Android - listView not showing - android

I try to make a list view with content from realm, but problem is that nothing shows when I open activity in emulator, just white screen.
Code is
public class ListActivity extends AppCompatActivity {
ListView list;
Realm realm;
Button button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_of_items);
realm = Realm.getDefaultInstance();
RealmResults<ArticleList> results = realm.where(ArticleList.class).equalTo("category", "Танковые сражения").findAll();
ListActivityListAdapter adapter = new ListActivityListAdapter(this, results);
list = (ListView) findViewById(R.id.listactivity_listview);
list.setAdapter(adapter);
button = (Button) findViewById(R.id.button);
}
}
public class ListActivityListAdapter extends ArrayAdapter<String> {
private final Activity context;
private final RealmResults<ArticleList> articleList;
public ListActivityListAdapter(Activity context, RealmResults<ArticleList> articleList) {
super(context, R.layout.listview_listactivity_item);
this.context = context;
this.articleList = articleList;
}
public View getView(int position,View view,ViewGroup parent) {
LayoutInflater inflater=context.getLayoutInflater();
View rowView=inflater.inflate(R.layout.listview_listactivity_item, null, true);
TextView title = (TextView) rowView.findViewById(R.id.listview_item_title);
TextView subtitle = (TextView) rowView.findViewById(R.id.listview_item_subtitle);
ImageView image = (ImageView) rowView.findViewById(R.id.listview_item_imageView);
ArticleList item = articleList.get(position);
title.setText(item.getTitle());
subtitle.setText(item.getSubtitle());
String imageName = item.getImage();
File imageFile = ImageStorage.getImage(imageName, getContext());
Bitmap bitmap = null;
try {
bitmap = BitmapFactory.decodeFile(context.getFilesDir() + "/tanks/" + imageName + ".jpg");
} catch (Exception e) {
e.printStackTrace();
}
image.setImageBitmap(bitmap);
return rowView;
}
}
activity_list_of_items.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.me.demo2.ListActivity"
tools:showIn="#layout/listview_main_list">
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listactivity_listview"
android:layout_gravity="center_horizontal|top"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Button"
android:id="#+id/button"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="164dp" />
listview_listactivity_item.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="213dp"
android:id="#+id/listview_item_imageView"
android:layout_gravity="center_horizontal|top" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="#+id/listview_item_title"
android:paddingTop="100dp"
android:layout_gravity="center_horizontal|top" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="#+id/listview_item_subtitle"
android:paddingTop="150dp"
android:layout_gravity="center_horizontal|top" />
What did I do wrong ?

I think you're missing the getCount() method in your ArrayAdapter. Also, dont forget about #Override annotation for all the method you're overriding.

Try adapter.notifyDataChanged() after list.setAdapter(adapter);

