解决订阅消息有时候会永远pending的问题

utils/BleHelper.js

@@ -105,17 +105,17 @@ class BleHelper {
 	}
 
 	linkAllDevices() {
-		 console.log("模块启动时，自动连接已连接过的设备", this.data.LinkedList);
+		console.log("模块启动时，自动连接已连接过的设备", this.data.LinkedList);
 
 		if (this.data.LinkedList && this.data.LinkedList.length > 0) {
 			for (var i = 0; i < this.data.LinkedList.length; i++) {
 				let device = this.data.LinkedList[i];
 				// console.log("自动连接绑定过的设备:" + device.deviceId);
-				if(device.macAddress && device.device && device.device.id){
+				if (device.macAddress && device.device && device.device.id) {
 					this.LinkBlue(device.deviceId, device.writeServiceId, device.wirteCharactId, device
-					.notifyCharactId);	
+						.notifyCharactId);
 				}
-				
+
 			}
 		} else {
 			// console.log("无设备连接");
@@ -389,7 +389,7 @@ class BleHelper {
 							this.data.discovering = state.discovering;
 							if (this.data.available && this.data
 								.isOpenBlue) { //蓝牙状态再次可用，重连所有设备
-								 this.linkAllDevices();
+								this.linkAllDevices();
 
 							}
 
@@ -468,14 +468,17 @@ class BleHelper {
 									this.data.LinkedList.find((v) => {
 										if (v.deviceId == receive
 											.deviceId) {
-											str= str.replace(
+											str = str.replace(
 												header, "");
-												if(str.includes(':')){
-													v.macAddress =str;
-												}else{
-													v.macAddress=str.replace(/(.{2})/g, '$1:').slice(0, -1)
-												}
-											console.log("收到mac地址:", v.macAddress)
+											if (str.includes(':')) {
+												v.macAddress = str;
+											} else {
+												v.macAddress = str.replace(
+														/(.{2})/g, '$1:')
+													.slice(0, -1)
+											}
+											console.log("收到mac地址:", v
+												.macAddress)
 										}
 									});
 									uni.setStorageSync(this.StorageKey, this.data
@@ -512,29 +515,31 @@ class BleHelper {
 								hexs: hexs
 							};
 							console.log("监听到特征值:" + JSON.stringify(recData));
-							try{
+							try {
 								if (this.cfg.receivDataCallback) {
-								
+
 									if (this.cfg.receivDataCallback.length > 0) {
 										console.log("有人订阅消息")
 										let path = this.getCurrentPagePath();
-								
-										this.cfg.receivDataCallback.forEach((rec) => {
-								
+
+										this.cfg.receivDataCallback.forEach((
+										rec) => {
+
 											if (rec.callback) {
-												rec.callback(recData, f, path);
+												rec.callback(recData, f,
+													path);
 											}
 										})
-									}else{
+									} else {
 										console.log("无人订阅消息");
 									}
 								} else {
 									console.log("无人订阅receivDataCallback,不处理数据");
 								}
-							}catch(ex){
-								console.log("ex=",ex);
+							} catch (ex) {
+								console.log("ex=", ex);
 							}
-							
+
 						});
 
 
@@ -687,9 +692,10 @@ class BleHelper {
 				}
 				// console.log("c=", c);
 				let startSubScribe = (id, serviceId, characteristicId) => {
-					console.log("serviceId=",serviceId);
-					console.log("characteristicId=",characteristicId);
-					return new Promise((succ, err) => {
+					console.log("serviceId=", serviceId);
+					console.log("characteristicId=", characteristicId);
+					let p1= new Promise((succ, err) => {
+						
 						uni.notifyBLECharacteristicValueChange({
 							deviceId: id,
 							serviceId: serviceId,
@@ -697,7 +703,7 @@ class BleHelper {
 							state: state,
 							success: (res) => {
 								if (state) {
-									 console.log("订阅消息成功", res);
+									console.log("订阅消息成功", res);
 								} else {
 									console.log("取消订阅成功", res);
 								}
@@ -707,7 +713,8 @@ class BleHelper {
 										v.notifyState = state;
 									}
 								});
-								succ();
+								console.log("success SubScribe");
+								succ(res);//见了鬼了，有时候执行了succ但promise永远pending了
 							},
 							fail: (ex) => {
 
