参照以下链接：
https://blog.csdn.net/qq_20264891/article/details/79319408
当 cordova 项目安装的 android 平台版本 与 系统安装的 Android SDK 版本不一致时，打包失败！！！
解决方案：
增加显示、删除、添加 android 库的命令：
显示cordova当前已添加的平台及版本：
ionic cordova platform ls
F:\GitCode\myApp>ionic cordova platform ls
> cordova platform ls
Installed platforms:
android 6.0.0
Available platforms:
browser ~5.0.1
ios ~4.5.4
osx ~4.0.1
windows ~6.0.0
删除当前平台
ionic cordova platform rm android
F:\GitCode\myApp>ionic cordova platform rm android
> cordova platform remove android --save
Removing platform android from config.xml file...
Removing android from cordova.platforms array in package.json
添加android平台最新版（安装的android@7.1.1，对应的Android SDK android-27）
ionic cordova platform add android
F:\GitCode\myApp>ionic cordova platform add android
> cordova platform add android --save
Using cordova-fetch for cordova-android@~7.1.1
Adding android project...
Creating Cordova project for the Android platform:
Path: platforms\android
Package: io.ionic.starter
Name: myApp
Activity: MainActivity
Android target: android-27
Android project created with cordova-android@7.1.1
Android Studio project detected
Android Studio project detected
Installing "cordova-plugin-device" for android
Installing "cordova-plugin-ionic-keyboard" for android
Installing "cordova-plugin-ionic-webview" for android
Subproject Path: CordovaLib
Subproject Path: app
Installing "cordova-plugin-splashscreen" for android
Installing "cordova-plugin-statusbar" for android
Installing "cordova-plugin-whitelist" for android This plugin is only applicable for versions of cordova-android g
eater than 4.0. If you have a previous platform version, you do *not* need this
plugin since the whitelist will be built in. --save flag or autosave detected
Saving android@~7.1.1 into config.xml file ...
添加android平台指定新版（安装的android@6.0.0，对应的Android SDK android-24，当前系统已经安装了对应版本的Android SDK，会执行对应的编译操作）
ionic cordova platform add android@6.0.0
F:\GitCode\myApp>ionic cordova platform add android@6.0.0
> cordova platform add android@6.0.0 --save
Using cordova-fetch for cordova-android@6.0.0
Adding android project...
Creating Cordova project for the Android platform:
Path: platforms\android
Package: io.ionic.starter
Name: myApp
Activity: MainActivity
Android target: android-24
Subproject Path: CordovaLib
Android project created with cordova-android@6.0.0
Installing "cordova-plugin-device" for android
ANDROID_HOME=F:\android-sdk-windows
JAVA_HOME=C:\Program Files\Java\jdk1.8.0
Subproject Path: CordovaLib
Incremental java compilation is an incubating feature.
:clean
:CordovaLib:clean BUILD SUCCESSFUL Total time: 2.923 secs
Installing "cordova-plugin-ionic-keyboard" for android
ANDROID_HOME=F:\android-sdk-windows
JAVA_HOME=C:\Program Files\Java\jdk1.8.0
Subproject Path: CordovaLib
Incremental java compilation is an incubating feature.
:clean
:CordovaLib:clean BUILD SUCCESSFUL Total time: 3.168 secs
Installing "cordova-plugin-ionic-webview" for android
Plugin doesn't support this project's cordova-android version. cordova-android:
6.0.0, failed version requirement: >=6.4.0
Skipping 'cordova-plugin-ionic-webview' for android
Installing "cordova-plugin-splashscreen" for android
ANDROID_HOME=F:\android-sdk-windows
JAVA_HOME=C:\Program Files\Java\jdk1.8.0
Subproject Path: CordovaLib
Incremental java compilation is an incubating feature.
:clean
:CordovaLib:clean BUILD SUCCESSFUL Total time: 3.04 secs
Installing "cordova-plugin-statusbar" for android
ANDROID_HOME=F:\android-sdk-windows
JAVA_HOME=C:\Program Files\Java\jdk1.8.0
Subproject Path: CordovaLib
Incremental java compilation is an incubating feature.
:clean
:CordovaLib:clean BUILD SUCCESSFUL Total time: 2.837 secs
Installing "cordova-plugin-whitelist" for android
ANDROID_HOME=F:\android-sdk-windows
JAVA_HOME=C:\Program Files\Java\jdk1.8.0
Subproject Path: CordovaLib
Incremental java compilation is an incubating feature.
:clean
:CordovaLib:clean BUILD SUCCESSFUL Total time: 2.666 secs This plugin is only applicable for versions of cordova-android gr
eater than 4.0. If you have a previous platform version, you do *not* need this
plugin since the whitelist will be built in. --save flag or autosave detected
Saving android@~6.0.0 into config.xml file ...
