FlashLight Example in Android

ScreenShots:

activity_main.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"

    tools:context=".MainActivity" >

    <Switch

        android:id="@+id/switch1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="131dp"

        android:text="Switch" />

</RelativeLayout>

MainActivity.java:

package com.ram.flashlight;

import android.app.Activity;

import android.hardware.Camera;

import android.hardware.Camera.Parameters;

import android.os.Bundle;

import android.widget.CompoundButton;

import android.widget.CompoundButton.OnCheckedChangeListener;

import android.widget.Switch;

import android.widget.Toast;

public class MainActivity extends Activity {

Camera camera;

Parameters parameters;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final Switch switch1 = (Switch) findViewById(R.id.switch1);

switch1.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override

public void onCheckedChanged(CompoundButton arg0, boolean arg1) {

// TODO Auto-generated method stub

if (switch1.isChecked()) {

camera = Camera.open();

parameters = camera.getParameters();

parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);

camera.setParameters(parameters);

Toast.makeText(getApplicationContext(),

"Turning on FlashLight..", Toast.LENGTH_LONG)

.show();

} else {

parameters.setFlashMode(Parameters.FLASH_MODE_OFF);

camera.setParameters(parameters);

camera.release();

camera = null;

Toast.makeText(getApplicationContext(),

"Turning off FlashLight..", Toast.LENGTH_LONG)

.show();

}

}

});

}

}

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.ram.flashlight"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="14"

        android:targetSdkVersion="18" />

  <uses-permission android:name="android.permission.CAMERA" />

    <uses-feature android:name="android.hardware.camera" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.ram.flashlight.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>