Related

ListView is giving me a blank page

Im trying to get ListView to display a list of accounts but its returning a blank page. Im not getting any error messages either. I have looked around for similar issues but none of the solution is a fix to this problem. Grateful if someone could help.
FILE > ListActivity.java
public class ListeActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_liste);
Guichet guichet = new Guichet();
ArrayList<Epargne> epargneList = new ArrayList<Epargne>(guichet.listEpargne);
EpargneAdapter adapter = new EpargneAdapter(ListeActivity.this, R.layout.liste_comptes, epargneList);
final ListView list = (ListView) findViewById(R.id.maListe);
list.setAdapter(adapter);
}
}
FILE > EpargneAdapter.java
private ArrayList<Epargne> epargneList;
private Context context;
private int viewRes;
private Resources res;
public EpargneAdapter(Context context, int textViewResourceId, ArrayList<Epargne> versions) {
super(context, textViewResourceId, versions);
this.epargneList = versions;
this.context = context;
this.viewRes = textViewResourceId;
this.res = context.getResources();
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.
LAYOUT_INFLATER_SERVICE);
view = layoutInflater.inflate(viewRes, parent, false);
}
final Epargne epargne = epargneList.get(position);
if (epargne != null) {
final TextView numero = (TextView) view.findViewById(R.id.numeroCompte);
final TextView solde = (TextView)view.findViewById(R.id.soldeCompte);
String numeroC = res.getString(R.string.numero) + " " + epargne.getNumeroCompte();
numero.setText(numeroC);
String SoldeC =res.getString(R.string.solde) + " " + epargne.getSoldeCompte();
solde.setText(SoldeC);
}
return view;
}
}
FILE > activity_liste.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ListeActivity">
<ListView
android:id="#+id/maListe"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="6dp"
/>
</LinearLayout>
FILE > liste_Compte.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="6dp">
<ImageView android:id="#+id/icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="6dp"
android:src="#mipmap/ic_launcher" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView android:id="#+id/numeroCompte"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical" />
<TextView
android:id="#+id/soldeCompte"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
FILE > Guichet.java
public class Guichet extends AppCompatActivity {
ArrayList<Epargne> listEpargne = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_principal);
setTitle("Guichet automatique ATM");
initListEpargne(listEpargne);
}
public void initListEpargne(ArrayList<Epargne> listEpargne) {
Epargne epargne1 = new Epargne();
epargne1.setNumeroCompte("E0001");
epargne1.setSoldeCompte(10000);
listEpargne.add(epargne1);
Epargne epargne2 = new Epargne();
epargne2.setNumeroCompte("E0002");
epargne2.setSoldeCompte(10000);
listEpargne.add(epargne2);
Epargne epargne3 = new Epargne();
epargne3.setNumeroCompte("E0003");
epargne3.setSoldeCompte(10000);
listEpargne.add(epargne3);
Epargne epargne4 = new Epargne();
epargne4.setNumeroCompte("E0004");
epargne4.setSoldeCompte(10000);
listEpargne.add(epargne4);
}
}
Thanks a lot!
You are not initializing the listEpargne when you call it.
But lets forget it. You create a class that extends the AppCompatActivity and try to create that class with new keyword :o.
The classes which extend from the AppCompatActivity should create only by intent and than to start.
You can make a class called Guichet who don't extends the AppCompatActivity and there provide a method getData(). This method will return that list. But don't forgot to initialize and fill that list :).