@@ -715,37 +722,59 @@ class BleHelper {
 							}
 						});
 					});
+					
+					let p2=new Promise((succ,err)=>{
+						setTimeout(()=>{
+							err({code:-1});
+						},50);
+					});
+					return new Promise((succ,err)=>{
+						Promise.race([p1,p2]).then(succ).catch(ex=>{
+							if(ex.code==-1){
+								succ();
+								return;
+							}
+							err(ex);
+						})
+					});
+					
 				}
 				let promies = new Array();
-				if(c.Characteristics && c.Characteristics.length){
+				if (c.Characteristics && c.Characteristics.length) {
 					for (var i = 0; i < c.Characteristics.length; i++) {
 						let item = c.Characteristics[i];
 						let serviceId = item.serviceId;
 						let characteristicId = item.uuid;
-					
+
 						if (item.properties.notify) {
 							promies.push(startSubScribe(deviceId, serviceId, characteristicId));
 						}
 					}
 				}
-				
-				if (promies.length > 0) {
-					Promise.allSettled(promies).then((results) => {
 
+				if (promies.length > 0) {
+
+					console.log("234324324324");
+					Promise.allSettled(promies).then((results) => {
+						console.log("11111");
 						results.forEach((result, index) => {
 							if (result.status === "fulfilled") {
 								console.log(`操作${index + 1}成功:`, result.value);
 							} else {
-								 console.log(`操作${index + 1}失败:`, result.reason
-								 	.message);
+								console.log(`操作${index + 1}失败:`, result.reason
+									.message);
 							}
 						});
 
 						resolve();
 					}).catch((ex) => {
+						console.log("222222");
 						reject(ex);
+					}).finally(()=>{
+						console.log("finally")
 					});
 				} else {
+					console.log("33333");
 					resolve();
 				}
 
