Android İçin El Feneri Yapma

import android.R.layout;


import android.graphics.drawable.Drawable;


import android.hardware.Camera;


import android.hardware.Camera.Parameters;


import android.media.MediaPlayer;


import android.os.Bundle;


import android.app.Activity;


import android.content.pm.PackageManager;


import android.content.res.Resources;


import android.view.Menu;


import android.view.View;


import android.widget.Button;


import android.widget.ImageView;


import android.widget.LinearLayout;


import android.widget.RelativeLayout;


import android.widget.Toast;

protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);


        setContentView(R.layout.activity_main);


        light.setOnClickListener(new View.OnClickListener() {    


            @Override


            public void onClick(View v) {


                if(a==0){


        


                    isikac();


                    


                }


                else if(a==1){


                    


                    isikkapat();


                }


            }


        });


    }

int a=0;


    Camera cam = null;


     public void isikkapat() {


        try {


            sescal();


            if (getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH)) {


                cam.stopPreview();


                cam.release();


                cam = null;    


                a = 0;


            }


        } catch (Exception e) {


            e.printStackTrace();


            Toast.makeText("Işığı kapatırken problem oluştu", Toast.LENGTH_SHORT).show();


        }


    }


    public void isikac() {


        ImageView arka = (ImageView)findViewById(R.id.imageView2); 


        try {


            arka.setImageResource(R.raw.shine);


            sescal();


            if (getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH)) {


                cam = Camera.open();


                cam.cancelAutoFocus();


                Parameters p = cam.getParameters();


                p.setFlashMode(Parameters.FLASH_MODE_TORCH);


                cam.setParameters(p);


                cam.startPreview();


                a=1;


             


            }


        } catch (Exception e) {


            e.printStackTrace();


            Toast.makeText("Işığı açarken problem oluştu.", Toast.LENGTH_SHORT).show();


        }


    }