UIImagepickercontroller 不选择图像答案

【问题标题】：UIImagepickercontroller Not Selecting ImageUIImagepickercontroller 不选择图像
【发布时间】：2012-03-23 23:37:27
【问题描述】：

我在一个我最终没有使用的旧代码中运行了这个......现在我再次尝试它，但它不工作。我不确定出了什么问题。我希望用户选择一个图像，然后在 imageView1 中显示它。我感谢您的帮助。

- (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];
}

【问题讨论】：

标签： ios xcode uiimagepickercontroller

【解决方案1】：

试试

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

}

并确保视图控制器响应 UIImagePickerControllerDelegate。

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

【讨论】：

UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];似乎做到了...谢谢。

【解决方案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];}

它会在您的应用程序的文档文件夹中生成一个 jpg 文件。希望对你有帮助。。

【讨论】：