[Solved] How to implement OnClickListener of ListView items for good performance (avoiding slow scrolling)

It’s better to use a Wrapper to access to your View and to define your OnClickListener earlier (and outside the adapter for a better usability). The following sample show how to handle 2 clickable View on one single item of the ListView with good performance: public class ItemAdapter extends BaseAdapter { private List<Item> items; private … Read more

[Solved] How to implement OnClickListener of ListView items for good performance (avoiding slow scrolling)

Introduction When it comes to implementing OnClickListener of ListView items, performance is key. Poorly implemented OnClickListeners can lead to slow scrolling and a poor user experience. In this article, we will discuss how to implement OnClickListener of ListView items for good performance, avoiding slow scrolling. We will discuss the importance of using the ViewHolder pattern, … Read more

[Solved] ListView returning null using Fragment

This is happening because you are using the wrong View variable to find the ListView. ListView lv = (ListView) view.findViewById(R.id.lvAlerts); The view variable here refers to: public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { You need to refer to this view: view = inflater.inflate(R.layout.tab_frag_alerts, container, false); You should change the declaration: View … Read more

[Solved] how to add search functionality in edittext in Android

Load all the contacts in array list or string array and then use AutoCompleteTextView for adding search functionallity Gett all contacts like this as expalined here public ArrayList<PhoneContactInfo> getAllPhoneContacts() { Log.d(“START”,”Getting all Contacts”); ArrayList<PhoneContactInfo> arrContacts = new ArrayList<PhoneContactInfo>(); PhoneContactInfo phoneContactInfo=null; Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI; Cursor cursor = context.getContentResolver().query(uri, new String[] {ContactsContract.CommonDataKinds.Phone.NUMBER,ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,ContactsContract.CommonDataKinds.Phone._ID}, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + … Read more

[Solved] Android App Crashing – List View – CSV file

Ok your program fails at this point: while ((line = reader.readLine()) != null) { String[] RowData = line.split(“,”); DataStates cur = new DataStates(); cur.setTitle(RowData[2]); cur.setPrice(RowData[3]); // now there is a ArrayIndexOutOfBoundsException cur.setDescription(RowData[4]); this.add(cur); } Index begins at 0 so I think the right code would be while ((line = reader.readLine()) != null) { String[] RowData … Read more

[Solved] Android Listview animations that don’t suck [closed]

Basically you can rotate translate scale change alpha with animations. And combine in with the many different interpolators to define the speed and acceleration of an animation. Here are the main animation docs. Some people also developped some fancier animations by combining them like a 3d flip. But it is always based on the elementary … Read more

[Solved] How to pass JSON data from ListView to new activity

You can send an object as a parameter to another activity if the object implements Parcelable: A typical implementation of Parcelable here Then, to send like parameter, something like this: Intent intent = new Intent(this, DetailMovieActivity.class); intent.putExtra(“key”, movie);//Your object that implements Parcelable startActivity(intent); And in the other activity: Bundle arguments = new Bundle(); Movie movie … Read more

[Solved] xml parsing listview in android like category,subcategory

Here i have called URL first then only declared mTitle value.thats why i have faced problem here. Now i got the solution: I have declared mTitle first afterthat only have called URL like below. mTitle = b.getString(KEY_SUBCATE); URL = “http://api1.sfsfsffsf.com/dev/categories/?fields=&categoryid=” + mTitle + “&access_token=bfb787a”; solved xml parsing listview in android like category,subcategory

[Solved] JSON parsing in fragmant [closed]

It seems that your AndroidManifest.xml doesn’t give permission for your app to access the Internet. Your error log states: Permission denied (missing INTERNET permission?) Taken from The Android docs at http://developer.android.com/reference/android/Manifest.permission.html#INTERNET String | INTERNET | Allows applications to open network sockets. Add the following line to your AndroidManifest.xml to allow Internet access: <uses-permission android:name=”android.permission.INTERNET” /> … Read more

[Solved] List View can’t run [duplicate]

try this, 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/output” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:background=”#758AA7″ android:padding=”1px” android:text=”Click : ” android:textColor=”#ffffff” /> <ListView android:id=”@android:id/list” android:layout_width=”match_parent” android:layout_height=”wrap_content” > </ListView> </LinearLayout> MainActivity.java public class MainActivity extends ListActivity { TextView content; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.listview_main); content = (TextView) findViewById(R.id.output); String[] CoffeeShop = {“Creation”,”Starbucks”,”Caribou”,”Mo’Joe” … Read more