java.lang.IllegalStateException: buildToolsVersion is not specified.解决办法

如果大家在cordova的项目中执行： cordova build android 命令，
遇到如下问题：

Error: Command failed: cd /Users/tyler/workspace/webstormspace/NewsApp/releases/dev/www && cordova build android
Failed to notify ProjectEvaluationListener.afterEvaluate(), but primary configuration failure takes precedence.
java.lang.IllegalStateException: buildToolsVersion is not specified.
at com.google.common.base.Preconditions.checkState(Preconditions.java:173)
at com.android.build.gradle.BasePlugin.createAndroidTasks(BasePlugin.java:645)
at com.android.build.gradle.BasePlugin10.call(BasePlugin.java:608)atcom.android.build.gradle.BasePlugin10.call(BasePlugin.java:605)
at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:156)
at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:120)
at com.android.build.gradle.BasePlugin.lambdacreateTasks1(BasePlugin.java:603)
at com.android.build.gradle.BasePlugin$$Lambda$29/1202404165.execute(Unknown Source)
at org.gradle.internal.event.BroadcastDispatch$ActionInvocationHandler.dispatch(BroadcastDisError: Command failed: cd /Users/tyler/workspace/webstormspace/NewsApp/releases/dev/www && cordova build android

解决办法是：

更新你的Android SDK build tools, 到最新版本即可，可能你更新了android platform。