Android应用开发学习笔记之使用Bundle交换数据

首先看主布局文件main.xml：

[html]
xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="请输入第一个数字：" />
    <EditText
        android:id="@+id/editText1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />"

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="请输入第二个数字：" />
    <EditText
        android:id="@+id/editText2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/button"
        android:text="提交"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />"

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="请输入第一个数字：" />
    <EditText
        android:id="@+id/editText1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />"

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="请输入第二个数字：" />
    <EditText
        android:id="@+id/editText2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/button"
        android:text="提交"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />"

</LinearLayout>
下面来看主Activity文件，其内容如下：

[java]
package com.liuhaoyu;

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

public class MainActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        final EditText edit1 = (EditText)findViewById(R.id.editText1);
        final EditText edit2 = (EditText)findViewById(R.id.editText2);

        Button button = (Button)findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                String num1 = edit1.getText().toString();
                String num2 = edit2.getText().toString();
                Intent intent=new Intent(MainActivity.this, SecondActivity.class);
                Bundle bundle = new Bundle();
                bundle.putCharSequence("number1", num1);
                bundle.putCharSequence("number2", num2);
                intent.putExtras(bundle);
                startActivity(intent);
            }
        });
    }
}

package com.liuhaoyu;

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

补充：移动开发 , Android ,