216 lines
8.5 KiB
Objective-C
216 lines
8.5 KiB
Objective-C
//
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// AMapConvertUtil.m
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// amap_map
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//
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// Created by lly on 2020/10/30.
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//
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#import "AMapConvertUtil.h"
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@implementation AMapConvertUtil
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/// 经纬度坐标转字符串
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/// @param coordinate 经纬度坐标
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+ (NSString *)stringFromCoordinate:(CLLocationCoordinate2D)coordinate {
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return [NSString stringWithFormat:@"{%.6f,%.6f}", coordinate.longitude, coordinate.latitude];
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}
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+ (UIColor*)colorFromNumber:(NSNumber*)numberColor {
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if (numberColor == nil || [numberColor isKindOfClass:[NSNumber class]] == NO) {
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return nil;
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}
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unsigned long value = [numberColor unsignedLongValue];
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return [UIColor colorWithRed:((float)((value & 0xFF0000) >> 16)) / 255.0
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green:((float)((value & 0xFF00) >> 8)) / 255.0
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blue:((float)(value & 0xFF)) / 255.0
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alpha:((float)((value & 0xFF000000) >> 24)) / 255.0];
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}
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+ (CGPoint)pointFromArray:(NSArray*)data {
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NSAssert((data != nil && [data isKindOfClass:[NSArray class]] && data.count == 2), @"数组类型转point格式错误");
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return CGPointMake([data[0] doubleValue],
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[data[1] doubleValue]);
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}
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/// 从数据中解析经纬度
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/// @param array 经纬度数组对（默认第一个当做维度，第二个当做经度）
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+ (CLLocationCoordinate2D)coordinateFromArray:(NSArray *)array {
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CLLocationCoordinate2D location = kCLLocationCoordinate2DInvalid;
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if (array.count == 2) {
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double latitude = [array[0] doubleValue];
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double longitude = [array[1] doubleValue];
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if ([self checkValidLatitude:latitude longitude:longitude]) {
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location = CLLocationCoordinate2DMake(latitude, longitude);
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} else if ([self checkValidLatitude:longitude longitude:latitude]) {//交换二者
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location = CLLocationCoordinate2DMake(longitude, latitude);
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} else {
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NSLog(@"经纬度参数异常，解析为无效经纬度");
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}
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} else {
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NSLog(@"经纬度参数异常，解析为无效经纬度");
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}
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return location;
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}
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+ (NSArray *)jsonFromCoordinate:(CLLocationCoordinate2D )coord {
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if (CLLocationCoordinate2DIsValid(coord)) {
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return @[@(coord.latitude),@(coord.longitude)];
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} else {
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NSLog(@"经纬度无效，返回为空");
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return @[];
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}
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}
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/// 检测经纬度是否有效
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/// @param latitude 维度
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/// @param longitude 经度
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+ (BOOL)checkValidLatitude:(double)latitude longitude:(double)longitude {
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if (latitude > 90 || latitude < -90) {
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return false;
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}
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if (longitude > 180 || longitude < -180) {
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return false;
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}
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return true;
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}
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+ (NSArray<NSNumber *> *)jsonArrayFromCoordinate:(CLLocationCoordinate2D)coordinate {
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if (CLLocationCoordinate2DIsValid(coordinate)) {
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return @[ @(coordinate.latitude), @(coordinate.longitude) ];
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} else {
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return @[];
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}
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}
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+ (UIImage*)scaleImage:(UIImage*)image param:(NSNumber*)scaleParam {
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double scale = 1.0;
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if ([scaleParam isKindOfClass:[NSNumber class]]) {
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scale = scaleParam.doubleValue;
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}
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if (fabs(scale - 1) > 1e-3) {
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return [UIImage imageWithCGImage:[image CGImage]
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scale:(image.scale * scale)
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orientation:(image.imageOrientation)];
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}
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return image;
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}
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+ (UIImage*)imageFromRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar iconData:(NSArray*)iconData {
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UIImage* image;
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if ([iconData.firstObject isEqualToString:@"defaultMarker"]) {
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image = [UIImage imageNamed:[registrar lookupKeyForAsset:@"packages/amap_map/res/marker_default.png"]];//默认的图片资源
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CGFloat screenScale = [[UIScreen mainScreen] scale];
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image = [self scaleImage:image param:[NSNumber numberWithFloat:screenScale]];
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//添加默认图片
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} else if ([iconData.firstObject isEqualToString:@"fromAsset"]) {
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if (iconData.count == 2) {
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image = [UIImage imageNamed:[registrar lookupKeyForAsset:iconData[1]]];
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CGFloat screenScale = [[UIScreen mainScreen] scale];
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image = [self scaleImage:image param:[NSNumber numberWithFloat:screenScale]];
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}
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} else if ([iconData.firstObject isEqualToString:@"fromAssetImage"]) {
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if (iconData.count == 3) {
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image = [UIImage imageNamed:[registrar lookupKeyForAsset:iconData[1]]];
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NSNumber* scaleParam = iconData[2];
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image = [self scaleImage:image param:scaleParam];
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} else {
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NSString* error =
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[NSString stringWithFormat:@"'fromAssetImage' should have exactly 3 arguments. Got: %lu",
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(unsigned long)iconData.count];
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NSException* exception = [NSException exceptionWithName:@"InvalidBitmapDescriptor"
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reason:error
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userInfo:nil];
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@throw exception;
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}
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} else if ([iconData[0] isEqualToString:@"fromBytes"]) {
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if (iconData.count == 2) {
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@try {
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FlutterStandardTypedData* byteData = iconData[1];
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CGFloat screenScale = [[UIScreen mainScreen] scale];
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image = [UIImage imageWithData:[byteData data] scale:screenScale];
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} @catch (NSException* exception) {
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@throw [NSException exceptionWithName:@"InvalidByteDescriptor"
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reason:@"Unable to interpret bytes as a valid image."
