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    相信每個項目都會有用戶反饋建議等功能,這個實現的方法很多,下面是我實現的方法,供大家交流。首先看具體界面,三個字段。名字,郵箱為選填,可以為空,建議不能為空。如有需要可以給我留言。
     
    下面貼出布局代碼,這里用到一個<include layout="@layout/uphead">就是把另外一個布局文件引入到這個布局中。

    復制代碼 代碼如下:


    <?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"
    android:background="@color/bg_gray" >
    <include layout="@layout/uphead"/>
    <!-- Name Label -->
    <TextView android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="名字(選填)"
    android:paddingLeft="10dip"
    android:paddingRight="10dip"
    android:textColor="@color/coffee"
    android:paddingTop="10dip"
    android:textSize="12sp"/>
    <!-- Input Name -->
    <EditText android:id="@+id/inputName"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_margin="5dip"
    android:layout_marginBottom="15dip"
    android:singleLine="true"/>
    <!-- Price Label -->
    <TextView android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="郵箱(選填)"
    android:paddingLeft="10dip"
    android:paddingRight="10dip"
    android:textColor="@color/coffee"
    android:paddingTop="10dip"
    android:textSize="12sp"/>
    <!-- Input Price -->
    <EditText android:id="@+id/inputEmail"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_margin="5dip"
    android:layout_marginBottom="15dip"
    android:singleLine="true"/>
    <!-- Description Label -->
    <TextView android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="建議(必填)"
    android:paddingLeft="10dip"
    android:paddingRight="10dip"
    android:paddingTop="10dip"
    android:textColor="@color/coffee"
    android:textSize="12sp"/>
    <!-- Input description -->
    <EditText android:id="@+id/inputDesc"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_margin="5dip"
    android:layout_marginBottom="15dip"
    android:lines="4"
    android:gravity="top"/>
    <!-- Button Create Product -->
    <Button android:id="@+id/btnCreateProduct"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="提交"
    android:textSize="20sp"
    android:textColor="@color/coffee"
    />
    </LinearLayout>


    下面貼出uphead的布局代碼,里面用到一個TextView,一個Button為返回按鈕。

    復制代碼 代碼如下:


    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="50dp"
    android:background="@drawable/top" >
    <TextView
    android:id="@+id/tv_head"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:shadowColor="#ff000000"
    android:shadowDx="2"
    android:shadowDy="0"
    android:shadowRadius="1"
    android:text=""
    android:textColor="@color/white"
    android:textSize="18sp"
    android:textStyle="bold" />
    <Button
    android:id="@+id/upback"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_centerVertical="true"
    android:layout_marginLeft="17dp"
    android:drawableLeft="@id/tv_head"
    android:background="@drawable/back" />
    </RelativeLayout>


    下面貼出android客戶端代碼,三個類,一個用于與服務器交互發送post請求,以及json的傳遞。還有一個Dailog實例。

    復制代碼 代碼如下:


    package com.android.up;
    import java.util.ArrayList;
    import java.util.List;
    import org.apache.http.HttpResponse;
    import org.apache.http.NameValuePair;
    import org.apache.http.client.ClientProtocolException;
    import org.apache.http.message.BasicNameValuePair;
    import org.json.JSONObject;
    import com.android.MainActivity;
    import com.android.R;
    import com.anroid.net.DialogUtil;
    import android.app.Activity;
    import android.app.ProgressDialog;
    import android.content.Intent;
    import android.os.AsyncTask;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.TextView;
    public class up extends Activity {
    // Progress Dialog
    private ProgressDialog pDialog;
    private TextView tv_head;
    JSONParser jsonParser = new JSONParser();
    EditText inputName;
    EditText inputEmail;
    EditText inputDesc;
    Button upback;
    // url to create new product
    private static String url_up = "http://10.0.2.2/up/up.php";//此處寫的是你的服務器端的地址
    @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.up);
    tv_head = (TextView)findViewById(R.id.tv_head);
    tv_head.setText("建議");
    // Edit Text
    inputName = (EditText) findViewById(R.id.inputName);
    inputEmail = (EditText) findViewById(R.id.inputEmail);
    inputDesc = (EditText) findViewById(R.id.inputDesc);
    upback = (Button)findViewById(R.id.upback);
    upback.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View arg0) {
    // TODO Auto-generated method stub
    Intent back = new Intent(up.this,MainActivity.class);
    back.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    startActivity(back);
    up.this.finish();
    }
    });
    // Create button
    Button btnCreateProduct = (Button) findViewById(R.id.btnCreateProduct);
    // button click event
    btnCreateProduct.setOnClickListener(new View.OnClickListener() {
    public void onClick(View view) {
    // creating new product in background thread
    if(validate()){
    new Up().execute();
    }
    }
    });
    }
    private boolean validate()
    {
    String description = inputDesc.getText().toString().trim();
    if (description.equals(""))
    {
    DialogUtil.showDialog(this, "您還沒有填寫建議", false);
    return false;
    }
    return true;
    }
    /**
    * Background Async Task to Create new product
    * */
    class Up extends AsyncTask<String, String, String> {
    /**
    * Before starting background thread Show Progress Dialog
    * */
    @Override
    protected void onPreExecute() {
    super.onPreExecute();
    pDialog = new ProgressDialog(up.this);
    pDialog.setMessage("正在上傳..");
    pDialog.setIndeterminate(false);
    pDialog.setCancelable(true);
    pDialog.show();
    }
    /**
    * Creating product
    * */
    protected String doInBackground(String... args) {
    String name = inputName.getText().toString();
    String price = inputEmail.getText().toString();
    String description = inputDesc.getText().toString();
    // Building Parameters
    List<NameValuePair> params = new ArrayList<NameValuePair>();
    params.add(new BasicNameValuePair("name", name));
    params.add(new BasicNameValuePair("email", price));
    params.add(new BasicNameValuePair("description", description));
    // getting JSON Object
    // Note that create product url accepts POST method
    try{
    JSONObject json = jsonParser.makeHttpRequest(url_up,
    "POST", params);
    }catch(Exception e){
    e.printStackTrace();
    }
    // check for success tag
    return null;
    }
    /**
    * After completing background task Dismiss the progress dialog
    * **/
    protected void onPostExecute(String file_url) {
    pDialog.setMessage("上傳成功");
    pDialog.dismiss();

