相机、通讯录权限问题

1. 检测通讯录是否授权

 + (void)CheckAddressBookAuthorization:(void (^)(bool isAuthorized))block
{
ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, NULL);
ABAuthorizationStatus authStatus = ABAddressBookGetAuthorizationStatus();

if (authStatus != kABAuthorizationStatusAuthorized) {
    ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error){
        dispatch_async(dispatch_get_main_queue(), ^{
            if (error) {
             NSLog(@"Error: %@", (__bridge NSError *)error);
            }else if (!granted) {
             block(NO);
            }else {
             block(YES);
            }
        });
    });
}else {
    block(YES);
}
}

2.是否开启相机权限

 - (BOOL)isOpenCamera {

AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if (authStatus == AVAuthorizationStatusRestricted || authStatus ==AVAuthorizationStatusDenied) {
    return NO;
} else {
    return YES;
}
}

注：

如果授权成功，则进行下一步操作，否则添加提示让用户去设置里面进行设置

进入用户设置的方法：

  /**
 *  跳转到系统设置页面，iOS8之后可用
 */
- (void)gotoSettings{

if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString: UIApplicationOpenSettingsURLString]]) {
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString: UIApplicationOpenSettingsURLString]];
}
}