Question

我在iPhone中动态创建按钮，但我想在iPhone中设置画廊的背景。现在我想知道如何从iPhone中的图库中获取图像。

Answer 1

-(IBAction)btnSelectPhotoClick:(id)sender{
if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypePhotoLibrary]) { 
    UIImagePickerController *picker = [[UIImagePickerController alloc] init]; 
    picker.delegate = self; 
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
    [self presentModalViewController:picker animated:YES];
    [picker release];       
}   
else {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:@"Photo Library Does Not Exist"
                                                   delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
    [alert show];    
    [alert release];
}
}
 - (void)imagePickerController:(UIImagePickerController *)picker 
    didFinishPickingImage:(UIImage *)image 
              editingInfo:(NSDictionary *)editingInfo { 
// set it in image view
imageview.image = image;

// If it's from camera, save it!
if (picker.sourceType == UIImagePickerControllerSourceTypeCamera){
    UIImageWriteToSavedPhotosAlbum(image,nil,nil,nil);
}

  [picker dismissModalViewControllerAnimated:YES]; 
  } 

  // Catch when it's canceled
  - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {     
  [picker dismissModalViewControllerAnimated:YES]; 
   }

希望如果您有任何疑问，请告诉我，这将对您有所帮助。谢谢

Answer 2

如果您有机会为用户选择图像，那么UIImagePickerController将非常有用。有关详情，请使用此网址http://blog.hanpo.tw/2012/01/uiimagepickercontroller-and-simple.html

Answer 3

你可以从这样的图库中获取图像

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

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

了解更多信息--- http://developer.apple.com/library/ios/#documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html

如何在iphone的画廊中设置Uibutton的backGround

3 个答案: