How it works?
1. Open “res/layout/main.xml” file, add a “EditText” component.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/txt1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="text"
android:gravity="center" />
</LinearLayout>
- Attach a key listener inside your activity “onCreate()” method, to monitor following events :
- If “enter” is pressed , display a message box with the message typed in the “EditText” box.
- If “Number 9″ is pressed, display a message box with message “Number 9 is pressed!”.
package ess.edittext.isourcecode;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.EditText;
public class ESSEditTextActivity extends Activity {
/** Called when the activity is first created. */
EditText etText;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
etText=(EditText) findViewById(R.id.txt1);
etText.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if((event.getAction()==KeyEvent.ACTION_DOWN)&&(keyCode==KeyEvent.KEYCODE_ENTER)){
AlertDialog.Builder b = new AlertDialog.Builder(ESSEditTextActivity.this);
b.setTitle("iSourcecode EditText");
b.setMessage(etText.getText());
b.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
b.show();
return true;
}
return false;
}
});
}
}
3. Run the apps (Screenshot)
Programming Language: Java + XMLProgramming IDE: Eclipse