java - 经纬度 : Check whether a given point of LatLng is within a 5km radius of another point

Question

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Answer 1

Location类具有计算点之间距离的方法

第一个选项(使用 distanceTo 方法):

// firstLocation and secondLocation are Location class instances
float distance = firstLocation.distanceTo(secondLocation); // distance in meters

if (distance < 5000) {
    // distance between first and second location is less than 5km
}

第二个选项(使用静态 distanceBetween 方法):

// distance is stored in result array at index 0
float[] result = new float[1];
Location.distanceBetween (startLat, startLng, endLat, endLng, result);

if (result[0] < 5000) {
    // distance between first and second location is less than 5km
}