提交：iOS提供开启导航的入口函数；

ios/Classes/ClxConstant.h

+//
+//  ClxConstant.h
+//  Pods
+//
+//  Created by yjc on 2023/2/14.
+//
+
+#ifndef ClxConstant_h
+#define ClxConstant_h
+
+static const NSString sCLXMethodNameMapUpdate = "navigation#startNav";
+
+#endif /* ClxConstant_h */

ios/Classes/ClxMapNavigationView.m

@@ -153,6 +153,15 @@
 #pragma mark -
 #pragma mark - drive 独立路径规划和导航
 
+//开始导航
+- (void)startNav {
+    // 判断是否进行路径规划
+    if (self.startPoint && self.endPoint) {
+        NSLog(@"---driveRoutePlan :  self.startPoint=%@, self.endPoint=%@", self.startPoint, self.endPoint);
+        [self driveRoutePlan];
+    }
+}
+
 - (void)driveRoutePlan {
     AMapNaviPOIInfo *startPOIInfo = [[AMapNaviPOIInfo alloc] init];
     // 1.只传经纬度
@@ -289,12 +298,39 @@
 #pragma mark -
 #pragma mark - Flutter and Navite Method CallHandler
 
+// kChannelName 通道
 - (void)setMethodCallHandler {
     __weak __typeof__(self) weakSelf = self;
-//    [self.channel addMethodName:sCLXMethodNameMapUpdate withHandler:^(FlutterMethodCall * _Nonnull call, FlutterResult  _Nonnull result) {
-//        [weakSelf.mapView updateMapViewOption:call.arguments[@"options"] withRegistrar:weakSelf.registrar];
-//        result(nil);
-//    }];
+    [_channel setMethodCallHandler:^(FlutterMethodCall * _Nonnull call, FlutterResult  _Nonnull result) {
+        NSLog(@"---setMethodCallHandler---: method=%@, params=%@", call.method, call.arguments);
+        //开始导航
+        if ([call.method isEqualToString:@"navigation#startNav"]) {
+            weakSelf.startPoint = nil;
+            NSDictionary *startPoint = [call.arguments objectForKey:@"startPoint"];
+            if (startPoint && [startPoint isKindOfClass:[NSDictionary class]]) {
+                if ([startPoint.allKeys containsObject:@"latitude"] && [startPoint.allKeys containsObject:@"longitude"]) {
+                    NSString *startPointLat = startPoint[@"latitude"];
+                    NSString *startPointLon = startPoint[@"longitude"];
+                    NSLog(@"---开始导航 startPointLat: %@, startPointLon=%@", startPointLat, startPointLon);
+                    weakSelf.startPoint = [AMapNaviPoint locationWithLatitude:[startPointLat floatValue] longitude:[startPointLon floatValue]];
+                    NSLog(@"---开始导航 weakSelf.startPoint: %@", weakSelf.startPoint);
+                }
+            }
+            weakSelf.endPoint = nil;
+            NSDictionary *endPoint = [call.arguments objectForKey:@"endPoint"];
+            if (endPoint && [endPoint isKindOfClass:[NSDictionary class]]) {
+                if ([endPoint.allKeys containsObject:@"latitude"] && [endPoint.allKeys containsObject:@"longitude"]) {
+                    NSString *endPointLat = endPoint[@"latitude"];
+                    NSString *endPointLon = endPoint[@"longitude"];
+                    NSLog(@"---开始导航 endPointLat: %@, endPointLon=%@", endPointLat, endPointLon);
+                    weakSelf.endPoint = [AMapNaviPoint locationWithLatitude:[endPointLat floatValue] longitude:[endPointLon floatValue]];
+                    NSLog(@"---开始导航 weakSelf.endPoint: %@", weakSelf.endPoint);
+                }
+            }
+            //开始导航
+            [weakSelf startNav];
+        }
+    }];
 }
 
 @end