乐学成语简介

时间：2016-06-17 22:23:05 阅读：185 评论：0 收藏：0 [点我收藏+]

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一：软件介绍。

乐学成语是一款关于成语学习的小软件，主要具备以下的几点功能：

1.用户可以通过分类（动物类，人物类等等）来进行学习。

2.学习之余，也有适当的成语游戏。

3.可以根据用户的需要对成语进行收藏。

4.具有对成语的查询功能。

二：步骤。

1.创建数据库和表。

2.显示主界面。

3.显示学习列表

。

4.显示动物类的成语。

5.显示每条成语的详细内容

三.主要代码。

MainActivity

package cn.edu.bztc.happyidion.activity;

import android.app.TabActivity;

import android.content.Intent;

import android.os.Bundle;

import android.view.Menu;

import android.view.Window;

import android.widget.TabHost;

public class MainActivity extends TabActivity{

private TabHost tabHost;//导航栏控件

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);//取消标题栏

setContentView(R.layout.activity_main);

tabHost=getTabHost(); //获取TabHost实例

/*一个Tab对应一个name名称，一个标题，一个图标，yigeActivity页面*/

addTab("study",R.string.title_study,R.drawable.study,StudyActivity.class);

addTab("search",R.string.title_search,R.drawable.search,StudyActivity.class);

addTab("game",R.string.title_game,R.drawable.game,StudyActivity.class);

addTab("save",R.string.title_save,R.drawable.save,StudyActivity.class);

addTab("help",R.string.title_help,R.drawable.help,StudyActivity.class);

}

/*定义每个Tab的显示内容*/

private void addTab(String tag,int title_introduction,int title_icon,Class ActivityClass){

tabHost.addTab(tabHost.newTabSpec(tag).setIndicator(getString(title_introduction),getResources().getDrawable(title_icon)).setContent(new Intent(this,ActivityClass)));

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

AnimalAdapter

package cn.edu.bztc.happyidiom.adapter;

import java.util.List;

import cn.edu.bztc.happyidiom.entity.Animal;

import cn.edu.bztc.happyidion.activity.R;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.webkit.WebView.FindListener;

import android.widget.ArrayAdapter;

import android.widget.ImageButton;

import android.widget.TextView;

import android.widget.Toast;

public class AnimalAdapter extends ArrayAdapter<Animal>{

private int resourceId;

private Context context;

public AnimalAdapter(Context context, int resource,List<Animal> objects) {

super(context,resource, objects);

this.context=context;

resourceId=resource;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

final Animal animal =getItem(position);//获取当前项的Animal实例

View view;

ViewHolder viewHolder;

if(convertView==null){//判断是否第一次运行，如果是则进入，并将上下文环境保存进convertView

view=LayoutInflater.from(getContext()).inflate(resourceId,null);

viewHolder=new ViewHolder();

viewHolder.tvName=(TextView)view.findViewById(R.id.tvName);

viewHolder.btnSave=(ImageButton)view.findViewById(R.id.btnSave);

viewHolder.btnSave.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

Toast.makeText(context,"你要收藏"+animal.getName()+"吗",Toast.LENGTH_SHORT).show();

}

});

view.setTag(viewHolder);

}else{//如果不是第一次运行，convertView不为空，直接取出赋值给view

view=convertView;

viewHolder=(ViewHolder) view.getTag();

}

viewHolder.tvName.setText(animal.getName());//显示成语

return view;

}

class ViewHolder{

TextView tvName;

ImageButton btnSave;

}

CategoryAdapter

package cn.edu.bztc.happyidiom.adapter;

import java.util.List;

import cn.edu.bztc.happyidiom.entity.Category;

import cn.edu.bztc.happyidion.activity.R;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.webkit.WebView.FindListener;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.TextView;

public class CategoryAdapter extends ArrayAdapter<Category>{

private int resourceId;

public CategoryAdapter(Context context, int resource,

List<Category> categoryList) {

super(context,resource, categoryList);

resourceId=resource;

}

public View getView(int position, android.view.View convertView, android.view.ViewGroup parent) {

Category category=getItem(position);//获取当前项的Category实例

View view;

ViewHolder viewHolder;

if(convertView==null){

view=LayoutInflater.from(getContext()).inflate(resourceId,null);

viewHolder=new ViewHolder();

viewHolder.categoryImage=(ImageView)view.findViewById(R.id.category_image);

viewHolder.categoryName=(TextView)view.findViewById(R.id.category_name);

view.setTag(viewHolder);

}else{

view=convertView;

viewHolder=(ViewHolder) view.getTag();

}

viewHolder.categoryImage.setImageResource(category.getImageId());

viewHolder.categoryName.setText(category.getName());

return view;

