Question

我有一个旧的代码工作，我没有最终使用...现在我再次尝试它，它不起作用。我不确定有什么问题。我希望用户选择一个图像，然后在imageView1中显示它。我很感激你的帮助。

- (IBAction)pushPick 
{
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate =self;
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [self presentModalViewController:picker animated:YES];
    //[picker release];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:   (UIImage *)image editingInfo:(NSDictionary *)editingInfo {
    [picker.parentViewController dismissModalViewControllerAnimated:YES];
    imageView1.image = image;
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    [picker.parentViewController dismissModalViewControllerAnimated:YES];
}

Answer 1

尝试

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{  
    UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
    imageView1.image = image;
    [picker release];
    [self dismissModalViewControllerAnimated:YES]; 

}

确保视图控制器响应UIImagePickerControllerDelegate。

imagePickerController：didFinishPickingImage：editingInfo：在iOS 3.0中已弃用。

Answer 2

我就是这样做的：

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

{ bgImage.image = [info objectForKey：UIImagePickerControllerEditedImage];

UIGraphicsBeginImageContextWithOptions(CGSizeMake(128, 128), YES, 1.0);

[bgImage.image drawInRect:CGRectMake(0,0,128,128)];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

NSData *imageData = UIImageJPEGRepresentation(newImage, 1.0);
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *documentsFolder = [path objectAtIndex:0];

NSString *tmpPathToFile = [[NSString alloc] initWithString:[NSString stringWithFormat:@"%@/specificImagedName.jpg", documentsFolder]];

if([imageData writeToFile:tmpPathToFile atomically:YES]){
    //NSLog(@"write succesful");
}
///////////////////////////////////////////

[po dismissPopoverAnimated:YES];
[picker release];
[tmpPathToFile release];}

它会在您应用的文档文件夹中生成一个jpg文件。希望它有所帮助..

UIImagepickercontroller不选择图像

2 个答案: