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 meMy login.java page:\[code\]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=firstName; i++; }while (c.moveToNext()); } } for(z=0;z<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); } } } }); }}}\[/code\]login.xml\[code\]<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android
rientation="vertical" android:layout_width="fill_parent" android:layout_height="match_parent"><TextView android:text="Question1" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView><EditText android:id="@+id/question" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""></EditText><EditText android:id="@+id/answer" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""></EditText><Button android:id="@+id/registerques1" android:layout_width="wrap_content" android:text="registerques" android:layout_height="wrap_content"></Button></LinearLayout>\[/code\]Memo.java\[code\]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);*/ } });}}\[/code\]memo.xml\[code\]<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" androidrientation="vertical" android:layout_width="fill_parent" android:layout_height="match_parent"><TextView android:text="Titile" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView><EditText android:id="@+id/question" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""></EditText><TextView android:text="Text" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView><EditText android:minLines="6" android:maxLines="10" android:id="@+id/answer" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""></EditText><TableLayout android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_gravity="center" android:stretchColumns="*"><TableRow><Button android:id="@+id/add" android:layout_width="wrap_content" android:text="ADD" android:layout_height="wrap_content"></Button><Button android:id="@+id/view" android:layout_width="wrap_content" android:text="VIEW" android:layout_height="wrap_content"></Button></TableRow></TableLayout></LinearLayout>\[/code\]
rientation="vertical" android:layout_width="fill_parent" android:layout_height="match_parent"><TextView android:text="Question1" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView><EditText android:id="@+id/question" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""></EditText><EditText android:id="@+id/answer" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""></EditText><Button android:id="@+id/registerques1" android:layout_width="wrap_content" android:text="registerques" android:layout_height="wrap_content"></Button></LinearLayout>\[/code\]Memo.java\[code\]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);*/ } });}}\[/code\]memo.xml\[code\]<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" androidrientation="vertical" android:layout_width="fill_parent" android:layout_height="match_parent"><TextView android:text="Titile" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView><EditText android:id="@+id/question" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""></EditText><TextView android:text="Text" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView><EditText android:minLines="6" android:maxLines="10" android:id="@+id/answer" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=""></EditText><TableLayout android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_gravity="center" android:stretchColumns="*"><TableRow><Button android:id="@+id/add" android:layout_width="wrap_content" android:text="ADD" android:layout_height="wrap_content"></Button><Button android:id="@+id/view" android:layout_width="wrap_content" android:text="VIEW" android:layout_height="wrap_content"></Button></TableRow></TableLayout></LinearLayout>\[/code\]