Android autocomplete

Android autocompete is very easy. You need to create a AutoCompleteTextView. In AutoCompleteTextView you can set completionThreshold from which character you want to get autocompletion help (here i set 1, means after pressig ist character you will get help for autocomplete).


//main.xml

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical" android:layout_width="fill_parent"
 android:layout_height="fill_parent">
 <TextView android:id="@+id/selection" android:layout_width="fill_parent"
  android:layout_height="wrap_content" />
 <AutoCompleteTextView android:id="@+id/edit"
  android:layout_width="150px" android:layout_height="wrap_content"
  android:completionThreshold="1" />
 <TextView android:id="@+id/myTextViev" android:layout_width="wrap_content"
  android:layout_height="wrap_content" android:layout_x="5px"
  android:layout_y="110px" />
 <Button android:id="@+id/myButton" android:layout_width="100px"
  android:layout_height="50px" android:text="Submit" android:layout_x="5px"
  android:layout_y="60px" />
</AbsoluteLayout>

//AutoComplete.java

import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.TextView;

public class AutoComplete extends Activity implements TextWatcher,
  OnClickListener {
 TextView selection;
 AutoCompleteTextView edit;
 String[] items = { "bangladesh", "india", "pakistan", "australia", "japan",
   "china", "indiaA", "indiaC" };
 Button btn;
 TextView tv;

 @Override
 public void onCreate(Bundle icicle) {
  super.onCreate(icicle);
  setContentView(R.layout.main);
  selection = (TextView) findViewById(R.id.selection);
  edit = (AutoCompleteTextView) findViewById(R.id.edit);
  edit.addTextChangedListener(this);

  btn = (Button) findViewById(R.id.myButton);
  btn.setOnClickListener(this);
  tv = (TextView) findViewById(R.id.myTextViev);

  edit.setAdapter(new ArrayAdapter(this,
    android.R.layout.select_dialog_singlechoice, items));
 }

 public void onTextChanged(CharSequence s, int start, int before, int count) {
  // selection.setText(edit.getText());
 }

 public void beforeTextChanged(CharSequence s, int start, int count,
   int after) {
  // needed for interface, but not used
 }

 public void afterTextChanged(Editable s) {
  // needed for interface, but not used

 }

 @Override
 public void onClick(View v) {
  // TODO Auto-generated method stub
  if (v.getId() == R.id.myButton) {
   tv.setText("get: "+edit.getText());
  }

 }
}

output:



Let you want to type bangladesh or bangla or bd, after pressed b you will get all autocomplete help