Is there a way to add two textviews to arrayadapter

Question

I want to use two textviews side by side in my listview and also want to perform search on them. Is there any way to do this without creating any new class? Here is what I have done so far:

public class MainActivity extends Activity {
final String[] elename ={"Hydrogen","Helium","Lithium","Beryllium","Boron","Carbon","Nitrogen","Oxygen","Fluorine","Neon","Sodium","Magnesium","Aluminium","Silicon","Phosphorous","Sulphur","Chlorine","Argon","Potassium","Calcium","Scandium","Titanium","Vanadium","Chromium","Manganese","Iron","Cobalt","Nickel","Copper","Zinc","Gallium","Germanium","Arsenic","Selenium","Bromine","Krypton","Rubidium","Strontium","Yttrium","Zirconium","Niobium","Molybdenum","Technetium","Ruthenium","Rhodium","Palladium","Silver","Cadmium","Indium","Tin","Antimony","Tellurium","Iodine","Xenon","Caesium","Barium","Lanthanum","Cerium","Praseodymium","Neodymium","Promethium","Samarium","Europium","gadoliium","Terbium","Dysprosium","Holmium","Erbium","Thulium","Ytterbium","Lutetium","Hafnium","Tantalum","Tungsten","Rhenium","Osmium","Iridium","Platinum","Gold","Mercury","Thallium","Lead","Bismuth","Polonium","Astatine","Radon","Francium","Radium","Actinium","Thorium","Protactinium","Uranium","Neptunium","Plutonium","Americium","Curium","Berkelium","Californium","Einsteinium","Fermium","Mendelevium","Nobelium","Lawrencium","Rutherfordium","Dubnium","Seaborgium","Bohrium","Hassium","Meitnerium","Darmstadtium","Roentgenium","Copernicium","Ununtrium","Ununquadium","Ununpentium","Ununhexium","Ununseptium","Ununoctium"};
final String[] nos = {"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33","34","35","36","37","38","39","40","41","42","43","44","45","46","47","48","49","50","51","52","53","54","55","56","57","58","59","60","61","62","63","64","65","66","67","68","69","70","71","72","73","74","75","76","77","78","79","80","81","82","83","84","85","86","87","88","89","90","91","92","93","94","95","96","97","98","99","100","101","102","103","104","105","106","107","108","109","110","111","112","113","114","115","116","117","118"};

ArrayAdapter<String> adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    adapter = new ArrayAdapter<String>(this, R.layout.list_item,R.id.element_name, elename);
    final EditText searchBar = (EditText) findViewById(R.id.searchbar);
    final DrawerLayout drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
    final ListView navList = (ListView) findViewById(R.id.left_drawer);
    final LinearLayout linearLayout = (LinearLayout)findViewById(R.id.left_drawer_layout);
    navList.setAdapter(adapter);


    navList.setOnItemClickListener(new AdapterView.OnItemClickListener(){
        @Override
        public void onItemClick(AdapterView<?> parent, View view, final int pos,long id){
            //Change view according to numbers

            drawer.closeDrawer(linearLayout);
        }
    });

    //filter list view after search instantly
    searchBar.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
            // When user changed the Text
            MainActivity.this.adapter.getFilter().filter(cs);
        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3) {

        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    });

    //hide the keyboard after search on touch list view
    navList.setOnScrollListener(new AbsListView.OnScrollListener() {
        public void onScrollStateChanged(AbsListView view, int scrollState) {
            //hide keyboard
            InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(navList.getWindowToken(), 0);
        }

        public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        }
    });

    navList.setEmptyView(findViewById(R.id.empty));

  }
}

The line:

adapter = new ArrayAdapter<String>this,R.layout.list_item,R.id.element_name,elename);

assign the value of final String[] elename to a textview in my layout. So, is there any way to add one more textview and assign it the value of final String[] nos in the same line or without having to make a new class?.

Sorry if this is a dumb question but I am a beginner!

