大橙子网站建设,新征程启航
为企业提供网站建设、域名注册、服务器等服务
打开相机:
创新互联公司专注于企业营销型网站建设、网站重做改版、纳溪网站定制设计、自适应品牌网站建设、HTML5、商城网站建设、集团公司官网建设、外贸营销网站建设、高端网站制作、响应式网页设计等建站业务,价格优惠性价比高,为纳溪等各大城市提供网站开发制作服务。
[cpp] view plain copy
//先设定sourceType为相机,然后判断相机是否可用(ipod)没相机,不可用将sourceType设定为相片库
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
// if (![UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) {
// sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
// }
//sourceType = UIImagePickerControllerSourceTypeCamera; //照相机
//sourceType = UIImagePickerControllerSourceTypePhotoLibrary; //图片库
//sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; //保存的相片
UIImagePickerController *picker = [[UIImagePickerController alloc] init];//初始化
picker.delegate = self;
picker.allowsEditing = YES;//设置可编辑
picker.sourceType = sourceType;
[self presentModalViewController:picker animated:YES];//进入照相界面
[picker release];
打开相册:(区分pad和iphone)
for iphone:
[cpp] view plain copy
UIImagePickerController *pickerImage = [[UIImagePickerController alloc] init];
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
pickerImage.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
//pickerImage.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
pickerImage.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:pickerImage.sourceType];
}
pickerImage.delegate = self;
pickerImage.allowsEditing = NO;
[self presentModalViewController:pickerImage animated:YES];
[pickerImage release];
for ipad:
[cpp] view plain copy
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
//sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum; //保存的相片
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = NO;//是否允许编辑
picker.sourceType = sourceType;
/*
如果从一个导航按钮处呈现,使用:
presentPopoverFromBarButtonItem:permittedArrowDirections:animated:;
如果要从一个视图出呈现,使用:
presentPopoverFromRect:inView:permittedArrowDirections:animated:
如果设备旋转以后,位置定位错误需要在父视图控制器的下面方法里面重新定位:
didRotateFromInterfaceOrientation:(在这个方法体里面重新设置rect)
然后再次调用:
- (void)presentPopoverFromRect:(CGRect)rect inView:(UIView *)view permittedArrowDirections:(UIPopoverArrowDirection)arrowDirections animated:(BOOL)animated
*/
//UIPopoverController只能在ipad设备上面使用;作用是用于显示临时内容,特点是总是显示在当前视图最前端,当单击界面的其他地方时自动消失。
UIPopoverController *popover = [[UIPopoverController alloc]initWithContentViewController:picker];
self.imagePicker = popover;
//permittedArrowDirections 设置箭头方向
[self.imagePicker presentPopoverFromRect:CGRectMake(0, 0, 300, 300) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
[picker release];
[popover release];
点击相册中的图片 货照相机照完后点击use 后触发的方法
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary
*)info
点击cancel 调用的方法
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
我是在做一个蓝牙项目遇到这种问题的,需求是蓝牙连接后按设备按钮调用相机并且控制相机拍照,因此我选择使用自定义相机,设备发送的参数都是在一个cordova插件中实现的,它的父类是NSObject类型的。当我实现跳转到自定义的相机控制器里面时,一直出现whose view is not in the window hierarchy 这个错误,最后,我把在 viewDidLoad 里面的方法转移到 viewDidAppear 方法里面,然后就解决了。
该错误简单的说,是由于 "ViewController" 还没有被加载,就调用该 ViewController 或者 ViewController 内的方法时,就会报这个错误。在不同地方调用 ViewController,解决的方法也不太一样。
该错误一般是由于在 viewDidLoad 里面调用引起的,解决办法是转移到 viewDidAppear 方法里面
解决办法1:
解决办法2:
参考地址:
使用UIImagePickerController来实现在项目中添加视频和图片的功能。
+ (BOOL)isSourceTypeAvailable:(UIImagePickerControllerSourceType)sourceType
指定的源类型是否可用,sourceType是枚举类型:
UIImagePickerControllerSourceTypePhotoLibrary:照片库
UIImagePickerControllerSourceTypeCamera:摄像头
UIImagePickerControllerSourceTypeSavedPhotosAlbum:相簿
+ (NSArray *)availableMediaTypesForSourceType:(UIImagePickerControllerSourceType)sourceType
指定的源设备上可用的媒体类型,一般就是图片和视频
+ (BOOL)isSourceTypeAvailable:(UIImagePickerControllerSourceType)sourceType;
指定来源是否支持:
UIImagePickerControllerSourceTypePhotoLibrary:来自图库
UIImagePickerControllerSourceTypeCamera:来自相机
UIImagePickerControllerSourceTypeSavedPhotosAlbum:来自相册
+ (BOOL)isCameraDeviceAvailable:(UIImagePickerControllerCameraDevice)cameraDevice
指定的摄像头是否可用,cameraDevice是枚举类型:
UIImagePickerControllerCameraDeviceRear:前置摄像头
UIImagePickerControllerCameraDeviceFront:后置摄像头
+ (BOOL)isFlashAvailableForCameraDevice:(UIImagePickerControllerCameraDevice)cameraDevice
指定摄像头的闪光灯是否可用
+ (NSArray *)availableCaptureModesForCameraDevice:(UIImagePickerControllerCameraDevice)cameraDevice
获得指定摄像头上的可用捕获模式,捕获模式是枚举类型:
UIImagePickerControllerCameraCaptureModePhoto:拍照模式
UIImagePickerControllerCameraCaptureModeVideo:视频录制模式
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
代理 - 拍摄或录制完成 这里获取图片或视频信息
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
代理 - 用户取消拍摄
UIImageWriteToSavedPhotosAlbum(UIImage *image, id completionTarget, SEL completionSelector, void *contextInfo)
保存图片到本地�相册
UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(NSString *videoPath)
能否将视频保存到相簿 更安全的判断
void UISaveVideoAtPathToSavedPhotosAlbum(NSString *videoPath, id completionTarget, SEL completionSelector, void *contextInfo)
保存视频到本地�相册
感谢崔大大的博客:iOS开发系列--音频播放、录音、视频播放、拍照、视频录制
感谢张大大的博客:AVFoundation Programming Guide(官方文档翻译)完整版中英对照
直接调用和间接调用。
1、ios相机拍照调用的是fuction方法直接调用相机启动程序,在启动和使用初期,同步识别其他功能及唤醒插件。
2、Android相机拍照调用的是user方法,下一步调用photo方法,再启动phoneP程序,逐步唤醒,流程式启动。
3、所以ios相机启动要比Android相机快,而且获取图片精度也高。
设置了UIImagePicker的allowEditing属性为YES后,会出现一个方框,如果在其代理方法中通过
[info objectForKey:@"UIImagePickerControllerEditedImage"];
是获取编辑框区域的图片。如果想要获取整个图片的话,你需要使用下面的方法
[info objectForKey:@"UIImagePickerControllerOriginalImage"];