Android常用空間学習---乗算計算機

package com.example.androidtest;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.view.View;
import android.widget.TextView; 
//import android.view.View.OnClickListener;
//import android.text.Editable; 
//import android.text.TextWatcher; 
import android.widget.EditText;

public class MainActivity extends Activity 
{	
	private EditText    stinga;
	private EditText    stingb;
	private TextView	symble;
	private Button      button;
	
	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		stinga = (EditText)findViewById(R.id.Texta);
		stingb = (EditText)findViewById(R.id.Textb);
		
	   	symble = (TextView)findViewById(R.id.textView1);
        button = (Button)findViewById(R.id.button1); 
		
		symble.setText(R.string.chengyi);	
		button.setText(R.string.jisuan);
        //        
/*		butto.setOnClickListener(new Button.OnClickListener()
        {   
            public void onClick(View v)  
            {    
            	String factorStra = stinga.getText().toString();
            	String factorStrb = stingb.getText().toString();
            
            	Intent intent =new Intent();
            	intent.putExtra("one",factorStra );
            	intent.putExtra("two",factorStrb );
            	intent.setClass(MainActivity.this, TestActivity.class);
            	MainActivity.this.startActivity(intent);
            }  
        
        });
		*/
       }
 
	
	public void myClickHandler(View target){  
        //setTitle("myClickHandler01");  
		String factorStra = stinga.getText().toString();
    	String factorStrb = stingb.getText().toString();
    
    	Intent intent =new Intent();
    	intent.putExtra("one",factorStra );
    	intent.putExtra("two",factorStrb );
    	intent.setClass(MainActivity.this, TestActivity.class);
    	MainActivity.this.startActivity(intent);
       
    }  
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		menu.add(0, 1, 1, R.string.exit);
		menu.add(0, 2, 2, R.string.about);
		//getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		if(item.getItemId() == 1)
		{finish();}
		return super.onOptionsItemSelected(item);
	}	
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/background_color"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ImageView
        android:id="@+id/logo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="21dp"
        android:src="@drawable/logo" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/Textb"
        android:layout_alignRight="@+id/Textb"
        android:layout_below="@+id/Textb"
        android:layout_marginTop="68dp" 
        android:onClick="myClickHandler"  
        />
       

    <TextView
        android:id="@+id/textView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/Texta"
        android:layout_alignRight="@+id/Texta"
        android:layout_below="@+id/Texta"
        android:layout_marginTop="69dp"/>
      
        


    <EditText
        android:id="@+id/Texta"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/logo"
        android:layout_alignRight="@+id/logo"
        android:layout_below="@+id/logo" />

    <EditText
        android:id="@+id/Textb"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_alignRight="@+id/textView1"
        android:layout_below="@+id/textView1" />
/>
</RelativeLayout>

package com.example.androidtest;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import android.content.Intent;

public class TestActivity extends Activity  {

	private TextView mytextview; 
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.other_activity);
		mytextview = (TextView)findViewById(R.id.mytextView);
		
		Intent intent =new Intent();
		intent = getIntent();
		
		String factorone = intent.getStringExtra("one");
		String factortwo = intent.getStringExtra("two");
		
		int factoroneint = Integer.parseInt(factorone);
		int factortwoint = Integer.parseInt(factortwo);
		
		int result = factoroneint * factortwoint;
		
		mytextview.setText(result + "");
}
}