EDIT: Crash logcat

java.lang.NullPointerException
    at com.example.navigationdrawer.CustomAdapter.getView(CustomAdapter.java:34)
    at android.widget.AbsListView.obtainView(AbsListView.java:1592)
    at android.widget.ListView.makeAndAddView(ListView.java:1782)
    at android.widget.ListView.fillDown(ListView.java:705)
    at android.widget.ListView.fillFromTop(ListView.java:762)
    at android.widget.ListView.layoutChildren(ListView.java:1633)
    at android.widget.AbsListView.onLayout(AbsListView.java:1422)
    at android.view.View.layout(View.java:7175)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1254)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1130)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1047)
    at android.view.View.layout(View.java:7175)
    at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:702)
    at android.view.View.layout(View.java:7175)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
    at android.view.View.layout(View.java:7175)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
    at android.view.View.layout(View.java:7175)
    at android.view.ViewRoot.performTraversals(ViewRoot.java:1146)
    at android.view.ViewRoot.handleMessage(ViewRoot.java:1865)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:130)
    at android.app.ActivityThread.main(ActivityThread.java:3687)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:507)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
    at dalvik.system.NativeStart.main(Native Method)

EDIT: MainActivity Crash

java.lang.NullPointerException
    at com.Chinmay.navigationdrawer.MainActivity$2.onTextChanged(MainActivity.java:66)
    at android.widget.TextView.sendOnTextChanged(TextView.java:6584)
    at android.widget.TextView.handleTextChanged(TextView.java:6631)
    at android.widget.TextView$ChangeWatcher.onTextChanged(TextView.java:6775)
    at android.text.SpannableStringBuilder.sendTextChange(SpannableStringBuilder.java:889)
    at android.text.SpannableStringBuilder.change(SpannableStringBuilder.java:352)
    at android.text.SpannableStringBuilder.change(SpannableStringBuilder.java:269)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:432)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:409)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:28)
    at android.view.inputmethod.BaseInputConnection.replaceText(BaseInputConnection.java:654)
    at android.view.inputmethod.BaseInputConnection.setComposingText(BaseInputConnection.java:415)
    at com.android.internal.view.IInputConnectionWrapper.executeMessage(IInputConnectionWrapper.java:328)
    at com.android.internal.view.IInputConnectionWrapper$MyHandler.handleMessage(IInputConnectionWrapper.java:79)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:130)
    at android.app.ActivityThread.main(ActivityThread.java:3687)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:507)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
    at dalvik.system.NativeStart.main(Native Method)

New updated Mainactivity:

public class MainActivity extends Activity {
final String[] elename ={"Hydrogen","Helium","Lithium","Beryllium","Boron","Carbon","Nitrogen","Oxygen","Fluorine","Neon","Sodium","Magnesium","Aluminium","Silicon","Phosphorous","Sulphur","Chlorine","Argon","Potassium","Calcium","Scandium","Titanium","Vanadium","Chromium","Manganese","Iron","Cobalt","Nickel","Copper","Zinc","Gallium","Germanium","Arsenic","Selenium","Bromine","Krypton","Rubidium","Strontium","Yttrium","Zirconium","Niobium","Molybdenum","Technetium","Ruthenium","Rhodium","Palladium","Silver","Cadmium","Indium","Tin","Antimony","Tellurium","Iodine","Xenon","Caesium","Barium","Lanthanum","Cerium","Praseodymium","Neodymium","Promethium","Samarium","Europium","Gadolinium","Terbium","Dysprosium","Holmium","Erbium","Thulium","Ytterbium","Lutetium","Hafnium","Tantalum","Tungsten","Rhenium","Osmium","Iridium","Platinum","Gold","Mercury","Thallium","Lead","Bismuth","Polonium","Astatine","Radon","Francium","Radium","Actinium","Thorium","Protactinium","Uranium","Neptunium","Plutonium","Americium","Curium","Berkelium","Californium","Einsteinium","Fermium","Mendelevium","Nobelium","Lawrencium","Rutherfordium","Dubnium","Seaborgium","Bohrium","Hassium","Meitnerium","Darmstadtium","Roentgenium","Copernicium","Ununtrium","Ununquadium","Ununpentium","Ununhexium","Ununseptium","Ununoctium"};
final String[] nos = {"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33","34","35","36","37","38","39","40","41","42","43","44","45","46","47","48","49","50","51","52","53","54","55","56","57","58","59","60","61","62","63","64","65","66","67","68","69","70","71","72","73","74","75","76","77","78","79","80","81","82","83","84","85","86","87","88","89","90","91","92","93","94","95","96","97","98","99","100","101","102","103","104","105","106","107","108","109","110","111","112","113","114","115","116","117","118"};
CustomAdapter cus;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    final EditText searchBar = (EditText) findViewById(R.id.searchbar);
    final DrawerLayout drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
    final ListView navList = (ListView) findViewById(R.id.left_drawer);
    final LinearLayout linearLayout = (LinearLayout)findViewById(R.id.left_drawer_layout);
    CustomAdapter cus = new CustomAdapter(MainActivity.this,elename,nos);
    navList.setAdapter(cus);