Changing the background of list items by click on a separate button

I have a listView with some items now I want to change the background color or item text color by click on a separate button which IS NOT on the list . How can I do that in my android app?
This is my main activity:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
arrayAdapter = new SubArrayAdapter(this, dataItemList);
ListView lv = findViewById(R.id.mylist);
lv.setAdapter(arrayAdapter);
ImageButton btn_check = findViewById(R.id.button_checkout);
btn_check.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// how can I access the list items within this click-handler method
});
List Item Layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/listitems"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="5dp">
<ImageView
android:id="#+id/yes_image"
android:layout_width="30dp"
android:layout_height="30dp"
android:paddingRight="5dp"
android:visibility="invisible"
/>
<ImageView
android:id="#+id/no_image"
android:layout_width="30dp"
android:layout_height="30dp"
android:paddingRight="5dp"
android:visibility="invisible"
/>
<TextView
android:id="#+id/paragraph_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#id/yes_image"
android:layout_toRightOf="#id/yes_image"
android:textColor="#color/paragraph_items_colro"
android:textSize="16sp"
android:textStyle="normal" />
</RelativeLayout>
Activity_main xml layout file:
android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textAlignment="center"
android:textDirection="ltr"
tools:context=".MainActivity">
<ListView
android:id="#+id/mylist"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:background="#android:color/transparent"
android:divider="#color/colorAccent"
android:dividerHeight="1dp"
android:listSelector="#0f0"
app:layout_constraintStart_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
</ListView>
<LinearLayout
android:id="#+id/btn_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:orientation="horizontal"
app:layout_constraintTop_toBottomOf="#id/mylist">
<ImageButton
android:id="#+id/button_checkout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:background="#drawable/checkout_9"
android:src="#drawable/checkout_9"
app:layout_constraintTop_toBottomOf="#id/mylist"
tools:layout_editor_absoluteX="106dp" />
</LinearLayout>
</android.support.constraint.ConstraintLayout>
And I have myown adapter class that in the getview() method I populated the list items
this inner class is located in mainactivity:
private class SubArrayAdapter extends ArrayAdapter<DataItem> {
private List<DataItem> items;
private Context context;
public SubArrayAdapter(#NonNull Context context, #NonNull List<DataItem>
items) {
super(context, R.layout.listitems, items);
this.items = items;
this.context = context;
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull
ViewGroup parent) {
DataItem dataitem1 = items.get(position);
LayoutInflater inflater = (LayoutInflater)
context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.listitems, null);
TextView tv = (TextView)
view.findViewById(R.id.paragraph_description);
tv.setText(dataitem1.getDescription());
tv.setTag(position + 100);
ImageView yes_iv = view.findViewById(R.id.yes_image);
int yes_res = context.getResources().getIdentifier("yes",
"drawable", getPackageName());
yes_iv.setImageResource(yes_res);
yes_iv.setTag(position + 200);
//yes_iv.setVisibility(View.VISIBLE);
ImageView no_iv = view.findViewById(R.id.no_image);
int no_res = context.getResources().getIdentifier("no", "drawable",
getPackageName());
no_iv.setImageResource(no_res);
no_iv.setTag(position + 300);
return view;
}
}
}
I've noticed You have set android:listSelector for ListView in Your activity_main.xml - which was giving You an ability to change item's background on single click.
So I decided to check out how it works in ListView class.
I've looked at source code of ListView and searched for phrase selector. There was the line:
} else if (mAction == STATE_REQUEST_FOCUS) {
final int childIndex = mPosition - mFirstPosition;
final View child = getChildAt(childIndex);
if (child != null) {
child.requestFocus();
}
mAction = -1;
}
final View child = getChildAt(childIndex);
Following these steps - I knew solution for Your question problem. Here it is:
ImageButton imageButton = findViewById(R.id.button_checkout);
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int hardCodedPoositionToSelect = 1;
View childAt = listView.getChildAt(hardCodedPoositionToSelect);
if (childAt != null) {
//change background
childAt.setBackgroundColor(Color.RED);
//change textView color of current view
TextView paragraphDescription = childAt.findViewById(R.id.paragraph_description);
paragraphDescription.setTextColor(Color.MAGENTA);
}
}
});
You can see I am calling getChildAt() on listView to obtain current item's view basing on item's position from hardCodedPoositionToSelect.

