从 iOS 13 开始，苹果基于安全考虑在使用 VoIP 推送时必须配合苹果 CallKit 使用，否则 iOS 系统将在收到 VoIP 推送后杀掉 App 进程。 而由于工信部的要求，在中国区 App Store 上架的应用不允许使用苹果 CallKit 功能，请在中国区上架的开发者不要使用 VoIP 推送功能。
导入 PushKit 并设置 PKPushRegistry
#import <PushKit/PushKit.h>
@interface AppDelegate () <PKPushRegistryDelegate>
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// 初始化 PKPushRegistry
PKPushRegistry *pushRegistry = [[PKPushRegistry alloc] initWithQueue:dispatch_get_main_queue()];
pushRegistry.delegate = self;
pushRegistry.desiredPushTypes = [NSSet setWithObject:PKPushTypeVoIP];
return YES;
}
注册 VoIP 推送并处理回调
#pragma mark - PKPushRegistryDelegate
// 当 VoIP token 生成时调用
- (void)pushRegistry:(PKPushRegistry *)registry didUpdatePushCredentials:(PKPushCredentials *)credentials forType:(PKPushType)type {
// 调用 SDK 接口将 VoIP token 发送给 IM 服务器
[JIM.shared.connectionManager registerVoIPToken:pushCredentials.token];
}
// 当设备接收到 VoIP 推送时调用
- (void)pushRegistry:(PKPushRegistry *)registry didReceiveIncomingPushWithPayload:(PKPushPayload *)payload forType:(PKPushType)type withCompletionHandler:(void (^)(void))completion {
NSLog(@"收到 VoIP 推送：%@", payload.dictionaryPayload);
// 根据推送内容处理业务逻辑，比如显示来电界面
[self handleIncomingCallWithPayload:payload.dictionaryPayload];
}
// 处理来电
- (void)handleIncomingCallWithPayload:(NSDictionary *)payload {
// 解析推送内容并显示来电界面
//通话 id
NSString *callId = payload[@"room_id"];
//邀请者用户 id
NSString *inviterId = payload[@"inviter_id"];
//是否多人通话
BOOL isMulti;
//通话类型
JCallMediaType mediaType;
id obj = payload[@"is_multi"];
if ([obj isKindOfClass:[NSNumber class]]) {
isMulti = [(NSNumber *)obj boolValue];
}
obj = payload[@"media_type"];
if ([obj isKindOfClass:[NSNumber class]]) {
mediaType = [(NSNumber *)obj integerValue];
}
// TODO: 调用系统 CallKit 或自定义界面，显示来电通知
}