Question

ios开发 系统调用照相机使用的按钮怎么调用

Answer 1

if (is_ios7) {

AVAuthorizationStatus authstatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];

if (authstatus ==AVAuthorizationStatusRestricted || authstatus ==AVAuthorizationStatusDenied) //用户关闭了权限

{

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请在设备的设置-隐私-相机中允许访问相机。" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];

[alert show];

return;

}

ALAuthorizationStatus author = [ALAssetsLibrary authorizationStatus];

if (author == kCLAuthorizationStatusRestricted || author ==kCLAuthorizationStatusDenied)//用户关闭了权限

{

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请在设备的设置-隐私-照片中允许访问照片。" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil];

[alert show];

return;

}

}

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

//相册是可以用模拟器打开

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {

UIImagePickerController *picker = [[UIImagePickerController alloc] init];

picker.delegate = self;

picker.sourceType = UIImagePickerControllerSourceTypeCamera;

picker.allowsEditing = YES;

[self presentViewController:picker animated:YES completion:nil];

}else{

UIAlertView *alter = [[UIAlertView alloc] initWithTitle:@"Error" message:@"没有相册" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:nil, nil];

[alter show];

}

}else{

[MBProgressHUD showMessag:@"无法打开相机" toView:Main_WINDOW];

NSLog(@"模拟器无法打开相机");

}