Crash issue in OnResume

If application stay in background mode more then 5 min. after that i try to open Application at that time got crash issue my Error log is here help me thanks in Advance....

java.lang.RuntimeException: Unable to start activity` ComponentInfo{com.gamestruct.TweetBoostAndroid/com.gamestruct.TweetBoostAndroid.TabbedActivity}: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.gamestruct.TweetBoostAndroid/com.gamestruct.TweetBoostAndroid.EarnCoinActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2205)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2255)
at android.app.ActivityThread.access$800(ActivityThread.java:142)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1203)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5118)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.gamestruct.TweetBoostAndroid/com.gamestruct.TweetBoostAndroid.EarnCoinActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2205)
at android.app.ActivityThread.startActivityNow(ActivityThread.java:2043)
at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135)
at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347)
at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:749)
at android.widget.TabHost.setCurrentTab(TabHost.java:413)
at android.widget.TabHost.addTab(TabHost.java:240)
at com.gamestruct.TweetBoostAndroid.TabbedActivity.addTab(TabbedActivity.java:199)
at com.gamestruct.TweetBoostAndroid.TabbedActivity.setTabs(TabbedActivity.java:180)
at com.gamestruct.TweetBoostAndroid.TabbedActivity.onCreate(TabbedActivity.java:140)
at android.app.Activity.performCreate(Activity.java:5275)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2169)
... 11 more
Caused by: java.lang.NullPointerException
at com.gamestruct.TweetBoostAndroid.EarnCoinActivity.onCreate(EarnCoinActivity.java:110)
at android.app.Activity.performCreate(Activity.java:5275)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2169)
... 23 more