Develop Reference

Issue with ListView adapter

When I comment out the code for "nameAdapter = ..." or "numAdapter = ..." and leave the other one uncommented it will display the data in the listview fine. So it is able to display both separately, however, when I leave both uncommented it will only display the data involved with numAdapter. Probably a simple mistake but I can't figure out where I went wrong.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.player);
lv = (ListView) findViewById(R.id.listView);
new Logo().execute();
new statistics().execute();
nameAdapter = new ArrayAdapter<String>(this, R.layout.simple_list_item_1, R.id.stat_name,statName);
numAdapter = new ArrayAdapter<String>(this, R.layout.simple_list_item_1, R.id.stat_number,statNum);
}
private class statistics extends AsyncTask<String, Void, String> {
//final ListView listview = (ListView) findViewById(R.id.listView);
/*String[] values = new String[]{ "Ball Control", "Crossing", "Curve",
"Dribbling", "Finishing", "Free Kick Accuracy", "Heading Accuracy", "Long Passing",
"Long Shots", "Marking", "Penalties", "Short Passing", "Shot Power", "Sliding Tackle",
"Standing Tackle", "Volleys"};*/
//String[] stats = new String[16];
#Override
protected String doInBackground(String... arg) {
Document document;
try {
document = Jsoup.connect(url).get();
num = document.select("div#stats-base p");
statNum.clear();
for (Element element : num) {
statNum.add(element.ownText());
}
name = document.select("div#stats-base span");
statName.clear();
for (Element element : name) {
statName.add(element.ownText());
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String result) {
lv.setAdapter(nameAdapter);
lv.setAdapter(numAdapter);
}
}
player.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" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/playerPic"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listView"
android:layout_below="#+id/playerPic"
android:layout_centerHorizontal="true"
android:layout_marginTop="104dp"/>
</RelativeLayout>
simple_list_item_1.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView android:id="#+id/stat_name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dip"
android:textSize="16dip"
android:textStyle="bold"/>
<TextView
android:id="#+id/stat_number"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dip"
android:textSize="16dip"
android:textStyle="bold"
android:layout_below="#id/stat_name"/>
</LinearLayout>

I think there's no mystery in that behavior. The last adapter you set to lv is the one that survives.
If what you're looking for is to add both statName and statNum, I'd set one of them and afterwards use .addAll(...) on the other. For instance:
lv = lv.setAdapter(nameAdapter);
lv.addAll(statNum);
nameAdapter.notifyDataSetChanged();
Don't forget the last line to let your ListView render the new data.

AutoCompleteTextView suggestion is not popping

I am adding the View to the Header of ListView in the ListActivity, after inflating which has AutoCompleteTextView and not showing the suggestions on entering text. Though it works absolutely fine in normal case but not working fine when added to Header of ListView.
header_route.xml :
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="#+id/lblride_From"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/txtFrom"
android:layout_alignParentTop="true"
android:text="#string/lblride_Route"
/>
<AutoCompleteTextView
android:id="#+id/txtFrom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/lblride_From"
android:layout_marginLeft="20dp"
android:layout_marginTop="2dp"
android:completionThreshold="1"
android:ems="10"
android:width="290dp"
android:imeOptions="actionGo"
android:popupBackground="#android:color/black" >
<requestFocus />
</AutoCompleteTextView>
<Button
android:id="#+id/hdbtnOkRoute"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/txtFrom"
android:layout_below="#+id/txtFrom"
android:layout_marginTop="2dp"
android:minHeight="40dp"
android:text="#string/txtBtnOk"
android:width="290dp" />
</RelativeLayout>
public class BusRouteActivity extends ListActivity implements TextWatcher {
AutoCompleteTextView actvFrom;
Button buttonOK;
TextView txtViewRouteItem;
ListView lstViewRoute;
ArrayAdapter<String> listAdapter;
DataBaseHelper databaseHelper;
TextView tvFooter;
Context appContext;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle(R.string.nameBusRouteActivity);
appContext = getApplicationContext();
lstViewRoute = getListView();
LayoutInflater inflater = (LayoutInflater)appContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.header_route, null);
DataBaseHelper dbh = new DataBaseHelper(getApplicationContext());
try {
dbh.createDataBase();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
dbh.openDataBase();
databaseHelper = dbh;
actvFrom = (AutoCompleteTextView) view.findViewById(R.id.txtFrom);
actvFrom.addTextChangedListener(this);
actvFrom.setOnEditorActionListener(actionListener);
ArrayAdapter<String> aroutes = new ArrayAdapter<String>(appContext, R.layout.routeitem, dbh.GetRoutes());
actvFrom.setAdapter(aroutes);
buttonOK = (Button)view.findViewById(R.id.hdbtnOkRoute);
buttonOK.setOnClickListener(OkOnClickListener);
tvFooter = new TextView(this);
tvFooter.setTextAppearance(getApplicationContext(), R.style.footerStyle);
String text = getResources().getString(R.string.footer);
tvFooter.setText(Html.fromHtml(text));
listAdapter = new ArrayAdapter<String>(getApplicationContext(), R.layout.routeitem);
lstViewRoute.addHeaderView(view, null, false);
lstViewRoute.addFooterView(tvFooter, null, true);
lstViewRoute.setClickable(true);
lstViewRoute.setSelected(true);
lstViewRoute.setAdapter(listAdapter);
}
Please let me know if I am missing any setting? Thanks in advance.

