编辑 3
好消息和坏消息。好消息是，在连接检查器中，通过断开覆盖 UIToolbar 并连接 UIImageview，我看到了 theKing ，但是——坏消息——我没有看到 UIToolbar，我也需要它。所以现在的问题是，当他/她在这里完成时，用户如何回到调用的VC？工具栏和图像如何成为覆盖的一部分，或者“返回按钮”工具栏可以在非覆盖 View 上，还是其他什么？或者如何在 OverlayViewController 上同时显示工具栏和图像？
编辑 3
编辑 2 setupImagePicker 中的 OverlayViewController.m 。
- (void)setupImagePicker:(UIImagePickerControllerSourceType)sourceType
{
self.imagePickerController.sourceType = sourceType;
if (sourceType == UIImagePickerControllerSourceTypeCamera)
{
// user wants to use the camera interface
//
self.imagePickerController.showsCameraControls = NO;
if ([[self.imagePickerController.cameraOverlayView subviews] count] == 0)
{
// setup our custom overlay view for the camera
//
// ensure that our custom view's frame fits within the parent frame
CGRect overlayViewFrame = self.imagePickerController.cameraOverlayView.frame;
CGRect newFrame = CGRectMake(0.0,
CGRectGetHeight(overlayViewFrame) -
self.view.frame.size.height - 10.0,
CGRectGetWidth(overlayViewFrame),
self.view.frame.size.height + 10.0);
self.view.frame = newFrame;
[self.imagePickerController.cameraOverlayView addSubview:self.view];
}
}
}
编辑 2
编辑 1
This is the PhotoPicker sample code link 。
编辑 1
编辑 0
有没有人在 iPhone 而不是 iPad 上尝试过这个？我没有 iPhone，但我今天正在阅读 Matt Neuburg 的书，他说 UIImagePicker 在 2 个设备上的工作方式不同。
编辑 0
我在 UIImagePicker 中看不到我试图在相机 View 中叠加的图像。无论我如何添加 IBOutlet，无论是否作为属性，图像都不会显示，但覆盖的工具栏显示正常。为什么？
OverlayViewController.h 和
theKing IBOutlet 添加到 Apple 的示例代码中，然后暂时注释掉。#import <UIKit/UIKit.h>
#import <AudioToolbox/AudioServices.h>
@protocol OverlayViewControllerDelegate;
@interface OverlayViewController : UIViewController <UINavigationControllerDelegate, UIImagePickerControllerDelegate>
{
// IBOutlet UIImageView* theKing; ******** temporarily commented out
id <OverlayViewControllerDelegate> delegate;
}
@property (nonatomic, assign) id <OverlayViewControllerDelegate> delegate;
@property (nonatomic, retain) UIImagePickerController *imagePickerController;
- (void)setupImagePicker:(UIImagePickerControllerSourceType)sourceType;
@end
@protocol OverlayViewControllerDelegate
- (void)didTakePicture:(UIImage *)picture;
- (void)didFinishWithCamera;
@end
OverlayViewController.m 与
property 的 theKing IBOutlet 添加到 Apple 的示例代码中。#import "OverlayViewController.h"
enum
{
kOneShot, // user wants to take a delayed single shot
kRepeatingShot // user wants to take repeating shots
};
@interface OverlayViewController ( )
@property (assign) SystemSoundID tickSound;
@property (nonatomic, retain) IBOutlet UIImageView* theKing; // added *********
@property (nonatomic, retain) IBOutlet UIBarButtonItem *takePictureButton;
@property (nonatomic, retain) IBOutlet UIBarButtonItem *startStopButton;
@property (nonatomic, retain) IBOutlet UIBarButtonItem *timedButton;
@property (nonatomic, retain) IBOutlet UIBarButtonItem *cancelButton;
@property (nonatomic, retain) NSTimer *tickTimer;
@property (nonatomic, retain) NSTimer *cameraTimer;
当我在 iPhone 上执行代码时，我看不到图像
theKing。下面是我添加的 Nib View ，显示了一些连接。没有抛出错误，但我看不到图像，只有 UIToolbar 已经添加。 最佳答案
更新
我现在已经更新它并试图复制你在你的问题中所做的。我已经包含了 .h/.m 和 [email protected] 的完整源代码。创建一个新项目并将源粘贴到文件中并添加 [email protected] 。一切都以编程方式完成 - 除了将 View 嵌入到导航 Controller 中之外，您不需要在界面构建器中进行任何设置。
这是 [email protected] - http://i.imgur.com/0DrM7si.png
View Controller .h
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
@end
View Controller .m
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// assign action to button
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
myButton.frame = CGRectMake(0, 0, 200, 60);
myButton.center = self.view.center;
[myButton addTarget:self action:@selector(buttonPress:) forControlEvents:UIControlEventTouchUpInside];
[myButton setTitle:@"Image Picker" forState:UIControlStateNormal];
[self.view addSubview:myButton];
}
