    pickerCtrl.mediaTypes = [NSArray arrayWithObjects:(__bridge_transfer NSString *)kUTTypeMovie, nil];
    pickerCtrl.allowsEditing = YES;
    pickerCtrl.showsCameraControls = NO;
    pickerCtrl.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
    pickerCtrl.cameraDevice = UIImagePickerControllerCameraDeviceFront;//前置两千万柔光双摄照亮你妹!
    pickerCtrl.cameraFlashMode = UIImagePickerControllerCameraFlashModeAuto;//闪光灯自动~
    
    
    UIView *ctrlView = [[UIView alloc] initWithFrame:self.view.bounds];
    UIButton *captureBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    [captureBtn setTitle:@"takePhoto" forState:UIControlStateNormal];
    [captureBtn setFrame:CGRectMake(CGRectGetWidth(self.view.bounds) - 120, CGRectGetHeight(self.view.bounds) - 50.f - 30.f, 120, 5)];
    [captureBtn setBackgroundColor:[UIColor grayColor]];
    [captureBtn addTarget:self action:@selector(captureBtnAction:) forControlEvents:UIControlEventTouchUpInside];
    [ctrlView addSubview:captureBtn];
    pickerCtrl.cameraOverlayView = ctrlView;
    self.pickerCtrl = pickerCtrl;
    [self presentViewController:pickerCtrl animated:YES completion:nil];
    
}
#pragma mark - captureBtnAction点击事件
/**
 *  对当前显示的摄像头画面进行拍照:
 
 */
- (void)captureBtnAction:(id)sender {
    [self.pickerCtrl takePicture];
}


#pragma mark - 自定义视频
- (void)takeVideoAction2
{
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        UIImagePickerController *imagePickerCtrl = [[UIImagePickerController alloc] init];
        imagePickerCtrl.sourceType = UIImagePickerControllerSourceTypeCamera;
        imagePickerCtrl.delegate = self;
        imagePickerCtrl.mediaTypes = [NSArray arrayWithObjects:(__bridge_transfer NSString *)kUTTypeMovie, nil];
        
        imagePickerCtrl.allowsEditing = YES;
        imagePickerCtrl.videoMaximumDuration = 0.5;
        //首次打开默认进入录制视频画面:
        imagePickerCtrl.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;
        
        [self presentViewController:imagePickerCtrl animated:YES completion:nil];
    }
}




#pragma mark - <UIImagePickerControllerDelegate>
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info {
    //字典包含了当前选中的数据:
    //选择图片,当我点击choose之后就会跳转到这里 , 而此时很显然我点选的那张图片就保存在了 info 字典里!!!
    if (info[UIImagePickerControllerMediaType] == (__bridge_transfer NSString *)kUTTypeImage)
    {
        UIImage *editImage = info[UIImagePickerControllerEditedImage];
        UIImage *originalImage = info[UIImagePickerControllerOriginalImage];
        [self.selectedImageView setImage:editImage];
        //如果资源类型是照相机类型:
        if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
            //就把拍摄的照片保存到系统相册中 , iOS默认不保存 , 所以我要在这个代理方法里让他保存到photoAlbum里!
            UIImageWriteToSavedPhotosAlbum(originalImage, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
            //拿到选取的视频路径:
            NSString *videoPath = info[UIImagePickerControllerMediaURL];
            //保存视频:
            UISaveVideoAtPathToSavedPhotosAlbum(videoPath, self, @selector(video:didFinishSavingWithError:contextInfo:), nil);
        }
    }
    else if (info[UIImagePickerControllerMediaType] == (__bridge_transfer NSString *)kUTTypeMovie)
    {
        //处理相应的视频内容并进行展示:
        
    }
    
    [picker dismissViewControllerAnimated:YES completion:nil];
}

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


#pragma mark - saved Photo
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
    if (error) {
        NSLog(@"save photo error");
    } else {
        NSLog(@"save photo success");
    }
}


#pragma mark - saved Video
- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
    if (error) {
        NSLog(@"save video error");
    } else {
        NSLog(@"save video success");
    }
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    
}

@end

愿编程让这个世界更美好