简单实现 ios 离线地图模块 (6aa74889) · Commits · 放牛的园子 / react-native-amap3d

ios/AMapOffline.m

0 → 100644

+102 −0

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			#import <React/RCTBridgeModule.h>
			#import <MAMapKit/MAOfflineMap.h>

			#pragma ide diagnostic ignored "OCUnusedClassInspection"

			@interface AMapOffline : NSObject <RCTBridgeModule>
			@end

			@implementation AMapOffline

			RCT_EXPORT_MODULE()

			RCT_REMAP_METHOD(getProvinces,
			resolveProvinces: (RCTPromiseResolveBlock) resolve
			reject: (RCTPromiseRejectBlock) reject) {
			NSMutableArray *provinces = [NSMutableArray new];
			for (id item in MAOfflineMap.sharedOfflineMap.provinces) {
			MAOfflineProvince province = (MAOfflineProvince ) item;

			NSMutableArray *cities = [NSMutableArray new];
			for (id city in province.cities) {
			[cities addObject:[self itemData:(MAOfflineCity *) city]];
			}

			[provinces addObject:@{
			@"name": province.name,
			@"size": @(province.size),
			@"state": [self stateString:province.itemStatus],
			@"cities": cities,
			}];
			}
			for (id item in MAOfflineMap.sharedOfflineMap.municipalities) {
			[provinces addObject:[self itemData:item]];
			}
			resolve(provinces);
			}

			RCT_REMAP_METHOD(getCities,
			resolveCities: (RCTPromiseResolveBlock) resolve
			reject: (RCTPromiseRejectBlock) reject) {
			NSMutableArray *cities = [NSMutableArray new];
			for (id city in MAOfflineMap.sharedOfflineMap.cities) {
			[cities addObject:[self itemData:(MAOfflineCity *) city]];
			}
			resolve(cities);
			}

			RCT_EXPORT_METHOD(download:(NSString *)name) {
			MAOfflineItem *item = [self getItem:name];
			if (item != nil) {
			[MAOfflineMap.sharedOfflineMap downloadItem: item
			shouldContinueWhenAppEntersBackground:YES
			downloadBlock:nil];
			}
			}

			- (MAOfflineItem )getItem:(NSString )name {
			BOOL (^predicate)(MAOfflineItem , NSUInteger, BOOL )=^BOOL (MAOfflineItem * item, NSUInteger _, BOOL *stop) {
			return [name isEqual:item.name];
			};

			NSUInteger i = [MAOfflineMap.sharedOfflineMap.provinces indexOfObjectPassingTest:predicate];
			if (i != NSNotFound) {
			return MAOfflineMap.sharedOfflineMap.provinces[i];
			}

			i = [MAOfflineMap.sharedOfflineMap.municipalities indexOfObjectPassingTest:predicate];
			if (i != NSNotFound) {
			return MAOfflineMap.sharedOfflineMap.municipalities[i];
			}

			i = [MAOfflineMap.sharedOfflineMap.cities indexOfObjectPassingTest:predicate];
			if (i != NSNotFound) {
			return MAOfflineMap.sharedOfflineMap.cities[i];
			}

			return nil;
			}

			- (NSString *)stateString:(MAOfflineItemStatus)code {
			NSString *state = @"";
			if (code == MAOfflineItemStatusCached) {
			state = @"downloading";
			}
			if (code == MAOfflineItemStatusExpired) {
			state = @"expired";
			}
			if (code == MAOfflineItemStatusInstalled) {
			state = @"downloaded";
			}
			return state;
			}

			- (NSDictionary )itemData:(MAOfflineCity )city {
			return @{
			@"name": city.name,
			@"size": @(city.size),
			@"state": [self stateString:city.itemStatus],
			};
			}

			@end

src/Offline.js

+1 −1

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	@@ -4,5 +4,5 @@ const {AMapOffline} = NativeModules
	export default {		export default {
	getProvinces: () => AMapOffline.getProvinces(),		getProvinces: () => AMapOffline.getProvinces(),
	getCities: () => AMapOffline.getCities(),		getCities: () => AMapOffline.getCities(),
	download: name => AMapOffline.getDownload(name),		download: name => AMapOffline.download(name),
	}		}