Android+PHP+MYSQL把数据库中的数据显示在Android界面上

俗话说，好记性不如烂笔头。今天终于体会其中的道理了。昨天写好的代码不知道为何找不到了。所以今天我一定得抽出一点时间把我的代码保存起来，以防我的代码再没有了。

还是先上图片。

这个界面是用ListView实现的，数据是数据库里面的数据，服务器为thinkPHP。我就不废话那么多，直接把我的代码拷贝上了、

总的思想就是，利用账号查询数据库中的信息，然后对返回的信息进行解析。这里我把账号保存到了本地。

Data.java

package cn.edu.aynu.rjxy.entity;public class Data {    private int id;    private String exp_name;    private String exp_tech;    private String exp_type;    private String exp_source;    private String exp_tno;    private String istate;    private String sno;    private String sname;    private String passwd;    private String grade;    private String school;    private String qq;    private String clas;    private String cellphone;    private String email;    private String spec;    public String getSpec() {        return spec;    }    public void setSpec(String spec) {        this.spec = spec;    }    public String getSno() {        return sno;    }    public void setSno(String sno) {        this.sno = sno;    }    public String getSname() {        return sname;    }    public void setSname(String sname) {        this.sname = sname;    }    public String getPasswd() {        return passwd;    }    public void setPasswd(String passwd) {        this.passwd = passwd;    }    public String getGrade() {        return grade;    }    public void setGrade(String grade) {        this.grade = grade;    }    public String getSchool() {        return school;    }    public void setSchool(String school) {        this.school = school;    }    public String getQq() {        return qq;    }    public void setQq(String qq) {        this.qq = qq;    }    public String getClas() {        return clas;    }    public void setClas(String clas) {        this.clas = clas;    }    public String getCellphone() {        return cellphone;    }    public void setCellphone(String cellphone) {        this.cellphone = cellphone;    }    public String getEmail() {        return email;    }    public void setEmail(String email) {        this.email = email;    }        public String getExp_type() {        return exp_type;    }    public void setExp_type(String exp_type) {        this.exp_type = exp_type;    }    public String getExp_source() {        return exp_source;    }    public void setExp_source(String exp_source) {        this.exp_source = exp_source;    }    public String getExp_tno() {        return exp_tno;    }    public void setExp_tno(String exp_tno) {        this.exp_tno = exp_tno;    }    public String getIstate() {        return istate;    }    public void setIstate(String istate) {        this.istate = istate;    }        public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getExp_name() {        return exp_name;    }    public void setExp_name(String exp_name) {        this.exp_name = exp_name;    }    public String getExp_tech() {        return exp_tech;    }    public void setExp_tech(String exp_tech) {        this.exp_tech = exp_tech;    }    @Override    public String toString() {        return "Data [id=" + id + ", exp_name=" + exp_name + ", exp_tech="                + exp_tech + "]";    }    }

SharedPreferencesUtils.java

package cn.edu.aynu.rjxy.utils;import java.util.HashMap;import java.util.Map;import android.content.Context;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;public class SharedPreferencesUtils {    //保存账号和密码到minemessage.xml    public static boolean saveUserInfo(Context context,String cellphone,String qq,String email){        SharedPreferences sp = context.getSharedPreferences("minemessage", Context.MODE_PRIVATE);        Editor edit = sp.edit();        edit.putString("cellphone", cellphone);        edit.putString("qq", qq);        edit.putString("email", email);        edit.commit();        return true;        }    //保存账号和密码到data.xml    public static boolean saveUserInfo02(Context context,String sno,String password,String spinnerId){        SharedPreferences sp = context.getSharedPreferences("data", Context.MODE_PRIVATE);        Editor edit = sp.edit();        edit.putString("sno", sno);        edit.putString("password", password);        edit.putString("spinnerId", spinnerId);        edit.commit();        return true;        }    //保存账号和密码到select.xml        public static boolean saveUserInfo03(Context context,String sno,String id){            SharedPreferences sp = context.getSharedPreferences("select", Context.MODE_PRIVATE);            Editor edit = sp.edit();            edit.putString("sno", sno);            edit.putString("id", id);            edit.commit();            return true;            }        //从data.xml文件中获取存贮的账号和密码    public static Map<String,String> getUserInfo(Context context){        SharedPreferences sp = context.getSharedPreferences("data", Context.MODE_PRIVATE);        String sno = sp.getString("sno", null);        String password = sp.getString("password", null);        String spinnerId = sp.getString("spinnerId", null);        Map<String,String> userMap = new HashMap<String, String>();        userMap.put("sno", sno);        userMap.put("password", password);        userMap.put("spinnerId", spinnerId);        return userMap;    }    //从minemessage.xml文件中获取存贮的账号和密码    public static Map<String,String> getUserInfo02(Context context){        SharedPreferences sp = context.getSharedPreferences("minemessage", Context.MODE_PRIVATE);        String cellphone = sp.getString("cellphone", null);        String qq = sp.getString("qq", null);        String email = sp.getString("email", null);        Map<String,String> userMap = new HashMap<String, String>();        userMap.put("cellphone", cellphone);        userMap.put("qq", qq);        userMap.put("email", email);        return userMap;        }    //从select.xml文件中获取存贮的账号和密码        public static Map<String,String> getUserInfo03(Context context){            SharedPreferences sp = context.getSharedPreferences("select", Context.MODE_PRIVATE);            String sno = sp.getString("sno", null);            String id = sp.getString("id", null);            Map<String,String> userMap = new HashMap<String, String>();            userMap.put("sno", sno);            return userMap;            }}

