问题描述
下面是我的代码,该代码在listview中显示数据,该数据是从json解析的.
当用户单击列表中的任何项目时,我都想开始新的活动.
Below is my code which displays data in listview which is parses from json.
I want to start new activity when the user clicks on any item in the list.
我遵循了这个网址 http://www.androidhive. info/2012/01/android-json-parsing-tutorial/,这是json文件 http ://api.androidhive.info/contacts/
I followed this url http://www.androidhive.info/2012/01/android-json-parsing-tutorial/ and this is the json file http://api.androidhive.info/contacts/
当用户单击列表视图中的任何项目并将剩余的json值作为参数传递时,如何启动新活动?
How to start a new activity when a user clicks on any item in listview and pass the remaining json values as parameters?
现在,我的列表视图仅显示姓名,但我想传递其余项目,例如电子邮件,性别和移动到其他活动.
"id": "c200",
"name": "Ravi Tamada",
"email": "[email protected]",
"address": "xx-xx-xxxx,x - street, x - country",
"gender" : "male",
"phone": {
"mobile": "+91 0000000000",
"home": "00 000000",
"office": "00 000000"
public class NewsRowAdapter extends ArrayAdapter<Item> {
private Activity activity;
private List<Item> items;
private Item objBean;
private int row;
Context context;
public NewsRowAdapter(Activity act, int resource, List<Item> arrayList) {
super(act, resource, arrayList);
this.activity = act;
this.row = resource;
this.items = arrayList;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
ViewHolder holder;
if (view == null) {
LayoutInflater inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(row, null);
holder = new ViewHolder();
view.setTag(holder);
} else {
holder = (ViewHolder) view.getTag();
}
if ((items == null) || ((position + 1) > items.size()))
return view;
objBean = items.get(position);
holder.tvName = (TextView) view.findViewById(R.id.txtText);
if (holder.tvName != null && null != objBean.getName()
&& objBean.getName().trim().length() > 0) {
holder.tvName.setText(Html.fromHtml(objBean.getName()));
Intent intent=new Intent(context,TodayLunch.class);
intent.putExtra("name", Html.fromHtml(objBean.getName()));
context.startService(intent);
}
return view;
}
public class ViewHolder {
public TextView tvName, tvCity, tvBDate, tvGender, tvAge;
}
}
package com.schoollunchapp;
public class SeletecDayofweek extends Activity implements OnItemClickListener {
private static final String rssFeed = "http://192.168.2.100/jsonparsing.txt";
private static final String ARRAY_NAME = "student";
private static final String ID = "id";
private static final String NAME = "name";
private static final String CITY = "dish";
private static final String GENDER = "Gender";
private static final String AGE = "age";
private static final String BIRTH_DATE = "birthdate";
ListView listMainMenu;
List<Item> arrayOfList;
//MainMenuAdapter mma;
NewsRowAdapter objAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.selectdayofweek);
listMainMenu = (ListView) findViewById(R.id.listMainMenu2);
listMainMenu.setOnItemClickListener(this);
arrayOfList = new ArrayList<Item>();
if (URLUtils.isNetworkAvailable(SeletecDayofweek.this)) {
new MyTask().execute(rssFeed);
} else {
showToast("No Network Connection!!!");
}
}
// My AsyncTask start...
class MyTask extends AsyncTask<String, Void, String> {
ProgressDialog pDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(SeletecDayofweek.this);
pDialog.setMessage("Loading...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... params) {
return URLUtils.getJSONString(params[0]);
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (null != pDialog && pDialog.isShowing()) {
pDialog.dismiss();
}
if (null == result || result.length() == 0) {
showToast("No data found from web!!!");
SeletecDayofweek.this.finish();
} else {
try {
JSONObject mainJson = new JSONObject(result);
JSONArray jsonArray =
mainJson.getJSONArray(ARRAY_NAME);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject objJson =
jsonArray.getJSONObject(i);
Item objItem = new Item();
objItem.setId(objJson.getInt(ID));
objItem.setName(objJson.getString(NAME));
objItem.setCity(objJson.getString(CITY));
objItem.setGender(objJson.getString(GENDER));
objItem.setAge(objJson.getInt(AGE));
objItem.setBirthdate(objJson.getString(BIRTH_DATE));
arrayOfList.add(objItem);
}
} catch (JSONException e) {
e.printStackTrace();
}
setAdapterToListview();
}
}
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// showDeleteDialog(position);
}
public void setAdapterToListview() {
objAdapter = new NewsRowAdapter(SeletecDayofweek.this,
R.layout.main_menu_item,
arrayOfList);
listMainMenu.setAdapter(objAdapter);
}
public void showToast(String msg) {
Toast.makeText(SeletecDayofweek.this, msg, Toast.LENGTH_LONG).show();
}
}
推荐答案
创建像这样的数组列表
public ArrayList<String> Id = new ArrayList<String>();
public ArrayList<String> Name = new ArrayList<String>();
public ArrayList<String> Gender= new ArrayList<String>();
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject objJson = jsonArray.getJSONObject(i);
// here you can get id,name,city...
Id.add(objJson.getInt("id"));
Name.add(objJson.getString("name"));
Gender.add(objJson.getString("Gender"));
//You need to use this code in the class where you have the view ,
// list item click
List_View.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub
Intent i = new Intent(this, abc.class);
// here arg2 is argument of onitemclick method
// this will pick the same item from array list that is clicked on list view
i.putExtra("key_name" , Id.get(arg2));
i.putExtra("key_name" , Name.get(arg2));
i.putExtra("key_name" , Gender.get(arg2));
startActivity(i);
}
});
也可以看到
http://www.ezzylearning.com/tutorial.aspx?tid=1351248
和
http://www.bogotobogo.com/Android/android6ListViewSpinnerGridViewGallery.php
这篇关于如何启动新的活动表单ListView并为其赋予多个参数的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!