IOS开发之UIImagePckerController

建议在看的时候把Screen拉到最宽＝＝＝＝＝＝让这行文字在一行显示＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝

1. 注意使用之前必须要先导入UIKit框架

2.使用

创建UIImagePckerController

2.使用流程： ｜
｜
sourceType（选择相册／摄像头）
｜ 摄像头:UIImagePickerControllerSourceTypeCamera
｜ 相册:UIImagePickerControllerSourceTypePhotoLibrary
｜ 相册:UIImagePickerControllerSourceTypeSavedPhotosAlbum
cameraCaptureMode （选择照相／录像） 设置录像 默认拍照----要先选择媒体的类型 不然会崩溃
｜ 录像:UIImagePickerControllerCameraCaptureModeVideo
｜ 拍照:UIImagePickerControllerCameraCaptureModePhoto
cameraDevice （前摄像头／后摄像头）
｜ 前摄像头:UIImagePickerControllerCameraDeviceFront
｜ 后置摄像头:UIImagePickerControllerCameraDeviceRear
showsCameraControls 是否显示控件
｜YES

｜NO

takePicture 设置 拍照
｜
｜
mediaTypes 选择媒体类型
// 拍照的时候不选择媒体类型 不会奔溃 是因为默认设置是KUTTypeImage；
// 需要导入MobileCoreServices框架， MobileCoreServices这个框架中需要的不是oc需要的字符串类型 需要强制转换
// pickcontroller.mediaTypes =@[(NSString *)kUTTypeImage];

｜

｜

startVideoCapture 设置 录像
｜ startVideoCapture
｜ stopVideoCapture
设置清晰度
｜ 清晰模式
｜ UIImagePickerControllerQualityTypeLow
｜ UIImagePickerControllerQualityTypeMedium
｜ UIImagePickerControllerQualityTypeLow
｜ 尺寸
｜ UIImagePickerControllerQualityType640x480
｜ UIImagePickerControllerQualityTypeIFrame1280x720
｜ UIImagePickerControllerQualityTypeIFrame960x540
videoMaximumDuration 设置视频最大的录像时间

｜

｜

cameraFlashMode 设置闪光
｜ UIImagePickerControllerCameraFlashModeOff = -1,
｜ UIImagePickerControllerCameraFlashModeAuto = 0,
｜ UIImagePickerControllerCameraFlashModeOn = 1
cameraViewTransform 设置拍照页面的形态 （ CGAffineTransform）

代理：一共有两个代理： UINavigationControllerDelegate, UIImagePickerControllerDelegate
一个是导航栏代理 一个是pickcontroller代理

// 采集完成之后调用

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info;

// 采集取消的时候调用
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker;

// 把图片保存到相册
UIImageWriteToSavedPhotosAlbum(finashImage, self, @selector(image: didFinishSavingWithError:contextInfo:), nil);
// 保存照片成功 回调方法

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{

NSLog(@"保存成功");
}

// 视频保存到相册之后调用
UISaveVideoAtPathToSavedPhotosAlbum(info[UIImagePickerControllerMediaURL], self, @selector(video:didFinishSavingWithError:contextInfo:), nil);
// 保存视频成功 回调方法

- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{

AVPlayer *player = [AVPlayer playerWithURL:[NSURL fileURLWithPath:videoPath]];

AVPlayerViewController *avplayercon = [[AVPlayerViewController alloc]init];

avplayercon.player = player;

[self presentViewController:avplayercon animated:YES completion:nil];

}

代码如下：（example）＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝

#define SCREEN_BOUNDS [UIScreen mainScreen].bounds//屏幕尺寸

#define SCREEN_WIDTH CGRectGetWidth([UIScreen mainScreen].bounds)//屏幕宽

#define SCREEN_HEIGHT CGRectGetHeight([UIScreen mainScreen].bounds)//屏幕高

@interface ViewController ()<UINavigationControllerDelegate, UIImagePickerControllerDelegate>{