StreamTools.java

package cn.edu.aynu.rjxy.utils;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;public class StreamTools {       public static String readStream(InputStream is){        try {            ByteArrayOutputStream baos = new ByteArrayOutputStream();            byte[] buffer = new byte[1024];            int len = -1;            while ((len = is.read(buffer))!=-1) {                baos.write(buffer,0,len);            }            baos.close();            return new String(baos.toByteArray());        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();            return "";        }    }}

MineActivity.java

package cn.edu.aynu.rjxy.activity;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import java.util.ArrayList;import java.util.List;import java.util.Map;import org.apache.http.HttpResponse;import org.apache.http.StatusLine;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import cn.edu.aynu.rjxy.entity.Data;import cn.edu.aynu.rjxy.utils.SharedPreferencesUtils;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ListView;import android.widget.TextView;public class MineActivity extends Activity {    private static final int CHANGE_UI = 1;    private static final int ERROR = 2;    private ListView lv;    private List<Data> datas = new ArrayList<Data>();    //主线程创建消息处理器    private Handler handler = new Handler(){        public void handleMessage(android.os.Message msg) {            if (msg.what == CHANGE_UI) {                try {                    JSONArray arr = new JSONArray((String)msg.obj);                        for (int i = 0; i < arr.length(); i++) {                             JSONObject temp = (JSONObject) arr.get(i);                          // Log.d("json", temp.getInt("id")+temp.getString("exp_name")+temp.getString("exp_tech"));                          Data data = new Data();                                                        data.setId(temp.getInt("id"));                                               data.setExp_name(temp.getString("exp_name"));                          data.setExp_tech(temp.getString("exp_tech"));                              data.setExp_source(temp.getString("exp_source"));                          data.setExp_type(temp.getString("exp_type"));                          data.setExp_tno(temp.getString("tname"));                          data.setIstate(temp.getString("istate"));                         //这个地方可以获取到值但是适配器那位0                          datas.add(data);                                                                         }                      lv.setAdapter(new MyAdapter());                } catch (JSONException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }             }        };    };    protected String sno;            @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_mine);        lv = (ListView) findViewById(R.id.lv);        select();        //取出账号和密码        Map<String,String> userInfo = SharedPreferencesUtils.getUserInfo(this);                if (userInfo != null) {              sno = userInfo.get("sno");        }            }                        private void select(){        //子线程更新UI         new Thread(){                public void run(){                     try {                        StringBuilder builder = new StringBuilder();                        String path = "http://10.6.78.254:2016/xampp/graduate/index.php/home/Student/test_check";                         URL url = new  URL(path);                         HttpURLConnection conn = (HttpURLConnection) url.openConnection();                         //区别2、请求方式post                         conn.setRequestMethod("POST");                         conn.setRequestProperty("User-Agent", "Mozilla/5.0(compatible;MSIE 9.0;Windows NT 6.1;Trident/5.0)");                         //区别3、必须指定两个请求的参数                         conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");//请求的类型  表单数据                         //System.out.println(sno);                         String data = "sno="+sno;                         conn.setRequestProperty("Content-Length", data.length()+"");//数据的长度                         //区别4、记得设置把数据写给服务器                         conn.setDoOutput(true);//设置向服务器写数据                         byte[] bytes = data.getBytes();                         conn.getOutputStream().write(bytes);//把数据以流的方式写给服务器                         int code = conn.getResponseCode();                         if (code == 200) {                              InputStream is = conn.getInputStream();                             BufferedReader reader = new BufferedReader                                  (new InputStreamReader(is,"UTF-8"));                             for(String s=reader.readLine();s!=null;s=reader.readLine())                          {                              builder.append(s);                          }                          String content = builder.toString();                        //通知主线程更新UI                          Message message = new Message();                          message.what = CHANGE_UI;                          message.obj = content;                          handler.sendMessage(message);                    }else{                        Log.e(HomeActivity.class.toString(), "Failed");                    }                } catch (ClientProtocolException e) {                                        e.printStackTrace();                } catch (IOException e) {                                        e.printStackTrace();                }                                                        };            }.start();    }     class MyAdapter extends BaseAdapter{            @Override            public int getCount() {                Log.d("AAA", ""+datas.size());                        return datas.size();                                                }            @Override            public Object getItem(int position) {                        return datas.get(position);            }            @Override            public long getItemId(int position) {                                return position;            }                        @Override            public View getView(int position, View convertView, ViewGroup parent) {                View view = View.inflate(MineActivity.this, R.layout.ui_setting_select, null);                                TextView exp_name = (TextView) view.findViewById(R.id.tv_name);                TextView exp_tech = (TextView) view.findViewById(R.id.tv_tech);                TextView exp_type = (TextView) view.findViewById(R.id.tv_type);                TextView exp_source = (TextView) view.findViewById(R.id.tv_source);                TextView exp_tno = (TextView) view.findViewById(R.id.tv_tno);                                Data data = datas.get(position);                Log.d("aaaaa",datas.get(position).getExp_name() );                                                exp_name.setText(datas.get(position).getExp_name());                //Log.i("exp_name", datas.get(position).getExp_name());                exp_tech.setText(datas.get(position).getExp_tech());                exp_type.setText(datas.get(position).getExp_type());                exp_source.setText(datas.get(position).getExp_source());                exp_tno.setText(datas.get(position).getExp_tno());                                                return view;            }                 }}

