init project

ios/Classes/Category/MAPolyline+Flutter.m

@@ -0,0 +1,29 @@
+//
+//  MAPolyline+Flutter.m
+//  amap_map
+//
+//  Created by lly on 2020/11/9.
+//
+
+#import "MAPolyline+Flutter.h"
+#import <objc/runtime.h>
+
+@implementation MAPolyline (Flutter)
+
+- (NSString *)polylineId {
+    return objc_getAssociatedObject(self, @selector(polylineId));
+}
+
+- (void)setPolylineId:(NSString * _Nonnull)polylineId {
+    objc_setAssociatedObject(self, @selector(polylineId), polylineId, OBJC_ASSOCIATION_COPY);
+}
+
+- (instancetype)initWithPolylineId:(NSString *)polylineId {
+    self = [super init];
+    if (self) {
+        self.polylineId = polylineId;
+    }
+    return self;
+}
+
+@end