Problems with XmlPullParser code inside an AsyncTask (Activated By Button Click) - eclipse

Question

SO I have a program that I have been working on for a while. However, I am stuck on method that uses XmlPullParser, the method is called getAllXml(). It is inside of the doInBackGround() method of an AsyncTask. The AsyncTask is a subclass of an Activity called FormActivity. When I run the code.
Here is what the code is supposed to do. After the user selects "CloverField" from a previous activity. An xml file called cloverfield_in.xml is called by setContentView(). The user then presses a button on this same xml file. Clicking this button executes the AsyncTask called MadLIbAsyncTask. Within this AsyncTask this are only two methods, the doInBackground() and the onPostExecute(). (I don't know if I need onPreExecute()...within which I would have have a progress bar....but without this method I figure the program shouldn't crash the way it does).
Within the doInBackground() method, I am calling the method called getAllXml(). This method uses XmlPullParser to search through the current xml (cloverfield_in.xml) and capture text from a single TextView. The code for getAllXml() is as follows.
public void getAllXml() throws XmlPullParserException, IOException{
Activity activity = this;
Resources res = activity.getResources();
XmlResourceParser xpp = res.getXml(R.layout.cloverfield_in);
int eventtype = xpp.getEventType();
while (eventtype != XmlPullParser.END_DOCUMENT){
if (eventtype == XmlPullParser.START_DOCUMENT){
}
else if (eventtype == XmlPullParser.START_TAG){
if (xpp.getName() == "TextView"){
while (eventtype != XmlPullParser.END_TAG){
if (eventtype == XmlPullParser.TEXT){
stringViews[0] = xpp.getText();
}else {}
eventtype = xpp.next();
}
}else {}
}
else if (eventtype == XmlPullParser.END_TAG){
}
else if (eventtype == XmlPullParser.TEXT){
}
eventtype = xpp.next();
}
}
When in the process of debugging, my program often returns a NullPointerException or a RunTimeException. I believe within this code is where the problem resides. I tested the AsyncTask without the existence of the getAllXml() method and everything works fine. Eventually the program is supposed to take the text gathered from the cloverfield_in.xml file and display it in a new file called cloverfield_out.xml.
For a complete review of everything, here is the entire code for FormActivity.class.
package com.muirconsult.mymadlibs;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.content.res.XmlResourceParser;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.Layout;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AutoCompleteTextView;
import android.widget.TextView;
public class FormActivity extends Activity{
String [] textFields;
String Choice;
int thisLayout;
View thatLayout ;
String[] stringViews;
ViewGroup anskey;
Activity activity = this;
String test;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent objIntent = getIntent();
Choice = objIntent.getStringExtra("selection");
if (Choice.equals("Cloverfield")) {
setContentView(R.layout.cloverfield_in);
thisLayout = (R.layout.cloverfield_in);
thatLayout = (View)findViewById(R.layout.cloverfield_out);
}
if (Choice.equals("Fargo")) {
setContentView(R.layout.fargo_in);
}
if(Choice.equals("Ying Yang In This Thang (Ying Yang Twins)")){
setContentView(R.layout.ying_yang_twins_in_this_thang_in);
}
}
public void getAllXml() throws XmlPullParserException, IOException{
Activity activity = this;
Resources res = activity.getResources();
XmlResourceParser xpp = res.getXml(R.layout.cloverfield_in);
int eventtype = xpp.getEventType();
while (eventtype != XmlPullParser.END_DOCUMENT){
if (eventtype == XmlPullParser.START_DOCUMENT){
}
else if (eventtype == XmlPullParser.START_TAG){
if (xpp.getName() == "TextView"){
while (eventtype != XmlPullParser.END_TAG){
if (eventtype == XmlPullParser.TEXT){
stringViews[0] = xpp.getText();
}else {}
eventtype = xpp.next();
}
}else {}
}
else if (eventtype == XmlPullParser.END_TAG){
}
else if (eventtype == XmlPullParser.TEXT){
}
eventtype = xpp.next();
}
}
class MadLibAsyncTask extends AsyncTask<Void, Void, Void>{
String testString;
int thisLayout;
protected Void doInBackground(Void... params) {
try{
getAllXml();
}catch (XmlPullParserException e){
e.printStackTrace();
}catch (IOException e){
e.printStackTrace();
}
return null;
}
protected void onPostExecute (Void result){
String str = "let's go to the park";
String newstr;
setContentView(R.layout.cloverfield_out);
TextView outview = (TextView)findViewById(R.id.outview);
str = (String) outview.getText();
newstr = str.replaceFirst("film",stringViews[0]);
outview.setText(newstr);
}
}
public void onClick(View view) {
MadLibAsyncTask mad = new MadLibAsyncTask();
mad.execute();
}
}
Also, most importantly...the logcat looks as such:
08-10 23:04:50.064: W/dalvikvm(1415): threadid=1: thread exiting with uncaught exception >>> (group=0x40a71930)
08-10 23:04:50.145: E/AndroidRuntime(1415): FATAL EXCEPTION: main
08-10 23:04:50.145: E/AndroidRuntime(1415): java.lang.NullPointerException
08-10 23:04:50.145: E/AndroidRuntime(1415): at java.util.regex.Matcher.appendEvaluated>(Matcher.java:130)
08-10 23:04:50.145: E/AndroidRuntime(1415): at java.util.regex.Matcher.appendReplacement(Matcher.java:110)
08-10 23:04:50.145: E/AndroidRuntime(1415): at java.util.regex.Matcher.replaceFirst(Matcher.java:299)
08-10 23:04:50.145: E/AndroidRuntime(1415): at java.lang.String.replaceFirst(String.java:1793)
08-10 23:04:50.145: E/AndroidRuntime(1415): at com.muirconsult.mymadlibs.FormActivity$MadLibAsyncTask.onPostExecute(FormActivity.java:116)
08-10 23:04:50.145: E/AndroidRuntime(1415): at com.muirconsult.mymadlibs.FormActivity$MadLibAsyncTask.onPostExecute(FormActivity.java:1)
08-10 23:04:50.145: E/AndroidRuntime(1415): at android.os.AsyncTask.finish(AsyncTask.java:631)
08-10 23:04:50.145: E/AndroidRuntime(1415): at android.os.AsyncTask.access$600>\ (AsyncTask.java:177)
08-10 23:04:50.145: E/AndroidRuntime(1415): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
08-10 23:04:50.145: E/AndroidRuntime(1415): at android.os.Handler.dispatchMessage(Handler.java:99)
08-10 23:04:50.145: E/AndroidRuntime(1415): at android.os.Looper.loop(Looper.java:137)
08-10 23:04:50.145: E/AndroidRuntime(1415): at android.app.ActivityThread.main(ActivityThread.java:5041)
08-10 23:04:50.145: E/AndroidRuntime(1415): at java.lang.reflect.Method.invokeNative(Native Method)
08-10 23:04:50.145: E/AndroidRuntime(1415): at java.lang.reflect.Method.invoke(Method.java:511)
08-10 23:04:50.145: E/AndroidRuntime(1415): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-10 23:04:50.145: E/AndroidRuntime(1415): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-10 23:04:50.145: E/AndroidRuntime(1415): at dalvik.system.NativeStart.main(Native Method)