临时解决

pageD/privateChat/privateChat.vue

@@ -132,10 +132,8 @@
 
 			this.messages = privateMessages.sentMessages;
 			this.pendingMessages = privateMessages.pendingMessages;
-
+			console.log(this.friend.name)
-			uni.setNavigationBarTitle({
+			this.setTitle(this.friend.name)
-				title : this.friend.name
-			});
 			setTimeout(() => {
 				uni.setNavigationBarColor({
 					backgroundColor : '#FF780F',
@@ -158,6 +156,15 @@
 			this.imService.uid = 0;
 		},
 		methods: {
+			setTitle(title){
+				let that = this
+				uni.setNavigationBarTitle({
+					title : title,
+					fail(){
+						that.setTitle(title)
+					}
+				});
+			},
 			bindtapInput(){
 				console.log("222")
 				var _that = this;

pages.json

@@ -497,7 +497,7 @@
 				{
 					"path": "privateChat/privateChat",
 					"style": {
-						"navigationBarTitleText": "uni-app",
+						"navigationBarTitleText": "商家",
 						"app-plus": {
 							"titleNView": true 
 						}

pages/information/information.vue

@@ -149,6 +149,7 @@
 			
 			},
 			gochat(id){
+				console.log(id)
 				this.$u.route({
 					url:"/pageD/privateChat/privateChat",
 					params:{