    navList.setOnItemClickListener(new AdapterView.OnItemClickListener(){
        @Override
        public void onItemClick(AdapterView<?> parent, View view, final int pos,long id){
            //Change view according to numbers

            drawer.closeDrawer(linearLayout);
        }
    });

    //filter list view after search instantly
    searchBar.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
            // When user changed the Text
            MainActivity.this.cus.getFilter().filter(cs);
        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3) {

        }

        @Override
        public void afterTextChanged(Editable s) {
        }
    });

    //hide the keyboard after search on touch list view
    navList.setOnScrollListener(new AbsListView.OnScrollListener() {
        public void onScrollStateChanged(AbsListView view, int scrollState) {
            //hide keyboard
            InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            imm.hideSoftInputFromWindow(navList.getWindowToken(), 0);
        }

        public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        }
    });

    navList.setEmptyView(findViewById(R.id.empty));

}
}

yes you can http://stackoverflow.com/questions/16062569/how-to-construct-and-display-the-info-in-simple-list-item-2. — Raghunandan, Jan 27 '14 at 12:43
@Raghunandan can you please post the code with reference to my question so that it will be easier to understand as i have 118 values in my `elename` and `nos`. — user3234390, Jan 27 '14 at 12:47
pls read the docs and use the link as a reference. if you are asking for a complete code sorry i can't help — Raghunandan, Jan 27 '14 at 12:50
nope i am not asking for complete code sir, what I am asking is which method to override and where. — user3234390, Jan 27 '14 at 12:51
ArrayAdapter has. see the docs. http://developer.android.com/reference/android/widget/ArrayAdapter.html — Raghunandan, Jan 27 '14 at 12:52
Yup I will try! so should it be something like this: `@Override public View getView(context, android.R.layout.simple_list_item_1, android.R.id.text1,android.R.layout.simple_list_item_2, android.R.layout.text2, navList`) or should i inflate a view as given [here](http://stackoverflow.com/questions/12400338/explanation-of-the-getview-method-of-an-arrayadapter) — user3234390, Jan 27 '14 at 12:53

score 1 · Accepted Answer · edited May 23 '17 at 10:31

1

http://developer.android.com/reference/android/widget/ArrayAdapter.html

You can do as below picked from patrick's answer @ How to construct and display the info in simple_list_item_2?

new ArrayAdapter (context, android.R.layout.simple_list_item_2, android.R.id.text1, list)
  {
    public View getView(int position, View convertView, ViewGroup parent) {
      View view = super.getView(position, convertView, parent);
      TextView text1 = (TextView) view.findViewById(android.R.id.text1);
      TextView text2 = (TextView) view.findViewById(android.R.id.text2);
      text1.setText(elename[positon]);
      text2.setText(nos[position]);
      return view;
    }
  });

