UIImagePickerController的一些属性（调照相机或者图片）

最新推荐文章于 2023-11-26 20:54:07 发布

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最新推荐文章于 2023-11-26 20:54:07 发布

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分类专栏：基本控件的使用

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这篇博客介绍了如何在iOS应用中使用UIImagePickerController来调用相机和相册。通过导入MobileCoreServices框架，遵循UINavigationControllerDelegate和UIImagePickerControllerDelegate协议，设置sourceType属性，可以实现相机拍照和相册选择图片的功能。在选择完成后，可以通过UIImagePickerControllerDelegate协议的方法处理所选的媒体资源。

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1.wpc

1.导框架

添加系统框架

MobileCoreServices.framework

头文件

#import <MobileCoreServices/MobileCoreServices.h>

遵守的协议

<UINavigationControllerDelegate,UIImagePickerControllerDelegate

2.方法

#pragma mark - 点击事件

-(void)btnClick:(UIButton *)btn{

//UIImagePickerController:里面封装好了调用相机和相册的逻辑，可直接使用。

UIImagePickerController *pc = [[UIImagePickerController alloc]init];

pc.delegate = self;

if (btn.tag == 100) {

//拍照

//设置资源类型 --> 先要检测要设置的资源类型是否可用

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

[pc setSourceType:UIImagePickerControllerSourceTypeCamera];

//根据开发习惯，UIImagePickerController以present的方式出现

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

[pc release];

}

else{

UIAlertView *av = [[UIAlertView alloc]initWithTitle:@"提示" message:@"相机不可用" delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];

[av show];

}

else{

//相册选择

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {

[pc setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];

//设置允许编辑

pc.allowsEditing = YES;

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

[pc release];

}

else{

UIAlertView *av = [[UIAlertView alloc]initWithTitle:@"提示" message:@"无法访问相册" delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];

[av show];

}

#pragma mark - UIImagePickerControllerDelegate相关

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{

//选择完成 --> 判断选择完的资源是image还是media

NSString *str = [info objectForKey:UIImagePickerControllerMediaType];

if ([str isEqualToString:(NSString *)kUTTypeImage]) {

//如果取到的资源是image --> 把image显示在_photoIv上

//UIImagePickerControllerEditedImage:编辑后的照片

//UIImagePickerControllerOriginalImage:原图

UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];

_photoIv.image = image;

[self dismissViewControllerAnimated:YES completion:nil];

}

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

NSLog(@"cancel");

}

2.xl

1.导框架

添加系统框架

MobileCoreServices.framework

遵守的协议

UINavigationControllerDelegate,UIActionSheetDelegate

2.方法

//actionSheet协议中的方法,点击跳转到相册

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{

if (buttonIndex==2) {

//获取相册

UIImagePickerController *picker=[[UIImagePickerController alloc]init];

[picker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];//相册中获取

picker.delegate=self;

//跳转到相册界面

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

}