null pointer exception when i add style to my layout xml file

[shawn peter]

below is my xml file

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
   
    android:orientation="vertical" >

    <ViewStub
        android:id="@+id/vsHeader"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inflatedId="@+id/header"
        android:layout="@layout/header" />

    <LinearLayout
        android:id="@+id/header"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="10dp" >

        <RelativeLayout
            android:id="@+id/date"
            android:layout_width="fill_parent"
            android:layout_height="60dp"
             android:layout_marginTop="20dp"
            android:orientation="horizontal" >

            <TextView
                android:id="@+id/fromDate"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginRight="20dp"
                android:layout_marginTop="20dp"
                android:text="From"
                android:textSize="14sp" />

            <Button
                android:id="@+id/btnFromDate"
                style="@style/RoundedButtonAsh"
                android:layout_height="45dp"
                android:layout_gravity="center"
                android:layout_marginTop="10dip"
                android:layout_toRightOf="@+id/fromDate"
                android:onClick="onButtonClicker"
                android:text="Select date"
                android:width="200dp" />
        </RelativeLayout>

        <RelativeLayout
            android:id="@+id/date"
            android:layout_width="fill_parent"
            android:layout_height="60dp"
             android:layout_marginTop="20dp"
            android:orientation="horizontal" >

            <TextView
                android:id="@+id/toDate"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginRight="35dp"
                android:layout_marginTop="20dp"
                android:text="To"
                android:textSize="14sp" />

            <Button
                android:id="@+id/btnToDate"
                style="@style/RoundedButtonAsh"
                android:layout_height="45dp"
                android:layout_gravity="center"
                android:layout_marginTop="10dip"
                android:layout_toRightOf="@+id/toDate"
                android:onClick="onButtonClicker"
                android:text="Select date"
                android:width="200dp" />
        </RelativeLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/btnSubmit"
            style="@style/RoundedButtonAsh"
            android:layout_height="45dp"
            android:layout_gravity="center"
            android:layout_marginLeft="65dip"
            android:onClick="onButtonClicker"
            android:text="@string/Submit"
            android:width="200dp" />
    </LinearLayout>

</LinearLayout>

below is the java class

package com.android.member;

import com.android.dashboard.Activity_Exit;
import com.android.dashboard.Activity_Help;
import com.android.dashboard.DashBoardActivity;
import com.android.dashboard.Global;
import com.android.db.DatabaseHandler;
import com.android.db.ShiftDelegate;
import com.android.lead.PM_Admin;
import com.android.lead.PM_Approve;
import com.android.lead.PM_Dashbord;
import com.android.lead.PM_Shift;
import com.android.loginactivity.LoginActivity;
import com.android.loginactivity.R;
import com.android.shift.MainActivity;

import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class Member_Home extends DashBoardActivity {

	private String username;
	private String password;
	private DatabaseHandler db;
	private TextView request;
	private ShiftDelegate delegate ;
	private SharedPreferences sp;
	private Global global;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		try {
			setContentView(R.layout.member_home);
			setHeader(getString(R.string.HomeActivityTitle), false, true);
			global = ((Global) getApplicationContext());
			sp = PreferenceManager
					.getDefaultSharedPreferences(this);

			

			db = new DatabaseHandler(this);
			request = (TextView) findViewById(R.id.txtChangeShift);

			if(db.isRequestApproved(global.getUsername().toString().trim())){
				Editor edit = sp.edit();
				edit.putString("RequestApproved"+ global.getUsername().toString().trim(), "RequestApproved");
				edit.commit();				
			
			}
			if(db.isResponseApproved((global.getUsername().toString().trim()))){
				Editor edit = sp.edit();
				edit.putString("ResponseApproved"+ global.getUsername().toString().trim(), "ResponseApproved");
				edit.commit();				
			
			}
			
			
			if (db.isNewRequest(global.getUsername())) {

				ShiftDelegate delegate = db.getDelegate(global.getUsername()
						.toString().trim());
				request.setVisibility(View.VISIBLE);
				
				Editor edit = sp.edit();
				edit.putString("Delegation"
						+ global.getUsername().toString().trim(), "VISIBLE");
				edit.commit();

			}
			// Global global = ((Global) getApplicationContext());
			// global.setUsername((uername).getText().toString());
			// global.setPassword((password).getText().toString());
				db.close();
			
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	@Override
	public void onBackPressed() {
		Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
    	startActivity(intent);
	    return;
	}
	
	@Override
	public void onResume() {
		super.onResume();
		db = new DatabaseHandler(this);
		
		if (db.isNewRequest(global.getUsername())) {
			SharedPreferences sp = PreferenceManager
					.getDefaultSharedPreferences(this);

			ShiftDelegate delegate = db.getDelegate(global.getUsername()
					.toString().trim());

			String status = sp.getString("Delegation"
					+ global.getUsername().toString().trim(), "VISIBLE");

			if (status.equalsIgnoreCase("VISIBLE")) {
				request.setVisibility(View.VISIBLE);
			}else{
				request.setVisibility(View.GONE);
			}

