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#5 #1020 实验五睡眠大师助眠音乐
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zengsn authored May 23, 2018
2 parents bb7ae7f + 5153a44 commit 563476a
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53 changes: 53 additions & 0 deletions soft1614080902442/app/java/soft1614080902442main4Activity.java
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package edu.hzuapps.androidlabs.soft1614080902442;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
import android.widget.EditText;
public class soft1614080902442main4Activity extends AppCompatActivity {

String hms;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_soft1614080902442main4);
setTitle("睡眠大师");

}

private void save(String hms) {
SharedPreferences.Editor editor = getSharedPreferences("data", MODE_PRIVATE).edit();//获取对象,并且命名文件的名称
editor.putString("hms", hms); //保存数据
editor.commit();
editor.clear();
Toast.makeText(soft1614080902442main4Activity.this, "保存音乐成功", Toast.LENGTH_LONG).show();
}
private void readPrefs() {
SharedPreferences prefs = getSharedPreferences("data", MODE_PRIVATE); //获取对象,读取data文件
String hms = prefs.getString("hms", ""); //获取文件中的数据
Toast.makeText(soft1614080902442main4Activity.this, "正在播放音乐:"+hms, Toast.LENGTH_LONG).show();
}

public void onClick(View view) { //按钮的点击事件
switch (view.getId()) {
case R.id.xieru:
EditText ethour = (EditText)findViewById(R.id.hour);
hms = ethour.getText().toString();
save(hms); //调用保存方法,将输入的姓名和年龄保存
break;
case R.id.duqu:
readPrefs(); //调用读取方法,将保存的文件中的姓名和年龄显示出来
break;
}

}
}
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<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".soft1614080902442main4Activity">

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"


android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical">

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp"

android:layout_alignParentTop="true"
android:background="#fff">

<EditText
android:id="@+id/naoling"
android:layout_width="match_parent"
android:layout_height="wrap_content"


android:layout_centerVertical="true"
android:hint="搜索助眠音乐" />


<ImageButton
android:id="@+id/查询"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="15dp"
android:background="@drawable/search" />

</RelativeLayout>


<EditText
android:id="@+id/hour"
android:layout_width="match_parent"
android:layout_height="wrap_content"


android:layout_centerVertical="true"
android:hint="查找音乐编号" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

android:layout_marginBottom="170dp"
android:orientation="horizontal">

<Button
android:id="@+id/xieru"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="onClick"
android:text="保存该音乐"
android:textSize="20sp" />

<Button
android:id="@+id/duqu"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="onClick"
android:text="播放该音乐"
android:textSize="20sp" />


</LinearLayout>


</RelativeLayout>

18 changes: 18 additions & 0 deletions soft1614080902442/report5.md
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# 第五次实验

## 一.实验目标
### 掌握在Android App中存储数据。
## 二.实验内容
### 1.将应用产生的数据存储到数据库中;
### 2.使用UML类图描述表结构;
### 3.将应用运行结果截图。
## 三.实验步骤
### 1.在该实验中我选择了SharedPreferences写入读取的方法,与老师所教授方法有些不同;
### 2.在main4activity.java中分别写了写和读两个方法,并且在xml文件里设置了保存音乐,播放音乐两个按钮,通过监听器实现简单的读写功能;
### 3.最后查看程序能否实现所需的功能
### 4.整理实验报告
## 四.实验结果
### ![image](https://github.com/cruiji/android-labs-2018/blob/master/soft1614080902442/实验五图一.png)
### ![image](https://github.com/cruiji/android-labs-2018/blob/master/soft1614080902442/实验五图二.png)
## 五.实验体会
### 在做这个实验的时候,开始是听不懂的,感觉比较难以理解,在宿舍后,通过网上查询,安卓存储的教程后,会使用了一种比较简单的读取方法来完成该实验。
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