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
第一次写简书，别打那么惨号码？