Adding a Horizontal Scroll View to a ListView

I currently have an adapter that takes two images and a text view to add to a listView. I want to change this so that I can add a horizontalScrollView inside each list item that contains the images. Would there be any way to do this?
This my current working adapter as described above with two imageView's and a textView
public class MyAdapter extends BaseAdapter {
private Context mContext;
private List<Bean> mList;
private PopupWindow popUpWindow;
private LayoutInflater inflater;
public MyAdapter(Context context,List<Bean> list){
mContext=context;
mList=list;
}
#Override
public int getCount() {
return mList.size();
}
#Override
public Object getItem(int position) {
return mList.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
//use convertView recycle
if(convertView==null){
holder=new ViewHolder();
convertView = LayoutInflater.from(mContext).inflate(R.layout.content_orders, parent, false);
holder.textView= (TextView) convertView.findViewById(R.id.textView2);
holder.imageView= (ImageView) convertView.findViewById(R.id.imageView2);
holder.imageView2 = (ImageView) convertView.findViewById(R.id.imageView3);
holder.information= (Button) convertView.findViewById(R.id.button5);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
//set text and url
final View finalConvertView = convertView;
holder.information.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
ViewGroup container = (ViewGroup) inflater.inflate(R.layout.information_popup, null);
popUpWindow = new PopupWindow(container, 800,400,true);
popUpWindow.showAtLocation(finalConvertView.findViewById(R.id.orders), Gravity.CENTER, 0,0);
container.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View view, MotionEvent motionEvent) {
popUpWindow.dismiss();
return true;
}
});
}
});
holder.textView.setText(mList.get(position).getText());
Picasso.with(mContext).load(mList.get(position).getUrl()).resize(450,450).into(holder.imageView);
Picasso.with(mContext).load(mList.get(position).getUrl2()).resize(450,450).into(holder.imageView2);
return convertView;
}
class ViewHolder{
TextView textView;
ImageView imageView;
ImageView imageView2;
Button information;
}
}
Getter and Setter Class
public class Bean {
String text;
String url;
String url2;
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUrl2() {
return url2;
}
public void setUrl2(String url2) {
this.url2 = url2;
}
}
Activity Layout XML
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".OrdersActivity"
android:background="#ffffff">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/orderListView"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:dividerHeight="2dp"/>
</android.support.design.widget.CoordinatorLayout>
Content Layout XML
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".OrdersActivity"
android:id="#+id/orders">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="#+id/imageView2"
android:src="#drawable/one"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/textView2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/one"
android:id="#+id/imageView3"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignBottom="#+id/imageView2"
android:layout_alignTop="#+id/imageView2"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/informaci_n"
android:id="#+id/button5"
android:layout_below="#+id/button4"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/entregado"
android:id="#+id/button3"
android:layout_below="#+id/imageView2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/no_entregado"
android:id="#+id/button4"
android:layout_below="#+id/button3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
I ended up figuring it out. In case anyone else wants to do this, this is the code I used. I just added a horizontalScrollView and I added a linearLayout with a horizontal direction inside the horizontalScrollView and then I added the images inside that linearLayout. This was my code.
MainActivity
public class MainActivity extends AppCompatActivity {
ListView list;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
String a1 = "https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Soccer_ball.svg/2000px-Soccer_ball.svg.png";
String a2 = "https://s-media-cache-ak0.pinimg.com/736x/91/27/24/912724cb45a6a2ba468024a5285b01e7.jpg";
String[] descriptionArray = {"Description 1", "Description 2"};
String[] photoArray = {a1,a2,a1,a2,a1,a2,a1};
String[] photoArray2 = {a2,a1,a2,a1,a2,a1,a2};
String[] photoArray3 = {a1,a2,a1,a2,a1,a2,a1};
String [] photoArray4 = {a2,a1,a2,a1,a2,a1,a2};
String[] photoArray5 = {a1,a2,a1,a2,a1,a2,a1};
String[] photoArray6 = {a2,a1,a2,a1,a2,a1,a2};
String[] photoArray7 = {a1,a2,a1,a2,a1,a2,a1};
list = (ListView) findViewById(R.id.listView);
List<Bean> myList = new ArrayList<>();
for(int i = 0; i < descriptionArray.length; i++) {
Bean bean = new Bean();
