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：