    }
    }
    }


    下面貼出Dailog實例類

    復制代碼 代碼如下:


    /**
    *
    */
    package com.anroid.net;
    import android.app.AlertDialog;
    import android.content.Context;
    import android.content.DialogInterface;
    import android.content.DialogInterface.OnClickListener;
    import android.view.View;
    import android.app.Activity;
    public class DialogUtil
    {
    // 定義一個顯示消息的對話框
    public static void showDialog(final Context ctx
    , String msg , boolean closeSelf)
    {
    // 創建一個AlertDialog.Builder對象
    AlertDialog.Builder builder = new AlertDialog.Builder(ctx)
    .setMessage(msg).setCancelable(false);
    if(closeSelf)
    {
    builder.setPositiveButton("確定", new OnClickListener()
    {
    public void onClick(DialogInterface dialog, int which)
    {
    // 結束當前Activity
    ((Activity)ctx).finish();
    }
    });
    }
    else
    {
    builder.setPositiveButton("確定", null);
    }
    builder.create().show();
    }
    // 定義一個顯示指定組件的對話框
    public static void showDialog(Context ctx , View view)
    {
    AlertDialog.Builder builder = new AlertDialog.Builder(ctx)
    .setView(view).setCancelable(false)
    .setPositiveButton("確定", null);
    builder.create()
    .show();
    }
    }


    剩下就是如何與服務器端交互了不多說,代碼如下

    復制代碼 代碼如下:


    package com.android.up;
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.UnsupportedEncodingException;
    import java.util.List;
    import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.NameValuePair;
    import org.apache.http.client.ClientProtocolException;
    import org.apache.http.client.entity.UrlEncodedFormEntity;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.protocol.HTTP;
    import org.json.JSONException;
    import org.json.JSONObject;
    import android.util.Log;
    public class JSONParser {
    static InputStream is = null;
    static JSONObject jObj = null;
    static String json = "";
    // constructor
    public JSONParser() {
    }
    // function get json from url
    // by making HTTP POST
    public JSONObject makeHttpRequest(String url, String method,
    List<NameValuePair> params) {
    // Making HTTP request
    try {
    // request method is POST
    // defaultHttpClient
    DefaultHttpClient httpClient = new DefaultHttpClient();
    HttpPost httpPost = new HttpPost(url);
    httpPost.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
    HttpResponse httpResponse = httpClient.execute(httpPost);
    HttpEntity httpEntity = httpResponse.getEntity();
    is = httpEntity.getContent();
    } catch (UnsupportedEncodingException e) {
    e.printStackTrace();
    } catch (ClientProtocolException e) {
    e.printStackTrace();
    } catch (IOException e) {
    e.printStackTrace();
    }
    try {
    BufferedReader reader = new BufferedReader(new InputStreamReader(
    is, "UTF-8"));
    StringBuilder sb = new StringBuilder();
    String line = null;
    while ((line = reader.readLine()) != null) {
    sb.append(line + "\n");
    }
    is.close();
    json = sb.toString();
    } catch (Exception e) {
    Log.e("Buffer Error", "Error converting result " + e.toString());
    Log.d("json", json.toString());
    }
    // try parse the string to a JSON object
    try {
    jObj = new JSONObject(json);
    } catch (JSONException e) {
    Log.e("JSON Parser", "Error parsing data " + e.toString());
    }
    // return JSON String
    return jObj;
    }
    }


    到此android客戶端已經完成,后天服務器端用php+mysql實現,當然這里只是個實例,存取到數據庫里面,沒有進行展示,代碼如下

    復制代碼 代碼如下:


    <?php
    // array for JSON response
    $response = array();
    include("conn.php");
    // check for required fields
    if (isset($_POST['name']) && isset($_POST['email']) && isset($_POST['description'])) {
    $name = $_POST['name'];
    $price = $_POST['email'];
    $description = $_POST['description'];
    $result = mysql_query("INSERT INTO up(name, email, description) VALUES('$name', '$email', '$description')");
    echo $result;
    // check if row inserted or not
    if ($result) {
    // successfully inserted into database
    $response["success"] = 1;
    $response["message"] = "Product successfully created.";
    // echoing JSON response
    echo json_encode($response);
    } else {
    // failed to insert row
    $response["success"] = 0;
    $response["message"] = "Oops! An error occurred.";
    // echoing JSON response
    echo json_encode($response);
    }
    } else {
    // required field is missing
    $response["success"] = 0;
    $response["message"] = "Required field(s) is missing";
    // echoing JSON response
    echo json_encode($response);
    }
    ?>


    數據庫表結構如下,連接數據庫代碼就不貼出了,記得把編碼設置為UTF-8就行了。

    到此就完成了一個用戶反饋的基本功能,后臺數據里展示。

     

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