Calling different layers from the same class

I am here to seek some help with my code which i am facing a dead end road with. I'm trying to pass values from screen1.java using Intent to screen2.java. Passing the values is fine and I managed to get through it; however, when I check using if statement the program crash down. Here are my files, plzzzzzzzzzzz help

screen1.java

package test.android;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class screen1 extends Activity
{
    static String strKey = "Hello";
    static final String strValue = "Hello";

    public void onCreate(Bundle icicle)
    {
        super.onCreate(icicle);
        setContentView(R.layout.screen1);

        //** button A      
        Button A = (Button) findViewById(R.id.btnClickA);
        A.setOnClickListener(new View.OnClickListener() {
            public void onClick(View arg0) {
                Intent i = new Intent(screen1.this, screen2.class);
                strKey = "NAME";
                i.setClassName("packageName", "packageName.IntentClass");
                String term = "Hello";
                i.putExtra("packageName.term", term);

                //i.putExtra(strKey, strValue);
                startActivity(i);
            }
        });
        //**
        //** button B      
        Button B = (Button) findViewById(R.id.btnClickB);
        B.setOnClickListener(new View.OnClickListener() {
            public void onClick(View arg0) {
                Intent i = new Intent(screen1.this, screen3.class);
                startActivity(i);
            }
        });
        //**

    }
}

screen2.java

package test.android;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class screen2 extends Activity
{
   public void onCreate(Bundle icicle)
   {
       Bundle extras = getIntent().getExtras();
        String term = extras.getString("packageName.term");

        System.out.println("--- Name  is  -->"+ term);

        if(term.equalsIgnoreCase("Hello") || term.equalsIgnoreCase("Name")){
            super.onCreate(icicle);
            setContentView(R.layout.screen3);
            Button b = (Button) findViewById(R.id.btnClick3);
            b.setOnClickListener(new View.OnClickListener() {
                public void onClick(View arg0) {
                    setResult(RESULT_OK);
                    finish();
                }
            });
        } else {
            super.onCreate(icicle);
            setContentView(R.layout.screen2);
            Button b = (Button) findViewById(R.id.btnClick2);
            b.setOnClickListener(new View.OnClickListener() {
                public void onClick(View arg0) {
                    setResult(RESULT_OK);
                    finish();
                }
            });
        }
        // DOES NOT WORK !!!!!!!!!
        System.out.println("--- Name  is  -->"+ term);


    }
}

Layouts: screen1.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
>
<TextView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="You are in the first Screen"
/>
<Button
  android:id ="@+id/btnClickA"
  android:background="@drawable/sleep0"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Open Screen 2"
/>
<Button
  android:id ="@+id/btnClickB"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Open Screen 3"
/>
<ImageView android:id="@+id/icon" android:layout_width="wrap_content"
android:layout_height="fill_parent" android:src="@drawable/icon"
android:layout_gravity="center"/>
</LinearLayout>

screen2.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
>
<TextView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="You are in Screen 2"
/>
<Button
  android:id ="@+id/btnClick2"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Close"
/>
</LinearLayout>

screen3.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- ScrollView: will allow the layout to be scroll Up/Down and Left/right  -->
<ScrollView
   android:id="@+id/widget54"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   xmlns:android="http://schemas.android.com/apk/res/android"
   >
<LinearLayout
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:scrollbars="vertical"

>
<TextView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="You are in Screen 3"
/>
<Button
  android:id ="@+id/btnClick3"
  android:background="@drawable/sss"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Close"
/>
<ImageView android:id="@+id/sssq"  android:layout_width="fill_parent"
android:layout_height="fill_parent" android:src="@drawable/sssq"
android:layout_gravity="center"  />

</LinearLayout>
</ScrollView>

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="test.android">
   <application android:icon="@drawable/icon">

      <activity android:name="screen1"
                        android:label="SCREEN 1">

         <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>

      </activity>
      <activity android:name="screen2"
                        android:label="SCREEN 2">
      </activity>

      <activity android:name="screen3"
                        android:label="SCREEN 3">
      </activity>  
   </application>
</manifest>

===== The error is caused by these lines of code in screen2.java:

  if(term.equalsIgnoreCase("Hello") || term.equalsIgnoreCase("Name")){
      super.onCreate(icicle);
      setContentView(R.layout.screen3);
      Button b = (Button) findViewById(R.id.btnClick3);
      b.setOnClickListener(new View.OnClickListener() {
         public void onClick(View arg0) {
         setResult(RESULT_OK);
         finish();
         }
      });
  }
  else {
      super.onCreate(icicle);
      setContentView(R.layout.screen2);
      Button b = (开发者_如何学CButton) findViewById(R.id.btnClick2);
      b.setOnClickListener(new View.OnClickListener() {
          public void onClick(View arg0) {
              setResult(RESULT_OK);
              finish();
          }
      });
  }

**notice if I get rid of the entire IF statement and go with only the ELSE the program works fine.

i.setClassName("packageName", "packageName.IntentClass") is not required, if you are passing information to Intent constructor. Btw Is your Screen3 call working fine ?

You're passing the data incorrectly, try this:

public void onClick(View arg0) {
                Intent i = new Intent(screen1.this, screen2.class);
                strKey = "NAME";
                //NO NEED FOR THIS, REMOVE -> i.setClassName("packageName", "packageName.IntentClass");
                String term = "Hello";
                //Add your string to a bundle:
                Bundle b = new Bundle();
                b.putString("packageName.term", term);
                //Then add the bundle to your intent
                i.putExtra(b);

                //i.putExtra(strKey, strValue);
                startActivity(i);
            }

The way you retrieve it in screen2 activity is fine, I would just check if term is null:

if(term != null && (term.equalsIgnoreCase("Hello") || term.equalsIgnoreCase("Name"))){

...