Question

ios ipad开发弹出一个框怎么实现

Answer 1

打开相机： [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