使用默认姓名:

默认范围:

保存设置

默认姓名

100

1000

10000

该模块的逻辑实现代码在“SettingFragment”类中实现：

package com.example.mygame;

import android.content.Context;

import android.content.SharedPreferences;

import android.support.v4.app.Fragment;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.EditText;

import android.widget.Spinner;

import android.widget.Toast;

public class SettingFragment extends Fragment{

private EditText edit_name;

private Button btn_save;

private CheckBox chb_defaultName;

private Spinner spinner;

private Context context;

@Override

public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState){

View view = inflater.inflate(R.layout.fragment_setting,container,false);

context = view.getContext();

initView(view);

btn_save.setOnClickListener(new ButtonOnClickLisener());

return view;

}

private void initView(View view){

edit_name = view.findViewById(R.id.edit_defaultName);

btn_save = view.findViewById(R.id.btn_save);

chb_defaultName = view.findViewById(R.id.chb_name);

spinner = view.findViewById(R.id.spinner);

}

public class ButtonOnClickLisener implements View.OnClickListener{

@Override

public void onClick(View v) {

SharedPreferences sharedPreferences = context.getSharedPreferences(“Info”,Context.MODE_PRIVATE);

SharedPreferences.Editor editor = sharedPreferences.edit();

int defaultRange = Integer.valueOf(spinner.getSelectedItem().toString());

editor.putInt(“range”,defaultRange);

if (chb_defaultName.isChecked()){

String defaultName = edit_name.getText().toString();

if (defaultName.isEmpty()){

Toast.makeText(context,“请输入默认姓名！”,Toast.LENGTH_SHORT).show();

return;

}

editor.putString(“name”,defaultName);

}

else {

editor.remove(“name”);

}

if (editor.commit()){

Toast.makeText(context,“保存成功！”,Toast.LENGTH_SHORT).show();

}

}

}

}

完成可执行run，在模拟器跑一下。

【“猜数”模块的实现】

猜数模块布局文件"fragment_guess.xml"内容如下：

<RelativeLayout 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=".GuessFragment"

android:background="#ffffff"

android:orientation=“vertical”>

<TextView

android:id="@+id/txt_range"

android:layout_width=“wrap_content”

android:layout_height=“wrap_content”

android:layout_marg
in=“5dp”

android:textSize=“22dp”/>

<EditText

android:id="@+id/edit_num"

android:layout_width=“match_parent”

android:layout_height=“wrap_content”

android:layout_marginTop=“10dp”

android:layout_below="@id/txt_range"

android:padding=“8dp”

android:inputType=“numberSigned”

android:textSize=“22dp”/>

<Button

android:id="@+id/btn_submit"

android:layout_width=“match_parent”

android:layout_height=“wrap_content”

android:layout_marginTop=“10dp”

android:layout_below="@id/edit_num"

android:textSize=“22dp”/>

<TextView

android:id="@+id/txt_compare"

android:layout_width=“wrap_content”

android:layout_height=“wrap_content”

android:layout_marginTop=“10dp”

android:textSize=“22dp”

android:layout_below="@id/btn_submit"

android:layout_centerHorizontal=“true”/>

<ImageView

android:id="@+id/img_broad"

android:layout_width=“60dp”

android:layout_height=“60dp”

android:layout_margin=“10dp”

android:layout_toStartOf="@id/txt_compare"

android:layout_toLeftOf="@id/txt_compare"

android:layout_below="@id/btn_submit"/>

<TextView

android:id="@+id/txt_count"

android:layout_width=“wrap_content”

android:layout_height=“wrap_content”

android:layout_marginTop=“10dp”

android:textSize=“22dp”

android:layout_below="@id/txt_compare"

android:layout_alignLeft="@id/txt_compare"

android:layout_alignStart="@id/txt_compare"

/>

<ImageView

android:id="@+id/img_bingo"

android:layout_width=“wrap_content”

android:layout_height=“wrap_content”

android:layout_below="@id/img_broad"

android:layout_centerHorizontal=“true”

android:layout_marginTop=“10dp”

android:src="@drawable/bingo"/>

在GuessFragment类中实现猜数判断逻辑：

package com.example.mygame;

import android.content.ContentValues;

import android.content.Context;

import android.content.SharedPreferences;

import android.database.sqlite.SQLiteDatabase;

import android.support.v4.app.Fragment;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ImageView;

import android.widget.TextView;

import android.widget.Toast;

import java.util.Random;

public class GuessFragment extends Fragment {

private int count,rndNum;

private EditText edit_num;

private TextView txt_range,txt_compare,txt_count;

private Button btn_submit;

private ImageView img_broad,img_bingo;

private boolean flag;

private String name;

public int range = 0;

private Context context;

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState){

View view = inflater.inflate(R.layout.fragment_guess,container,false);

context = view.getContext();

initView(view);

initData();

btn_submit.setOnClickListener(new ButtonOnClickLisener());

return view;

