我想创建listview.我得到了
JSON中的值.这里我从json获取值到listview,但是我无法获取onItemclickListener方法.为什么这种情况我不知道,请帮我我的编码如下所示.
谢谢.
<ListView
android:id="@+id/contests_listView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/header"
android:focusable="true">
</ListView>
Activity.java
public class Activites_Activity extends CheerfoolznativeActivity {
private ListView contests_listView;
private ProgressBar pgb;
ActivitiesBean bean;
ArrayList<Object> listActivities;
ListAdapter adapter;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_listview);
setHeader("Activites");
contests_listView = (ListView) findViewById(R.id.contests_listView);
pgb = (ProgressBar) findViewById(R.id.contests_progressBar);
listActivities = new ArrayList<Object>();
new FetchActivitesTask().execute();
}
public class FetchActivitesTask extends AsyncTask<Void,Void,Void> {
int i =0;
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pgb.setVisibility(View.VISIBLE);
}
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
String url = "my json URL";
String strResponse = util.makeWebCall(url);
try {
//my json logic here
}
catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
public void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
pgb.setVisibility(View.GONE);
displayAdapter();
}
}
public void displayAdapter()
{
adapter = new ListAdapter(this,listActivities);
contests_listView.setAdapter(adapter);
contests_listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0,View arg1,int position,long id) {
// Toast.makeText(getApplicationContext(),"Title => "+items.get(position),Toast.LENGTH_SHORT).show();
System.out.println("=========== Click");
bean = (ActivitiesBean) adapter.getItem(position);
Intent in1 = new Intent(Activites_Activity.this,Activity_display.class);
in1.putExtra("ActivityObject",bean);
startActivity(in1);
}
});
}
}
我也用这个
contests_listView.setItemsCanFocus(true);
解决方法
尝试这个 ：
contests_listView.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent,View view,long id) {
String item = contests_listView.getItemAtPosition(position);
Toast.makeText(this,"You selected : " + item,Toast.LENGTH_SHORT).show();
}
});
