title: ProGuard with Android: java.lang.NoSuchMethodError: android.util.Xml.asAttributeSet
body: <p>My app runs normally when ProGuard is disabled.</p>
  
  <p>After ProGuard is enabled, the app is exported into apk and installed into emulator.</p>
  
  <p>Then when I run it in emulator, force close...</p>
  
  <pre><code>05-10 11:14:10.582: E/AndroidRuntime(759): FATAL EXCEPTION: main
  05-10 11:14:10.582: E/AndroidRuntime(759): java.lang.NoSuchMethodError: android.util.Xml.asAttributeSet
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.actionbarsherlock.view.MenuInflater.inflate(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.g.myapp.e.onCreateOptionsMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.support.v4.app.Watson.onCreatePanelMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.actionbarsherlock.ActionBarSherlock.callbackCreateOptionsMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.actionbarsherlock.internal.ActionBarSherlockNative.dispatchCreateOptionsMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.actionbarsherlock.app.SherlockFragmentActivity.onCreatePanelMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:393)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.android.internal.policy.impl.PhoneWindow.invalidatePanelMenu(PhoneWindow.java:747)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.actionbarsherlock.internal.ActionBarSherlockNative.dispatchInvalidateOptionsMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.actionbarsherlock.app.SherlockFragmentActivity.invalidateOptionsMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.actionbarsherlock.app.SherlockFragmentActivity.supportInvalidateOptionsMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.support.v4.app.Fragment.setHasOptionsMenu(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.g.myapp.e.onCreate(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.support.v4.app.FragmentManagerImpl.moveToState(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.support.v4.app.BackStackRecord.run(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.support.v4.app.FragmentManagerImpl.execPendingActions(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.g.myapp.n.onTabChanged(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.widget.TabHost.invokeOnTabChangeListener(TabHost.java:391)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.widget.TabHost.setCurrentTab(TabHost.java:376)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.widget.TabHost.addTab(TabHost.java:236)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.g.myapp.n.a(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.g.myapp.MainActivity.onCreate(Unknown Source)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.app.Activity.performCreate(Activity.java:5008)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.app.ActivityThread.access$600(ActivityThread.java:130)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.os.Handler.dispatchMessage(Handler.java:99)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.os.Looper.loop(Looper.java:137)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at android.app.ActivityThread.main(ActivityThread.java:4745)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at java.lang.reflect.Method.invokeNative(Native Method)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at java.lang.reflect.Method.invoke(Method.java:511)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
  05-10 11:14:10.582: E/AndroidRuntime(759):  at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>proguard-project.txt:</p>
  
  <pre><code>-keep class android.support.v4.app.** { *; }
  -keep interface android.support.v4.app.** { *; }
  -keep class com.actionbarsherlock.** { *; }
  -keep interface com.actionbarsherlock.** { *; }
  
  -keepattributes *Annotation*
  
  -dontwarn org.w3c.dom.bootstrap.**
  -dontwarn org.joda.time.**
  -dontwarn org.xmlpull.v1.**
  </code></pre>
  
  <p>How can I fix the error?</p>
  
  <p>Thank you very much!</p>
  
  <hr>
  
  <p>Updated:</p>
  
  <p>The app can be run in emulator after adding one line to proguard-project.txt:</p>
  
  <pre><code>-keep class * { *; }
  </code></pre>
  
  <p>Although the app can be run, I think this solution may be not so good...</p>
  
  <p>Any better solution?</p>
  
  <p>Please help.</p>
  
  <p>Thanks a lot.</p>