anroid 学习笔记19 多个页面跳转

1在AndroidManifest.xml中注册一个activity

  android:name="com.lihao.moreactivity.MainActivity"
            android:label="@string/app_name" >
           <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        /*注册*/
        <activity 
            android:name="com.lihao.moreactivity.Second"
            android:label="我是第二个activity">              
        </activity>      

2.第一个设置跳转（布局）

<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" >

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

</RelativeLayout>

2.第一个设置跳转（代码）java

package com.lihao.moreactivity;

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

public class MainActivity extends Activity {

    private Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = (Button)findViewById(R.id.button);
        Buttonlistener listener = new Buttonlistener();
        button.setOnClickListener(listener);
    }

    class Buttonlistener implements OnClickListener{

        @Override
        public void onClick(View arg0) {
            Intent intent = new Intent();
            /**
             * setClass(a,b)
             * 第一个参数代表当前类 第二个是要跳转的activity
             */
            intent.setClass(MainActivity.this,Second.class);
            //跳转
            startActivity(intent);    
        }
        
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

3.第二个跳转设置（布局）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="我是第二个activity"
        />
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/text"
        android:text="返回"
        />

</LinearLayout>

3.第二个跳转设置（布局） java

package com.lihao.moreactivity;

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

public class Second extends Activity {

    private Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second);
        button = (Button)findViewById(R.id.button);
        Buttonlistener listener = new Buttonlistener();
        button.setOnClickListener(listener);
    }

    class Buttonlistener implements OnClickListener{
        @Override
        public void onClick(View arg0) {
            Intent intent = new Intent();
            intent.setClass(Second.this,MainActivity.class);
            startActivity(intent);                
        }
        
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

4.贴图