iOS 海量点崩溃

[Liu-Ya]

看起来是未处理nil的类型错误

Thread 0 name:
Thread 0 Crashed:
0   SCRM                          	0x000000010062c524 Swift runtime failure: Unexpectedly found nil while unwrapping an Optional value + 0 (MultiPointManager.swift:0)
1   SCRM                          	0x000000010062c524 MultiPoint.getOverlay() + 0 (MultiPointManager.swift:34)
2   SCRM                          	0x000000010062c524 protocol witness for Overlay.getOverlay() in conformance MultiPoint + 52 (<compiler-generated>:34)
3   SCRM                          	0x00000001006272e8 MapView.didAddSubview(_:) + 84 (MapViewManager.swift:74)
4   SCRM                          	0x000000010062747c @objc MapView.didAddSubview(_:) + 52 (<compiler-generated>:0)
5   UIKitCore                     	0x000000019650a0ac -[UIView(Internal) _addSubview:positioned:relativeTo:] + 2096 (UIView.m:16913)
6   SCRM                          	0x000000010053b40c -[UIView(React) didUpdateReactSubviews] + 148 (UIView+React.m:175)
7   SCRM                          	0x0000000100529988 __48-[RCTUIManager _dispatchChildrenDidChangeEvents]_block_invoke + 176 (RCTUIManager.m:1275)
8   SCRM                          	0x0000000100529488 __44-[RCTUIManager flushUIBlocksWithCompletion:]_block_invoke + 164 (RCTUIManager.m:1199)
9   SCRM                          	0x0000000100529578 __44-[RCTUIManager flushUIBlocksWithCompletion:]_block_invoke.146 + 28 (RCTUIManager.m:1219)
10  libdispatch.dylib             	0x000000019b937460 _dispatch_call_block_and_release + 32 (init.c:1518)
11  libdispatch.dylib             	0x000000019b938f88 _dispatch_client_callout + 20 (object.m:560)
12  libdispatch.dylib             	0x000000019b9477f4 _dispatch_main_queue_drain + 928 (inline_internal.h:2632)
13  libdispatch.dylib             	0x000000019b947444 _dispatch_main_queue_callback_4CF + 44 (queue.c:7917)
14  CoreFoundation                	0x00000001943b16c8 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16 (CFRunLoop.c:1780)
15  CoreFoundation                	0x000000019439302c __CFRunLoopRun + 2036 (CFRunLoop.c:3147)
16  CoreFoundation                	0x0000000194397eb0 CFRunLoopRunSpecific + 612 (CFRunLoop.c:3418)
17  GraphicsServices              	0x00000001ce58d368 GSEventRunModal + 164 (GSEvent.c:2196)
18  UIKitCore                     	0x000000019688d668 -[UIApplication _run] + 888 (UIApplication.m:3758)
19  UIKitCore                     	0x000000019688d2cc UIApplicationMain + 340 (UIApplication.m:5348)
20  SCRM                          	0x000000010036c63c main + 80 (main.m:7)
21  dyld                          	0x00000001b2c90960 start + 2528 (dyldMain.cpp:1170)

[Liu-Ya]

        <MultiPoint
          icon={require("~/assets/images/point.png")}
          items={points}
          onPress={({ nativeEvent }) => onPointClick(nativeEvent.index)}
        />

items 为 undefined 时出现上面的错误，设置为[]可以避免崩溃，但更新items无效，不绘制

[qiuxiang]

这个问题我有空再修吧，要避免出错也很简单

{points && <MultiPoint />}

就可以了