android-设置动态listactivity

概述请指导以下代码出了什么问题,该代码未创建正确的列表活动,包括动态图像及其来自服务器的描述输出.这是图片 就像这样可以看出,仅加载了一张没有说明的图像,其余的甚至没有空间也没有图像,请指导xml和代码出了什么问题.这是代码主班publicclassTestextendsListActivity

请指导以下代码出了什么问题,该代码未创建正确的列表活动,包括动态图像及其来自服务器的描述
输出.这是图片
 

就像这样

可以看出,仅加载了一张没有说明的图像,其余的甚至没有空间也没有图像,请指导xml和代码出了什么问题.
这是代码

主班

public class Test extends ListActivity  {    @OverrIDe    public voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.Listplaceholder);        // install handler for processing gui update messages        ArrayList<HashMap<String, Object>> myList = new ArrayList<HashMap<String, Object>>();        JsONObject Json = JsONfunctions.getJsONfromURL("http://mIDsweden.gofreeserve.com/proj/androIDJson.PHP?IDentifIEr=123" );        try{            JsONArray  earthquakes = Json.getJsONArray("services");            for(int i=0;i<earthquakes.length();i++){                                        HashMap<String, Object> map = new HashMap<String, Object>();                 JsONObject e = earthquakes.getJsONObject(i);                map.put("ID", e.getString("taskID"));                map.put("pic", "Service name : " + e.getString("employeepic"));                map.put("serviceinfo", "" +  e.getString("employeename")+ " : "+ e.getString("starttime")                        +" To " +  e.getString("endtime"));                 String imageID = e.getString("employeepic");                    ImageVIEw iv = (ImageVIEw) findVIEwByID(R.ID.image);                    Bitmap b = getUserPic(imageID);                    iv.setimageBitmap(b);                    map.put("img",b);                myList.add(map);                        }               }catch(JsONException e)        {             Log.e("log_tag", "Error parsing data "+e.toString());        }        SimpleAdapter adapter = new SimpleAdapter(this, myList , R.layout.test,new String[] {"img", "servicename", "serviceinfo" },                         new int[] {  R.ID.image ,R.ID.items, R.ID.item_subTitle });        setlistadapter(adapter);        final ListVIEw lv = getListVIEw();        lv.setTextFilterEnabled(true);          lv.setonItemClickListener(new OnItemClickListener() {            public voID onItemClick(AdapterVIEw<?> parent, VIEw vIEw, int position, long ID) {                              @SuppressWarnings("unchecked")                HashMap<String, String> o = (HashMap<String, String>) lv.getItemAtposition(position);                                   Toast.makeText(Test.this, "ID '" + o.get("ID") + "' was clicked.", Toast.LENGTH_SHORT).show();             }        });    }    public Bitmap getUserPic(String picID) {        String imageURL;        Bitmap bitmap = null;        Log.d("BITMAP", "Loading Picture");        imageURL = "http://mIDsweden.gofreeserve.com/proj/admin/"+picID;        try {            bitmap = BitmapFactory.decodeStream((inputStream)new URL(imageURL).getContent());        } catch (Exception e) {            Log.d("BITMAP", "Loading Picture Failed");            e.printstacktrace();        }        return bitmap;    }}

这是我认为需要发布的Jsonfunction类,只是为了让其他人理解

public class JsONfunctions {    public static JsONObject getJsONfromURL(String url){        inputStream is = null;        String result = "";        JsONObject jArray = null;        //http post        try{                httpClIEnt httpclIEnt = new DefaulthttpClIEnt();                httpPost httppost = new httpPost(url);                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());        }        try{            jArray = new JsONObject(result);                    }catch(JsONException e){                Log.e("log_tag", "Error parsing data "+e.toString());        }        return jArray;    }}

我有两个xml文件,除了这个项目的主要文件之外
test.xml
    
    

<TextVIEw      androID:ID="@+ID/items"    androID:layout_wIDth="fill_parent"     androID:layout_height="wrap_content"     androID:textAppearance="?androID:attr/textAppearanceMedium"    androID:padding="2dp"    androID:textSize="20dp" />    <TextVIEw      androID:ID="@+ID/item_subTitle"    androID:layout_wIDth="fill_parent"     androID:layout_height="wrap_content"     androID:padding="2dp"    androID:textSize="18dp" /></linearLayout>

列表位置持有人

<linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"    androID:orIEntation="vertical"    androID:layout_wIDth="fill_parent"    androID:layout_height="fill_parent">         <ImageVIEw      androID:ID="@+ID/image"      androID:layout_wIDth="50dip"      androID:layout_height="50dip"       androID:scaleType="centerCrop"/>    <ListVIEw        androID:ID="@ID/androID:List"        androID:layout_wIDth="fill_parent"        androID:layout_height="wrap_content"        androID:layout_weight="1"        androID:drawSelectorOntop="false" />    <TextVIEw        androID:ID="@ID/androID:empty"        androID:layout_wIDth="fill_parent"       androID:layout_height="wrap_content"        androID:text="No data"/></linearLayout>

我知道有可用的惰性列表,但是我想为我的理解进行设置.谢谢

解决方法:

正确,我为您提供了另一个示例项目,您可以下载here.它的代码太多,无法发布,因此我将项目压缩后可以下载.如果您不确定如何工作,请询问！请享用.

顺便说一句,它看起来像这样：

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