24.用户头像的设置(详细讲解)

1.挂代理<UINavigationControllerDelegate,UIImagePickerControllerDelegate>

2.点击用户的头像调用下面

 UIAlertController *alertController = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet];

/**
 *  从手机选择
 *
 */
[alertController addAction:[UIAlertAction actionWithTitle:@"从手机选择" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
    
    NSLog(@"从手机选择");
    //从现有的照片库选择图片, 选择范围仅限最近的相册
    //UIImagePickerControllerSourceTypePhotoLiabrary 从现有的照片库中取出图片
    //UIImagePickerControllerSourceTypePhotoLibrary 从现有的照片库选择图片, 选择范围仅限最近的相册
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
    {
        UIImagePickerController *pickerCon = [[UIImagePickerController alloc] init];
        
        pickerCon.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        pickerCon.allowsEditing = YES;
        pickerCon.delegate = self;
        [self presentViewController:pickerCon animated:YES completion:nil];
    } else
        
    {
       UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"温馨提示" message:@"您的手机没有照相机" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil];
       [alert show];
       [alert release];
    }
    
}]];

/**
 *  拍照
 *
 */
[alertController addAction:[UIAlertAction actionWithTitle:@"拍照" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
    
    NSLog(@"拍照");
    
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        
        UIImagePickerController *pickerCon = [[UIImagePickerController alloc] init];
        pickerCon.sourceType = UIImagePickerControllerSourceTypeCamera;
        pickerCon.allowsEditing = YES;
        pickerCon.delegate = self;
        pickerCon.videoQuality = UIImagePickerControllerQualityTypeMedium;
        [self presentViewController:pickerCon animated:YES completion:nil];
        
    } else
    {
         UIAlertController *alertController1 = [UIAlertController alertControllerWithTitle:@"温馨提示" message:@"您的手机没有照相机" preferredStyle:UIAlertControllerStyleAlert];
        
        [alertController1 addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
            
            NSLog(@"返回");
            
        }]];
        
        [self presentViewController:alertController1 animated:YES completion:nil];

    }
}]];

/**
 *  取消
 *
 */
[alertController addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
    
    NSLog(@"取消");
    
}]];

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

3.回调
编辑完回调
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info {

//UIImagePickerControllerOriginalImage 原始图片
//UIImagePickerControllerEditedImage 编辑过的图片
UIImage *image= [info objectForKey:@"UIImagePickerControllerOriginalImage"];

[picker dismissViewControllerAnimated:YES completion:^{
    
    [_dianji setBackgroundImage:image forState:UIControlStateNormal];
    
   }];

}

4.相机拍照或者选择图片取消

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

   [picker dismissViewControllerAnimated:YES completion:NULL];

}

提示:1.如果你的下面是英文,那么您需要在info.plist里面添加:Localized resources can be mixed 选择 YES（表示是否允许应用程序获取框架库内语言）

改中文

2.一般用户的头像选择完我们是要进行上传的

获取相机选择后图片的URL名字

NSURL *imageURL = [info valueForKey:@"UIImagePickerControllerReferenceURL"];

如果图片上传就调用

/*
NSURL *imageURL = [info valueForKey:@"UIImagePickerControllerReferenceURL"];

NSCharacterSet* delimiterSet = [NSCharacterSet characterSetWithCharactersInString:@"&;"];
NSMutableDictionary* pairs = [NSMutableDictionary dictionary];
NSScanner* scanner = [[NSScanner alloc] initWithString:[imageURL query]];
while (![scanner isAtEnd]) {
    NSString* pairString = nil;
    [scanner scanUpToCharactersFromSet:delimiterSet intoString:&pairString];
    [scanner scanCharactersFromSet:delimiterSet intoString:NULL];
    NSArray* kvPair = [pairString componentsSeparatedByString:@"="];
    if (kvPair.count == 2) {
        NSString* key = [[kvPair objectAtIndex:0]
                         stringByReplacingPercentEscapesUsingEncoding:@"UTF-8"];
        NSString* value = [[kvPair objectAtIndex:1]
                           stringByReplacingPercentEscapesUsingEncoding:@"UTF-8"];
        [pairs setObject:value forKey:key];
    }
}

self.imgExt = [pairs objectForKey:@"ext"];
if (self.imgExt == nil || self.imgExt.length < 1) {
    self.imgExt = @"jpg";
}
self.myICO = [self imageWithImageSimple:image scaledToSize:CGSizeMake(440.0, 330.0)];
[self.iconBtn setImage:self.myICO forState:UIControlStateNormal];

[self upImage:@"头像上传中。。。。" upType:5];
 
 */

补充:有关相册的两个框架

 import <MobileCoreServices/UTCoreTypes.h>
 #import <AssetsLibrary/ALAsset.h>

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头像xiaodemo 密码:5ubh