MainActivity.java
JSONObject dataObject = resp.getJSONObject("data");
JSONArray arrJson= dataObject.getJSONArray("feed");
String[] arr=new String[arrJson.length()];
for(int i=0;i<arrJson.length();i++) {
arr[i] = arrJson.getString(i);
Log.d("asdata2",arr[i].toString());
}
//first obj
JSONObject jobj=new JSONObject(arr[0]);
Log.i("TAG2", "id: " +jobj.getString("id"));
Log.i("TAG2", "businessName: " + jobj.getString("businessName"));
Log.i("TAG2", "businessLogoUrl: " + jobj.getString("businessLogoUrl"));
Log.i("TAG2", "text: " + jobj.getString("text"));
Log.i("TAG2", "photoUrl: " + jobj.getString("photoUrl"));
Log.i("TAG2", "videoUrl: " + jobj.getString("videoUrl"));
Log.i("TAG2", "isNew: " + jobj.getString("isNew"));
Log.i("TAG2", "type: " + jobj.getString("type"));
Log.d("jobjj",jobj.toString());
PromotionsFeedActivity.Titles.add(jobj.getString("businessName"));
PromotionsFeedActivity.Pictures.add(jobj.getString("photoUrl"));
PromotionsFeedActivity.Categorie.add(jobj.getString("type"));
PromotionsFeedActivity.videoURL.add(jobj.getString("videoUrl"));
PromotionsFeedActivity.Id.add(jobj.getString("id"));
//PromotionsFeedActivity.BuyUrl.add("null");
PromotionsFeedActivity.PartnerId.add("null");
context.startActivity(new Intent(context,PromotionsFeedActivity.class));
PromotionFeedAdapter.java
public int layout;
Button getCal;
WebView display;
public static String MY_PREFS_NAME="my_prefs";
private static final String TAG = PlatformHttp.class.getSimpleName();
Context mContext;
public PromotionFeedAdapter(Context context, int resource, List<String> objects) {
super(context, resource, objects);
layout=resource;
}
@Override
public View getView(final int position, View convertView, final ViewGroup parent){
ViewHolder2 mainViewHolder=null;
mContext = parent.getContext();
LayoutInflater inflater=LayoutInflater.from(getContext());
convertView= inflater.inflate(layout,parent,false );
final ViewHolder2 viewHolder=new ViewHolder2();
// Layout Folder For Promotion
viewHolder.title=(TextView)convertView.findViewById(R.id.pf_title);
viewHolder.picture=(ImageView)convertView.findViewById(R.id.pf_main_pic);
viewHolder.category=(TextView)convertView.findViewById(R.id.pf_category);
//viewHolder.=(TextView)convertView.findViewById(R.id.pf_type);
// Navigationb listner onClick Promotion
viewHolder.title.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getContext().startActivity(new Intent(getContext(),Webview.class));
}
});
// Picking the layout based on the partnerId
Log.i("Position",String.valueOf(position));
switch (PromotionsFeedActivity.PartnerId.get(position)){
case "5":layout=R.layout.livefeed_adapter;
break;
case "3":layout=R.layout.livefeed_adapter_groupon;
break;
case "0":layout=R.layout.livefeed_adapter_news;
break;
}
convertView.setTag(viewHolder);
mainViewHolder=(ViewHolder2)convertView.getTag();
mainViewHolder.title.setText(getItem(position));
// mainViewHolder.title2.setText(getItem(position));
// mainViewHolder.pf_type.setText(getItem(position));
String title2,picUrl,category,type;
title2=PromotionsFeedActivity.Title2.get(position);
picUrl=PromotionsFeedActivity.Pictures.get(position);
category=PromotionsFeedActivity.Categorie.get(position);
mainViewHolder.category.setText(category);
convertView.setTag(viewHolder);
URL newurl = null;
try {
newurl = new URL(picUrl);
Picasso.with(getContext()).load(picUrl).into(viewHolder.picture);
} catch (MalformedURLException e) {
e.printStackTrace();
}
return convertView;
}
public class ViewHolder2 {
TextView title;
TextView title2;
ImageView picture;
TextView category;
}
PromotionFeedActivity.java
public static ArrayList<String> Id=new ArrayList<String> ();
public static ArrayList<String> Titles = new ArrayList<String>();
public static ArrayList<String> Title2 = new ArrayList<String>();
public static ArrayList<String> Categorie = new ArrayList<String>();
public static ArrayList<String> videoURL=new ArrayList<String> ();
public static ArrayList<String> Pictures=new ArrayList <String> ();
