init

app/src/main/java/com/base/locationsharewhite/map/MapUtils.kt

 package com.base.locationsharewhite.map
 
+import android.annotation.SuppressLint
 import android.content.Context
+import android.location.Criteria
+import android.location.Location
+import android.location.LocationManager
 import android.view.View
 import com.base.locationsharewhite.utils.BitmapUtils.getBitmapDescriptorFromLayoutResId
 import com.google.android.gms.maps.CameraUpdateFactory
 import com.google.android.gms.maps.GoogleMap
 import com.google.android.gms.maps.model.LatLng
+import com.google.android.gms.maps.model.LatLngBounds
 import com.google.android.gms.maps.model.MarkerOptions
+import kotlin.math.abs
+
 
 object MapUtils {
 
+
+    @SuppressLint("MissingPermission")
+    fun Context.getLastKnowLatLng(): LatLng {
+        val locationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager?
+        if (locationManager != null) {
+            val provider: String? = locationManager.getBestProvider(Criteria(), true)
+
+            if (provider != null) {
+                val lastKnownLocation: Location? = locationManager.getLastKnownLocation(provider)
+                val latitude: Double = lastKnownLocation?.latitude ?: 0.0//维度
+                val longitude: Double = lastKnownLocation?.longitude ?: 0.0//经度
+                return LatLng(latitude, longitude)
+            }
+        }
+
+        return LatLng(0.0, 0.0)
+    }
+
+    /**
+     * 添加view为Marker
+     */
     fun GoogleMap.addLocationMarker(
         marker: View,
-        pair: Pair<Double, Double>,
+        latLng: LatLng,
         tittle: String = "",
     ) {
-        val latLng = LatLng(pair.first, pair.second)
         val bitmapDescriptor = getBitmapDescriptorFromLayoutResId(marker)
         addMarker(
             MarkerOptions()
@@ -26,11 +53,11 @@ object MapUtils {
 
     }
 
-    fun GoogleMap.moveCameraZoom(
-        pair: Pair<Double, Double>,
-        zoom: Float = 15f
-    ) {
-        val latLng = LatLng(pair.first, pair.second)
-        moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, zoom))
+    fun GoogleMap.cameraMovePointsBounds(point1: LatLng, point2: LatLng, padding: Int) {
+        // 创建包含两个点的边界
+        val bounds = LatLngBounds.Builder().include(point1).include(point2).build()
+        moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, padding))
     }
+
+
 }
\ No newline at end of file

app/src/main/java/com/base/locationsharewhite/ui/locationmap/LocationMapActivity.kt

 package com.base.locationsharewhite.ui.locationmap
 
 import android.graphics.Color
+import android.view.LayoutInflater
 import androidx.activity.addCallback
+import com.base.locationsharewhite.R
 import com.base.locationsharewhite.databinding.ActivityLocationMapBinding
 import com.base.locationsharewhite.helper.BaseActivity
+import com.base.locationsharewhite.map.MapUtils.addLocationMarker
+import com.base.locationsharewhite.map.MapUtils.cameraMovePointsBounds
+import com.base.locationsharewhite.map.MapUtils.getLastKnowLatLng
 import com.base.locationsharewhite.utils.BarUtils
+import com.base.locationsharewhite.utils.LogEx
+import com.google.android.gms.maps.GoogleMap
+import com.google.android.gms.maps.OnMapReadyCallback
+import com.google.android.gms.maps.SupportMapFragment
+import com.google.android.gms.maps.model.LatLng
 
-class LocationMapActivity : BaseActivity<ActivityLocationMapBinding>() {
+class LocationMapActivity : BaseActivity<ActivityLocationMapBinding>(), OnMapReadyCallback {
+
+    private val TAG = "LocationMapActivity"
+    private var map: GoogleMap? = null
 
     override val binding: ActivityLocationMapBinding by lazy {
         ActivityLocationMapBinding.inflate(layoutInflater)
@@ -18,6 +31,10 @@ class LocationMapActivity : BaseActivity<ActivityLocationMapBinding>() {
         BarUtils.setStatusBarColor(this, Color.TRANSPARENT)
 //        binding.root.updatePadding(top = BarUtils.getStatusBarHeight())
 
+
+        val mapFragment =
+            supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment?
+        mapFragment?.getMapAsync(this)
     }
 
     override fun initListener() {
@@ -30,4 +47,31 @@ class LocationMapActivity : BaseActivity<ActivityLocationMapBinding>() {
         }
     }
 
