iOS 拍照及获取相册图片功能

@interfaceViewController ()@end@implementation ViewController{ UIAlertController * actionSheet; UIImageView *imageview;}- (void)viewDidLoad { [superviewDidLoad]; UIButton *btn = [UIButtonbuttonWithType:UIButtonTypeCustom]; btn.frame = CGRectMake(100, 220, 100, 40); [btn setTitle:@"获取"forState:0];[btn setTitleColor:[UIColor greenColor] forState:0];​ [self.view addSubview:btn]; [btn addTarget:selfaction:@selector(BtnClick) forControlEvents:UIControlEventTouchUpInside]; actionSheet =[UIAlertControlleralertControllerWithTitle:@"选择图像"message:nilpreferredStyle:UIAlertControllerStyleActionSheet]; UIAlertAction *num1=[UIAlertActionactionWithTitle:@"相册"style:UIAlertActionStyleDefaulthandler:^(UIAlertAction * _Nonnull action) { NSLog(@"11111");​ UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init]; imagePickerController.delegate = self; imagePickerController.allowsEditing = YES; imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; [selfpresentViewController:imagePickerController animated:YEScompletion:^{ NSLog(@"进入相册"); }]; }]; UIAlertAction *num2=[UIAlertActionactionWithTitle:@"拍照"style:0handler:^(UIAlertAction * _Nonnull action) { NSLog(@"222222"); if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]​ { UIImagePickerController *imagePickerController = [[UIImagePickerControlleralloc] init]; imagePickerController.delegate = self; imagePickerController.allowsEditing = YES; imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; [selfpresentViewController:imagePickerController animated:YEScompletion:^{ NSLog(@"进入相机"); }]; }else { UIAlertView *aa=[[UIAlertViewalloc] initWithTitle:@"温馨提示"message:@"操作警告"delegate:selfcancelButtonTitle:nilotherButtonTitles:@"不支持相机", nil]; [aa show]; } }]; UIAlertAction *num3=[UIAlertActionactionWithTitle:@"取消"style:1handler:^(UIAlertAction * _Nonnull action) { NSLog(@"333333"); }]; [actionSheetaddAction:num1]; [actionSheetaddAction:num2]; [actionSheetaddAction:num3]; imageview = [[UIImageViewalloc] initWithFrame:CGRectMake(100, 100, 100, 100)]; imageview.image = nil; [self.viewaddSubview:imageview];}- (void)BtnClick{ [selfpresentViewController:actionSheetanimated:YEScompletion:nil];}- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ [picker dismissViewControllerAnimated:YEScompletion:^{ }]; UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage]; NSLog(@"image:%@",image); imageview.image = image;} @interfaceViewController ()@end@implementation