}

class ViewHolder{

ImageView categoryImage;

TextView categoryName;

}

AnimalDao

package cn.edu.bztc.happyidiom.dao;

import java.util.ArrayList;

import java.util.List;

import cn.edu.bztc.happyidiom.db.DBOpenHelper;

import cn.edu.bztc.happyidiom.entity.Animal;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

public class AnimalDao {

private static AnimalDao animaiDao;

private SQLiteDatabase db;

/*将构造方法私有化*/

private AnimalDao(Context context){

DBOpenHelper dbHelper=new DBOpenHelper(context);

db=dbHelper.openDatabase();

}

/*获取AnimalDao的实例*/

public synchronized static AnimalDao getInstance(Context context){

if(animaiDao==null){

animaiDao=new AnimalDao(context);

}

return animaiDao;

}

/*从数据库读取所有的动物类成语*/

public List<Animal> getAllAnimals(){

List<Animal> list=new ArrayList<Animal>();

Cursor cursor=db.query("animal",null,null,null,null,null,null);

if(cursor.moveToNext()){

do{

Animal animal=new Animal();

animal.setId(cursor.getInt(cursor.getColumnIndex("_id")));

animal.setName(cursor.getString(cursor.getColumnIndex("name")));

animal.setPronounce(cursor.getString(cursor.getColumnIndex("pronounce")));

animal.setAntonym(cursor.getString(cursor.getColumnIndex("antonym")));

animal.setHomoionym(cursor.getString(cursor.getColumnIndex("homoionym")));

animal.setDerivation(cursor.getString(cursor.getColumnIndex("derivation")));

animal.setExamples(cursor.getString(cursor.getColumnIndex("examples")));

animal.setExplain(cursor.getString(cursor.getColumnIndex("explain")));

list.add(animal);

}while(cursor.moveToNext());

}

return list;

}

DBOpenHelper

package cn.edu.bztc.happyidiom.db;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import cn.edu.bztc.happyidion.activity.R;

import android.content.Context;

import android.database.sqlite.SQLiteDatabase;

import android.os.Environment;

import android.util.Log;

/*实现将数据库文件从raw目录拷贝到手机里存放数据库的位置*/

public class DBOpenHelper {

private final int BUFFER_SIZE=400000;//缓冲区大小

public static final String DB_NAME="idioms.db";//保存的数据库文件名

public static final String PACKAGE_NAME="cn.edu.bztc.happyidion.activity";//应用的包名

public static final String DB_PATH="/data"+Environment.getDataDirectory().getAbsolutePath()+"/"+PACKAGE_NAME+"/databases";//在手机里存放数据库的位置

private Context context;

public DBOpenHelper(Context context){

this.context=context;

}

public SQLiteDatabase openDatabase(){

try {

File myDataPath=new File(DB_PATH);

if(!myDataPath.exists()){

myDataPath.mkdirs();//如果没有这个目录则创建

}

String dbfile=myDataPath+"/"+DB_NAME;

if(!(new File(dbfile).exists())){//判断数据库文件是否存在，如果不存在则执行导入，否则直接打开数据库

InputStream is=context.getResources().openRawResource(R.raw.idioms);

FileOutputStream fos=new FileOutputStream(dbfile);

byte[] buffer=new byte[BUFFER_SIZE];

int count=0;

while((count=is.read(buffer))>0){

fos.write(buffer,0,count);

}

fos.close();

is.close();

}

SQLiteDatabase db=SQLiteDatabase.openOrCreateDatabase(dbfile,null);

return db;

} catch (FileNotFoundException e) {

Log.e("MainActivity","File not found");

e.printStackTrace();

}catch (IOException e) {

Log.e("MainActivity","IO exception");

e.printStackTrace();

}

return null;

}

Animal

package cn.edu.bztc.happyidiom.entity;

public class Animal {

private int id;

private String name;//成语名称

private String pronounce;//成语发音

private String explain;//成语解释

private String antonym;//反义词

private String homoionym;//同义词

private String derivation;//源自

private String examples;//例子

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getPronounce() {

return pronounce;

}

public void setPronounce(String pronounce) {

this.pronounce = pronounce;

}

public String getExplain() {

return explain;

}

public void setExplain(String explain) {

this.explain = explain;

}

public String getAntonym() {

return antonym;

}

public void setAntonym(String antonym) {

this.antonym = antonym;

}

public String getHomoionym() {

return homoionym;

}

public void setHomoionym(String homoionym) {

this.homoionym = homoionym;

}

public String getDerivation() {

return derivation;

}

public void setDerivation(String derivation) {

this.derivation = derivation;

}

public String getExamples() {

return examples;

}

public void setExamples(String examples) {

this.examples = examples;

}

乐学成语 简介

乐学成语简介