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#pragma mark ------ 调用系统相机 ------ - (IBAction)cameraButton:(id)sender {
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"照相机" otherButtonTitles:@"图片库",@"闪光灯", nil];//UIActionSheet初始化，并设置delegate actionSheet.actionSheetStyle = UIActionSheetStyleDefault; [actionSheet showFromRect:self.view.bounds inView:self.view animated:YES]; // actionSheet弹出位置 }
#pragma mark -UIActionSheetDelegate - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { switch (buttonIndex) { case 0: { NSLog(@"打开系统照相机"); if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.delegate = self;//设置UIImagePickerController的代理，同时要遵循UIImagePickerControllerDelegate，UINavigationControllerDelegate协议 picker.allowsEditing = YES;//设置拍照之后图片是否可编辑，如果设置成可编辑的话会在代理方法返回的字典里面多一些键值。PS：如果在调用相机的时候允许照片可编辑，那么用户能编辑的照片的位置并不包括边角。 picker.sourceType = UIImagePickerControllerSourceTypeCamera;//UIImagePicker选择器的类型，UIImagePickerControllerSourceTypeCamera调用系统相机 [self presentViewController:picker animated:YES completion:nil]; } else{ //如果当前设备没有摄像头 UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:@"哎呀，当前设备没有摄像头。" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil]; [alertView show]; } break; } case 1: { NSLog(@"打开系统图片库"); if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) { UIImagePickerController * picker = [[UIImagePickerController alloc]init]; picker.delegate = self; picker.allowsEditing = YES;//是否可以对原图进行编辑
//打开相册选择照片 picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; [self presentViewController:picker animated:YES completion:nil]; } else{ UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:@"图片库不可用" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil]; [alertView show]; } break; } case 2: { NSLog(@"调用系统闪关灯");
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; // 返回用于捕获视频数据的设备（摄像头） if (![device hasTorch]) { NSLog(@"没有闪光灯"); }else{ [device lockForConfiguration:nil]; // 请求独占设备的硬件性能 if (device.torchMode == AVCaptureTorchModeOff) { [device setTorchMode: AVCaptureTorchModeOn]; // 打开闪光灯 } } } else { //如果当前设备没有摄像头 UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:@"哎呀，当前设备没有摄像头。" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil]; [alertView show]; }
break; } case 3: { NSLog(@"取消"); break; } default: break; } } |
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