小学四则运算APP 第三阶段冲刺-第一天

团队成员：陈淑筠、杨家安、陈曦

团队选题：小学四则运算APP

第三次冲刺阶段时间：12.12~12.19

本次发布的是音乐播放功能，可以根据用户需求一边播放音乐一边做题，也拥有暂停播放音乐的功能，增强APP的实用性

MainActivity.java:

package com.example.calculator;

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

public class MainActivity extends Activity {
	
	private Button xunlian,choice;
	private Button playmusic;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		findView();
        playmusic.setOnClickListener(startlis);
		xunlian=(Button)findViewById(R.id.button1);
		Log.i("PlayMusic", "PlayMusic onCreate被运行");
		choice=(Button)findViewById(R.id.button2);
		
		xunlian.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				Intent intent=new Intent();
				intent.setClass(MainActivity.this, CalculatorSet.class);
				startActivity(intent);
				MainActivity.this.finish();
			}
		});
		choice.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				Intent intent=new Intent();
				intent.setClass(MainActivity.this, ChoiceSet.class);
				startActivity(intent);
				MainActivity.this.finish();
			}
		});
	}
	@Override
    protected void onStart() {
    	// TODO Auto-generated method stub
    	super.onStart();
    	Log.i("PlayMusic", "PlayMusic onStart被运行");
    }
    
    @Override
    protected void onRestart() {
    	// TODO Auto-generated method stub
    	super.onRestart();
    	Log.i("PlayMusic", "PlayMusic onRestart被运行");
    }
    
    @Override
    protected void onResume() {
    	// TODO Auto-generated method stub
    	super.onResume();
    	Log.i("PlayMusic", "PlayMusic onResume被运行");
    }
    
    @Override
    protected void onStop() {
    	// TODO Auto-generated method stub
    	super.onStop();
    	Log.i("PlayMusic", "PlayMusic onStop被运行");
    }
    
    @Override
    protected void onPause() {
    	// TODO Auto-generated method stub
    	super.onPause();
    	Log.i("PlayMusic", "PlayMusic onPause被运行");
    }
    
    @Override
    protected void onDestroy() {
    	// TODO Auto-generated method stub
    	super.onDestroy();
    	Log.i("PlayMusic", "PlayMusic onDestroy被运行");
    }
    
    private OnClickListener startlis=new OnClickListener(){
 
        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            startService(new Intent(MainActivity.this, MusicService.class));  
            //启动服务
        }
 
    };

	private void findView() {
		// TODO Auto-generated method stub
		playmusic=(Button)findViewById(R.id.playmusic);
	}

	@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;
	}

}

activity_main.xml:

<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="@drawable/sea"
    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/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="122dp"
        android:text="@string/hello_world"
        android:textSize="@dimen/btnTextSize" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView2"
        android:layout_alignRight="@+id/textView2"
        android:layout_below="@+id/textView2"
        android:layout_marginTop="56dp"
        android:text="进入普通训练系统"
        android:textSize="@dimen/btnTextSizes" />

    <Button
        android:id="@+id/button2"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_alignRight="@+id/button1"
        android:layout_below="@+id/button1"
        android:layout_marginTop="23dp"
        android:text="进入选择题训练系统" 
        android:textSize="@dimen/btnTextSizes"/>

    <Button
        android:id="@+id/button3"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button2"
        android:layout_alignRight="@+id/button2"
        android:layout_below="@+id/button2"
        android:layout_marginTop="21dp"
        android:text="进入考试题目系统"
        android:textSize="@dimen/btnTextSizes" />

    <Button
        android:id="@+id/playmusic"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:background="@drawable/music" />

    <Button
        android:id="@+id/stopmusic"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/playmusic"
        android:layout_toRightOf="@+id/playmusic"
        android:background="@drawable/button_blue_pause" />

</RelativeLayout>

MusicService.java:

package com.example.calculator;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.util.Log;

public class MusicService extends Service{
	private MediaPlayer mp;
    private String TAG="Main";
    
    @Override
	public IBinder onBind(Intent arg0) {
		// TODO Auto-generated method stub
		return null;
	}
    @Override
    public void onCreate() {
        super.onCreate();
        mp=MediaPlayer.create(this,R.raw.big);
        Log.i(TAG, "MusicService onCreate被运行");
    }
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
    	// TODO Auto-generated method stub
    	 mp.start();
    	 Log.i(TAG, "MusicService onStartCommand被运行");
    	 return super.onStartCommand(intent, flags, startId);
    	
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
        mp.stop();
        Log.i(TAG, "MusicService onDestroy被运行");
    }
}

运行结果：