Final Exam Of The Sysu SE Android Class

在Android平台上实现一个本地应用——大学城特惠网

Some key codes

应用功能描述:
- 1. 具有登录界面,可以输入账号和密码,并且有两个按钮“登录”和“退出”。如果点击“退出”按钮可以直接退出程序(如图一所示);
- 1. 登录账号和密码可任意输入,当账号和密码非空且一样时视作合法。如果输入信息不合法时,显示“账号或密码错误!”(如图二,图三所示);
- 1. 成功登录后显示主界面(如图四所示):主界面顶部显示登录界面输入的账号,下面是一个列表,显示特惠信息表中所有条目(每个条目显示学校与打折信息);
- 1. 点击每个列表项可进入查看相应的特惠信息的明细(参照特惠信息表),点击“返回”按钮可以返回到主界面
- 1. 附加功能:
  2. 1, 使用对话框的形式代替原来输入非法登录信息的提示方式,要求如下:
    - 1. 对话框给出提示文字;
    - ii. 包含两个按钮:点击“是”按钮后回到登录界面,点击“否”按钮后退出程序。
  3. 2, 在桌面上显示本应用的 Widget 组件,要求如下:
    - 1. 能显示一些关于本应用的信息(例如应用名);
    - ii. 包含一个按钮,点击此按钮后能启动本应用。
  4. 3, 记住账号与密码,要求如下:
    - 1. 程序退出后记住当前登录用户的账号与密码,重新打开本应用后能自动填充两个文本框。
  5. 4, 记录用户登录的时间,要求如下:
    - 1. 在主界面显示当前用户登录的时间(X 分 X 秒),并且能够实时刷新.

public class MainActivity extends Activity {

  private Button login;
  private Button quitButton;
  private EditText nameEditText;
  private EditText pwdEditText; 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      login = (Button)findViewById(R.id.button2);
      quitButton = (Button)findViewById(R.id.button1);
      nameEditText = (EditText)findViewById(R.id.name);
      pwdEditText = (EditText)findViewById(R.id.pwd);
      
      login.setOnClickListener(new OnClickListener() {
          
          @Override
          public void onClick(View arg0) {
              // TODO Auto-generated method stub
              if(!nameEditText.getText().toString().equals("") && !pwdEditText.getText().toString().equals("") || (pwdEditText.getText().toString() == nameEditText.getText().toString())){
                  Toast.makeText(MainActivity.this ,"login successfully", Toast.LENGTH_LONG).show();
                  Intent intent = new Intent();
                  intent.setClass(MainActivity.this, listplace.class);
                  startActivity(intent);
                  finish();
              }else{
                  Toast.makeText(MainActivity.this ,"login failed", Toast.LENGTH_LONG).show();
              }
          }
      });
      
      quitButton.setOnClickListener(new OnClickListener() {
          
          @Override
          public void onClick(View arg0) {
              // TODO Auto-generated method stub
              finish();
          }
      });
      
      
  }

  @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;
  }

}

package com.example.final_test1;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class listplace extends Activity{
  private ListView listView;
  private List<HashMap<String, String>> mdaList = new ArrayList<HashMap<String,String>>();
  
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.listplace);
      setData();
      listView = (ListView)findViewById(R.id.listView1);
      String from[] = new String[] { "info", "content" };
      int to[] = new int[] { R.id.info, R.id.content };
      SimpleAdapter spAdapter = new SimpleAdapter(this, mdaList, R.layout.listviewitem, from, to);
      OnItemClickListener clItemClickListener = new OnItemClickListener() {

          @Override
          public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                  long arg3) {
              Bundle bundle = new Bundle();
              bundle.putString("info", (String)mdaList.get(arg2).get("info"));
              bundle.putString("content", (String)mdaList.get(arg2).get("content"));
              bundle.putString("address", (String)mdaList.get(arg2).get("address"));
              bundle.putString("phone", (String)mdaList.get(arg2).get("phone"));
              
              Intent intent = new Intent();
              intent.setClass(listplace.this, c1.class);
              intent.putExtras(bundle);
              startActivity(intent);
              finish();
      
          }
      };
      listView.setAdapter(spAdapter);
      listView.setOnItemClickListener(clItemClickListener);
  }
  
  private void setData(){
      HashMap<String, String> map = new HashMap<String, String>();
      map.put("info", "中山大学特惠信息");
      map.put("content", "湖畔餐厅打折套餐");
      map.put("address", "内环东路中大生活区");
      map.put("phone", "135XXXX8888");
      mdaList.add(map);
      
      map = new HashMap<String, String>();
      map.put("info", "广东外语外贸大学特惠信息");
      map.put("content", "云山水榭，5折k歌");
      map.put("address", "内环东路广外生活区");
      map.put("phone", "136XXXX9900");
      mdaList.add(map);
      
      map = new HashMap<String, String>();
      map.put("info", "华南师范大学特惠信息");
      map.put("content", "华师体育用品");
      map.put("address", "中环西路华师生活区");
      map.put("phone", "137XXXX4458");
      mdaList.add(map);
  }

}

package com.example.final_test1;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class c1 extends Activity{
  private TextView tv ;
  private Button bt;
  
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.c1);
      tv = (TextView)findViewById(R.id.tv);
      bt = (Button)findViewById(R.id.b1);
      
      Bundle bundle = this.getIntent().getExtras();
      String infoString = bundle.getString("info");
      String addressString = bundle.getString("address");
      String contentString = bundle.getString("content");
      String phoneString = bundle.getString("phone");
      
      tv.setText(infoString + "\n" + addressString + "\n" + contentString + "\n" + phoneString + "\n");
      
      bt.setOnClickListener(new OnClickListener() {
          
          @Override
          public void onClick(View arg0) {
              // TODO Auto-generated method stub
              Intent intent = new Intent();
              intent.setClass(c1.this, listplace.class);
              startActivity(intent);
              finish();
          }
      });
  }
}

<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:text="大学城特惠网"
        android:textSize="30dp" />

    <EditText
        android:id="@+id/name"
        android:hint="请输入您的账号"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <EditText
        android:id="@+id/pwd"
        android:hint="输入登录密码"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10" />

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

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="150dp"
            android:text="登陆" />

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="退出" />

    </LinearLayout>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="20dp"
        android:text="android会员你好" />

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/info"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <TextView
        android:id="@+id/content"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/tv"
        android:layout_width="fill_parent"
        android:layout_height="90dp"
         />

    <Button
        android:id="@+id/b1"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:text="返回" />

</LinearLayout>

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Final Exam of the Sysu SE Android Class

在Android平台上实现一个本地应用——大学城特惠网

Some key codes

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