}

private void initView(View view){

edit_num = view.findViewById(R.id.edit_num);

txt_range = view.findViewById(R.id.txt_range);

txt_compare = view.findViewById(R.id.txt_compare);

txt_count = view.findViewById(R.id.txt_count);

btn_submit = view.findViewById(R.id.btn_submit);

img_broad = view.findViewById(R.id.img_broad);

img_bingo = view.findViewById(R.id.img_bingo);

}

public void initData(){

SharedPreferences sharedPreferences = context.getSharedPreferences(“Info”,Context.MODE_PRIVATE);

name = sharedPreferences.getString(“name”,"");

range = sharedPreferences.getInt(“range”,100);

Random mRandom = new Random();

rndNum = mRandom.nextInt(range)+1;

txt_range.setText(“请输入1-”+range+“之间的整数”);

txt_count.setText("");

txt_compare.setText("");

img_broad.setVisibility(View.INVISIBLE);

img_bingo.setVisibility(View.INVISIBLE);

btn_submit.setText(“提交”);

flag = true;

count = 0;

}

private class ButtonOnClickLisener implements View.OnClickListener{

@Override

public void onClick(View v) {

if (flag){

String str_num = edit_num.getText().toString();

if (str_num.isEmpty()){

Toast.makeText(context,“请输入数字！”,Toast.LENGTH_SHORT).show();

return;

}

edit_num.setText("");

int numInput = Integer.valueOf(str_num);

if (numInput<1 || numInput > range){

Toast.makeText(context,“请输入范围内的数字！”,Toast.LENGTH_SHORT).show();

return;

}

count += 1;

img_broad.setVisibility(View.VISIBLE);

txt_count.setText(“猜数次数：”+count);

if (numInput > rndNum){

txt_compare.setText(“输入的”+str_num+“太大了！”);

}else if(numInput < rndNum){

txt_compare.setText(“输入的”+str_num+“太小了！”);

}else{

txt_compare.setText(“恭喜你猜对啦！正确答案是：”+rndNum+"!");

img_bingo.setVisibility(View.VISIBLE);

flag = false;

btn_submit.setText(“再猜一次”);

if (name.isEmpty()){

final CustomDialog dialog = new CustomDialog(context,R.style.MyDialog);

dialog.show();

Button btn_confirm = dialog.findViewById(R.id.btn_confirm);

final EditText edit_name = dialog.findViewById(R.id.edit_inputName);

btn_confirm.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

name = edit_name.getText().toString();

if (!name.isEmpty()){

insertData();

dialog.dismiss();

}

}

});

} else {

insertData();

}

}

}else {

initData();

}

}

}

private void insertData(){

MyHelper helper = new MyHelper(context,“Guess.db”,null,1);

SQLiteDatabase db = helper.getWritableDatabase();

ContentValues values = new ContentValues();

values.put(“name”,name);

values.put(“count”,count);

values.put(“range”,range);

db.insert(“ordertb”,null,values);

db.close();

}

}

可以发现，在GuessFragment类中，引入了CustomDialog类，这是自定义的对话框，用于前面基本构思说的，用户在进行猜数游戏时，如果在设置页中，不选择使用默认姓名的话，游戏结束会要求用户输入用户名。

CustomDialog自定义对话框的具体实现如下：

布局文件“alertdialog_input.xml”:

<LinearLayout 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_horizontal”

android:background="#80BCF7"

android:padding=“20dp”>

<TextView

android:id="@+id/txt_info"

android:layout_width=“match_parent”

android:layout_height=“50dp”

android:layout_marginTop=“5dp”

android:gravity=“center”

android:text="@string/txt_dialog_info"

android:textSize=“22dp”

android:textColor="#ffffff"

/>

<EditText

android:id="@+id/edit_inputName"

android:layout_width=“match_parent”

android:layout_height=“wrap_content”

android:textSize=“20dp”

android:padding=“8dp”/>

<Button

android:id="@+id/btn_confirm"

android:layout_width=“match_parent”

android:layout_height=“wrap_content”

android:text="@string/btn_dialog_confirm"

android:textSize=“20dp”/>

布局文件中涉及到的“strings.xml”文件内容如下：

请输入姓名

确定

CustomDialog类实现代码：

package com.example.mygame;

import android.app.Dialog;

import android.content.Context;

import android.os.Bundle;

import android.view.Gravity;

import android.view.WindowManager;

public class CustomDialog extends Dialog {

private Context context;

public CustomDialog(Context context,int themeResId) {

super(context,themeResId);

this.context = context;

}

@Override

protected void onCreate(Bundle savedInstanceState){

super.onCreate(savedInstanceState);

this.setContentView(R.layout.alertdialog_input);

}

@Override

public void show(){

super.show();

// 设置对话框宽度、对齐方式等

WindowManager.LayoutParams layoutParams = getWindow().getAttributes();

layoutParams.gravity = Gravity.CENTER;

layoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;

layoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;

// getWindow().getDecorView().setPadding(0,0,0,0);

getWindow().setAttributes(layoutParams);

}

}

【“排行榜”模块的实现】

该模块布局文件“fragment_order.xml””内容如下：

<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”

tools:context=".OrderFragment">

<android.support.v4.view.ViewPager

android:id="@+id/viewpager"

android:layout_width=“match_parent”

android:layout_height=“wrap_content”

