Intent实现简单的值传递

Intent在实现Activity之间的跳转时，可以传递值。下面是一个简单是实例：

首先创建两个xml文件：

activity_main.xml:

<span style="font-family:SimSun;font-size:14px;"><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: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" >

    <TextView
        android:id="@+id/textview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="点击传值！" />

</RelativeLayout>
</span>

activity_second.xml:

<span style="font-family:SimSun;font-size:14px;"><?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/number"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/name"
        android:layout_alignBottom="@+id/name"
        android:layout_alignParentLeft="true"
        android:layout_marginLeft="35dp"
        android:background="#123456"
        android:text="number"
        android:textSize="45px" />

    <TextView
        android:id="@+id/name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="35dp"
        android:layout_marginTop="50dp"
        android:background="#345678"
        android:text="name"
        android:textSize="45px" />

</RelativeLayout>
</span>

然后写java文件

MainActivity

<span style="font-family:SimSun;font-size:14px;">package com.mytext1.mytext1;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import  android.view.View.OnClickListener;
import android.content.Intent;
import android.widget.TextView;
import android.widget.TextClock;

public class MainActivity extends Activity {
	private TextView textview;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		textview=(TextView)findViewById(R.id.textview);
		textview.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				Intent intent=new Intent(MainActivity.this,SecondActivity.class);
				Textclass text=new Textclass();
				text.setNumber(201314);
				text.setName("夏洛");
				Bundle bundle=new Bundle();
				bundle.putSerializable("text", text);
				intent.putExtras(bundle);
				startActivity(intent);
				
			}
		});
	}



}
</span>

然后是SecondActivity:

<span style="font-family:SimSun;font-size:14px;">package com.mytext1.mytext1;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

public class SecondActivity extends Activity{
	private Textclass text;
	private TextView number;
	private TextView name;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_second);
		Intent intent=getIntent();
		text=(Textclass)intent.getSerializableExtra("text");
		number=(TextView)findViewById(R.id.number);
		name=(TextView)findViewById(R.id.name);
		number.setText(String.valueOf(text.getNumber()));
		name.setText(text.getName());
	}
	

}
</span>

然后是自定义类Textclass:

<span style="font-family:SimSun;font-size:14px;">package com.mytext1.mytext1;
import java.io.Serializable;

import android.R.string;

public class Textclass implements Serializable {
	private String name;
	private int number;
	public String getName() {
		return name;
	}
	public void setName(String string) {
		this.name = string;
	}
	public int getNumber() {
		return number;
	}
	public void setNumber(int number) {
		this.number = number;
	}

}
</span>

最后在AndriodManifest里申明一下SecondActivity就好了。

这就实现了Intent跳转时值的传递。