谷歌地图已连接但未显示任何内容(Kotlin Android Studio)

Question

调试Logcat 中的错误

显示屏运行应用程序时

Google地图Xml:<string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">XXX_MY_API_KEY_XXX</string>中的API密钥

清单文件中的API密钥

主要活动

package org.classapp.test2
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
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.LatLng
import com.google.android.gms.maps.model.MarkerOptions
import org.classapp.test2.databinding.ActivityMapsBinding
class MapsActivity : AppCompatActivity(), OnMapReadyCallback {
private lateinit var mMap: GoogleMap
private lateinit var binding: ActivityMapsBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMapsBinding.inflate(layoutInflater)
setContentView(binding.root)
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
val mapFragment = supportFragmentManager
.findFragmentById(R.id.map) as SupportMapFragment
mapFragment.getMapAsync(this)
}
override fun onMapReady(googleMap: GoogleMap) {
mMap = googleMap
// Add a marker in Sydney and move the camera
val sydney = LatLng(-34.0, 151.0)
mMap.addMarker(MarkerOptions().position(sydney).title("Marker in Sydney"))
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney))
}
}

清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.classapp.test2">

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET"/>

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.Test2">

<meta-data android:name="com.google.android.geo.API_KEY" android:value="YOUR_API_KEY" />
<activity
android:name=".MapsActivity"
android:exported="true"
android:label="@string/title_activity_maps">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

谷歌Api文件

<resources>

<string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">YOUR_API_KEY</string>
</resources>

渐变文件

plugins {
id 'com.android.application'
id 'kotlin-android'
}
android {
compileSdk 32
defaultConfig {
applicationId "org.classapp.test2"
minSdk 22
targetSdk 32
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
buildFeatures {
viewBinding true
}
}
dependencies {
implementation 'androidx.core:core-ktx:1.7.0'
implementation 'androidx.appcompat:appcompat:1.4.1'
implementation 'com.google.android.material:material:1.5.0'
implementation 'com.google.android.gms:play-services-maps:18.0.2'
implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
implementation 'com.google.android.gms:play-services-maps:18.0.2'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}

我遵循谷歌地图活动给出的指示，但在运行应用程序时，屏幕不会显示地图。

我刚刚添加了这个项目的所有代码，我不确定哪里出了问题。。。我试着调试，得到了错误显示在我张贴在上面的照片中

Answer 1

您可以：

• 在清单文件中添加Internet权限。缺少权限时有时会发生这种情况。

• 手动添加密钥，而不是清单中的xml文件

<meta-data android:name="com.google.android.geo.API_KEY" android:value="AIzxxxxxxxxxxxxxxxxxxxxxxxkey" />