@@ -958,89 +987,95 @@ class BleHelper {
 
 		//连接设备
 		var linkDevice = () => {
-		  // 添加重试次数限制
-		  let retryCount = 0;
-		  const maxRetries = 1; // 最大重试次数
-		  
-		  const connect = () => {
-		    return new Promise((resolve, reject) => {
-		      if (fIndex > -1 && f?.Linked) {
-		        console.log("当前已连接，跳过其他步骤");
-		        resolve(false);
-		        return;
-		      }
-		      
-		      if (!this.data.available) {
-		        reject(this.getError({ code: 10001 }));
-		        return;
-		      }
-		      
-		      console.log("正在连接" + deviceId);
-		      uni.createBLEConnection({
-		        deviceId: deviceId,
-		        timeout: 30000,
-		        success: (info) => {
-		          console.log("新连接成功", this.data.LinkedList);
-		          this.getLinkBlue().then((arr) => {
-		            let cr = arr.devices.find(c => {
-		              if (c.deviceId == deviceId) {
-		                c.Linked = true;
-		                return true;
-		              }
-		              return false;
-		            });
-		            
-		            if (fIndex > -1) {
-		              this.data.LinkedList[fIndex].Linked = true;
-		            } else {
-		              this.data.LinkedList.push(cr);
-		            }
-		            
-		            uni.setStorageSync(this.StorageKey, this.data.LinkedList);
-		            console.log("LinkedList=", this.data.LinkedList);
-		            
-		            // 处理 MTU 设置
-		            if (plus.os.name === 'Android') {
-		              uni.setBLEMTU({
-		                deviceId: deviceId,
-		                mtu: 512,
-		                success: (mtu) => {
-		                  console.log("mtu设置成功", mtu);
-		                  resolve(true);
-		                },
-		                fail: () => {
-		                  console.log("mtu设置失败");
-		                  resolve(true); // MTU设置失败不影响连接成功
-		                }
-		              });
-		            } else {
-		              resolve(true);
-		            }
-		          }).catch((ex) => {
-		            reject(this.getError(ex));
-		          });
-		        },
-		        fail: (ex) => {
-		          ex = this.getError(ex);
-		          console.log("蓝牙连接失败" + JSON.stringify(ex));
-		          
-		          // 连接超时后自动重试
-		          if (ex.code === 10012 && retryCount < maxRetries) {
-		            retryCount++;
-		            console.log(`重试连接 (${retryCount}/${maxRetries})`);
-		            // 使用 setTimeout 避免递归调用栈溢出
-		            setTimeout(() => {
-		              connect().then(resolve).catch(reject);
-		            }, 1000); // 延迟1秒后重试
-		          } else {
-		            reject(ex);
-		          }
-		        }
-		      });
-		    });
-		  };
-		  
-		  return connect();
+			// 添加重试次数限制
+			let retryCount = 0;
+			const maxRetries = 1; // 最大重试次数
+
+			const connect = () => {
+				return new Promise((resolve, reject) => {
+					if (fIndex > -1 && f?.Linked) {
+						console.log("当前已连接，跳过其他步骤");
+						resolve(false);
+						return;
+					}
+
+					if (!this.data.available) {
+						reject(this.getError({
+							code: 10001
+						}));
+						return;
+					}
+
+					console.log("正在连接" + deviceId);
+					uni.createBLEConnection({
+						deviceId: deviceId,
+						timeout: 30000,
+						success: (info) => {
+							console.log("新连接成功", this.data.LinkedList);
+							this.getLinkBlue().then((arr) => {
+								let cr = arr.devices.find(c => {
+									if (c.deviceId == deviceId) {
+										c.Linked = true;
+										return true;
+									}
+									return false;
+								});
+
+								if (fIndex > -1) {
+									this.data.LinkedList[fIndex].Linked = true;
+								} else {
+									this.data.LinkedList.push(cr);
+								}
+
+								uni.setStorageSync(this.StorageKey, this.data
+									.LinkedList);
+								console.log("LinkedList=", this.data
+								.LinkedList);
+
+								// 处理 MTU 设置
+								if (plus.os.name === 'Android') {
+									uni.setBLEMTU({
+										deviceId: deviceId,
+										mtu: 512,
+										success: (mtu) => {
+											console.log("mtu设置成功",
+												mtu);
+											resolve(true);
+										},
+										fail: () => {
+											console.log("mtu设置失败");
+											resolve(
+											true); // MTU设置失败不影响连接成功
+										}
+									});
+								} else {
+									resolve(true);
+								}
+							}).catch((ex) => {
+								reject(this.getError(ex));
+							});
+						},
+						fail: (ex) => {
+							ex = this.getError(ex);
+							console.log("蓝牙连接失败" + JSON.stringify(ex));
+
+							// 连接超时后自动重试
+							if (ex.code === 10012 && retryCount < maxRetries) {
+								retryCount++;
+								console.log(`重试连接 (${retryCount}/${maxRetries})`);
+								// 使用 setTimeout 避免递归调用栈溢出
+								setTimeout(() => {
+									connect().then(resolve).catch(reject);
+								}, 1000); // 延迟1秒后重试
+							} else {
+								reject(ex);
+							}
+						}
+					});
+				});
+			};
+
+			return connect();
 		};
 
 
@@ -1051,32 +1086,32 @@ class BleHelper {
 				////console.log("2222222");
 				return linkDevice(deviceId);
 			}).then((res) => {
-				
+
 				if (res) { //新连接
-				console.log("11111111");
+					console.log("11111111");
 					if (fIndex == -1) {
 						console.log("开始获取服务", targetServiceId)
 						return this.getService(deviceId, targetServiceId, writeCharId,
 							notifyCharId); //获取服务	
 					} else {
-						if(f.wirteCharactId && f.notifyCharactId){
+						if (f.wirteCharactId && f.notifyCharactId) {
 							if (!f.notifyState) {
 								console.log("开始订阅特征");
 								this.subScribe(deviceId, true);
-							}else{
+							} else {
 								console.log("不订阅消息");
 							}
 							return Promise.resolve(true);
-						}else{
+						} else {
 							console.log("开始获取服务", targetServiceId)
 							return this.getService(deviceId, targetServiceId, writeCharId,
 								notifyCharId);
 						}
-						
-						
+
+
 					}
 				} else { //已连接过，直接订阅消息		
-							console.log("11111111");
+					console.log("11111111");
 					if (fIndex > -1 && f && !f.notifyState) {
 
 						this.subScribe(deviceId, true);
@@ -1085,13 +1120,13 @@ class BleHelper {
 				}
 
 			}).then(() => {
-
+				console.log("then.....");
 
 				setTimeout(() => {
 					resolve();
 				}, 500);
 			}).catch((ex) => {
-				////console.log("出现异常", ex);
+				console.log("出现异常", ex);
 				reject(ex);
 			});
 		});