-1
こんにちは、私はJSONレスポンスのタイプに基づいてレイアウトを膨らませる助けてください 私はこのhttps://github.com/codepath/android_guides/wiki/Heterogenous-Layouts-inside-RecyclerViewJSONレスポンスから異機種レイアウトを作成する方法
でこのチュートリアルhttp://androidcss.com/android/fetch-json-data-android/をマージしようとしています。しかし、私はいくつかの問題
に直面しています、私の JSONレスポンスフォーム[
{ "type":"sports",
"image":"http://example.com/image.jpg",
"name":"Super Commando Dhruva"
},
{
"type":"health",
"image":"http://example.com/image.jp",
"name":"Parmanu"
}
]
MainActivity
package com.androidcss.jsonexample;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
// CONNECTION_TIMEOUT and READ_TIMEOUT are in milliseconds
public static final int CONNECTION_TIMEOUT = 10000;
public static final int READ_TIMEOUT = 15000;
private RecyclerView mRVFishPrice;
private AdapterFish mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Make call to AsyncTask
new AsyncLogin().execute();
}
private class AsyncLogin extends AsyncTask<String, String, String> {
ProgressDialog pdLoading = new ProgressDialog(MainActivity.this);
HttpURLConnection conn;
URL url = null;
@Override
protected void onPreExecute() {
super.onPreExecute();
//this method will be running on UI thread
pdLoading.setMessage("\tLoading...");
pdLoading.setCancelable(false);
pdLoading.show();
}
@Override
protected String doInBackground(String... params) {
try {
// Enter URL address where your json file resides
// Even you can make call to php file which returns json data
url = new URL("http://example.com/response.json");
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return e.toString();
}
try {
// Setup HttpURLConnection class to send and receive data from php and mysql
conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(READ_TIMEOUT);
conn.setConnectTimeout(CONNECTION_TIMEOUT);
conn.setRequestMethod("GET");
// setDoOutput to true as we recieve data from json file
conn.setDoOutput(true);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
return e1.toString();
}
try {
int response_code = conn.getResponseCode();
// Check if successful connection made
if (response_code == HttpURLConnection.HTTP_OK) {
// Read data sent from server
InputStream input = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(input));
StringBuilder result = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
result.append(line);
}
// Pass data to onPostExecute method
return (result.toString());
} else {
return ("unsuccessful");
}
} catch (IOException e) {
e.printStackTrace();
return e.toString();
} finally {
conn.disconnect();
}
}
@Override
protected void onPostExecute(String result) {
//this method will be running on UI thread
pdLoading.dismiss();
List<DataFeed> data=new ArrayList<>();
pdLoading.dismiss();
try {
JSONArray jArray = new JSONArray(result);
// Extract data from json and store into ArrayList as class objects
for(int i=0;i<jArray.length();i++){
JSONObject json_data = jArray.getJSONObject(i);
DataFeed fishData = new DataFeed();
fishData.fishImage= json_data.getString("image");
fishData.fishName= json_data.getString("type");
fishData.catName= json_data.getString("name");
// fishData.sizeName= json_data.getString("size_name");
//fishData.price= json_data.getInt("price");
data.add(fishData);
}
// Setup and Handover data to recyclerview
mRVFishPrice = (RecyclerView)findViewById(R.id.fishPriceList);
mAdapter = new AdapterFish(MainActivity.this, data);
mRVFishPrice.setAdapter(mAdapter);
mRVFishPrice.setLayoutManager(new LinearLayoutManager(MainActivity.this));
} catch (JSONException e) {
Toast.makeText(MainActivity.this, e.toString(), Toast.LENGTH_LONG).show();
}
}
}
}
マイアダプタ
package com.androidcss.jsonexample;
import android.content.Context;
import android.support.v4.content.ContextCompat;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.squareup.picasso.Picasso;
import java.util.Collections;
import java.util.List;
public class AdapterFish extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context context;
private LayoutInflater inflater;
List<DataFeed> data= Collections.emptyList();
DataFeed current;
int currentPos=0;
private final int USER = 0, IMAGE = 1;
// create constructor to innitilize context and data sent from MainActivity
public AdapterFish(Context context, List<DataFeed> data){
this.context=context;
inflater= LayoutInflater.from(context);
this.data=data;
}
// return total item from List
@Override
public int getItemCount() {
return data.size();
}
@Override
public int getItemViewType(int position) {
DataFeed current=data.get(position);
if (data.get(position) instanceof DataFeed) {
return USER;
} else if (data.get(position) instanceof String) {
return IMAGE;
}
return -1;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
RecyclerView.ViewHolder viewHolder;
LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
switch (viewType) {
case USER:
View v1 = inflater.inflate(R.layout.layout_viewholder1, viewGroup, false);
viewHolder = new ViewHolder1(v1);
break;
case IMAGE:
View v2 = inflater.inflate(R.layout.layout_viewholder2, viewGroup, false);
viewHolder = new ViewHolder2(v2);
break;
default:
View v = inflater.inflate(R.layout.container_fish, viewGroup, false);
viewHolder = new MyHolder(v);
break;
}
return viewHolder;
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
switch (viewHolder.getItemViewType()) {
case USER:
ViewHolder1 vh1 = (ViewHolder1) viewHolder;
configureViewHolder1(vh1, position);
break;
case IMAGE:
ViewHolder2 vh2 = (ViewHolder2) viewHolder;
configureViewHolder2 (vh2, position, int);
break;
//default:
// RecyclerViewSimpleTextViewHolder vh = (RecyclerViewSimpleTextViewHolder) viewHolder;
// configureDefaultViewHolder(vh, position);
// break;
}
}
//private void configureDefaultViewHolder(RecyclerViewSimpleTextViewHolder vh, int position) {
// vh.getLabel().setText((CharSequence) items.get(position));
//}
private void configureViewHolder1(ViewHolder1 vh1, int position) {
DataFeed current = data.get(position);
if (current != null) {
vh1.getLabel1().setText("Name: " + current.fishName);
//vh1.getLabel2().setText("Hometown: " + current.hometown);
}
}
private void configureViewHolder2(ViewHolder2 vh2) {
vh2.getImageView().setImageResource(R.drawable.robbie);
}
class MyHolder extends RecyclerView.ViewHolder{
TextView textFishName;
ImageView ivFish;
TextView textSize;
TextView textType;
TextView textPrice;
// create constructor to get widget reference
public MyHolder(View itemView) {
super(itemView);
textFishName= (TextView) itemView.findViewById(R.id.textFishName);
ivFish= (ImageView) itemView.findViewById(R.id.banner);
}
}
}