DEV'S

Event-listeners Example

MainActivity.java

package com.dev.event.example;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.Toast;

public class MainActivity extends Activity implements OnCheckedChangeListener {

	public static final String TAG_NAME = "EVENTEXAMPLE";
	private EditText name_field;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main_activity);
		name_field = (EditText) findViewById(R.id.name_field);
		CheckBox sports = (CheckBox) findViewById(R.id.sports);
		CheckBox travel = (CheckBox) findViewById(R.id.travel);
		CheckBox business = (CheckBox) findViewById(R.id.business);

		sports.setOnCheckedChangeListener(this);
		travel.setOnCheckedChangeListener(this);
		business.setOnCheckedChangeListener(this);

		RadioButton school_only = (RadioButton) findViewById(R.id.school);
		RadioButton post_graduation = (RadioButton) findViewById(R.id.pg);
		RadioButton under_graduation = (RadioButton) findViewById(R.id.ug);

		school_only.setOnCheckedChangeListener(this);
		post_graduation.setOnCheckedChangeListener(this);
		under_graduation.setOnCheckedChangeListener(this);
		Button submit = (Button) findViewById(R.id.submit);

		submit.setOnClickListener(new View.OnClickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Log.d(TAG_NAME, "Submit button clicked");
				displayMsg("Submit button clicked");
				// Toast.makeText(MainActivity.this, "Submit button clicked",
				// Toast.LENGTH_SHORT).show();
			}
		});
	}

	@Override
	protected void onResume() {
		// TODO Auto-generated method stub
		super.onResume();
	}

	@Override
	public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
		// TODO Auto-generated method stub
		// Log.d(TAG_NAME,
		// "A checkbox/Radio called id "+buttonView.getId()+" is set "+isChecked);

		// if (buttonView.getId() == R.id.sports){
		// Log.d(TAG_NAME, "A checkbox called Sports is set "+isChecked);
		// }else if (buttonView.getId() == R.id.travel){
		// Log.d(TAG_NAME, "A checkbox called Travel is set "+isChecked);
		// }else if (buttonView.getId() == R.id.business){
		// Log.d(TAG_NAME, "A checkbox called Business is set "+isChecked);
		// }else{
		//
		// }

		switch (buttonView.getId()) {
		case R.id.sports:
			Log.d(TAG_NAME, "A checkbox called Sports is set " + isChecked);
			// name_field.setText("Sports called");

			break;

		case R.id.business:
			Log.d(TAG_NAME, "A checkbox called Business is set " + isChecked);
			break;

		case R.id.travel:
			Log.d(TAG_NAME, "A checkbox called Travel is set " + isChecked);
			break;

		case R.id.school:
			Log.d(TAG_NAME, "A RadioButton called School is set " + isChecked);
			break;

		case R.id.pg:
			Log.d(TAG_NAME, "A RadioButton called PostGraduation is set "
					+ isChecked);
			break;

		case R.id.ug:
			Log.d(TAG_NAME, "A RadioButton called UnderGraduation is set "
					+ isChecked);
			break;

		default:
			break;
		}

	}

	private void displayMsg(String msg) {
		Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
	}
}

main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="10dp" >

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/name" />

        <EditText
            android:id="@+id/name_field"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/name_hint" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:text="@string/choice_text" />

        <CheckBox
            android:id="@+id/sports"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/sports" />

        <CheckBox
            android:id="@+id/travel"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/travel" />

        <CheckBox
            android:id="@+id/business"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/business" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:text="@string/option_text" />

        <RadioGroup
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <RadioButton
                android:id="@+id/school"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="@string/school" />

            <RadioButton
                android:id="@+id/ug"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="@string/ug" />

            <RadioButton
                android:id="@+id/pg"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="@string/pg" />
        </RadioGroup>

        <Button
            android:id="@+id/submit"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginTop="10dp"
            android:text="@string/submit" />
    </LinearLayout>

</ScrollView>

strings.xml

<resources>

    <string name="app_name">EventExample</string>
    <string name="name">Name:</string>
    <string name="name_hint">Enter name here</string>
    <string name="my_text">A Value here</string>
    <string name="choice_text">Select your choice</string>
    <string name="travel">Travel</string>
    <string name="sports">Sports</string>
    <string name="business">Business</string>
    <string name="option_text">Choose Category</string>
    <string name="school">Primary Education</string>
    <string name="ug">Under Graduation</string>
    <string name="pg">Post Graduation</string>
    <string name="submit">Submit</string>

</resources>

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.dev.event.example"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity android:name="MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Android

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