谷歌地图插件cordova无法加载getMap（）

Question

之前的一切都有效。但突然之间，它显示白屏并将其抛到错误之下。

  

getMap未定义

buildscript {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
    dependencies {
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath 'com.android.tools.build:gradle:3.0.1'
        classpath 'com.google.gms:google-services:3.0.0'
    }
}

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
    //This replaces project.properties w.r.t. build settings
    project.ext {
      defaultBuildToolsVersion="'26.0.2'" //String
      defaultMinSdkVersion=19 //Integer - Minimum requirement is Android 4.4
      defaultTargetSdkVersion=26 //Integer - We ALWAYS target the latest by default
      defaultCompileSdkVersion=26 //Integer - We ALWAYS compile with the latest by default
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

Answer 1

platform/android/app/build.gradle的依赖部分可能是这样的：

dependencies {
    implementation fileTree(dir: 'libs', include: '*.jar')
    // SUB-PROJECT DEPENDENCIES START
    implementation(project(path: ":CordovaLib"))
    compile "com.google.android.gms:play-services-maps:12.0.0"
    compile "com.google.android.gms:play-services-location:12.0.0"
    compile "com.android.support:support-core-utils:24.1.0"
    compile "com.google.gms:google-services:+"
    compile "com.google.android.gms:play-services-tagmanager:+"
    compile "com.google.firebase:firebase-core:+"
    compile "com.google.firebase:firebase-messaging:+"
    compile "com.google.firebase:firebase-crash:+"
    compile "com.google.firebase:firebase-config:+"
    // SUB-PROJECT DEPENDENCIES END
}

问题是某些插件指定+，但地图插件指定12.0.0（或者其他版本）

版本号+是非常危险的关键字。 当您指定+时，gradle会在构建时使用最新版本，但有时它不起作用。这就是地图插件指定特定版本的原因，但您可以使用--variable指定版本。

您需要修改build.grale文件。指定使用Google Play Services SDK的所有依赖项的相同版本。

例如：

dependencies {
    implementation fileTree(dir: 'libs', include: '*.jar')
    // SUB-PROJECT DEPENDENCIES START
    implementation(project(path: ":CordovaLib"))
    compile "com.google.android.gms:play-services-maps:12.0.1"
    compile "com.google.android.gms:play-services-location:12.0.1"
    compile "com.android.support:support-core-utils:24.1.0"
    compile "com.google.android.gms:play-services-tagmanager:12.0.1"
    compile "com.google.firebase:firebase-core:12.0.1"
    compile "com.google.firebase:firebase-messaging:12.0.1"
    compile "com.google.firebase:firebase-crash:12.0.1"
    compile "com.google.firebase:firebase-config:12.0.1"
    // SUB-PROJECT DEPENDENCIES END
}

顺便说一下com.google.gms:google-services:+安装所有包。这会增加apk文件的大小。它会引起麻烦。我建议删除它。

<强>更新 由于同样的原因，也应删除classpath 'com.google.gms:google-services:3.0.0'。