Here is one code that might help you!!
http://www.javatpoint.com/android-autocompletetextview-example

Changing the text color

I have a white background but with this layout i am blocked because text color is white too and i can't find a solution to make it red so i can set my white background, any help please (as u can see i am forced to use a red background her so i can see the white text).
public class QueueListActivity extends ListActivity {
// LIST OF ARRAY STRINGS WHICH WILL SERVE AS LIST ITEMS
ArrayList<String> listItems = new ArrayList<String>();
String newtext;
String listFiles;
// DEFINING STRING ADAPTER WHICH WILL HANDLE DATA OF LISTVIEW
ArrayAdapter<String> adapter;
// RECORDING HOW MUCH TIMES BUTTON WAS CLICKED
int clickCounter = 0;
ArrayList<String> selectedItems = new ArrayList<String>();
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.queuelistactivity);
Bundle extras1 = getIntent().getExtras();
listFiles=GetFiles();
StringTokenizer tokonizer1 = new StringTokenizer(listFiles,";");
while(tokonizer1.hasMoreElements()){
Log.i("verif","0");
listItems.add(tokonizer1.nextToken());}
initializeListItems();
if (extras1 != null) {
newtext = extras1.getString("newitem");
listItems.add(newtext);
adapter.notifyDataSetChanged();
getListView().setItemChecked(listItems.size() - 1, false);
}
}
// METHOD WHICH WILL HANDLE DYNAMIC INSERTION
public void addItems(View v) {
Intent intent = new Intent(QueueListActivity.this, AjouterFiles.class);
QueueListActivity.this.startActivity(intent);
/*
listItems.add(userName);
adapter.notifyDataSetChanged();
getListView().setItemChecked(listItems.size() - 1, false);*/
}
public void deleteItems(View v) {
String toDelete = "";
SparseBooleanArray sp = getListView().getCheckedItemPositions();
for (int i = 0; i < sp.size(); i++) {
toDelete += ";" + sp.get(i);
if (sp.get(i)) {
listItems.remove(i);
}
}
adapter.notifyDataSetChanged();
Toast.makeText(getApplicationContext(), toDelete, Toast.LENGTH_LONG).show();
initializeListItems();
}
private void initializeListItems() {
adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_multiple_choice, listItems);
setListAdapter(adapter);
ListView lv = getListView();
lv.setCacheColorHint(Color.rgb(0, 0, 0));
lv.setBackgroundColor(Color.rgb(178, 34, 34));
for (int i = 0; i < lv.getCount(); i++) {
lv.setItemChecked(i, false);
}
}

Best trick is you copy content layout file from android.R.layout.simple_list_item_multiple_choice and make your own layout(my_list_view and edit the xml file and change the text color.
adapter = new ArrayAdapter(this,my_list_view, listItems);
Edit save this file as my_list_view;
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/text1"
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:textAppearance="?android:attr/textAppearanceLarge"
android:gravity="center_vertical"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:paddingLeft="6dip"
android:paddingRight="6dip"
android:background="#FFFFFF" //white background
android:textColor="#000000" //black color text
/>

android:textColor="#android:color/white"

You can set it in the XML layout:
<TextView
...
...
android:textColor="#FF0000" >
</TextView>
Or programmatically:
textview.setTextColor(Color.RED);
//textview must be defined in your class

better to write custom adpter .
alternate but not good soltuon is use this layout xml inspace of android.R.layout.simple_list_item_multiple_choice
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/text1"
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:textAppearance="?android:attr/textAppearanceLarge"
android:gravity="center_vertical"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:paddingLeft="6dip"
android:paddingRight="6dip"
android:textColor= Color.Red //please correct the syntax
/>
This is same android.R.layout.simple_list_item_multiple_choice layout but your are now making same in your layouts with same ids to make the changes in it.

you can try custom list view.. follow the link click here

<TextView
android:id="#+id/text_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="Name"
android:textColor="#color/white"
android:textSize="11dp"
/>

Problem with id of ListView

I have a problem my ListActivity.
I have this xml:
<LinearLayout>
<ListView
android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
and inside I have this:
<LinearLayout>
<ImageView android:id="#+id/flechas"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView android:id="#+id/textoName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView android:id="#+id/textoPrice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<Button android:id="#+id/boton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="BUY"
android:layout_marginRight="0dip"
android:onClick="buy"
/>
</LinearLayout>
I use a BaseAdapter to show it, and this is the main file:
public class Info extends ListActivity{
static ArrayList<Quotes> objeto= null;
static final ArrayList<HashMap<String, String>> lista= new ArrayList<HashMap<String,String>>();
private ListView mainListView;
private InfoModel [] model;
private CustomAdapterInfo listAdapter;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mainListView= (ListView)findViewById(R.id.);
setContentView(R.layout.info);
objeto= new ArrayList<Quotes>();
Bundle extras=getIntent().getExtras();
objeto= extras.getParcelableArrayList("datos");
if ((objeto != null) && (objeto.size() != 0)){
model= new InfoModel[objeto.size()];
for (int i=0;i< objeto.size(); i++) {
model[i]= new InfoModel(0, objeto.get(i).getName(), objeto.get(i).getTrade());
}
}
ArrayList<InfoModel> datos= new ArrayList<InfoModel>();
datos.addAll(Arrays.asList(model));
listAdapter= new CustomAdapterInfo(this, datos);
mainListView.setAdapter(listAdapter);
}
But my mainListView is null. It doesn't find the R.id.
Any ideas?

