Question

我试图通过按下按钮捕获图片，该按钮是自定义相机覆盖的一部分。我将每个捕获的图片保存到照片库中的相册中。然后在触摸另一个按钮时，用户可以查看画廊视图中的所有图片。一切正常，但是当快速连续触摸按钮时，我收到以下错误：

UIImagePickerController：忽略拍照请求;相机是尚未准备好

这是代码

//Capture image on custom buton click
- (IBAction)captureImage:(id)sender {



[_photoSharingImagePicker takePicture];
    //_btnTakePicture.enabled = false;
}

UIImage *editedImage, *originalImage, *imageToSave;

        NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

        if(CFStringCompare((CFStringRef) mediaType, kUTTypeImage, 0) == kCFCompareEqualTo)
        {
            editedImage = (UIImage *) [info objectForKey:
                                       UIImagePickerControllerEditedImage];
            originalImage = (UIImage *) [info objectForKey:
                                         UIImagePickerControllerOriginalImage];


            // Resizing and setting image to goto gallery button
            CGSize imageSize     = _btnGotoGallery.frame.size;
            UIGraphicsBeginImageContext(imageSize);
            CGRect imageRect     = CGRectMake(0.0, 0.0, imageSize.width, imageSize.height);
            [originalImage drawInRect:imageRect];
            editedImage = UIGraphicsGetImageFromCurrentImageContext();
            UIGraphicsEndImageContext();
            [_btnGotoGallery setBackgroundImage:editedImage forState:UIControlStateNormal];
            imageToSave = originalImage;

        }

        // Save the new image (original or edited) to the Camera Roll
        //Need user permission for photos
        //UIImageWriteToSavedPhotosAlbum (imageToSave, self, @selector(image:didFinishSavingWithError:contextInfo:) , nil);

        //Save image in an album with the app's name
        _assetsLibrary = [[ALAssetsLibrary alloc] init];
        [_assetsLibrary saveImage:imageToSave toAlbum:@"DTE" withCompletionBlock:^(NSError *error) {
            if (error!=nil) {
                DLog(@"Big error: %@", [error description]);
            }
        }];

有时我得到的是黑色图像我该如何防止这种情况？

使用UIImagePicker快速拍摄多张照片

0 个答案: