-3
程序/ APK需要列出所有的標題，但是當我運行它APK關閉請幫助我，我不知道到底發生了什麼如何列出數據庫列表視圖上的所有事件？
package com.eu.agendamarinhagrande;
import android.annotation.TargetApi;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import com.eu.agendamarinhagrande.JSONParser;
import com.eu.agendamarinhagrande.R;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class MainActivity extends ActionBarActivity {
// Progress Dialog
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> empresaList;
// url to get all products list
private static String url_all_empresas = "http://www.grifin.pt/projectoamg/Conexao.php";
// JSON Node names
private static final String TAG_TITULO = "Titulo";
// products JSONArray
String resultado = null;
ListView lista;
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Hashmap para el ListView
empresaList = new ArrayList<HashMap<String, String>>();
LoadAllProducts loadAllProducts = new LoadAllProducts();
// Cargar los productos en el Background Thread
lista = (ListView) findViewById(R.id.agenda);
loadAllProducts.execute(String.valueOf(lista));
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
}//fin onCreate
class LoadAllProducts extends AsyncTask<String, String, String> {
/**
* Antes de empezar el background thread Show Progress Dialog
*/
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("A carregar eventos. Por favor espere...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* obteniendo todos los productos
*/
protected String doInBackground(String... args) {
// Building Parameters
List params = new ArrayList();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_empresas, "GET", params);
StringBuilder sb = new StringBuilder();
// Check your log cat for JSON reponse
Log.d("All Products: ", url_all_empresas.toString());
resultado = sb.toString();
try {
// Checking for SUCCESS TAG
// products found
// Getting Array of Products
JSONArray arrayJson = new JSONArray(resultado);
for (int i = 0; i<arrayJson.length();i++){
// Storing each json item in variable
JSONObject c = arrayJson.getJSONObject(i);
String Titulo = c.getString(TAG_TITULO);
// creating new HashMap
HashMap map = new HashMap();
// adding each child node to HashMap key => value
map.put(TAG_TITULO, Titulo);
empresaList.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
MainActivity.this,
empresaList,
R.layout.single_post,
new String[]{
TAG_TITULO
},
new int[]{
R.id.single_post_tv_id
});
// updating listview
//setListAdapter(adapter);
lista.setAdapter(adapter);
}
});
}
}
}
看看你的logcat看什麼happend。如果你發現一個stracktrace請添加它。 – Jens
發佈您的logcattttttttttttttttttttttttttttttttttttt。 –
你需要修復你的鍵盤，你的「S」，「a」和「d」鍵似乎是失靈... – 2Dee