android:id="#android:id/list"
I guess this should be your own ID. Like this:
android:id="#+id/main_list_view"
After that you can access it using something like:
mainListView= (ListView)findViewById(R.id.main_list_view);

If you follow this example.
If your activity extends the ListActivity, your XML should have a ListView with:
android:id="#android:id/list"
That's correct. But, the way you initialize the ListView is different:
ListView lv = getListView();
This would do the trick.

"#android:id/list"
means it is part of android package you can't call it using R.id.list( try this android.R.id.list) as R class generated for your package by ADT,instead you can get ListView object,
as ListView lView=getListView()
use setContentView method at top before you finding any View objects from XML(layouts),otherwise you will get NullPointerException.

Android TextView and null pointer exception

In my activity I do
TextView bTitle = (TextView)findViewById(R.id.TextView);
bTitle.setText(Html.fromHtml(title));
where title is a string
but i get a null pointer exception at second line ie. bTitle.setText(Html.fromHtml(title));
can anyone help???
Activity
public class NewsDetails extends ListActivity{
public static final String LOG_TAG = "Infra";
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listplaceholder);
super.onStart();
Intent myIntent = getIntent();
String id = myIntent.getStringExtra("content_id");
String title = myIntent.getStringExtra("title");
//Spanned newTitle = Html.fromHtml(title);
//tv.setText(Html.fromHtml(title));
TextView bTitle = (TextView)findViewById(R.id.TextView);
Log.d(LOG_TAG, "What is the value: " + bTitle);
bTitle.setText(Html.fromHtml(title));
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
String xml = XMLfunctions.getBodyXML(id);
String result = xml.replaceAll("<p>", "<p><div align=\"justify\">");
String nXml = result.replaceAll("</p>", "</div></p>");
TextView body = (TextView)findViewById(R.id.TextView1);
body.setText(Html.fromHtml(nXml));
//Spanned body = Html.fromHtml(nXml);
/*HashMap<String, String> map = new HashMap<String, String>();
map.put("title", tv.toString());
map.put("news", tv1.toString());
mylist.add(map);*/
/*ListAdapter adapter = new SimpleAdapter(this, mylist , R.layout.list_item, new String[] { "title", "news" }, new int[] { R.id.item_title, R.id.item_subtitle });
setListAdapter(adapter);
final ListView lv = getListView();
lv.setTextFilterEnabled(true);*/
}
Layout - listplaceholder.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:id="#id/android:list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:drawSelectorOnTop="false" />
<TextView
android:id="#id/android:empty"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="No data"
android:focusable="false"
android:clickable="true"/>
</LinearLayout>
text_view.xml
<LinearLayout android:id="#+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:id="#+id/TextView"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:textSize="16px"
android:textStyle="bold">
</TextView>
<TextView
android:id="#+id/TextView1"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:textSize="16px"
android:textStyle="bold">
</TextView>
</LinearLayout>

You should load the correct xml for your layout
setContentView(R.layout.text_view)
TextView bTitle = (TextView)findViewById(R.id.TextView);
bTitle.setText(Html.fromHtml(title));

i found two issue in your code
1)first thing is your TextView is not in listplaceholder.xml ..
so you it will be null pointer...
2)and you need add this code before setContentView();
Intent myIntent = getIntent();
String id = myIntent.getStringExtra("content_id");
String title = myIntent.getStringExtra("title");
and let me know what u want in list and where you call setAdapter for list , where is your adapter...

Make sure, that you actually have the
<TextView android:id="#+id/TextView [...]
view in your activity's layout xml.
Update
In your listplaceholder.xml there is no such TextView!
If you use the text_view.xml layout as your item renderer, then the code that tries to access the TextView should be placed inside your ListAdapter implementation's getView method!

1) Make sure R is imported from your project (and not from android.R namespace) in your import(s) section on the top
2) After the
TextView bTitle = (TextView)findViewById(R.id.TextView);
perform a log:
Log.d("debug", "bTitle: " + (bTitle != null));
and check out from terminal (if you're using Linux, if Windows, just run the logcat)
adb logcat | grep bTitle
This should tell you if you properly got the TextView from your layout (if it is present in the layout, like #rekaszeru mentioned).
3) Make sure the title variable is not null as well

Thank you all for your help. I have replaced textview with webview as i needed a lot of html formatting in my application and now my text appears in proper format and also my appliction is running fine.
Thanks