activity_mine.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#FFFFFF"    android:padding="5dp"    android:orientation="vertical" >  <ListView          android:id="@+id/lv"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_marginLeft="5dp">     </ListView>  </RelativeLayout>

item_mine.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:padding="5dp"     android:background="#FFFFFF"    android:orientation="vertical">     <View     android:layout_width="fill_parent"    android:layout_height="2dip"    android:layout_marginTop="5dip"/>        <RelativeLayout     android:layout_width="fill_parent"    android:layout_height="wrap_content" >    <TextView        style="@style/LTexTviewStyle"        android:text="毕业设计名称" />    <TextView        android:id="@+id/tv_name"        style="@style/TextViewStyle"        android:text="25" />    </RelativeLayout>     <View     android:layout_width="fill_parent"    android:layout_height="0.2dip"    android:layout_marginTop="5dip"    android:background="#bb000000"/>    <RelativeLayout     android:layout_width="fill_parent"    android:layout_height="wrap_content" >    <TextView        style="@style/LTexTviewStyle"        android:text="题目类型" />    <TextView        android:id="@+id/tv_type"        style="@style/TextViewStyle"        android:text="25" />    </RelativeLayout>     <View     android:layout_width="fill_parent"    android:layout_height="0.2dip"    android:layout_marginTop="5dip"    android:background="#bb000000"/>    <RelativeLayout     android:layout_width="fill_parent"    android:layout_height="wrap_content" >    <TextView        style="@style/LTexTviewStyle"        android:text="题目来源" />    <TextView        android:id="@+id/tv_source"        style="@style/TextViewStyle"        android:text="25" />    </RelativeLayout>     <View     android:layout_width="fill_parent"    android:layout_height="0.2dip"    android:layout_marginTop="5dip"    android:background="#bb000000"/>    <RelativeLayout     android:layout_width="fill_parent"    android:layout_height="wrap_content" >    <TextView        style="@style/LTexTviewStyle"        android:text="指导老师" />    <TextView        android:id="@+id/tv_tno"        style="@style/TextViewStyle"        android:text="25" />    </RelativeLayout>     <View     android:layout_width="fill_parent"    android:layout_height="0.2dip"    android:layout_marginTop="5dip"    android:background="#bb000000"/>    <RelativeLayout     android:layout_width="fill_parent"    android:layout_height="wrap_content" >    <TextView        style="@style/LTexTviewStyle"        android:text="技术要求" />    <TextView        android:id="@+id/tv_tech"        style="@style/TextViewStyle"        android:text="25" />    </RelativeLayout>     <View     android:layout_width="fill_parent"    android:layout_height="0.2dip"    android:layout_marginTop="5dip"    android:background="#bb000000"/>    <RelativeLayout     android:layout_width="fill_parent"    android:layout_height="wrap_content" >   <Button        android:id="@+id/btn_reselect"       android:onClick="reselect"       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:text="退选"       android:layout_alignParentRight="true"       android:textColor="#000000"       android:background="#FFFFFF"/>       </RelativeLayout></LinearLayout>

PHP端的代码：

//Android端查看我的选题    public function test_check(){     $sno = I('sno');     $Experiment = M("Experiment");     //$sno = '130906008';    $exp_tno = $Experiment -> where("sno = '".$sno."'") -> getField('exp_tno');    //echo $exp_tno;    $RowCount = $Experiment -> where("sno = '".$sno."'") -> Count();    if($RowCount == 1){     $myModel = new \Think\Model();        $result=$myModel->query("select *from g_experiment,g_teacher where sno = $sno && tno = $exp_tno ;");        $this ->ajaxReturn($result);    }else{    echo '你还没有选题';    }    }

原文链接：http://www.cnblogs.com/kangyaping/p/5939735.html