# 实验三

**Repository Path**: ting968/shiyan-3

## Basic Information

- **Project Name**: 实验三
- **Description**: 实现图片自动翻页，提供背景音乐
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-11-29
- **Last Updated**: 2022-11-29

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 实验三

activity_main.xml代码：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/linear"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" />
</LinearLayout>

Mainactivity.java代码：
package com.example.demo;

import android.graphics.drawable.AnimationDrawable;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

    private ImageView mImg;
    private AnimationDrawable mAd;
    private MusicServer music;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mImg = (ImageView) findViewById(R.id.imageView1);
        mImg.setBackgroundResource(R.drawable.my_frameanimation);
        mAd = (AnimationDrawable) MainActivity.this.mImg.getBackground();
        mAd.start();
    }
    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        music.stop(this);
    }


    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        music.play(this, R.raw.my_music);
    }
}
MusicServer.java代码：
package com.example.demo;

import android.content.Context;
import android.media.MediaPlayer;

public class MusicServer{
    private static MediaPlayer mp =null;
    public static void play(Context context, int resource){
        stop(context);
        mp = MediaPlayer.create(context, resource);
        mp.setLooping(true);
        mp.start();
    }
    public static void stop(Context context) {
        // TODO Auto-generated method stub
        if(mp!= null){
            mp.stop();
            mp.release();
            mp = null;
        }
    }

}
my_frameanimation.xml代码：
<?xml version="1.0" encoding="utf-8"?>
<animation-list
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:oneshot="false"
    >
    <item
        android:drawable="@drawable/img1"
        android:duration="200"
        />
    <item
        android:drawable="@drawable/img2"
        android:duration="200"
        />
    <item
        android:drawable="@drawable/img3"
        android:duration="200"
        />
    <item
        android:drawable="@drawable/img4"
        android:duration="200"
        />

</animation-list>