Clear android application user data

Question

Using adb shell to clear application data  adb shell pm clear com android browser   But when executing that command from application   String deleteCmd    pm clear com android browser                 Runtime runtime   Runtime getRuntime            try               runtime exec deleteCmd             catch  IOException e                e printStackTrace                                Issue   It doesn t clear the user data neither gives any exception though I have given the following permission     lt uses-permission android name  android permission CLEAR APP USER DATA   gt    Question   How to clear the application data using adb shell

User · Answer

Hello UdayaLakmal   public class MyApplication extends Application       private static MyApplication instance        Override     public void onCreate             super onCreate            instance   this             public static MyApplication getInstance            return instance             public void clearApplicationData             File cache   getCacheDir            File appDir   new File cache getParent             if appDir exists                 String   children   appDir list                for String s   children                   if  s equals  lib                         deleteDir new File appDir  s                        Log i  TAG    File  data data APP PACKAGE     s    DELETED                                                         public static boolean deleteDir File dir            if  dir    null  amp  amp  dir isDirectory                  String   children   dir list                for  int i   0  i  lt  children length  i                      boolean success   deleteDir new File dir  children i                     if   success                        return false                                                     return dir delete              Please check this and let me know     You can download code from here

User · Answer

This command worked for me  adb shell pm clear packageName

User · Answer

The command pm clear com android browser requires root permission  So  run su first   Here is the sample code   private static final String CHARSET NAME    UTF-8   String cmd    pm clear com android browser    ProcessBuilder pb   new ProcessBuilder   redirectErrorStream true  command  su    Process p   pb start        We must handle the result stream in another Thread first StreamReader stdoutReader   new StreamReader p getInputStream    CHARSET NAME   stdoutReader start     out   p getOutputStream    out write  cmd     n   getBytes CHARSET NAME    out write   exit      n   getBytes CHARSET NAME    out flush     p waitFor    String result   stdoutReader getResult      The class StreamReader   import java io IOException  import java io InputStream  import java io InputStreamReader  import java util concurrent CountDownLatch   class StreamReader extends Thread       private InputStream is      private StringBuffer mBuffer      private String mCharset      private CountDownLatch mCountDownLatch       StreamReader InputStream is  String charset            this is   is          mCharset   charset          mBuffer   new StringBuffer              mCountDownLatch   new CountDownLatch 1              String getResult             try               mCountDownLatch await              catch  InterruptedException e                e printStackTrace                      return mBuffer toString                Override     public void run             InputStreamReader isr   null          try               isr   new InputStreamReader is  mCharset               int c   -1              while   c   isr read       -1                    mBuffer append  char  c                            catch  IOException e                e printStackTrace              finally               try                   if  isr    null                      isr close                  catch  IOException e                    e printStackTrace                              mCountDownLatch countDown

User · Answer

To clear Application Data Please Try this way       public void clearApplicationData         File cache   getCacheDir        File appDir   new File cache getParent         if  appDir exists              String   children   appDir list            for  String s   children                if   s equals  lib                      deleteDir new File appDir  s   Log i  TAG                     File  data data APP PACKAGE     s     DELETED                                                         public static boolean deleteDir File dir        if  dir    null  amp amp  amp amp  dir isDirectory              String   children   dir list            for  int i   0  i  lt  children length  i                  boolean success   deleteDir new File dir  children i                 if   success                    return false                                     return dir delete

User · Answer

If you want to do manually then You also can clear your user data by clicking    Clear Data     button in Settings    gt Applications    gt Manage Aplications    gt   YOUR APPLICATION   or Is there any other way to do that    Then  Download code here

User · Answer

Afaik the Browser application data is NOT clearable for other apps  since it is store in private mode  So executing this command could probalby only work on rooted devices  Otherwise you should try another approach

User · Answer

To delete all the folders and files within folders recursively File sdDir   new File sdPath    if sdDir exists        deleteRecursive sdDir          Delete any folder on a device if exists void deleteRecursive File fileOrDirectory        if  fileOrDirectory isDirectory        for  File child   fileOrDirectory listFiles            deleteRecursive child        fileOrDirectory delete

[android] Clear android application user data

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