bean.setText(descriptionArray[i]);
bean.setUrl(photoArray[i]);
bean.setUrl2(photoArray2[i]);
bean.setUrl3(photoArray3[i]);
bean.setUrl4(photoArray4[i]);
bean.setUrl5(photoArray5[i]);
bean.setUrl6(photoArray6[i]);
bean.setUrl7(photoArray7[i]);
myList.add(bean);
}
MyAdapter adapter = new MyAdapter(MainActivity.this, myList);
list.setAdapter(adapter);
}
}
My Adapter
public class MyAdapter extends BaseAdapter {
private Context mContext;
private List<Bean> mList;
public MyAdapter(Context context,List<Bean> list){
mContext=context;
mList=list;
}
#Override
public int getCount() {
return mList.size();
}
#Override
public Object getItem(int position) {
return mList.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
//use convertView recycle
if(convertView==null){
holder=new ViewHolder();
convertView = LayoutInflater.from(mContext).inflate(R.layout.content_main, parent, false);
holder.textView= (TextView) convertView.findViewById(R.id.textView);
holder.imageView= (ImageView) convertView.findViewById(R.id.imageView);
holder.imageView2 = (ImageView) convertView.findViewById(R.id.imageView2);
holder.imageView3 = (ImageView) convertView.findViewById(R.id.imageView3);
holder.imageView4 = (ImageView) convertView.findViewById(R.id.imageView4);
holder.imageView5 = (ImageView) convertView.findViewById(R.id.imageView5);
holder.imageView6 = (ImageView) convertView.findViewById(R.id.imageView6);
holder.imageView7 = (ImageView) convertView.findViewById(R.id.imageView7);
holder.horizontalScrollView= (HorizontalScrollView) convertView.findViewById(R.id.horizontalScrollView);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
holder.textView.setText(mList.get(position).getText());
Picasso.with(mContext).load(mList.get(position).getUrl()).resize(200,200).into(holder.imageView);
Picasso.with(mContext).load(mList.get(position).getUrl2()).resize(200,200).into(holder.imageView2);
Picasso.with(mContext).load(mList.get(position).getUrl3()).resize(200,200).into(holder.imageView3);
Picasso.with(mContext).load(mList.get(position).getUrl4()).resize(200,200).into(holder.imageView4);
Picasso.with(mContext).load(mList.get(position).getUrl5()).resize(200,200).into(holder.imageView5);
Picasso.with(mContext).load(mList.get(position).getUrl6()).resize(200,200).into(holder.imageView6);
Picasso.with(mContext).load(mList.get(position).getUrl7()).resize(200,200).into(holder.imageView7);
return convertView;
}
class ViewHolder{
TextView textView;
ImageView imageView;
ImageView imageView2;
ImageView imageView3;
ImageView imageView4;
ImageView imageView5;
ImageView imageView6;
ImageView imageView7;
HorizontalScrollView horizontalScrollView;
}
}
Bean Class(Getter and Setter Class)
public class Bean {
String text;
String url;
String url2;
String url3;
String url4;
String url5;
String url6;
String url7;
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUrl2() {
return url2;
}
public void setUrl2(String url2) {
this.url2 = url2;
}
public String getUrl3() {
return url3;
}
public void setUrl3(String url3) {
this.url3 = url3;
}
public String getUrl4() {
return url4;
}
public void setUrl4(String url4) {
this.url4 = url4;
}
public String getUrl5() {
return url5;
}
public void setUrl5(String url5) {
this.url5 = url5;
}
public String getUrl6() {
return url6;
}
public void setUrl6(String url6) {
this.url6 = url6;
}
public String getUrl7() {
return url7;
}
public void setUrl7(String url7) {
this.url7 = url7;
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity"
android:background="#ffffff">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/list_container" />
</android.support.design.widget.CoordinatorLayout>
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medium Text"
android:id="#+id/textView"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<HorizontalScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/horizontalScrollView"
android:layout_below="#+id/textView"
android:layout_centerHorizontal="true" >
<LinearLayout
android:id="#+id/xml_full_img_linear_below_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center"
android:orientation="horizontal" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView2" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView3" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView4" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView5" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView6" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView7" />
</LinearLayout>
</HorizontalScrollView>
</RelativeLayout>
list_container.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="53dp"
tools:context=".MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/listView"
android:dividerHeight="2dp"/>
</RelativeLayout>
Not exactly what you asked, but i think this question can help you.
HorizontalScrollView inside ListView: minor vertical scroll stops horizontal scroll

