如何使用我的iPhone应用拍照？

Question

我在xcode中用Cocoa编写了一个iPhone应用程序.我找不到任何教程或示例代码,说明如何使用内置摄像头拍照.我该怎么做呢？我在哪里可以找到好消息？

谢谢!

Answer 1

只需将以下代码复制并粘贴到项目中即可获得完全实现的功能.

其中takePhoto 和chooseFromLibrary 是我自己的方法名称,将在按钮触摸时调用.

确保将适当按钮的出口引用到这些方法中.

   -(IBAction)takePhoto :(id)sender

{
        UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
        {
            [imagePickerController setSourceType:UIImagePickerControllerSourceTypeCamera];
        }

        // image picker needs a delegate,
        [imagePickerController setDelegate:self];

    // Place image picker on the screen
    [self presentModalViewController:imagePickerController animated:YES];
}



-(IBAction)chooseFromLibrary:(id)sender
{

    UIImagePickerController *imagePickerController= [[UIImagePickerController alloc] init]; 
    [imagePickerController setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];

    // image picker needs a delegate so we can respond to its messages
    [imagePickerController setDelegate:self];

    // Place image picker on the screen
    [self presentModalViewController:imagePickerController animated:YES];

}

//delegate methode will be called after picking photo either from camera or library
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{   
    [self dismissModalViewControllerAnimated:YES]; 
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

    [myImageView setImage:image];    // "myImageView" name of any UIImageView.
}

Answer 2

使用UIImagePickerController.这里有一个很好的教程.

http://www.zimbio.com/iPhone/articles/1109/Picking+Images+iPhone+SDK+UIImagePickerController

您应该将源类型设置为UIImagePickerControllerSourceTypeCamera或UIImagePickerControllerSourceTypePhotoLibrary.请注意,这两种类型会在屏幕上显示非常不同的显示.你应该仔细测试.特别是,如果你正在嵌套UIImagePickerController内部a UINavigationController,如果你不小心,最终可能会有多个导航栏和其他奇怪的效果.

另见此主题

Answer 3

该UIImagePickerController课程允许您拍照或从照片库中选择照片。将源类型指定为UIImagePickerControllerSourceTypeCamera.

另请参阅之前提出的问题： 使用 iPhone SDK 访问相机