Question

我正在尝试为使用imagePicker拍摄的图像添加叠加效果，例如在拍摄过程中显示的帧。我试图使用以下代码：

self.picker = [[UIImagePickerController alloc] init];
self.picker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.picker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
self.picker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
self.picker.showsCameraControls = NO;
self.picker.navigationBarHidden = YES;
self.picker.toolbarHidden = YES;
self.picker.wantsFullScreenLayout = YES;

// Insert the overlay
self.overlay = [[OverlayViewController alloc] initWithNibName:@"Overlay" bundle:nil];
self.overlay.pickerReference = self.picker;
self.picker.cameraOverlayView = self.overlay.view;
self.picker.delegate = self.overlay;

[self presentModalViewController:self.picker animated:NO];

但这有助于更改图像选取器皮肤。如何使用快照添加和处理叠加层？

Answer 1

如果您需要将拍摄的照片与包含图像的另一个UIImageView合并，这是一个有用的片段：

<强> yourFile.h：

UIImage *combinedImage;

<强> yourFile.m：

-(void)savePicture { // call this method from an IBAction button

        // Crop a Combined Image from the taken picture
        CGRect rect = [_imagePreview bounds];
        UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f);


     // Render both images, the captured one from the camera and the UIImageView that is over that picture
    [__myCapturedImage.layer renderInContext:UIGraphicsGetCurrentContext()];
    [_overlayImageView.layer renderInContext:UIGraphicsGetCurrentContext()];

        combinedImage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

        _myCapturedImage.image = combinedImage;


  // Automatically Save the Image into Photo Album (if you want to do so)
    UIImageWriteToSavedPhotosAlbum(combinedImage, nil, nil, nil);

}

希望这有帮助！

PS：我们制作了一个很好的模板，实际上处理覆盖图像（图像周围的帧）：http://codecanyon.net/item/picshape-frame-image-editor-full-app-template/7852895?ref=fvimagination

干杯！

如何在iOS中为图像选择器添加叠加层

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