I've an activity which output json data from as a list. But now I want to implement it in a fragment. In this fragment I want to view it as gridview. And both files works fine. but when I tried to implement AsyncTask I gets several redflags as unreachable code. Can someone help me with this please?
Edited: New
public class SalesFragment extends Fragment {
GridView gridView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View gv = inflater.inflate(R.layout.hot_sales, null);
gridView = (GridView) gv.findViewById(R.id.grid_view);
bindGridview();
return gv;
}
public void bindGridview() {
new MyAsyncTask(getActivity(),gridView).execute("");
}
class MyAsyncTask extends AsyncTask<String, String, String> {
GridView mGridView;
Activity mContext;
Response response;
public MyAsyncTask(Activity context,GridView gview) {
this.mGridView=gview;
this.mContext=context;
}
protected String doInBackground(String... params) {
File file = new File( Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/sample.txt");
if(file.exists()) {
try{
Reader inputStreamReader = new InputStreamReader(new FileInputStream(file));
Gson gson = new Gson();
this.response = gson.fromJson(inputStreamReader, Response.class);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (@SuppressWarnings("hiding") IOException e){
e.printStackTrace();
}
}else{
System.out.println("Error");
}
return null;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
//List<HashMap<String,String>> aList = new ArrayList<HashMap<String,String>>();
for(Sales sales : this.response.sales){
HashMap<String, String> hm = new HashMap<String,String>();
if (sales.getCategories1().contains("12")){
//hm.put("sale_title", "" + sales.getShort_title());
for(Shop shop : this.response.shops){
String image_file = new String( Environment.getExternalStorageDirectory().getAbsolutePath()
+ "/images/" + shop.getImage());
if(shop.getId().equals(sales.getShop_id())){
hm.put("shop_image", image_file );
System.out.println(shop_image);
}
}
if(hm.size()>0){
gridView.setAdapter(new ImageAdapter(MainActivity.this,R.layout.grid_layout , imgArray, titleArray));
}
}
}
}
}
}
How to call images into gridview on above image? Please help.
There is easy step to crate asyntask within fragment
in your fragment place code on activityCreateview
new MyAsyncTask(getActivity(), mListView).execute("");
getActivity()
is method to communicate with fragment and activity
in asynstak on post
context.mListView.setArrayAdapter(...........)
here is
public class SalesFragment extends Fragment {
GridView gridView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View gv = inflater.inflate(R.layout.hot_sales, null);
gridView = (GridView) gv.findViewById(R.id.grid_view);
bindGridView()
return gv;
//return super.onCreateView(inflater, container, savedInstanceState);
}
public void bindGridview()
{
new MyAsyncTask(getActivity(), gridView).execute("");
}
class MyAsyncTask extends AsyncTask<String, String, String>
{
GridView mGridView;
Activity mContex;
public MyAsyncTask(Activity contex,GridView gview)
{
this.mGridView=gview;
this.mContex=contex;
}
protected String doInBackground(String... params)
{
//fetch data
}
@Override
protected void onPostExecute(String result) {
{
for(Sales sales : this.response.sales){
HashMap<String, String> hm = new HashMap<String,String>();
if (sales.getCategories1().contains("12")){
//hm.put("sale_title", "" + sales.getShort_title());
for(Shop shop : this.response.shops){
String image_file = new String( Environment.getExternalStorageDirectory().getAbsolutePath()
+ "/images/" + shop.getImage());
if(shop.getId().equals(sales.getShop_id())){
hm.put("shop_image", image_file );
System.out.println(shop_image);
}
}
}
}
if(hm.size()>0)
mcontext.mGridView.setAdapter(new ImageAdapter(mContext),hm);
}
before fetching data make it model like
public class ImageModel
{
String title;
String img;
}
ArrayList<ImageModel> arrayList=new ArrayList<ImageModel>();
fill array list with required data then
mcontext.mGridView.setAdapter(new ImageAdapter(mContext),hm,arrayList);
//in image adapter
public class ImageAdapter extends ArrayAdapter<String> {
public ImageAdapter(Context context, HashMap<String, String> hm,ArrayList<ImageModel> images )
{
super(context, R.layout.activity_t);
}
//--code
}
use hash map in adapter and assign images with position set data and fetch value from model
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With