相信每个项目都会有用户反馈建议等功能，这个实现的方法很多，下面是我实现的方法，供大家交流。首先看具体界面，三个字段。名字，邮箱为选填，可以为空，建议不能为空。如有需要可以给我留言。
下面贴出布局代码，这里用到一个就是把另外一个布局文件引入到这个布局中。
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/> textview android:layout_width=fill_parent android:layout_height=wrap_content android:text=名字(选填) android:paddingleft=10dip android:paddingright=10dip android:textcolor=@color/coffee android:paddingtop=10dip android:textsize=12sp/> 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/> textview android:layout_width=fill_parent android:layout_height=wrap_content android:text=邮箱(选填) android:paddingleft=10dip android:paddingright=10dip android:textcolor=@color/coffee android:paddingtop=10dip android:textsize=12sp/> 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/> textview android:layout_width=fill_parent android:layout_height=wrap_content android:text=建议(必填) android:paddingleft=10dip android:paddingright=10dip android:paddingtop=10dip android:textcolor=@color/coffee android:textsize=12sp/> 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 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>
下面贴出uphead的布局代码，里面用到一个textview,一个button为返回按钮。
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>
下面贴出android客户端代码，三个类，一个用于与服务器交互发送post请求，以及json的传递。还有一个dailog实例。
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;
private static final string tag_message = message;
@override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.up); tv_head = (textview)findviewbyid(r.id.tv_head); tv_head.settext(建议); // 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, 您还没有填写建议, false); return false; } return true; } /** * background async task to create new product * */ class up extends asynctask { /** * before starting background thread show progress dialog * */ @override protected void onpreexecute() { super.onpreexecute(); pdialog = new progressdialog(up.this); pdialog.setmessage(正在上传..); pdialog.setindeterminate(false); pdialog.setcancelable(true); pdialog.show(); } /** * creating product * */ protected string doinbackground(string... args) { string name = inputname.gettext().tostring(); string email = inputemail.gettext().tostring(); string description = inputdesc.gettext().tostring(); // building parameters list params = new arraylist(); params.add(new basicnamevaluepair(name, name)); params.add(new basicnamevaluepair(email, email)); 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);
string message = json.getstring(tag_message);
            return message; }catch(exception e){ e.printstacktrace();
return ; } // check for success tag } /** * after completing background task dismiss the progress dialog * **/ protected void onpostexecute(string message) { pdialog.dismiss();
//message 为接收doinbackground的返回值
            toast.maketext(getapplicationcontext(), message, 8000).show();    } } }
下面贴出dailog实例类
/** * */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{ // 定义一个显示消息的对话框 public static void showdialog(final context ctx , string msg , boolean closeself) { // 创建一个alertdialog.builder对象 alertdialog.builder builder = new alertdialog.builder(ctx) .setmessage(msg).setcancelable(false); if(closeself) { builder.setpositivebutton(确定, new onclicklistener() { public void onclick(dialoginterface dialog, int which) { // 结束当前activity ((activity)ctx).finish(); } }); } else { builder.setpositivebutton(确定, null); } builder.create().show(); } // 定义一个显示指定组件的对话框 public static void showdialog(context ctx , view view) { alertdialog.builder builder = new alertdialog.builder(ctx) .setview(view).setcancelable(false) .setpositivebutton(确定, null); builder.create() .show(); }}
剩下就是如何与服务器端交互了不多说，代码如下
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 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客户端已经完成，后天服务器端用php+mysql实现，当然这里只是个实例，存取到数据库里面，没有进行展示，代码如下
php// array for json response$response = array();include(conn.php);// check for required fieldsif (isset($_post['name']) && isset($_post['email']) && isset($_post['description'])) { $name = $_post['name']; $email = $_post['email']; $description = $_post['description']; $result = mysql_query(insert into up(name, email, description) values('$name', '$email', '$description'));// 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);}?>
数据库表结构如下，连接数据库代码就不贴出了，记得把编码设置为utf-8就行了。
到此就完成了一个用户反馈的基本功能，后台数据里展示。如有问题欢迎给我留言。