Php 如何在Android中将Json字符串转换为ListView

Php 如何在Android中将Json字符串转换为ListView,php,android,sql,database,json,Php,Android,Sql,Database,Json,希望有人能帮助我理解这一点,我完全迷路了,似乎根本无法理解这一点 我有一个从数据库中提取信息的应用程序,目前,Android连接到一个PHP页面,结果打印在应用程序上,如: {“优惠”:“半价饮料”、“一天”:“星期一”} {“优惠”:“半价饮料”,“一天”:“星期二”} 我需要将其转换为列表视图,是否有人可以建议我如何执行此操作 我已经在连接到php页面的页面中输入了这些信息 public class BarsActivity extends Activity { TextView

希望有人能帮助我理解这一点,我完全迷路了,似乎根本无法理解这一点

我有一个从数据库中提取信息的应用程序,目前,Android连接到一个PHP页面,结果打印在应用程序上,如:

{“优惠”:“半价饮料”、“一天”:“星期一”}

{“优惠”:“半价饮料”,“一天”:“星期二”}

我需要将其转换为列表视图,是否有人可以建议我如何执行此操作

我已经在连接到php页面的页面中输入了这些信息

public class BarsActivity extends Activity {

     TextView txt;
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         // Create a crude view - this should really be set via the layout resources  
         // but since its an example saves declaring them in the XML.  
         LinearLayout rootLayout = new LinearLayout(getApplicationContext());  
         txt = new TextView(getApplicationContext());  
         rootLayout.addView(txt);  
         setContentView(rootLayout);  

         // Set the text and call the connect function.  
         txt.setText("Connecting..."); 
       //call the method to run the data retreival
         txt.setText(getServerData(KEY_121)); 



     }
     public static final String KEY_121 = "http://10.0.2.2/SocialCrawler/content.php"; //i use my real ip here



     private String getServerData(String returnString) {

        InputStream is = null;

        String result = "";
         //the year data to send
         ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
         nameValuePairs.add(new BasicNameValuePair("day","Monday"));

         //http post
         try{
                 HttpClient httpclient = new DefaultHttpClient();
                 HttpPost httppost = new HttpPost(KEY_121);
                 httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                 HttpResponse response = httpclient.execute(httppost);
                 HttpEntity entity = response.getEntity();
                 is = entity.getContent();

         }catch(Exception e){
                 Log.e("log_tag", "Error in http connection "+e.toString());
         }

         //convert response to string
         try{
                 BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
                 StringBuilder sb = new StringBuilder();
                 String line = null;
                 while ((line = reader.readLine()) != null) {
                         sb.append(line + "\n");
                 }
                 is.close();
                 result=sb.toString();
         }catch(Exception e){
                 Log.e("log_tag", "Error converting result "+e.toString());
         }
         //parse json data
         try{
                 JSONArray jArray = new JSONArray(result);
                 for(int i=0;i<jArray.length();i++){
                         JSONObject json_data = jArray.getJSONObject(i);
                         Log.i("log_tag","day: "+json_data.getString("day")+
                                 ", offer: "+json_data.getString("offer")
                         );
                         //Get an output to the screen
                         returnString += "\n\t" + jArray.getJSONObject(i); 
                 }
         }catch(JSONException e){
                 Log.e("log_tag", "Error parsing data "+e.toString());
         }
         return returnString; 

    }
}
公共类BarsActivity扩展活动{
文本视图;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//创建一个粗略的视图-这应该通过布局资源进行设置
//但是,因为这是一个示例,所以不需要在XML中声明它们。
LinearLayout rootLayout=新的LinearLayout(getApplicationContext());
txt=新文本视图(getApplicationContext());
rootLayout.addView(txt);
setContentView(rootLayout);
//设置文本并调用connect函数。
txt.setText(“连接…”);
//调用该方法以运行数据检索
setText(getServerData(KEY_121));
}
公共静态最终字符串键_121=”http://10.0.2.2/SocialCrawler/content.php“;//我在这里使用我的真实ip
私有字符串getServerData(字符串返回字符串){
InputStream=null;
字符串结果=”;
//要发送的年度数据
ArrayList nameValuePairs=新的ArrayList();
添加(新的BasicNameValuePair(“日”、“星期一”);
//http post
试一试{
HttpClient HttpClient=新的DefaultHttpClient();
HttpPost HttpPost=新的HttpPost(键号121);
setEntity(新的UrlEncodedFormEntity(nameValuePairs));
HttpResponse response=httpclient.execute(httppost);
HttpEntity=response.getEntity();
is=entity.getContent();
}捕获(例外e){
e(“Log_标记”,“http连接错误”+e.toString());
}
//将响应转换为字符串
试一试{
BufferedReader reader=新的BufferedReader(新的InputStreamReader(is,“iso-8859-1”),8;
StringBuilder sb=新的StringBuilder();
字符串行=null;
而((line=reader.readLine())!=null){
sb.追加(第+行“\n”);
}
is.close();
结果=sb.toString();
}捕获(例外e){
Log.e(“Log_标记”,“错误转换结果”+e.toString());
}
//解析json数据
试一试{
JSONArray jArray=新JSONArray(结果);

对于(int i=0;i通过迭代所有键->值将json转换为ArrayList,并诚实地使用ArrayAdapter

。互联网上有很多这样的例子。在这个网站上有很多这样的例子。数据如何映射到ListView?一个视图会显示今天的报价,还是ListView会显示今天的报价和即将到来的报价?i我只会显示当天的报价列表,我有它,所以用户选择了一天,然后将这一天传递到PHP文件,该文件返回当天的报价。也许有人可以帮助我完成教程,我已经获取了源代码并尝试输入我的信息,我说的唯一需要注意的事情是正确的吗nged是Main.java上文件的url、id、eqid和magnity,它们必须转换为数据库中的变量?