问题概述：
在新建Android程序的时候出现以下错误：
找不到 \android-sdk-windows\tools\lib\proguard.cfg文件
原因：
SDK不完整。
解决方法：
方法一
可在 \android-sdk-windows\tools\lib\目录下新建一个proguard.cfg文件
然后添下以下内容：
-optimizationpasses 5-dontusemixedcaseclassnames-dontskipnonpubliclibraryclasses-dontpreverify-verbose-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*-keep public class * extends android.app.Activity-keep public class * extends android.app.Application-keep public class * extends android.app.Service-keep public class * extends android.content.BroadcastReceiver-keep public class * extends android.content.ContentProvider-keep public class com.android.vending.licensing.ILicensingService-keepclasseswithmembernames class * { native <methods>;}-keepclasseswithmembernames class * { public <init>(android.content.Context, android.util.AttributeSet);}-keepclasseswithmembernames class * { public <init>(android.content.Context, android.util.AttributeSet, int);}-keepclassmembers enum * { public static **[] values(); public static ** valueOf(java.lang.String);}-keep class * implements android.os.Parcelable { public static final android.os.Parcelable$Creator *;}方法二
通过Android SDK and AVD Manager更新所有SDK。