创建一个call项目

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Call Directory Extension创建成功后，会发现多了下面几个文件：

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CallDirectoryHandler.m文件中提供了如下三个方法：

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1、开始请求的方法，在打开设置-电话-来电阻止与身份识别开关时，系统自动调用

- (void)beginRequestWithExtensionContext:(CXCallDirectoryExtensionContext *)context 

2、添加黑名单：根据生产的模板，只需要修改CXCallDirectoryPhoneNumber数组，注意，电话号码前要加区号：+86，数组内号码要按升序排列。

- (BOOL)addBlockingPhoneNumbersToContext:(CXCallDirectoryExtensionContext *)context 

3、添加信息标识：需要修改CXCallDirectoryPhoneNumber数组和对应的标识数组；CXCallDirectoryPhoneNumber数组存放的号码和标识数组存放的标识要一一对应，CXCallDirectoryPhoneNumber数组内的号码要按升序排列

- (BOOL)addIdentificationPhoneNumbersToContext:(CXCallDirectoryExtensionContext *)context

开启权限：

检查权限是否开启

-(void)checkPermissions
{
    CXCallDirectoryManager *manager = [CXCallDirectoryManager sharedInstance];
    // 获取权限状态
    [manager getEnabledStatusForExtensionWithIdentifier:@"com.womow.wxpush.call" completionHandler:^(CXCallDirectoryEnabledStatus enabledStatus, NSError * _Nullable error) {
        if (!error) {
            NSString *title = nil;
            if (enabledStatus == CXCallDirectoryEnabledStatusDisabled) {
                /*
                 CXCallDirectoryEnabledStatusUnknown = 0,
                 CXCallDirectoryEnabledStatusDisabled = 1,
                 CXCallDirectoryEnabledStatusEnabled = 2,
                 */
                title = @"未授权，请在设置->电话授权相关权限";
            }else if (enabledStatus == CXCallDirectoryEnabledStatusEnabled) {
                title = @"授权";
            }else if (enabledStatus == CXCallDirectoryEnabledStatusUnknown) {
                title = @"不知道";
            }
            UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"提示"
                                                                           message:title
                                                                    preferredStyle:UIAlertControllerStyleAlert];
            
            UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
                                                                  handler:^(UIAlertAction * action) {}];
            
            [alert addAction:defaultAction];
            [self presentViewController:alert animated:YES completion:nil];
        }else{
            UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"提示"
                                                                           message:@"有错误"
                                                                    preferredStyle:UIAlertControllerStyleAlert];
            
            UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
                                                                  handler:^(UIAlertAction * action) {}];
            
            [alert addAction:defaultAction];
            [self presentViewController:alert animated:YES completion:nil];
        }
    }];
}

若提示未授权，则手动开启权限：

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运行项目到真机中，效果图如下：

更新号码

-(void)updateData
{
    CXCallDirectoryManager *manager = [CXCallDirectoryManager sharedInstance];
    [manager reloadExtensionWithIdentifier:@"com.womow.wxpush.call" completionHandler:^(NSError * _Nullable error) {
        if (error == nil) {
            UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"提示"
                                                                           message:@"更新成功"
                                                                    preferredStyle:UIAlertControllerStyleAlert];
            
            UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
                                                                  handler:^(UIAlertAction * action) {}];
            
            [alert addAction:defaultAction];
            [self presentViewController:alert animated:YES completion:nil];
        }else{
            UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"提示"
                                                                           message:@"更新失败"
                                                                    preferredStyle:UIAlertControllerStyleAlert];
            
            UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
                                                                  handler:^(UIAlertAction * action) {}];
            
            [alert addAction:defaultAction];
            [self presentViewController:alert animated:YES completion:nil];
        }
    }];
}