封装混淆时报：Conversion to Dalvik format failed with error 1
在Android程序打包混淆时，遇到这个很郁闷的错误：Conversion to Dalvik format failed with error 1
百度了下，都说是升级SDK的事，可是我也没升级SDK，后来终于找到了解决的方法，记下载，省得以后再次遇到：
在android-sdk-windows\tools\proguard\bin目录找到： proguard.bat
@ECHO OFF
REM Start-up script for ProGuard -- free class file shrinker, optimizer,
REM obfuscator, and preverifier for Java bytecode.
rem Change current directory and drive to where the script is, to avoid
rem issues with directories containing whitespaces.
cd /d %~dp0
IF EXIST "%PROGUARD_HOME%" GOTO home
SET PROGUARD_HOME=..
:home
set java_exe=
call "%PROGUARD_HOME%"\..\lib\find_java.bat
call %java_exe% -jar "%PROGUARD_HOME%"\lib\proguard.jar %*
把
call %java_exe% -jar "%PROGUARD_HOME%"\lib\proguard.jar %*
改为：
call %java_exe% -jar "%PROGUARD_HOME%"\lib\proguard.jar %1 %2 %3 %4 %5 %6 %7 %8 %9
即可！