iOS 设置个人头像

初学者干货：

在使用app时，从相册中选取图片作为头像是很常用的操作。

1、首先打开相册选择图片，

2、然后将图片保存至本应用的document，

3、最后将document中图片的路径保存至NSUserDefaults和服务器。

 

1. //从相册中选取图片或拍照 
2. - (void)btnActionForEditPortrait:(id) sender { 
3.     UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
4.     picker.delegate = self; 
5.     picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
6.     picker.allowsEditing = YES; 
7.     [self presentViewController:picker animated:YES completion:NULL]; 
8. } 
9.  
10. - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { 
11.      
12.     _avatar = info[UIImagePickerControllerOriginalImage]; 
13.  
14.     [self saveImage:_avatar WithName:@"userAvatar"]; 
15.  
16.     //处理完毕，回到个人信息页面 
17.     [picker dismissViewControllerAnimated:YES completion:NULL]; 
18.     [_tableView reloadData]; 
19. } 

 

1. //保存图片 
2. - (void)saveImage:(UIImage *)tempImage WithName:(NSString *)imageName 
3. { 
4.     NSData* imageData = UIImagePNGRepresentation(tempImage); 
5.     NSString* documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES) objectAtIndex:0]; 
6.     NSString* totalPath = [documentPath stringByAppendingPathComponent:imageName]; 
7.      
8.     //保存到 document 
9.     [imageData writeToFile:totalPath atomically:NO]; 
10.      
11.     //保存到 NSUserDefaults 
12.     NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults]; 
13.     [userDefaults setObject:totalPath forKey:@"avatar"]; 
14.      
15.     //上传服务器 
16.     [[HSLoginClass new] uploadAvatar:totalPath]; 
17. } 
18.  
19. //从document取得图片 
20. - (UIImage *)getImage:(NSString *)urlStr 
21. { 
22.     return [UIImage imageWithContentsOfFile:urlStr]; 
23. }