ios最新调用手机相册选取头像(UIActionSheet过期)

由于

UIActionSheet过期所以可以使用如下调用手机相册

前提不要忘记添加代理如下两个

UIImagePickerControllerDelegate,UINavigationControllerDelegate

还需要去plist文件里面添加相机相册权限否则要崩溃的哟

//更换头像

- (IBAction)changeHeadIM:(id)sender {

//创建UIImagePickerController对象，并设置代理和可编辑

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

imagePicker.editing = YES;

imagePicker.delegate = self;

imagePicker.allowsEditing = YES;

//创建sheet提示框，提示选择相机还是相册

UIAlertController * alert = [UIAlertController alertControllerWithTitle:@"请选择打开方式" message:nil preferredStyle:UIAlertControllerStyleActionSheet];

//相机选项

UIAlertAction * camera = [UIAlertAction actionWithTitle:@"相机" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

//选择相机时，设置UIImagePickerController对象相关属性

imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;

imagePicker.modalPresentationStyle = UIModalPresentationFullScreen;

imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;

//跳转到UIImagePickerController控制器弹出相机

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

}];

//相册选项

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

//选择相册时，设置UIImagePickerController对象相关属性

imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

//跳转到UIImagePickerController控制器弹出相册

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

}];

//取消按钮

UIAlertAction * cancel = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {

[self dismissViewControllerAnimated:YES completion:nil];

}];

//添加各个按钮事件

[alert addAction:camera];

[alert addAction:photo];

[alert addAction:cancel];

//弹出sheet提示框

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

}

#pragma mark - image picker delegte

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

{

[picker dismissViewControllerAnimated:YES completion:^{}];

UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

//    //原图用image.size.width  /  image.size.height

//    //压缩

//    UIGraphicsBeginImageContext(CGSizeMake(800, 600));  //size 为CGSize类型，即你所需要的图片尺寸

//    [image drawInRect:CGRectMake(0, 0, 800, 600)];

//    UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext();

//    UIGraphicsEndImageContext();

float  scales = image.size.height / image.size.width;

UIImage *normalImg;

//如果需要改动被压大小，调整scale，而不是kk或aa

if (image.size.width > 600 || image.size.height > 800) {//这里的1000就是scale，所有的都要随着改变

if (scales > 1) {

CGSize newSize = CGSizeMake(600 / scales, 800);

UIGraphicsBeginImageContext(newSize);

[image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];

normalImg = UIGraphicsGetImageFromCurrentImageContext();

}else {

CGSize newSize = CGSizeMake(600 ,800 * scales);

UIGraphicsBeginImageContext(newSize);

[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];

normalImg = UIGraphicsGetImageFromCurrentImageContext();

}

}else {

normalImg=image;

}

NSData *data = UIImagePNGRepresentation(normalImg);

self.editHeadIM.image = normalImg;

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

[self dismissViewControllerAnimated:YES completion:^{}];

}