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userInfo:nil];
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}
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} else {
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NSString* error = [NSString
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stringWithFormat:@"fromBytes should have exactly one argument, the bytes. Got: %lu",
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(unsigned long)iconData.count];
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NSException* exception = [NSException exceptionWithName:@"InvalidByteDescriptor"
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reason:error
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userInfo:nil];
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@throw exception;
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}
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}
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return image;
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}
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/// 检测图标相关的描述，是否修改过
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/// @param previousIcon 之前的图标
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/// @param currentIcon 当前新的图标
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/// @return 修改了，则返回yes，否则返回NO
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+ (BOOL)checkIconDescriptionChangedFrom:(NSArray *)previousIcon to:(NSArray *)currentIcon {
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if (previousIcon.count != currentIcon.count) {
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return YES;
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}
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//两个数组的数量一样
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for (NSUInteger index = 0; index < previousIcon.count; index ++) {
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if ([previousIcon[index] isKindOfClass:[NSString class]]) {
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if ([previousIcon[index] isEqualToString:currentIcon[index]] == NO) {
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return YES;
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}
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} else if ([previousIcon[index] isKindOfClass:[NSNumber class]]) {
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if (fabs([previousIcon[index] doubleValue] - [currentIcon[index] doubleValue]) > 0.000001) {
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return YES;
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}
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} else {//其它数据无法比较，直接默认强制更新
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return NO;
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}
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}
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return NO;
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}
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+ (BOOL)isEqualWith:(CLLocationCoordinate2D)coord1 to:(CLLocationCoordinate2D)coord2 {
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if (fabs(coord1.latitude - coord2.latitude) > 0.000001 || fabs(coord1.longitude - coord2.longitude) > 0.000001) {
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return NO;
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}
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return YES;
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}
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+ (NSDictionary *)dictFromTouchPOI:(MATouchPoi *)poi {
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if (poi == nil) {
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return nil;
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}
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NSMutableDictionary *dict = [NSMutableDictionary dictionaryWithCapacity:3];
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if (poi.name) {
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[dict setObject:poi.name forKey:@"name"];
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}
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if (CLLocationCoordinate2DIsValid(poi.coordinate)) {
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[dict setObject:[AMapConvertUtil jsonArrayFromCoordinate:poi.coordinate] forKey:@"latLng"];
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}
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if (poi.uid) {
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[dict setObject:poi.uid forKey:@"id"];
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}
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return [dict copy];
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}
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+ (MAMapRect)mapRectFromArray:(NSArray *)array {
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NSAssert((array && [array isKindOfClass:[NSArray class]] && array.count == 2), @"解析mapRect的参数有误");
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CLLocationCoordinate2D southwest = [AMapConvertUtil coordinateFromArray:array[0]];
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CLLocationCoordinate2D northeast = [AMapConvertUtil coordinateFromArray:array[1]];
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MAMapPoint mapNorthEastPoint = MAMapPointForCoordinate(northeast);
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MAMapPoint mapSouthWestPoint = MAMapPointForCoordinate(southwest);
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double width = fabs(mapNorthEastPoint.x - mapSouthWestPoint.x);
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double height = fabs(mapNorthEastPoint.y - mapSouthWestPoint.y);
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MAMapRect limitRect = MAMapRectMake(mapSouthWestPoint.x, mapNorthEastPoint.y, width, height);
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return limitRect;
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}
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@end
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