UIImagePickerController *pickcontroller;

UILabel *showTypeLable;

BOOL isMovie;//判断摄像拍照的依据

UIImageView *imageView;//显示拍照录像结果的视图

}

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

button.frame = CGRectMake(100, 100, 100, 100);

[button setTitle:@"Camera" forState:UIControlStateNormal];

button.backgroundColor = [UIColor brownColor];

[button addTarget:self action:@selector(doit) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:button];

//UICollectionView

UISwitch *mediaSwitch = [[UISwitch alloc] initWithFrame:CGRectMake(SCREEN_WIDTH-100, 50, 50, 50)];

[mediaSwitch addTarget:self action:@selector(changeMediaType:) forControlEvents:UIControlEventValueChanged];

[self.view addSubview:mediaSwitch];

imageView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 150, 100, 100)];

[self.view addSubview:imageView];

showTypeLable = [[UILabel alloc] initWithFrame:CGRectMake(CGRectGetMinX(mediaSwitch.frame), CGRectGetMinY(mediaSwitch.frame)-30, 50, 20)];

showTypeLable.textAlignment = NSTextAlignmentCenter;

showTypeLable.textColor = [UIColor colorWithRed:0.0078 green:0.6396 blue:1.0 alpha:1.0];

showTypeLable.text = @"拍照";

[self.view addSubview:showTypeLable];

}

-(void)changeMediaType:(UISwitch *)sender{

showTypeLable.text = sender.isOn!=YES?@"拍照":@"录像";

if (isMovie==YES) {

// 设置录像 默认拍照----要先选择媒体的类型

// ＊＊＊＊＊＊＊不然会崩溃

pickcontroller.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;

}

}

-(void)doit{

pickcontroller = [[UIImagePickerController alloc]init];

// 选择摄像头设备

// 默认的是相册

pickcontroller.sourceType = UIImagePickerControllerSourceTypeCamera;

[self presentViewController:pickcontroller animated:YES completion:nil];

// 选择媒体类型

// 拍照的时候不选择媒体类型 不会奔溃 是因为默认设置是KUTTypeImage；

// MobileCoreServices这个框架中需要的不是oc需要的字符串类型 需要强制转换

// pickcontroller.mediaTypes =@[(NSString *)kUTTypeImage];

pickcontroller.delegate = self;

// 设置录像 默认拍照----要先选择媒体的类型

// ＊＊＊＊＊＊＊不然会崩溃

pickcontroller.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;

}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{

if ([info [UIImagePickerControllerMediaType]isEqualToString:(NSString *)kUTTypeMovie]) {

NSLog(@"w拍完了");

NSLog(@"====%@",info);

// 视频保存到相册之后调用

UISaveVideoAtPathToSavedPhotosAlbum(info[UIImagePickerControllerMediaURL], self, @selector(video:didFinishSavingWithError:contextInfo:), nil);

UIImage *finashImage = info[UIImagePickerControllerOriginalImage];

imageView.image = nil;

imageView.image =finashImage;

// NSData *imageData =UIImageJPEGRepresentation(finashImage, 0.1); //传二进制图片进服务器

// UIImagePNGRepresentation(finashImage);// 传png格式的照片进服务器

// 把图片保存到相册

UIImageWriteToSavedPhotosAlbum(finashImage, self, @selector(image: didFinishSavingWithError:contextInfo:), nil);

}

}

//保存照片成功 回调方法

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{

NSLog(@"保存成功");

}

//保存视频成功 回调方法

- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo{

AVPlayer *player = [AVPlayer playerWithURL:[NSURL fileURLWithPath:videoPath]];

AVPlayerViewController *avplayercon = [[AVPlayerViewController alloc]init];

avplayercon.player = player;

[self presentViewController:avplayercon animated:YES completion:nil];

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{

NSLog(@"取消");

[self dismissViewControllerAnimated:YES completion:nil];

}