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一、Android:（红色方法为主调函数，输入原始经纬度，输出纠偏后的经纬度）
final static double pi = 3.14159265358979324;
final static double a = 6378245.0;
final static double ee = 0.00669342162296594323;
public static double[] transform(double wgLat, double wgLon) {
double[] latlng = new double[2] ;
if (outOfChina(wgLat, wgLon)) {
latlng[0] = wgLat;
latlng[1] = wgLon;
return latlng ;
}
double dLat = transformLat(wgLon - 105.0, wgLat - 35.0);
double dLon = transformLon(wgLon - 105.0, wgLat - 35.0);
double radLat = wgLat / 180.0 * pi;
double magic = Math.sin(radLat);
magic = 1 - ee * magic * magic;
double sqrtMagic = Math.sqrt(magic);
dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
latlng[0] = wgLat + dLat;
latlng[1] = wgLon + dLon;
return latlng ;
}
private static boolean outOfChina(double lat, double lon) {
if (lon < 72.004 || lon > 137.8347)
return true;
if (lat < 0.8293 || lat > 55.8271)
return true;
return false;
}
private static double transformLat(double x, double y) {
double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
+ 0.2 * Math.sqrt(Math.abs(x));
ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;
ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
return ret;
}
private static double transformLon(double x, double y) {
double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1
* Math.sqrt(Math.abs(x));
ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0;
ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0
* pi)) * 2.0 / 3.0;
return ret;
}
二、IOS（红色方法为主调函数，输入原始经纬度，输出纠偏后的经纬度）
const double a = 6378245.0;
const double ee = 0.00669342162296594323;
const double pi = 3.14159265358979324;
+(double *)transformFromWGSToGCJ:(double)longitude and:(double)latitude
{
if([self isLocationOutOfChina:longitude and:latitude]){
double are[] = {longitude ,latitude} ;
return are ;
}else{
double adjustLat = [self transformLatWithX:longitude - 105.0 withY:latitude - 35.0];
double adjustLon = [self transformLonWithX:longitude - 105.0 withY:latitude - 35.0];
double radLat = latitude / 180.0 * pi;
double magic = sin(radLat);
magic = 1 - ee * magic * magic;
double sqrtMagic = sqrt(magic);
adjustLat = (adjustLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
adjustLon = (adjustLon * 180.0) / (a / sqrtMagic * cos(radLat) * pi);
double jiupian_longitude = longitude + adjustLon ;
double jiupian_latitude= latitude + adjustLat ;
double are[] = {jiupian_longitude ,jiupian_latitude} ;
return are ;
}
}
//判断是不是在中国
+(BOOL)isLocationOutOfChina:(double)longitude and:(double)latitude
{
if (longitude < 72.004 || longitude > 137.8347 || latitude < 0.8293 ||latitude > 55.8271)
return YES;
return NO;
}
+(double)transformLatWithX:(double)x withY:(double)y
{
double lat = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * sqrt(abs(x));
lat += (20.0 * sin(6.0 * x * pi) + 20.0 *sin(2.0 * x * pi)) * 2.0 / 3.0;
lat += (20.0 * sin(y * pi) + 40.0 * sin(y / 3.0 * pi)) * 2.0 / 3.0;
lat += (160.0 * sin(y / 12.0 * pi) + 320 * sin(y *pi / 30.0)) * 2.0 / 3.0;
return lat;
}
+(double)transformLonWithX:(double)x withY:(double)y
{
double lon = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * sqrt(abs(x));
lon += (20.0 * sin(6.0 * x * pi) + 20.0 * sin(2.0 * x * pi)) * 2.0 / 3.0;
lon += (20.0 * sin(x * pi) + 40.0 * sin(x / 3.0 * pi)) * 2.0 / 3.0;
lon += (150.0 * sin(x / 12.0 * pi) + 300.0 * sin(x / 30.0 * pi)) * 2.0 / 3.0;
return lon;
}
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