- (void)buttonPress:(id)sender {
if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
// alert the user that the camera can't be accessed
UIAlertView *noCameraAlert = [[UIAlertView alloc] initWithTitle:@"No Camera" message:@"Unable to access the camera!" delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil, nil];
[noCameraAlert show];
} else {
// prepare imagePicker view
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.delegate = self;
imagePicker.allowsEditing = NO;
imagePicker.showsCameraControls = NO;
// create view for overlay
CGRect overlayRect = CGRectMake(0, 0, imagePicker.view.frame.size.width, imagePicker.view.frame.size.height);
UIView *overlayView = [[UIView alloc] initWithFrame:overlayRect];
// prepare the image to overlay
UIImageView *overlayImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"theKing"]];
overlayImage.center = overlayView.center;
overlayImage.alpha = 0.5;
// prepare toolbar for overlay
UIToolbar *overlayToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 600, overlayView.frame.size.width, 40)];
overlayToolbar.center = CGPointMake(overlayView.center.x, overlayView.frame.size.height - 20);
overlayToolbar.barStyle = UIBarStyleBlack;
UIBarButtonItem *takePictureButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(takePictureButtonPressed:)];
UIBarButtonItem *flexibleBarSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
flexibleBarSpace.width = 1000;
UIBarButtonItem *startStopButton = [[UIBarButtonItem alloc] initWithTitle:@"Snap" style:UIBarButtonItemStyleBordered target:self action:@selector(startStopButtonPressed:)];
UIBarButtonItem *timedButton = [[UIBarButtonItem alloc]initWithTitle:@"Timed" style:UIBarButtonItemStyleBordered target:self action: @selector(timedButtonPressed:)];
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc]initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action: @selector(cancelButtonPressed:)];
overlayToolbar.items = [NSArray arrayWithObjects:takePictureButton, flexibleBarSpace, startStopButton, timedButton, cancelButton, nil];
[overlayView addSubview:overlayImage];
[overlayView addSubview:overlayToolbar];
// add the image as the overlay
[imagePicker setCameraOverlayView:overlayView];
// display imagePicker
[self.navigationController presentViewController:imagePicker animated:YES completion:nil];
}
}
#pragma mark - UIBarButton Selectors
- (void)takePictureButtonPressed:(id)sender {
NSLog(@"takePictureButtonPressed...");
// TODO: take picture!
}
- (void)startStopButtonPressed:(id)sender {
NSLog(@"startStopButtonPressed...");
// TODO: make this do something
}
- (void)timedButtonPressed:(id)sender {
NSLog(@"timedButtonPressed...");
// TODO: implement timer before calling takePictureButtonPressed
}
- (void)cancelButtonPressed:(id)sender {
NSLog(@"cancelButtonPressed");
[self.navigationController dismissViewControllerAnimated:YES completion:nil];
}
#pragma mark - UIImagePickerController Delegate Methods
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)editingInfo {
// determine if the user selected or took a new photo
UIImage *selectedImage;
if ([editingInfo objectForKey:UIImagePickerControllerOriginalImage]) selectedImage = (UIImage *)[editingInfo objectForKey:UIImagePickerControllerOriginalImage];
else if ([editingInfo objectForKey:UIImagePickerControllerEditedImage]) selectedImage = (UIImage *)[editingInfo objectForKey:UIImagePickerControllerEditedImage];
// TODO: Do something with selectedImage (put it in a UIImageView
// dismiss the imagePicker
[picker.presentingViewController dismissViewControllerAnimated:YES completion:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
截屏
这是我运行时的样子。
这是否满足您的应用要求？
关于iphone - 相机叠加图片，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15623754/