iOS 相机、相册调用

这是我自己写的一个相机相册调用分类。使用起来挺方便的。直接上代码吧。

调用方法:

#import "UIViewController+ImagePickerAndCamera.h"

//在需要调用相机相册的地方使用这个方法即可

[self createActionSheetForChooseImage:^(UIImage *image) {

//在这里处理图片

}];

源码:

#import@interface UIViewController (ImagePickerAndCamera)@property (nonatomic, copy) void (^CompleteBlock)(UIImage*);

// 创建弹出框来选择图片(相机相册两种方式)

- (void)createActionSheetForChooseImage:(void(^)(UIImage *))completeBlock;

@end


#import "UIViewController+ImagePickerAndCamera.h"#import#import "UIImage+UIImageExt.h"#import#importconst void * associateKey = @"ImagePickerAndCameraAssociateKey";

@implementation UIViewController (ImagePickerAndCamera)

- (void)setCompleteBlock:(void (^)(UIImage *))CompleteBlock{

objc_setAssociatedObject(self, associateKey, CompleteBlock, OBJC_ASSOCIATION_COPY_NONATOMIC);

}

- (void(^)(UIImage*))CompleteBlock{

return  objc_getAssociatedObject(self, associateKey);

}

// 创建弹出框来选择图片(相机相册两种方式)

- (void)createActionSheetForChooseImage:(void(^)(UIImage *))completeBlock{

UIAlertController *alertCtrl = [UIAlertController alertControllerWithTitle:@"提示" message:@"请选择下列两种方式的一种修改头像" preferredStyle:UIAlertControllerStyleActionSheet];

__weak typeof(self) weakSelf = self;

[alertCtrl addAction:[UIAlertAction actionWithTitle:@"相册" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

[weakSelf localPhoto];

}]];

[alertCtrl addAction:[UIAlertAction actionWithTitle:@"拍摄" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

[weakSelf takePhoto];

}]];

[alertCtrl addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];

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

self.CompleteBlock = [completeBlock copy];

}

// 打开相机

- (void)takePhoto{

UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;

if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera])

{

AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];

if (authStatus == AVAuthorizationStatusAuthorized || authStatus == AVAuthorizationStatusNotDetermined) {

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

picker.delegate = self;

//设置拍照后的图片可被编辑

picker.allowsEditing = YES;

picker.sourceType = sourceType;

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

}

else{

UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"请前往设置开启拍摄权限" message:@"没有拍摄权限,无法调用拍照功能" delegate:self cancelButtonTitle:@"不了" otherButtonTitles:@"好的", nil];

alert.tag = 10;

[alert show];

}

}

else

{

}

}

// 打开本地相册

- (void)localPhoto{

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

picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypePhotoLibrary])

{

ALAuthorizationStatus authStatus = [ALAssetsLibrary authorizationStatus];

if (authStatus == ALAuthorizationStatusAuthorized  || authStatus == ALAuthorizationStatusNotDetermined) {

picker.delegate = self;

//设置选择后的图片可被编辑

picker.allowsEditing = YES;

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

}

else{

UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"请前往设置开启相册权限" message:@"没有相册权限,无法调用相册功能" delegate:self cancelButtonTitle:@"不了" otherButtonTitles:@"好的", nil];

alert.tag = 10;

[alert show];

}

}

else{

}

}

//当选择一张图片后进入这里

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

{

NSString *type = [info objectForKey:UIImagePickerControllerMediaType];

//当选择的类型是图片

if ([type isEqualToString:@"public.image"])

{

//先把图片转成NSData

UIImage* image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

NSData *data;

if (UIImageJPEGRepresentation(image,0.3) != nil)

{

data = UIImageJPEGRepresentation(image, 0.3);

}

else

{

data = UIImagePNGRepresentation(image);

}

image = [UIImage imageWithData:data];

UIImage *image1 = [image imageByScalingAndCroppingForSize:CGSizeMake(300, 300)];

//关闭相册界面

[picker dismissViewControllerAnimated:YES completion:nil];

self.CompleteBlock(image1);

}

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

[picker dismissViewControllerAnimated:YES completion:nil];

}

@end


第一次写,别打那么惨号码?

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