用JSON填充的ListView替换JSON填充的TextView

用JSON填充的ListView替换JSON填充的TextView

首先，您需要在布局xml中使用listview

<ListView android:id="@+id/list" android:layout_width="wrap_content" android:layout_height="wrap_content" />

将列表声明为实例变量

 ArrayList<CommentsLibrary> list = new ArrayList<CommentsLibrary>();

然后

 for (int i = 0; i < jsonArray.length(); i++) { JSonObject jsonObject = jsonArray.getJSonObject(i); String name = jsonObject.optString("name","defaultValue"); String content = jsonObject.optString("content","defaultValue"); String published = jsonObject.optString("published","defaultValue"); list.add(new CommentsLibrary(name, content, published)); }

然后初始化listview

ListView lv =(ListView)findViewById(R.id.list);CustomAdapter cus = new CustomAdapter(ActivityName.this,list);lv.setAdapter(cus);

用3个textview定义一个自定义布局。（list_item.xml）

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_marginLeft="18dp"        android:layout_marginTop="31dp"        android:text="TextView" />    <TextView        android:id="@+id/textView2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignbaseline="@+id/textView1"        android:layout_alignBottom="@+id/textView1"        android:layout_centerHorizontal="true"        android:text="TextView" />    <TextView        android:id="@+id/textView3"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignbaseline="@+id/textView2"        android:layout_alignBottom="@+id/textView2"        android:layout_alignParentRight="true"        android:layout_marginRight="24dp"        android:text="TextView" /></RelativeLayout>

然后，通过扩展基本适配器来定义自定义适配器。覆盖会

getView

膨胀自定义布局并在那里设置文本视图。

public class CustomAdapter extends baseAdapter{    LayoutInfalter mInflater;     ArrayList<CommentsLibrary> list;      public CustomAdapter(Context context,ArrayList<CommentsLibrary> list)    {     mInflater = LayoutInfalter.from(context);     this.list = list;      }     @Overridepublic int getCount() {    // TODO Auto-generated method stub    return list.size();}@Overridepublic Object getItem(int position) {    // TODO Auto-generated method stub    return position;}@Overridepublic long getItemId(int position) {    // TODO Auto-generated method stub    return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {    // TODO Auto-generated method stub    ViewHolder holder;    if(convertView==null)    {        convertView =minflater.inflate(R.layout.list_item, parent,false);        holder = new ViewHolder();        holder.tv1 = (TextView) convertView.findViewById(R.id.textView1);        holder.tv2 = (TextView) convertView.findViewById(R.id.textView2);        holder.tv3 = (TextView) convertView.findViewById(R.id.textView3);         convertView.setTag(holder);    }    else    {        holder= (ViewHolder) convertView.getTag();    }    holder.tv1.setText(list.get(position).getName()); holder.tv2.setText(list.get(position).getContent()); holder.tv3.setText(list.get(position).getPublished());    return convertView;}static class ViewHolder{    TextView tv1,tv2,tv3}}