自定义UIImagePickerController的拍照页面（二）

以前，写过一篇：自定义UIImagePickerController的拍照页面，这篇文章的实现方式与此不同，在开始之前，先来看一下下面这张图：

上图对接下来的代码理解会很有帮助，红色的高亮部分是从屏幕上看到的照片的预览图，除了这个之外，他上面的view都可以去掉。

 

要想编辑这些View，需要先找到他们，这里给出了这个方法：

 

- (UIView *)findView:(UIView *)aView withName:(NSString *)name {
	Class cl = [aView class];
	NSString *desc = [cl description];
	
	if ([name isEqualToString:desc])
		return aView;
	
	for (NSUInteger i = 0; i < [aView.subviews count]; i++) {
		UIView *subView = [aView.subviews objectAtIndex:i];
		subView = [self findView:subView withName:name];
		if (subView)
			return subView;
	}
	return nil;	
}

 

下面的这段代码给出了比较详细的使用示例：

 

- (void)addSomeElements:(UIViewController *)viewController {
	//Add the motion view here, PLCameraView and picker.view are both OK
	UIView *PLCameraView=[self findView:viewController.view withName:@"PLCameraView"];
	[PLCameraView addSubview:touchView];//[viewController.view addSubview:self.touchView];//You can also try this one.
	
	//Add button for Timer capture
	[PLCameraView addSubview:timerButton];
	[PLCameraView addSubview:continuousButton];
	
	[PLCameraView insertSubview:bottomBarImageView atIndex:1];
	
	//Used to hide the transiton, last added view will be the topest layer
	[PLCameraView addSubview:myTransitionView];
	
	//Add label to cropOverlay
	UIView *cropOverlay=[self findView:PLCameraView withName:@"PLCropOverlay"];
	[cropOverlay addSubview:lblWatermark];
	
	//Get Bottom Bar
	UIView *bottomBar=[self findView:PLCameraView withName:@"PLCropOverlayBottomBar"];
	
	//Get ImageView For Save
	UIImageView *bottomBarImageForSave = [bottomBar.subviews objectAtIndex:0];
	
	//Get Button 0
	UIButton *retakeButton=[bottomBarImageForSave.subviews objectAtIndex:0];
	[retakeButton setTitle:@"重拍" forState:UIControlStateNormal];
	
	//Get Button 1
	UIButton *useButton=[bottomBarImageForSave.subviews objectAtIndex:1];
	[useButton setTitle:@"保存" forState:UIControlStateNormal];
	
	//Get ImageView For Camera
	UIImageView *bottomBarImageForCamera = [bottomBar.subviews objectAtIndex:1];
	
	//Set Bottom Bar Image
	UIImage *image=[[UIImage alloc] initWithContentsOfFile:[[[NSBundle mainBundle] bundlePath] stringByAppendingPathComponent:@"BottomBar.png"]];
	bottomBarImageForCamera.image=image;
	[image release];
	
	//Get Button 0(The Capture Button)
	UIButton *cameraButton=[bottomBarImageForCamera.subviews objectAtIndex:0];
	[cameraButton addTarget:self action:@selector(hideTouchView) forControlEvents:UIControlEventTouchUpInside];
	
	//Get Button 1
	UIButton *cancelButton=[bottomBarImageForCamera.subviews objectAtIndex:1];	
	[cancelButton setTitle:@"取消" forState:UIControlStateNormal];
	[cancelButton addTarget:self action:@selector(hideTouchView) forControlEvents:UIControlEventTouchUpInside];
}