Question

我正在开发一个需要用户为他上传照片的应用程序，使用iphone，我该如何实现这一点：当点击我个人信息页面中的图像时，图库会打开以选择照片。当选择照片时，它必须出现而不是前一张照片（首先它是默认的照片）。请注意，此照片的路径或照片本身（我不知道）必须存储在DataBase中以便下次登录。此外，必须将此照片传输到服务器，以便在同一用户登录网站时显示在网站上。

我使用以下代码完成，我可以选择一张照片，但是当我保存路径时，我无法再次加载图片。这是一个白色的盒子！没有照片!!

-(void) pickPhoto
{
    UIImagePickerController *picker ;
    picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;

    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
    {
        picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    }
    else
    {
        picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
    }
    [self presentViewController:picker animated:YES completion:nil];
}

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

UIImage *img = [info objectForKey:UIImagePickerControllerEditedImage];

if(!img)
    img = [info objectForKey:UIImagePickerControllerOriginalImage];


NSString *docDirPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *filePath =  [docDirPath stringByAppendingPathComponent:@"myImage.png"];
NSLog (@"File Path = %@", filePath);


UIButton *btn = (UIButton *)[self.tableView viewWithTag:2013];
[btn setBackgroundImage:img forState:UIControlStateNormal];

database= [[connectToDB alloc] init];
[database setDelegate:self];
[database saveUserPic:filePath ForUser:user.userId];
[self dismissViewControllerAnimated:YES completion:nil];


}

现在加载pic：

UIImage *img;
if(pic != nil)
     img=[UIImage imageWithContentsOfFile:pic];
else
     img= [UIImage imageNamed:@"business_userL.png"];

任何帮助将不胜感激。！

Answer 1

UIImagePickerControllerReferenceURL将返回对所选图片的本地存储空间的引用。

NSURL* localUrl = (NSURL *)[info valueForKey:UIImagePickerControllerReferenceURL];

现在您可以将此网址保存在数据库中。

要检索图像：display image from URL retrieved from ALAsset in iPhone

从我的iphone库上传照片

1 个答案: