本文档主要介绍如何感知当前网络的好与坏。
当我们在使用微信视频通话的时候，如果遇到网络环境较差的情况（比如在进入电梯以后），微信会在视频通话的界面上提示”您当前的网络质量较差“。本文档主要介绍如何通过 TRTC 完成同样的交互。
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调用指引
TRTC 提供了一个叫做 onNetworkQuality 的回调事件，它会每隔两秒钟一次向您汇报当前的网络质量，其参数包括 localQuality 和 remoteQuality 两个部分：
localQuality ：代表您当前的网络质量，分为 6 个等级，分别是 Excellent、Good、Poor、Bad、VeryBad 和 Down。
remoteQuality：代表远端用户的网络质量，这是一个数组，数组中的每个元素代表一个远端用户的网络质量。
Quality | 名称 | 说明 |
0 | Unknown | 未感知到 |
1 | Excellent | 当前网络非常好 |
2 | Good | 当前网络比较好 |
3 | Poor | 当前网络一般 |
4 | Bad | 当前网络较差，可能会出现明显的卡顿和通话延迟 |
5 | VeryBad | 当前网络很差，TRTC 只能勉强保持连接，但无法保证通讯质量 |
6 | Down | 当前网络不满足 TRTC 的最低要求，无法进行正常的音视频通话 |
您只需要监听 TRTC 的 onNetworkQuality 并在界面上做相应地提示即可：
// 监听 onNetworkQuality 回调并感知当前网络状态的变化@Overridepublic void onNetworkQuality(TRTCCloudDef.TRTCQuality localQuality,ArrayList<TRTCCloudDef.TRTCQuality> remoteQuality){// Get your local network qualityswitch(localQuality) {case TRTCQuality_Unknown:Log.d(TAG, "SDK has not yet sensed the current network quality.");break;case TRTCQuality_Excellent:Log.d(TAG, "The current network is very good.");break;case TRTCQuality_Good:Log.d(TAG, "The current network is good.");break;case TRTCQuality_Poor:Log.d(TAG, "The current network quality barely meets the demand.");break;case TRTCQuality_Bad:Log.d(TAG, "The current network is poor, and there may be significant freezes and call delays.");break;case TRTCQuality_VeryBad:Log.d(TAG, "The current network is very poor, the communication quality cannot be guaranteed");break;case TRTCQuality_Down:Log.d(TAG, "The current network does not meet the minimum requirements.");break;default:break;}// Get the network quality of remote usersfor (TRTCCloudDef.TRTCQuality info : arrayList) {Log.d(TAG, "remote user : = " + info.userId + ", quality = " + info.quality);}}?
// 监听 onNetworkQuality 回调并感知当前网络状态的变化- (void)onNetworkQuality:(TRTCQualityInfo *)localQuality remoteQuality:(NSArray<TRTCQualityInfo *> *)remoteQuality {// Get your local network qualityswitch(localQuality.quality) {case TRTCQuality_Unknown:NSLog(@"SDK has not yet sensed the current network quality.");break;case TRTCQuality_Excellent:NSLog(@"The current network is very good.");break;case TRTCQuality_Good:NSLog(@"The current network is good.");break;case TRTCQuality_Poor:NSLog(@"The current network quality barely meets the demand.");break;case TRTCQuality_Bad:NSLog(@"The current network is poor, and there may be significant freezes and call delays.");break;case TRTCQuality_VeryBad:NSLog(@"The current network is very poor, the communication quality cannot be guaranteed");break;case TRTCQuality_Down:NSLog(@"The current network does not meet the minimum requirements.");break;default:break;}// Get the network quality of remote usersfor (TRTCQualityInfo *info in arrayList) {NSLog(@"remote user : = %@, quality = %@", info.userId, @(info.quality));}}
// 监听 onNetworkQuality 回调并感知当前网络状态的变化void onNetworkQuality(liteav::TRTCQualityInfo local_quality,liteav::TRTCQualityInfo* remote_quality, uint32_t remote_quality_count) {// Get your local network qualityswitch (local_quality.quality) {case TRTCQuality_Unknown:printf("SDK has not yet sensed the current network quality.");break;case TRTCQuality_Excellent:printf("The current network is very good.");break;case TRTCQuality_Good:printf("The current network is good.");break;case TRTCQuality_Poor:printf("The current network quality barely meets the demand.");break;case TRTCQuality_Bad:printf("The current network is poor, and there may be significant freezes and call delays.");break;case TRTCQuality_Vbad:printf("The current network is very poor, the communication quality cannot be guaranteed");break;case TRTCQuality_Down:printf("The current network does not meet the minimum requirements.");break;default:break;}// Get the network quality of remote usersfor (int i = 0; i < remote_quality_count; ++i) {printf("remote user : = %s, quality = %d", remote_quality[i].userId, remote_quality[i].quality);}}?
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