iOS 拍照及获取相册图片功能_ios 读取相册和拍照-优快云博客

本文提供了一个简单的iOS应用示例，展示如何实现从相册选取和使用相机拍照获取图片的功能。通过创建UIAlertController弹窗，用户可以选择相册或相机，并在选择图片后显示在UIImageView上。

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不说话，直接上个例子，很简单哦

@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;

}