		}
		
		
		
		
		db.close();
		// setLike();
		// request.setVisibility(View.GONE);
	}

	public void onButtonClicker(View v) {
		Intent intent;

		switch (v.getId()) {
		case R.id.main_btn_shift:
			// intent = new Intent(this, Activity_Shift.class);
			intent = new Intent(this, Member_Shift.class);

			startActivity(intent);
			break;

		case R.id.main_btn_leave:
			intent = new Intent(this, Member_Leave.class);
			startActivity(intent);
			break;

		case R.id.main_btn_allowances:
			intent = new Intent(this, Member_Allowance.class);
			startActivity(intent);
			break;

		case R.id.main_btn_delegate:
			intent = new Intent(this, Member_Shift_Swap.class);
			startActivity(intent);
			break;

		case R.id.main_btn_preference:
			intent = new Intent(this, Member_Shift_preference.class);
			startActivity(intent);
			break;

		case R.id.main_btn_player:
			intent = new Intent(this, Member_Player.class);
			startActivity(intent);
			break;
		case R.id.txtChangeShift:
			intent = new Intent(this, Member_ShowSwap.class);
			startActivity(intent);

			break;

		default:
			break;
		}

	}
}

but when i change the my xml file first part as below(Add the style " android:background="@style/page_background_wh") it give me exception

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@style/page_background_wh"
    android:orientation="vertical" >

below is exception

10-29 11:04:28.998: W/System.err(12659): android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
10-29 11:04:29.008: W/System.err(12659): 	at android.view.LayoutInflater.createView(LayoutInflater.java:518)
10-29 11:04:29.008: W/System.err(12659): 	at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
10-29 11:04:29.008: W/System.err(12659): 	at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
10-29 11:04:29.008: W/System.err(12659): 	at android.view.LayoutInflater.inflate(LayoutInflater.java:386)
10-29 11:04:29.008: W/System.err(12659): 	at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
10-29 11:04:29.008: W/System.err(12659): 	at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
10-29 11:04:29.008: W/System.err(12659): 	at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:227)
10-29 11:04:29.008: W/System.err(12659): 	at android.app.Activity.setContentView(Activity.java:1657)
10-29 11:04:29.008: W/System.err(12659): 	at com.android.member.Member_Home.onCreate(Member_Home.java:40)
10-29 11:04:29.008: W/System.err(12659): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
10-29 11:04:29.008: W/System.err(12659): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1623)
10-29 11:04:29.008: W/System.err(12659): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1675)
10-29 11:04:29.008: W/System.err(12659): 	at android.app.ActivityThread.access$1500(ActivityThread.java:121)
10-29 11:04:29.008: W/System.err(12659): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:943)
10-29 11:04:29.008: W/System.err(12659): 	at android.os.Handler.dispatchMessage(Handler.java:99)
10-29 11:04:29.008: W/System.err(12659): 	at android.os.Looper.loop(Looper.java:130)
10-29 11:04:29.008: W/System.err(12659): 	at android.app.ActivityThread.main(ActivityThread.java:3701)
10-29 11:04:29.008: W/System.err(12659): 	at java.lang.reflect.Method.invokeNative(Native Method)
10-29 11:04:29.008: W/System.err(12659): 	at java.lang.reflect.Method.invoke(Method.java:507)
10-29 11:04:29.008: W/System.err(12659): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
10-29 11:04:29.008: W/System.err(12659): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:624)
10-29 11:04:29.008: W/System.err(12659): 	at dalvik.system.NativeStart.main(Native Method)
10-29 11:04:29.008: W/System.err(12659): Caused by: java.lang.reflect.InvocationTargetException
10-29 11:04:29.008: W/System.err(12659): 	at java.lang.reflect.Constructor.constructNative(Native Method)
10-29 11:04:29.008: W/System.err(12659): 	at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
10-29 11:04:29.008: W/System.err(12659): 	at android.view.LayoutInflater.createView(LayoutInflater.java:505)
10-29 11:04:29.008: W/System.err(12659): 	... 21 more
10-29 11:04:29.008: W/System.err(12659): Caused by: android.content.res.Resources$NotFoundException: Resource is not a Drawable (color or path): TypedValue{t=0x1/d=0x7f070000 a=-1 r=0x7f070000}
10-29 11:04:29.018: W/System.err(12659): 	at android.content.res.Resources.loadDrawable(Resources.java:1692)
10-29 11:04:29.018: W/System.err(12659): 	at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
10-29 11:04:29.018: W/System.err(12659): 	at android.view.View.<init>(View.java:1975)
10-29 11:04:29.018: W/System.err(12659): 	at android.view.View.<init>(View.java:1923)
10-29 11:04:29.018: W/System.err(12659): 	at android.view.ViewGroup.<init>(ViewGroup.java:314)
10-29 11:04:29.018: W/System.err(12659): 	at android.widget.LinearLayout.<init>(LinearLayout.java:124)
10-29 11:04:29.018: W/System.err(12659): 	... 24 more
10-29 11:04:29.018: D/AndroidRuntime(12659): Shutting down VM
10-29 11:04:29.018: W/dalvikvm(12659): threadid=1: thread exiting with uncaught exception (group=0x2aac8578)
10-29 11:04:29.028: E/AndroidRuntime(12659): FATAL EXCEPTION: main
10-29 11:04:29.028: E/AndroidRuntime(12659): java.lang.RuntimeException: Unable to resume activity {com.android.loginactivity/com.android.member.Member_Home}: java.lang.NullPointerException
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2141)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2156)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1680)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.ActivityThread.access$1500(ActivityThread.java:121)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:943)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.os.Handler.dispatchMessage(Handler.java:99)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.os.Looper.loop(Looper.java:130)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.ActivityThread.main(ActivityThread.java:3701)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at java.lang.reflect.Method.invokeNative(Native Method)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at java.lang.reflect.Method.invoke(Method.java:507)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:624)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at dalvik.system.NativeStart.main(Native Method)
10-29 11:04:29.028: E/AndroidRuntime(12659): Caused by: java.lang.NullPointerException
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at com.android.member.Member_Home.onResume(Member_Home.java:100)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1150)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.Activity.performResume(Activity.java:3832)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2131)
10-29 11:04:29.028: E/AndroidRuntime(12659): 	... 12 more