+    override fun onMapReady(googleMap: GoogleMap) {
+        map = googleMap
+
+
+        val sydney = LatLng(-33.87365, 151.20689)
+        showMeAndFriendLocation(sydney)
+
+        val chunxilu = LatLng(30.655782251943407, 104.07701072527895)
+//        showMeAndFriendLocation(chunxilu)
+    }
+
+
+    private fun showMeAndFriendLocation(friendLatLng: LatLng) {
+        val myPair: LatLng = getLastKnowLatLng()
+        LogEx.logDebug(TAG, "getLastKnowLocation ${myPair.latitude} ${myPair.longitude}")
+
+        val myAvatar = LayoutInflater.from(this).inflate(R.layout.avatar_me, null)
+        val friendAvatar = LayoutInflater.from(this).inflate(R.layout.avatar_friend, null)
+
+        map?.addLocationMarker(myAvatar, myPair, "my")
+        map?.addLocationMarker(friendAvatar, friendLatLng, "friend")
+
+        val padding = resources.getDimensionPixelOffset(R.dimen.dp_150)
+        map?.cameraMovePointsBounds(myPair, friendLatLng, padding)
+
+    }
+
 }
\ No newline at end of file

app/src/main/java/com/base/locationsharewhite/ui/main/MainActivity.kt

@@ -11,21 +11,17 @@ import com.base.locationsharewhite.databinding.ActivityMainBinding
 import com.base.locationsharewhite.helper.BaseActivity
 import com.base.locationsharewhite.helper.MyApplication
 import com.base.locationsharewhite.map.MapUtils.addLocationMarker
-import com.base.locationsharewhite.map.MapUtils.moveCameraZoom
+import com.base.locationsharewhite.map.MapUtils.getLastKnowLatLng
 import com.base.locationsharewhite.ui.howuse.HowUseActivity
 import com.base.locationsharewhite.ui.locationmap.LocationMapActivity
 import com.base.locationsharewhite.ui.set.SettingActivity
 import com.base.locationsharewhite.utils.BarUtils
-import com.base.locationsharewhite.utils.LocationUtils.getLastKnowLocation
 import com.base.locationsharewhite.utils.LogEx
 import com.base.locationsharewhite.utils.PermissionUtils.checkLocationPermission
 import com.google.android.gms.maps.CameraUpdateFactory
 import com.google.android.gms.maps.GoogleMap
 import com.google.android.gms.maps.OnMapReadyCallback
 import com.google.android.gms.maps.SupportMapFragment
-import com.google.android.gms.maps.model.BitmapDescriptorFactory
-import com.google.android.gms.maps.model.LatLng
-import com.google.android.gms.maps.model.MarkerOptions
 
 class MainActivity : BaseActivity<ActivityMainBinding>(), OnMapReadyCallback {
 
@@ -103,12 +99,12 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), OnMapReadyCallback {
     override fun onMapReady(googleMap: GoogleMap) {
         map = googleMap
 
-        val pair = getLastKnowLocation()
-        LogEx.logDebug(TAG, "getLastKnowLocation ${pair.first} ${pair.second}")
+        val latLng = getLastKnowLatLng()
+        LogEx.logDebug(TAG, "getLastKnowLocation ${latLng.latitude} ${latLng.longitude}")
 
         val myAvatar = LayoutInflater.from(this).inflate(R.layout.avatar_me, null)
 
-        map?.moveCameraZoom(pair)
-        map?.addLocationMarker(myAvatar, pair, "my")
+        map?.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 15f))
+        map?.addLocationMarker(myAvatar, latLng, "my")
     }
 }
\ No newline at end of file

app/src/main/java/com/base/locationsharewhite/utils/LocationUtils.kt

-package com.base.locationsharewhite.utils
-
-import android.annotation.SuppressLint
-import android.content.Context
-import android.location.Criteria
-import android.location.Location
-import android.location.LocationManager
-import androidx.core.content.ContextCompat
-
-
-object LocationUtils {
-
-
-    @SuppressLint("MissingPermission")
-    fun Context.getLastKnowLocation(): Pair<Double, Double> {
-        val locationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager?
-        if (locationManager != null) {
-            val provider: String? = locationManager.getBestProvider(Criteria(), true)
-
-            if (provider != null) {
-                val lastKnownLocation: Location? = locationManager.getLastKnownLocation(provider)
-                val latitude: Double = lastKnownLocation?.latitude ?: 0.0//维度
-                val longitude: Double = lastKnownLocation?.longitude ?: 0.0//经度
-                return Pair(latitude, longitude)
-            }
-        }
-
-        return Pair(0.0, 0.0)
-    }
-}
\ No newline at end of file

app/src/main/res/layout/avatar_friend.xml

+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content">
+
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:src="@mipmap/dingweibg"
+        tools:ignore="ContentDescription" />
+
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:layout_marginTop="8dp"
+        android:src="@mipmap/friend"
+        tools:ignore="ContentDescription" />
+
+</FrameLayout>
\ No newline at end of file

app/src/main/res/values/dimens.xml

@@ -5,4 +5,8 @@
     <dimen name="dp_5">5dp</dimen>
     <dimen name="dp_10">10dp</dimen>
     <dimen name="dp_320">320dp</dimen>
+    <dimen name="dp_30">30dp</dimen>
+    <dimen name="dp_100">100dp</dimen>
+    <dimen name="dp_200">200dp</dimen>
+    <dimen name="dp_150">150dp</dimen>
 </resources>
\ No newline at end of file