title: trouble opening xml page
body: <p>I created two java class and two xml pages . I am trying to when onclick button of one class,open another class. afer opening , memo.xml page showing blank.
  see following code.
  please help me</p>
  
  <p>My login.java page:</p>
  
  <pre><code>package quesansw.the1;
  import android.app.Activity;
  import android.app.Dialog;
  import android.content.Intent;
  import android.database.Cursor;
  import android.database.sqlite.SQLiteDatabase;
  import android.os.Bundle;
  import android.text.Editable;
  import android.view.View;
  import android.view.Window;
  import android.view.WindowManager;
  import android.widget.Button;
  import android.widget.EditText;
  import android.widget.Toast;
  
  public class Login extends Activity{
  
      SQLiteDatabase db;
      int z,i=0;
      String[] arr = new String[3];
  public void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          db = openOrCreateDatabase("mydatabase.db",
                  SQLiteDatabase.CREATE_IF_NECESSARY, null);
  
          final Dialog d1 = new Dialog(this);
          Window window = d1.getWindow();
          window.setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND,
                  WindowManager.LayoutParams.FLAG_BLUR_BEHIND);
  
          d1.setTitle("Login");
  
          d1.setContentView(R.layout.login);
  
          d1.show();
          Button registerques1 = (Button) d1.findViewById(R.id.registerques1);
          EditText ques = (EditText) d1.findViewById(R.id.question);
  
  
          Cursor cur= db.rawQuery("select * from questions1",null);
          cur.moveToNext();
          System.out.println(cur.getString(0));
          System.out.println(cur.getString(1));
          ques.append(cur.getString(0));
  
          Cursor c = db.rawQuery("SELECT * from questions1", null);
  
          if (c != null ) {
              if  (c.moveToFirst()) {
                  do {
                      String firstName = c.getString(c.getColumnIndex("question"));
                      String Name = c.getString(c.getColumnIndex("answer"));
  
                      arr[i]=firstName;
                      i++;
                      }while (c.moveToNext());
              } 
          }
  
  
          for(z=0;z&lt;2;z++)
          {
              registerques1.setOnClickListener(new View.OnClickListener() {
  
              public void onClick(View v)
              {
  
                  if(z == 2)
                  {
                  Cursor cur= db.rawQuery("select * from questions1",null);
                  cur.moveToNext();
                  EditText ques = (EditText) d1.findViewById(R.id.question);
                  EditText ans = (EditText) d1.findViewById(R.id.answer);
                  Editable newTxt=(Editable)ans.getText(); 
                  String str = newTxt.toString();
                  int l=str.length();
                  int l1=cur.getString(1).length();
                  int l2=l-l1;
                  ques.setText(arr[0]);
                  ans.setText("");
                  if(l2 == 0)
                  {
                      z=5;
                  }
                  }
  
                  if(z == 5)
                  {
                      EditText ques = (EditText) d1.findViewById(R.id.question);
                      ques.setText(arr[1]);
                      Cursor cur= db.rawQuery("select * from questions1 where question='"+arr[1]+"' ",null);
                      cur.moveToNext();
                      //ques.setText();
  
                      EditText ans = (EditText) d1.findViewById(R.id.answer);
                      System.out.println("------"+ans.getText());
                      Editable newTxt=(Editable)ans.getText(); 
                      String str = newTxt.toString();
                      int l=str.length();
                      int l1=cur.getString(1).length();
                      int l2=l-l1;
                      ques.setText(arr[1]);
                      ans.setText("");
                      /*ques.setText(arr[2]);
                      ans.setText("");*/
                      if(l2 == 0)
                      {
                          /*Intent intent = new Intent(getBaseContext(), Memo.class);
                          startActivity(intent);*/
                          z=6;
                      }
  
                  }
  
                  if(z == 6)
                  {
                      EditText ques = (EditText) d1.findViewById(R.id.question);
                      ques.setText(arr[2]);
                      Cursor cur= db.rawQuery("select * from questions1 where question='"+arr[2]+"' ",null);
                      cur.moveToNext();
  
                      EditText ans = (EditText) d1.findViewById(R.id.answer);
                      System.out.println("------"+ans.getText());
                      Editable newTxt=(Editable)ans.getText(); 
                      String str = newTxt.toString();
                      int l=str.length();
                      int l1=cur.getString(1).length();
                      //System.out.println(l+l1);
                      int l2=l-l1;
                      ques.setText(arr[2]);
                      ans.setText("");
                      if(l2 == 0)
                      {
                          System.out.println("memo-----");
                          Intent intent = new Intent(getBaseContext(), Memo.class);
                          startActivity(intent);
                      }
  
                  }
  
  
              }
          });
  
          }
  
  }
  }
  </code></pre>
  
  <p>login.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"&gt;
  
  &lt;TextView android:text="Question1" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"&gt;&lt;/TextView&gt;
  &lt;EditText android:id="@+id/question" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""&gt;&lt;/EditText&gt;
  &lt;EditText android:id="@+id/answer" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""&gt;&lt;/EditText&gt;
  
  &lt;Button android:id="@+id/registerques1" android:layout_width="wrap_content" android:text="registerques" android:layout_height="wrap_content"&gt;&lt;/Button&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>Memo.java</p>
  
  <pre><code>package quesansw.the1;
  
  import android.app.Activity;
  import android.app.Dialog;
  import android.content.Intent;
  import android.os.Bundle;
  import android.view.View;
  import android.view.Window;
  import android.view.WindowManager;
  import android.widget.Button;
  
  public class Memo extends Activity{
  
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
  
          final Dialog d1 = new Dialog(this);
          Window window = d1.getWindow();
          window.setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND,
                  WindowManager.LayoutParams.FLAG_BLUR_BEHIND);
  
          d1.setTitle("Register Questions");
  
          d1.setContentView(R.layout.memo);
  
          Button view = (Button) d1.findViewById(R.id.view);
          view.setOnClickListener(new View.OnClickListener() {
              public void onClick(View v)
              {
                  /*Intent intent = new Intent(getBaseContext(), View.class);
                  startActivity(intent);*/
              }
      });
  }
  }
  </code></pre>
  
  <p>memo.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"&gt;
  
  &lt;TextView android:text="Titile" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"&gt;&lt;/TextView&gt;
  &lt;EditText android:id="@+id/question" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""&gt;&lt;/EditText&gt;
  &lt;TextView android:text="Text" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"&gt;&lt;/TextView&gt;
  &lt;EditText android:minLines="6" android:maxLines="10" android:id="@+id/answer" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""&gt;&lt;/EditText&gt;
  &lt;TableLayout android:layout_height="wrap_content"
          android:layout_width="wrap_content" android:layout_gravity="center"
          android:stretchColumns="*"&gt;
  &lt;TableRow&gt;
  &lt;Button android:id="@+id/add" android:layout_width="wrap_content" android:text="ADD" android:layout_height="wrap_content"&gt;&lt;/Button&gt;
  &lt;Button android:id="@+id/view" android:layout_width="wrap_content" android:text="VIEW" android:layout_height="wrap_content"&gt;&lt;/Button&gt;
  &lt;/TableRow&gt;
  &lt;/TableLayout&gt;
  &lt;/LinearLayout&gt;
  </code></pre>