Android - update ListView in onCreate does not work

I have the following code:
public class MainActivity extends Activity {
private ListView list;
private static final String path = Environment.getExternalStorageDirectory().getPath() + File.separator + "BOE";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
list = (ListView) findViewById(R.id.listView1);
String books[] = {"Mercedes", "Skoda", "Volkswagen", "Audi", "Citroen", "plik"};
BookArrayAdapter bma = new BookArrayAdapter(this, books);
bma.setNotifyOnChange(true);
list.setAdapter(bma);
if (!new File(path).exists()) {
new File(path).mkdirs();
}
for (int i=0; i<books.length; i++) {
View v = list.getAdapter().getView(i, null, null);
String name = ((TextView)v.findViewById(R.id.row_text)).getText() + "";
for (File f:new File(path).listFiles()) {
if (f.isFile()) {
Button b = (Button) v.findViewById(R.id.row_button);
if (name.equals(f.getName().substring(0, f.getName().length()-4))) {
b.setText("Open");
} else {
b.setText("Download");
}
bma.notifyDataSetInvalidated();
bma.notifyDataSetChanged();
Log.d("AC", b.getText().toString());
}
}
}
}
public class BookArrayAdapter extends ArrayAdapter<String> {
private final Context context;
private final String[] values;
public BookArrayAdapter(Context context, String[] values) {
super(context, R.layout.row, values);
this.context = context;
this.values = values;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View rowView = inflater.inflate(R.layout.row, parent, false);
final TextView textView = (TextView) rowView.findViewById(R.id.row_text);
textView.setText(values[position]);
rowView.findViewById(R.id.row_button).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (((Button)v).getText().toString().equals("Open")) {
//open
} else {
//Download
}
}
});
return rowView;
}
}
}
and I have problems in for loop in onCreate. this Log shows correct Download/Open texts depenging on Files in file system. But the graphical representation of this list view does not changing. Here's my layout.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="${relativePackage}.${activityClass}" >
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" >
</ListView>
<RelativeLayout
android:id="#+id/main_linear_blackout"
android:layout_width="match_parent"
android:visibility="invisible"
android:layout_height="match_parent"
android:background="#CC000000" >
<ProgressBar
android:id="#+id/main_progress_startup"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
</RelativeLayout>
</RelativeLayout>
and my row.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/row"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/row_button"
android:orientation="vertical" >
<TextView
android:id="#+id/row_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ProgressBar
android:id="#+id/row_progress"
style="#android:style/Widget.ProgressBar.Horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:visibility="invisible" />
</LinearLayout>
<Button
android:id="#+id/row_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true" />
<TextView
android:id="#+id/row_percentage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/row_button"
android:layout_alignBottom="#+id/row_button"
android:layout_alignLeft="#+id/row_button"
android:layout_alignRight="#+id/row_button"
android:layout_alignTop="#+id/row_button"
android:gravity="center"
android:textAlignment="center"
android:textSize="20sp"
android:visibility="invisible" />
</RelativeLayout>
how to update it? What is wrong?
EDIT:
I moved editing single row to getView(...) overrided method on my adapter class. I don't really know why my first idea was wrong, but now it works.

I can't see ListFragment android?