public static ArrayList<String> PartnerId=new ArrayList<String>();
public static ArrayAdapter<String> pfAdapter;
ListView show;
VideoView videoView;
ImageView btnWatchVideo;
private TextView mTextMessage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_promotions_feed);
btnWatchVideo = (ImageView) findViewById(R.id.btnWatchVideo);
btnWatchVideo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(PromotionsFeedActivity.this,MediaActivity.class));
}
});
mTextMessage = (TextView) findViewById(R.id.message);
BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
Log.i("PartnerSize",String.valueOf(PartnerId.size()));
show= (ListView) findViewById(R.id.lv_pf);
pfAdapter = new PromotionFeedAdapter(PromotionsFeedActivity.this, R.layout.livefeed_adapter, Title2);
pfAdapter = new PromotionFeedAdapter(PromotionsFeedActivity.this,R.layout.livefeed_adapter,Titles);
showData(pfAdapter);
public void showData(ArrayAdapter<String> adapter){
adapter.notifyDataSetChanged();
show.setAdapter(adapter);
}
activity_promotionfeed.xml
<ListView
android:layout_marginTop="80dp"
android:layout_width="match_parent"
android:layout_height="435dp"
android:id="@+id/lv_pf">
</ListView>
activity_livefeed.xml
<LinearLayout
android:layout_width="380dp"
android:layout_height="50dp"
android:layout_marginLeft="2dp"
android:src="@drawable/img_frame_1"
android:orientation="horizontal"
android:background="@drawable/boarder">
<ImageView
android:layout_width="40dp"
android:layout_height="40dp"
android:src="@drawable/special_icon"
android:layout_marginTop="5dp"
android:layout_marginLeft="5dp" />
<TextView
android:id="@+id/pf_title"
android:layout_width="330dp"
android:layout_height="wrap_content"
android:text="$80 Toward Gourmet Stackhouse"
android:layout_marginTop="16dp"
android:textStyle="bold"
android:textSize="16sp" />
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="200dp">
<ImageView
android:id="@+id/pf_main_pic"
android:layout_width="370dp"
android:layout_height="220dp"
android:src="@color/colorPrimaryDark"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<ImageView
android:layout_width="65dp"
android:layout_height="65dp"
android:src="@drawable/special_tag"
android:layout_alignRight="@+id/pf_main_pic"
android:layout_alignEnd="@+id/pf_main_pic" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp">
<TextView
android:id="@+id/pf_category"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Artistic Expert Picture Framing"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:textStyle="bold" />
<TextView
android:id="@+id/pf_type"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Retail"
android:textStyle="normal"
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"/>
</RelativeLayout>
我想在列表视图中设置适配器上的数据。但是当我运行应用程序时数据没有显示。任何人都可以帮助我。每件事看起来都很好。但是当我运行应用程序时它没有显示在列表视图。
答案 0 :(得分：0)
1。而不是使用static中的PromotionsFeedActivity列表，在ArrayList中声明MainActivity。
2。获取JOSN回复并将string添加到ArrayList。
3。最后使用Intent将ArrayList传递给PromotionsFeedActivity。
4。在PromotionsFeedActivity中，从ArrayList获取Intent并将其传递给Adapter以填充ListView上的数据。
更新您的MainActivity和PromotionsFeedActivity，如下所示：
<强> MainActivity：
ArrayList<String> Titles = new ArrayList<String>();
..........
....................
// Get response and store it into list
Titles.add(jobj.getString("businessName"));
// Send Titles to PromotionsFeedActivity
Intent intent = new Intent(MainActivity.this, PromotionsFeedActivity.class);
intent.putStringArrayListExtra("LIST", Titles);
startActivity(intent);
<强> PromotionsFeedActivity：
public ArrayList<String> Titles;
public static ArrayAdapter<String> pfAdapter;
ListView show;
........
...............
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_promotions_feed);
show = (ListView) findViewById(R.id.lv_pf);
// Get Titles from Intent send from MainActivity
Titles = getIntent().getStringArrayListExtra("LIST");
// Adapter
pfAdapter = new PromotionFeedAdapter(PromotionsFeedActivity.this, R.layout.livefeed_adapter, Titles);
// Set adapter
show.setAdapter(adapter);
}