我的问题是我无法在我的活动页面中查看我的数据，但我可以在log cat中看到它
11-01 03：14：25.295：D /所有产品：（11015）：{＆＃34;成功＆＃34;：1，＆＃34; scb＆＃34;：[{＆＃34; id＆＃ 34;：＆＃34; 14＆＃34;＆＃34;标题＆＃34;：＆＃34; TEST1＆＃34;}，{＆＃34; ID＆＃34;：＆＃34; 15＆＃34 ;, ＆＃34;标题＆＃34;：＆＃34;标题＆＃34;}，{＆＃34; ID＆＃34;：＆＃34; 16＆＃34;＆＃34;标题＆＃34;：＆＃34 ;标题＆＃34;}，{＆＃34; ID＆＃34;：＆＃34; 17＆＃34;＆＃34;标题＆＃34;：＆＃34;我们＆＃34;}，
我的php文件很好我知道因为我测试它们。
package com.example.studentcookbook;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
//import com.example.androidhive.AllProductsActivity;
//import com.example.androidhive.EditProductActivity;
//import com.example.androidhive.NewProductActivity;
//import com.example.androidhive.R;
//import com.example.androidhive.AllProductsActivity.LoadAllProducts;
import android.app.Activity;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
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 android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class GetAllRecipesActivity extends ListActivity {
// Progress Dialog
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> productsList;
// url to get all products list
private static String url_all_products = "http://studentcookbook.comoj.com/android_connect/get_all_products.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCTS = "products";
private static final String TAG_SCB_ID = "id";
private static final String TAG_TITLE = "title";
// products JSONArray
JSONArray products = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_get_all_recipes);
// Hashmap for ListView
productsList = new ArrayList<HashMap<String, String>>();
// Loading products in Background Thread
new LoadAllProducts().execute();
// Get listview
ListView lv = getListView();
// on seleting single product
// launching Edit Product Screen
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String pid = ((TextView) view.findViewById(R.id.GetAllscbid)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(),EditRecipeActivity.class);
// sending pid to next activity
in.putExtra(TAG_SCB_ID, pid);
// starting new activity and expecting some response back
startActivityForResult(in, 100);
}
});
}//end onCreate method
// Response from Edit Product Activity
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if result code 100
if (resultCode == 100) {
// if result code 100 is received
// means user edited/deleted product
// reload this screen again
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadAllProducts extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(GetAllRecipesActivity.this);
pDialog.setMessage("Loading products. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Products: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// products found
// Getting Array of Products
products = json.getJSONArray(TAG_PRODUCTS);
// looping through All Products
for (int i = 0; i < products.length(); i++) {
JSONObject c = products.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_SCB_ID);
String name = c.getString(TAG_TITLE);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_SCB_ID, id);
map.put(TAG_TITLE, name);
// adding HashList to ArrayList
productsList.add(map);
}
} else {
// no products found
// Launch Add New product Activity
Intent i = new Intent(getApplicationContext(),AddRecipeActivity.class);
// Closing all previous activities
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
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(GetAllRecipesActivity.this, productsList,
R.layout.list_recipe, new String[] { TAG_SCB_ID,TAG_TITLE},
new int[] { R.id.GetAllscbid, R.id.GetAllTitle });
// updating listview
Toast.makeText(GetAllRecipesActivity.this, "onPostExecute", Toast.LENGTH_SHORT).show();
setListAdapter(adapter);
}
});
}
}
}//end GetAllRecipesActivity class
这两个是我的xml文件 的 list_recipe.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/GetAllscbid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone" />
<TextView
android:id="@+id/GetAllTitle"
android:layout_width="269dp"
android:layout_height="34dp" />
另一个 activity_get_all_recipes.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
答案 0 :(得分：1)
看起来你正在处理与食谱有关的事情。
我认为您应该将表名更改为您自己的数据库表名：
private static final String TAG_PRODUCTS = "products";