android中树形json解析为对象,并通过dialog显示,多级列表

{"id":"0","text":"信件简历夹","type":"root","data":"0","state":{"selected":true,"opened":true},"children":[{"id":"525B0D60762311E58D60F73FF458773A","text":"New node","data":"525B0D60762311E58D60F73FF458773A","pid":"0","state":{"selected":false,"opened":true},"children":[{"id":"525BD0B0762311E590B0C6DB849AE720","text":"New node","data":"525BD0B0762311E590B0C6DB849AE720","pid":"525B0D60762311E58D60F73FF458773A","state":{"selected":false,"opened":true},"type":"default"},{"id":"5272B410762311E5B4108E983A64A6A9","text":"New node1","data":"5272B410762311E5B4108E983A64A6A9","pid":"525B0D60762311E58D60F73FF458773A","state":{"selected":false,"opened":true},"children":[{"id":"5272DB20762311E59B20C18DB31F394D","text":"New node","data":"5272DB20762311E59B20C18DB31F394D","pid":"5272B410762311E5B4108E983A64A6A9","state":{"selected":false,"opened":true},"children":[{"id":"52735050762311E590508BDCE6B97C58","text":"New node3","data":"52735050762311E590508BDCE6B97C58","pid":"5272DB20762311E59B20C18DB31F394D","state":{"selected":false,"opened":true},"type":"default"}]},{"id":"52732940762311E5A9409FDA0F0C912E","text":"New node2","data":"52732940762311E5A9409FDA0F0C912E","pid":"5272B410762311E5B4108E983A64A6A9","state":{"selected":false,"opened":true},"type":"default"}]}]}]}

上边是从服务器获取到的json数据,是树形,并且服务器端要求json树不是固定的
做的是个菜单,比如(美食–火锅–王婆大虾)(旅游–龙门石窟)
也就是说下边的项不是固定的,可能2项,也可能3,4项
(部分示例)

{    "id": "0",    "text": "信件简历夹",    "type": "root",    "data": "0",    "state": {        "selected": true,        "opened": true    },    "children": [        {            "id": "525B0D60762311E58D60F73FF458773A",            "text": "New node",            "data": "525B0D60762311E58D60F73FF458773A",            "pid": "0",            "state": {                "selected": false,                "opened": true            },            "children": [.........................

这是 JsonBean.java

public class JsonBean  implements Serializable{  @TreeNodeId private String id;@TreeNodeLabel private String text;public String type;//判断节点的,是否跟节点或者是否有下一节点@TreeNodePid private String pid;public String data;// public JSONObject state;public JsonBean[] children;public JsonBean(String id,String pid,String text){ super();this.id = id; this.pid = pid;this.text = text; }}

下边是在Activity中的解析

//Stre为json字符串,得到data树 public void jsonDo(String Stre) {JSONObject json; try {    json = new JSONObject(Stre);          //json数据有一个type,当他的值不是default,则ta有children    if (!"default".equals(json.getString("type"))) {// 这个时候才有children        Gson gson = new Gson(); List<JsonBean> lists = gson.fromJson(json.getString("children"),new TypeToken<List<JsonBean>>() {        }.getType()); System.out.println(lists.size());        arr.clear(); getDataFromListBean(lists);        System.out.println("给之前  "+arr.size());  // 其中,state还需要用json解析        Intent intent=new Intent(context,ExpandDialog.class);        Bundle bundle=new Bundle(); bundle.putSerializable("list",arr);        intent.putExtras(bundle); context.startActivity(intent);    }} catch (JSONException e) { e.printStackTrace();} }  ArrayList<JsonBean> arr = new ArrayList<JsonBean>();ArrayList<JsonBean> arr1; private void getDataFromListBean(List<JsonBean> lists) {    for (JsonBean jsonBean : lists) {           //将遍历到的jsonBean保存到list中        arr.add(jsonBean); if (!"default".equals(jsonBean.type)) {            arr1 = new ArrayList<JsonBean>(); JsonBean[] jsonArr = jsonBean.children;            for (int i = 0; i < jsonArr.length; i++) {  arr1.add(jsonArr[i]); }//递归            getDataFromListBean(arr1); }    }     }代码排版问题,看着不是很舒服,大家可以拷到软件里边看

上面是将获取到的json数据,转化为6个jsonBean对象,然后将list传给dialog(我继承的是activity,用的是官方的dialog样式)

还有就是用intent传list集合

由于菜单列是不固定的,所以用不了expandableListview

**http://blog.csdn.net/lmj623565791/article/details/40212367**借用大牛的无限树,具体dialog用法就请大家参考大牛写的

public class ExpandDialog extends BaseActivity
{
private List mylist = new ArrayList();
private ListView mTree;
private TreeListViewAdapter mAdapter;
private String pageClick=”0”;
private String selectUrl=”“;
private Bundle b;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.expand_dialog);
b = getIntent().getExtras();
mTree = (ListView) findViewById(R.id.id_tree);
mylist=(List) b.getSerializable(“datalist”);
if(mylist==null){
initDate();
}
try
{
mAdapter = new SimpleTreeAdapter(mTree, this, mylist, 10);
mAdapter.setOnTreeNodeClickListener(new OnTreeNodeClickListener()
{
@Override
public void onClick(Node node, int position)
{
if (node.isLeaf())
{

                    Toast.makeText(getApplicationContext(), node.getText(),Toast.LENGTH_SHORT).show();                    String id=node.getId();                    String pid=node.getPid();                    String text=node.getText();                    JsonBean bean=new JsonBean(id, pid, text);                    Intent data = getIntent();                    Bundle b = new Bundle();                    b.putSerializable("bean",bean);                    data.putExtras(b);                    setResult(88, data);                    finish();                           }            }        });    } catch (Exception e)    {        e.printStackTrace();    }    mylist.clear();    mTree.setAdapter(mAdapter);}

“`
因为是在项目中,也没时间把它摘出来,多多包涵