AsyncTask から Detail Fragment 内のカスタム Gridview に JSON データを解析する方法は?
私は持ってInteger[] pictureおりString[] menu、String[] price
GridViewには1ImageView と2がありますTextView
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(mContext);
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, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Menu: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
System.out.println(success);
if (success == 1) {
// products found
// Getting Array of Products
menuresto = json.getJSONArray(TAG_MENU);
// looping through All Products
for (int i = 0; i < menuresto.length(); i++) {
JSONObject c = menuresto.getJSONObject(i);
// Storing each json item in variable
String name = c.getString(TAG_NAME);
String price = c.getString(TAG_PRICE);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_NAME, name);
map.put(TAG_PRICE, price);
// adding HashList to ArrayList
menuList.add(map);
}
}
} 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();
runOnUiThread(new Runnable() {
public void run() {
/**
* How to parsed JSON data into GridView
* */
}
});
}
で働くべきGetViewですか？
アダプタの編集
コード完了
public class MyAdapter extends BaseAdapter {
Context mContext;
private ProgressDialog pDialog;
// creating json parser object
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> menuList;
static final String TAG_SUCCESS = "success";
static final String TAG_MENU = "menu";
static final String TAG_MID = "mid";
static final String TAG_NAME = "name";
static final String TAG_PICT = "picture";
static final String TAG_PRICE = "price";
// url to get all menu list
private static String url = "http://10.0.2.2/menu/food/get_all_products.php";
// menu JSONArray
JSONArray menuresto = null;
public Integer[] menupict = { R.drawable.ic_launcher,
R.drawable.ic_launcher, R.drawable.ic_launcher,
R.drawable.ic_launcher, R.drawable.ic_launcher,
R.drawable.ic_launcher, R.drawable.ic_launcher };
private LayoutInflater mInflater;
public MyAdapter(Context c) {
mContext = c;
mInflater = LayoutInflater.from(c);
// array menu
menuList = new ArrayList<HashMap<String, String>>();
// Loading products in Background Thread
new LoadAllProducts().execute();
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return menuList.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return menuList.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
// Building Parameters
// System.out.println("MyAdapter.getView()");
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.gviewfill, parent, false);
holder = new ViewHolder();
/*
* holder.ImgView = new ImageView(mContext);
* holder.ImgView.setScaleType(ImageView.ScaleType.CENTER_CROP);
*
* holder.ImgView = (ImageView) convertView
* .findViewById(R.id.iv_menu_image);
*/
holder.txtName = (TextView) convertView
.findViewById(R.id.tv_menu_name);
holder.price = (TextView) convertView
.findViewById(R.id.tv_menu_price);
if (position == 0) {
convertView.setTag(holder);
}
} else {
holder = (ViewHolder) convertView.getTag();
}
// holder.ImgView.setImageResource(menupict[position]);
holder.price.setText("Rp. " + menuList.get(position).get(TAG_PRICE));
holder.txtName.setText(menuList.get(position).get(TAG_NAME));
return convertView;
}
static class ViewHolder {
ImageView ImgView;
TextView txtName;
TextView price;
}
/**
* 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(mContext);
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, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Menu: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
System.out.println(success);
if (success == 1) {
// products found
// Getting Array of Products
menuresto = json.getJSONArray(TAG_MENU);
// looping through All Products
for (int i = 0; i < menuresto.length(); i++) {
JSONObject c = menuresto.getJSONObject(i);
// Storing each json item in variable
String name = c.getString(TAG_NAME);
String price = c.getString(TAG_PRICE);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_NAME, name);
map.put(TAG_PRICE, price);
// adding HashList to ArrayList
menuList.add(map);
}
}
} 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();
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed JSON data into ListView
* */
}
});
}
}
}