using jsoup with proguard closing force close

Question

EDIT : MY PROGUARD VERSION IS 4.7

Today I tried include jsoup (version 1.7.1) in my android application, but it is causing me a lot of troubles. When I exported the signed apk with proguard turned on everytime my application was facing force close issues, then i disabled proguard and exported the apk and it ran perfectly. Please help me. How can I solve the error? The stacktrace is as below:

java.lang.RuntimeException: An error occured while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:278) at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273) at java.util.concurrent.FutureTask.setException(FutureTask.java:124) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307) at java.util.concurrent.FutureTask.run(FutureTask.java:137) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:107 6) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:56 9) at java.lang.Thread.run(Thread.java:856) Caused by: java.lang.ExceptionInInitializerError at org.jsoup.nodes.Document$OutputSettings.<init>(Unknown Source) at org.jsoup.nodes.Document.<init>(Unknown Source) at org.jsoup.parser.TreeBuilder.void initialiseParse(java.lang.String,java.lang. String,org.jsoup.parser.ParseErrorList)(Unknown Source) at org.jsoup.parser.TreeBuilder.org.jsoup.nodes.Document parse(java.lang.String, java.lang.String,org.jsoup.parser.ParseErrorList)(Unknown Source)                             boolean process(org.jsoup.parser.Token) at org.jsoup.parser.HtmlTreeBuilder.org.jsoup.nodes.Document parse(java.lang.Str ing,java.lang.String,org.jsoup.parser.ParseErrorList)(Unknown Source)                                 boolean process(org.jsoup.parser.Token)                                 boolean process(org.jsoup.parser.Token,org.j soup.parser.HtmlTreeBuilderState)                                 void transition(org.jsoup.parser.HtmlTreeBui lderState)                                 org.jsoup.parser.HtmlTreeBuilderState state( )                                 void framesetOk(boolean)                                 void maybeSetBaseUri(org.jsoup.nodes.Element )                                 org.jsoup.nodes.Element insert(org.jsoup.par ser.Token$StartTag)                                 org.jsoup.nodes.Element insert(java.lang.Str ing)                                 void insert(org.jsoup.parser.Token$Comment)                                 void insert(org.jsoup.parser.Token$Character )                                 boolean isElementInQueue(org.jsoup.helper.De scendableLinkedList,org.jsoup.nodes.Element)                                 void popStackToClose(java.lang.String[])                                 void insertOnStackAfter(org.jsoup.nodes.Elem ent,org.jsoup.nodes.Element)                                 void replaceInQueue(java.util.LinkedList,org .jsoup.nodes.Element,org.jsoup.nodes.Element)                                 boolean inSpecificScope(java.lang.String,jav a.lang.String[],java.lang.String[])                                 boolean inSpecificScope(java.lang.String[],j ava.lang.String[],java.lang.String[])                                 boolean inScope(java.lang.String,java.lang.S tring[])                                 void insertInFosterParent(org.jsoup.nodes.No de) at org.jsoup.parser.Parser.org.jsoup.nodes.Document parse(java.lang.String,java. lang.String)(Unknown Source) at org.jsoup.Jsoup.org.jsoup.nodes.Document parse(java.lang.String)(Unknown Sour ce) at com.my.package.name.BalCheck.void doLogin(java.lang.String,java.lang .String)(Unknown Source)                                      void checkBal()                                      void echo(java.lang.String) at com.my.package.name.BalCheck.void doCheckBalance(java.lang.String,ja va.lang.String)(Unknown Source) at com.my.package.name.SmsPage$CheckUltooBalance.java.lang.Void doInBac kground(java.lang.Void[])(Unknown Source)                                                       void onPostExecute(jav a.lang.Void) at com.my.package.name.SmsPage$CheckUltooBalance.java.lang.Object doInB ackground(java.lang.Object[])(Unknown Source) at android.os.AsyncTask$2.call(AsyncTask.java:264) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) ... 5 more Caused by: java.lang.ExceptionInInitializerError at org.jsoup.nodes.Entities$EscapeMode.<clinit>(Unknown Source) ... 18 more Caused by: java.lang.NullPointerException at java.util.Properties.load(Properties.java:246) at org.jsoup.nodes.Entities.java.util.Map loadEntities(java.lang.String)(Unknown  Source) at org.jsoup.nodes.Entities.<clinit>(Unknown Source) ... 19 more 

Answer 1

The solution posted by @Erdem in a comment above seems to be the best one. I'm reposting it as an answer for visibility.

Add the line below to your proguard file

-keeppackagenames org.jsoup.nodes 

This seems to be enough

Answer 2

You can go to jsoup with proguard to find answer, which is to add the following to proguard-project.txt:

-keep public class org.jsoup.** { public *; }