最后打包安卓apk:（未签名版本编译成功的效果）
ionic cordova build android --release
F:\GitCode\myApp>ionic cordova build android --release
> ng run app:ionic-cordova-build --platform=android Date: 2018-10-23T08:40:55.031Z
Hash: bf05a92055d1e7f9f1aa
Time: 26064ms
chunk {common} common.js, common.js.map (common) 15 kB [rendered]
chunk {87} 87.js, 87.js.map () 36.2 kB [rendered]
chunk {cordova} cordova.js, cordova.js.map (cordova) 72.8 kB [rendered]
chunk {0} 0.js, 0.js.map () 18.6 kB [rendered]
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chunk {main} main.js, main.js.map (main) 142 kB [initial] [rendered]
chunk {160} 160.js, 160.js.map () 2.36 kB [rendered]
chunk {polyfills} polyfills.js, polyfills.js.map (polyfills) 227 kB [initial] [r
endered]
chunk {runtime} runtime.js, runtime.js.map (runtime) 9.06 kB [entry] [rendered]
chunk {styles} styles.js, styles.js.map (styles) 35.8 kB [initial] [rendered]
chunk {tabs-tabs-module} tabs-tabs-module.js, tabs-tabs-module.js.map (tabs-tabs
-module) 25.9 kB [rendered]
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> cordova build android --release
ANDROID_HOME=F:\android-sdk-windows
JAVA_HOME=C:\Program Files\Java\jdk1.8.0
Subproject Path: CordovaLib
Incremental java compilation is an incubating feature.
:preBuild UP-TO-DATE
:preReleaseBuild UP-TO-DATE
:checkReleaseManifest
:CordovaLib:preBuild UP-TO-DATE
:CordovaLib:preReleaseBuild UP-TO-DATE
:CordovaLib:checkReleaseManifest
:CordovaLib:prepareReleaseDependencies
:CordovaLib:compileReleaseAidl
:CordovaLib:compileReleaseNdk UP-TO-DATE
:CordovaLib:compileLint
:CordovaLib:copyReleaseLint UP-TO-DATE
:CordovaLib:mergeReleaseShaders
:CordovaLib:compileReleaseShaders
:CordovaLib:generateReleaseAssets
:CordovaLib:mergeReleaseAssets
:CordovaLib:mergeReleaseProguardFiles
:CordovaLib:packageReleaseRenderscript UP-TO-DATE
:CordovaLib:compileReleaseRenderscript
:CordovaLib:generateReleaseResValues
:CordovaLib:generateReleaseResources
:CordovaLib:packageReleaseResources
:CordovaLib:processReleaseManifest
:CordovaLib:generateReleaseBuildConfig
:CordovaLib:processReleaseResources
:CordovaLib:generateReleaseSources
:CordovaLib:incrementalReleaseJavaCompilationSafeguard
:CordovaLib:compileReleaseJavaWithJavac
:CordovaLib:compileReleaseJavaWithJavac - is not incremental (e.g. outputs have
changed, no previous execution, etc.).
ע: ijЩ�����ļ�ʹ�û�����ѹ�ʱ�� API��
ע: �й���ϸ��Ϣ, ��ʹ�� -Xlint:deprecation ���±��롣
:CordovaLib:processReleaseJavaRes UP-TO-DATE
:CordovaLib:transformResourcesWithMergeJavaResForRelease
:CordovaLib:transformClassesAndResourcesWithSyncLibJarsForRelease
:CordovaLib:mergeReleaseJniLibFolders
:CordovaLib:transformNative_libsWithMergeJniLibsForRelease
:CordovaLib:transformNative_libsWithSyncJniLibsForRelease
:CordovaLib:bundleRelease
:prepareAndroidCordovaLibUnspecifiedReleaseLibrary
:prepareReleaseDependencies
:compileReleaseAidl
:compileReleaseRenderscript
:generateReleaseBuildConfig
:generateReleaseResValues
:generateReleaseResources
:mergeReleaseResources
:processReleaseManifest
:processReleaseResources
:generateReleaseSources
:incrementalReleaseJavaCompilationSafeguard
:compileReleaseJavaWithJavac
:compileReleaseJavaWithJavac - is not incremental (e.g. outputs have changed, no
previous execution, etc.).
ע: F:\GitCode\myApp\platforms\android\src\org\apache\cordova\splashscreen\Splash
Screen.javaʹ�û�����ѹ�ʱ�� API��
ע: �й���ϸ��Ϣ, ��ʹ�� -Xlint:deprecation ���±��롣
:compileReleaseNdk UP-TO-DATE
:compileReleaseSources
:lintVitalRelease
:mergeReleaseShaders
:compileReleaseShaders
:generateReleaseAssets
:mergeReleaseAssets
:transformClassesWithDexForRelease
:mergeReleaseJniLibFolders
:transformNative_libsWithMergeJniLibsForRelease
:processReleaseJavaRes UP-TO-DATE
:transformResourcesWithMergeJavaResForRelease
:packageRelease
:assembleRelease
:cdvBuildRelease BUILD SUCCESSFUL Total time: 22.363 secs
Built the following apk(s):
F:/GitCode/myApp/platforms/android/build/outputs/apk/android-release-uns
igned.apk