I create a ListFragment for show Text & Image my code hase not any error but when i run it , it get me crash & when I see Log it don't get me any Message ?
My StartActivity.class :
public class StartActivity extends ActionBarActivity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_start);
getSupportFragmentManager().beginTransaction().replace(R.id.main_container,new Setting_Fragment()).commit();
}
}
My activity_start.xml :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/back"
tools:context="in.project.StartActivity" >
<ImageView
android:id="#+id/imgHeader"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:adjustViewBounds="true"
android:background="#e42769"
android:src="#drawable/head" />
<LinearLayout
android:id="#+id/LFooter"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="horizontal"
android:weightSum="6" >
<ImageView
android:id="#+id/img_Setting_note"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:scaleType="fitXY"
android:src="#drawable/selector_setting_note" />
<ImageView
android:id="#+id/img_Calendar"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:scaleType="fitXY"
android:src="#drawable/selector_calendar" />
<ImageView
android:id="#+id/img_Mail"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:scaleType="fitXY"
android:src="#drawable/selector_mail" />
<ImageView
android:id="#+id/img_Review_note"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:scaleType="fitXY"
android:src="#drawable/selector_review_note" />
<ImageView
android:id="#+id/img_Help"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:scaleType="fitXY"
android:src="#drawable/selector_help" />
<ImageView
android:id="#+id/img_Setting"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:scaleType="fitXY"
android:src="#drawable/selector_setting" />
</LinearLayout>
<FrameLayout
android:id="#+id/main_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/LFooter"
android:layout_below="#+id/imgHeader" />
</RelativeLayout>
My SettingArrayAdapter.class :
public class SettingArrayAdapter extends ArrayAdapter<Instructure_setting>{
private Context context;
private List<Instructure_setting> objects;
public SettingArrayAdapter(Context context, int resource, List<Instructure_setting> objects) {
super(context, resource);
this.context = context;
this.objects = objects;
}
#SuppressLint({ "ViewHolder", "InflateParams" })
#Override
public View getView(int position, View convertView, ViewGroup parent) {
Instructure_setting _Data = objects.get(position);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.listview_setting_fragment, null);
ImageView image = (ImageView) view.findViewById(R.id.img_message);
image.setImageResource(_Data.getImageResource());
TextView tv = (TextView) view.findViewById(R.id.txt_message);
tv.setText(_Data.gettxtMessage());
return view;
}
}
My Setting_Fragment.class :
public class Setting_Fragment extends ListFragment{
List<Instructure_setting> DATA = new Setting_Fragment_Data().getMessages();
public Setting_Fragment()
{
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
SettingArrayAdapter adapter = new SettingArrayAdapter(getActivity(),
R.layout.listview_setting_fragment,
DATA);
setListAdapter(adapter);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View rootView = inflater.inflate(R.layout.setting_fragment, container, false);
return rootView;
}
}
My setting_fragment.xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".StartActivity" >
<ListView
android:id="#+id/lstview_Setting_fragment"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</RelativeLayout>
My Setting_Fragment_Data.class :
public class Setting_Fragment_Data {
private List<Instructure_setting> _Messages = new ArrayList<Instructure_setting>();
public List<Instructure_setting> getMessages() {
return _Messages;
}
public Setting_Fragment_Data() {
_Messages.add(new Instructure_setting("AAA", R.drawable.period_color));
_Messages.add(new Instructure_setting("BBB", R.drawable.password_color));
_Messages.add(new Instructure_setting("CCC", R.drawable.cleare_data_color));
_Messages.add(new Instructure_setting("DDD", R.drawable.chanel_connect_color));
_Messages.add(new Instructure_setting("EEE", R.drawable.backup_color));
_Messages.add(new Instructure_setting("FFF", R.drawable.review_note_color));
_Messages.add(new Instructure_setting("GGG", R.drawable.notification_color));
_Messages.add(new Instructure_setting("HHH", R.drawable.sync_server_color));
}
}
My Instructure_setting.class :
public class Instructure_setting {
// constants for field references
public static final String TXT_Message = "TextMessage";
public static final String IMAGE_RESOURCE = "imageResource";
// private fields
private String txtMessage;
private int imageResource;
// getters and setters
public String gettxtMessage() {
return txtMessage;
}
public void settxtMessage(String txtMessage) {
this.txtMessage = txtMessage;
}
public int getImageResource() {
return imageResource;
}
public void setImageResource(int imageResource) {
this.imageResource = imageResource;
}
// Used when creating the data object
public Instructure_setting(String msg, int imageResource) {
this.txtMessage = msg;
this.imageResource = imageResource;
}
// Create from a bundle
public Instructure_setting(Bundle b) {
if (b != null) {
this.txtMessage = b.getString(TXT_Message);
this.imageResource = b.getInt(IMAGE_RESOURCE);
}
}
// Package data for transfer between activities
public Bundle toBundle() {
Bundle b = new Bundle();
b.putString(TXT_Message, this.txtMessage);
b.putInt(IMAGE_RESOURCE, this.imageResource);
return b;
}
// Output txtMessage data
#Override
public String toString() {
return txtMessage;
}
}
This is my listview_setting_fragment.xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="10dp">
<ImageView
android:id="#+id/img_message"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_margin="10dp"
android:contentDescription="placeholder" />
<TextView
android:id="#+id/txt_message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toRightOf="#+id/img_message"
android:text="placeholder"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
NOTICE : I am using from appcompat_v7 .
When you use ListFragment or ListActivity then ListView id in xml must be :
android:id="#id/android:list
Change your ListView id in xml :
<ListView
android:id="#id/android:list"
Instead of
<ListView
android:id="#+id/lstview_Setting_fragment"
Note : Try to set List Adapter in onCreateView() instead of onCreate() in Fragment.

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