摘自：http://www.cnblogs.com/goodboy-heyang/p/5403947.html

前言：本篇博文是本人閱讀國外的IOS Programming Tutorial的一篇入門文章的學習過程總結，難度不大，因為是入門。主要是入門UIImagePickerController這個控制器，那么這個 控制器是干嘛的呢？就是調用設備攝像機功能用的。到后面可能需要您在真機上測試，因為iPhone模擬器無法支持攝像機功能，運行測試會崩潰的哦。

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網址：http://www.appcoda.com/ios-programming-camera-iphone-app/

1、首先簡單的創建一個工程，然后在storyboard和對應的.m文件中添加相關的代碼，這個簡明教程沒有使用自動布局，不多說，看圖識字：

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2、下面是這個ViewController.m的完整實現：

#import "ViewController.h"@interface ViewController () <UIImagePickerControllerDelegate,UINavigationControllerDelegate>@property (strong, nonatomic) IBOutlet UIImageView *imageView;@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];// 這段代碼會自動判斷當前設備是否有攝像機功能，如果沒有，會彈窗提示if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@"Error"message:@"Device has no camera"delegate:nilcancelButtonTitle:@"OK"otherButtonTitles: nil];[myAlertView show];} } - (IBAction)takePhotot:(UIButton *)sender {// 創建UIImagePickerController控制器對象UIImagePickerController *picker = [[UIImagePickerController alloc] init];picker.delegate = self;picker.allowsEditing = YES;picker.sourceType = UIImagePickerControllerSourceTypeCamera;[self presentViewController:picker animated:YES completion:nil]; } - (IBAction)selectPhoto:(UIButton *)sender {// 創建UIImagePickerController控制器對象UIImagePickerController *picker = [[UIImagePickerController alloc] init];picker.delegate = self;picker.allowsEditing = YES;picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;[self presentViewController:picker animated:YES completion:nil]; } #pragma mark - 代理方法 -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{UIImage* chosenImage = info[UIImagePickerControllerEditedImage];self.imageView.image = chosenImage;[picker dismissViewControllerAnimated:YES completion:nil]; } -(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{[picker dismissViewControllerAnimated:YES completion:nil]; }@end

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轉載于:https://www.cnblogs.com/Lucky-056150/p/5404271.html

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