OrderFragment类逻辑代码实现：

package com.example.mygame;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

import android.graphics.Color;

import android.support.annotation.NonNull;

import android.support.v4.app.Fragment;

import android.support.v4.view.PagerAdapter;

import android.support.v4.view.PagerTabStrip;

import android.support.v4.view.ViewPager;

import android.os.Bundle;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import java.util.ArrayList;

public class OrderFragment extends Fragment {

private ListView lv_hunderd,lv_thousand,lv_tenthousand;

private ViewPager pager;

private Context context;

private PagerTabStrip tabStrip;

private ArrayList viewContainer;

private ArrayList titleContainer;

private ArrayList[] data; //用于为每个pager的ListView准备数据

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState){

View view = inflater.inflate(R.layout.fragment_order,container,false);

context = view.getContext();

initView(view);

pagersetAdapter();

return view;

}

private void initData(){

MyHelper helper = new MyHelper(context,“Guess.db”,null,1);

SQLiteDatabase db = helper.getReadableDatabase();

int[] ranges = {100,1000,1000};

data = new ArrayList[3];

data[0] = new ArrayList<>();

data[1] = new ArrayList<>();

data[2] = new ArrayList<>();

for (int i = 0; i < 3; i++) {

Cursor c = db.query(“ordertb”,null,null,null

,null,null,“count”);

if (c.getCount()>0){

while (c.moveToNext()){

data[i].add(“姓名：”+c.getString(c.getColumnIndex(“name”))+"\t\t花费次数: "+

c.getString(c.getColumnIndex(“count”)));

}

}else {

Log.i(“info”,“数据库无数据”);

}

c.close();

}

db.close();

}

private void initListView(){

ArrayAdapter adapter_hundred = new ArrayAdapter(context,android.R.layout.simple_expandable_list_item_1,data[0]);

lv_hunderd.setAdapter(adapter_hundred);

ArrayAdapter adapter_thousand = new ArrayAdapter(context,android.R.layout.simple_expandable_list_item_1,data[1]);

lv_hunderd.setAdapter(adapter_thousand);

ArrayAdapter adapter_tenthousand = new ArrayAdapter(context,android.R.layout.simple_expandable_list_item_1,data[2]);

lv_hunderd.setAdapter(adapter_tenthousand);

}

private void initView(View view){

pager = view.findViewById(R.id.viewpager);

tabStrip = view.findViewById(R.id.tabstrip);

tabStrip.setDrawFullUnderline(false);

tabStrip.setBackgroundColor(Color.parseColor("#ccccff"));

tabStrip.setTabIndicatorColor(Color.parseColor("#6666ff"));

LayoutInflater inflater = getActivity().getLayoutInflater();

View view_tab1 = inflater.inflate(R.layout.viewpager_tab_hundred,null);

// View view_tab2 = inflater.inflate(R.layout.viewpager_tab_thousand,null);

// View view_tab3 = inflater.inflate(R.layout.viewpager_tab_tenthousand,null);

lv_hunderd = view_tab1.findViewById(R.id.lv_hundred);

// lv_thousand = view_tab2.findViewById(R.id.lv_thousand);

// lv_tenthousand = view_tab3.findViewById(R.id.lv_tenthousand);

initData();

initListView();

// 添加到ViewPager

viewContainer = new ArrayList<>();

viewContainer.add(view_tab1);

// viewContainer.add(view_tab2);

// viewContainer.add(view_tab3);

// 设置标题

titleContainer = new ArrayList<>();

titleContainer.add(“排行榜”);

// titleContainer.add(“1-1000排行榜”);

// titleContainer.add(“1-10000排行榜”);

}

private void pagersetAdapter(){

pager.setAdapter(new PagerAdapter() {

@Override

public int getCount() {

return viewContainer.size();

}

@Override

public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {

return view == object;

}

@Override

public void destroyItem(ViewGroup container,int position,Object object){

((ViewPager)container).removeView(viewContainer.get(position));

}

  View view_tab3 = inflater.inflate(R.layout.viewpager_tab_tenthousand,null);

lv_hunderd = view_tab1.findViewById(R.id.lv_hundred);

// lv_thousand = view_tab2.findViewById(R.id.lv_thousand);

// lv_tenthousand = view_tab3.findViewById(R.id.lv_tenthousand);

initData();

initListView();

// 添加到ViewPager

viewContainer = new ArrayList<>();

viewContainer.add(view_tab1);

// viewContainer.add(view_tab2);

// viewContainer.add(view_tab3);

// 设置标题

titleContainer = new ArrayList<>();

titleContainer.add(“排行榜”);

// titleContainer.add(“1-1000排行榜”);

// titleContainer.add(“1-10000排行榜”);

}

private void pagersetAdapter(){

pager.setAdapter(new PagerAdapter() {

@Override

public int getCount() {

return viewContainer.size();

}

@Override

public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {

return view == object;

}

@Override

public void destroyItem(ViewGroup container,int position,Object object){

((ViewPager)container).removeView(viewContainer.get(position));

}