Or use a CustomAdapter extending ArrayAdapter

  class CustomAdapter extends ArrayAdapter<String>
  {
       String A[],B[];
       LayoutInfalter mInfalter;    
       public CustomAdapter(Context context, String[] A,String B[])
       {
          super(context,R.layout.customlayout,A);
          this.A = A;
          this.B = B;
          mInfalter = LayoutInfalter.from(context);
       }   
        public View getView(int position, View convertView, ViewGroup parent) {
          ViewHolder holder;
          if(convertView==null)
          {
               convertView = mInflater.inflate(R.layout.customlayout,parent,false);
               holder = new ViewHolder();
               holder.tv1 = (TextView)convertView.findViewById(R.id.textView1); 
               holder.tv2 = (TextView)convertView.findViewById(R.id.textView2);  
               convertView.setTag(holder); 
          }else{
                holder = (ViewHolder)convertVire.getTag();
          } 

                holder.tv1.setText(A[positon]);
                holder.tv2.setText(B[position]);
          return convertVIew;
    }
    static class ViewHolder
    {
        TextView tv1,tv2;
    }    
  }

Have a layout customlayout.xml with 2 textviews with id textView1 and textView 2 repectively.

Then

 CustomAdapter cus = new CustomAdapter(ActivityName.this,elename,nos);
 navList.setAdapter(cus);

edited May 23 '17 at 10:31

Community

1
1

answered Jan 27 '14 at 13:02

Raghunandan

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@user3234390 where you have the previous adapter code. You need to read the docs – Raghunandan Jan 27 '14 at 13:09
@user3234390 you still don't know where to place the code after seeing the edit – Raghunandan Jan 27 '14 at 13:14
extremely sorry. had probs with net connection. I am trying it out right now! – user3234390 Jan 27 '14 at 13:48
@user3234390 so what happens now? works or not working?? – Raghunandan Jan 27 '14 at 13:51
just give me 2 mins. Will surely tell you the result! – user3234390 Jan 27 '14 at 13:53
Its force closing. Here's the stack trace: `java.lang.NullPointerException` – user3234390 Jan 27 '14 at 14:04
@user3234390 indicate the line by looking at caused by part in logcat. also which method did you use the first or second? – Raghunandan Jan 27 '14 at 14:05
I used the second method. – user3234390 Jan 27 '14 at 14:05
@user3234390 what is line 34 `CustomAdapter.java` – Raghunandan Jan 27 '14 at 14:08
line 34 is `holder.tv1.setText(A[position]);` – user3234390 Jan 27 '14 at 14:10
@user3234390 do you have a layout called mylayout with 2 textviews with id textView1 and textView2? – Raghunandan Jan 27 '14 at 14:11
I got my mistake sir! – user3234390 Jan 27 '14 at 14:12
@user3234390 that i thought was easy for oyu so i don't post the same. read my answer again. if you don't initialize you end up in NPE. – Raghunandan Jan 27 '14 at 14:12
but now it crashed when i type something in the textview. – user3234390 Jan 27 '14 at 14:14
@user3234390 it will not. post the updated code and the stacktrace updated one and indicate the line of crash. There is nothing to type. listview is dynamic – Raghunandan Jan 27 '14 at 14:15
The line indicated is this : `MainActivity.this.cus.getFilter().filter(cs);` It is in my mainactivity that will filter the lisview. – user3234390 Jan 27 '14 at 14:16
@user3234390 cus is null where is declared and initalized?. Make sure you declared before onCreate and initialize in onCrate – Raghunandan Jan 27 '14 at 14:17
I will post my entire mainactivity. please check my updated question – user3234390 Jan 27 '14 at 14:17
@user3234390 do as suggested in my previous comment – Raghunandan Jan 27 '14 at 14:20
i initalised it this way: `CustomAdapter cus = new CustomAdapter(MainActivity.this,elename,nos);` but its not working – user3234390 Jan 27 '14 at 14:22
@user3234390 delcare it outside onCreate and initialzie in onCreate – Raghunandan Jan 27 '14 at 14:25
Oh i got it! but can u just help me one last time? the app doesn't force close but the search is not working properly! i type something and it shows wrong results! – user3234390 Jan 27 '14 at 14:30
@user3234390 accept this answer and start a new question with relevant details. too much commenting leading to a discussion – Raghunandan Jan 27 '14 at 14:31
Ok sure. But please help me out with my new question. – user3234390 Jan 27 '14 at 14:32
please check my new question - http://stackoverflow.com/questions/21383747/listview-filtering-not-working-android – user3234390 Jan 27 '14 at 14:46

Is there a way to add two textviews to arrayadapter

1 Answers1