[Android] Make Photo

package me.trewqa.cameratools;

import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
        StrictMode.setVmPolicy(builder.build());


        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }


    public void openCamera(View view) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            ActivityCompat.requestPermissions((Activity) this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
        }

        openBackCamera();
    }

    private String pictureImagePath = "";
    private void openBackCamera()
    {
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = timeStamp + ".jpg";
        File storageDir = Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_PICTURES);
        pictureImagePath = storageDir.getAbsolutePath() + "/" + imageFileName;
        File file = new File(pictureImagePath);
        Uri outputFileUri = Uri.fromFile(file);
        Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
        startActivityForResult(cameraIntent, 1);
    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        if (requestCode == 1)
        {
            File imgFile = new  File(pictureImagePath);
            if(imgFile.exists())
            {
                Bitmap myBitmap = BitmapFactory.decodeFile(pictureImagePath);
                myBitmap = rotateBitmap(myBitmap);

                ImageView myImage = (ImageView) findViewById(R.id.imgview);
                myImage.setImageBitmap(myBitmap);

            }
        }

    }

    public Bitmap rotateBitmap(Bitmap bitmap)
    {
        Matrix matrix = new Matrix();
        matrix.postRotate(90);

        Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap ,bitmap.getWidth(), myBitmap.getHeight(),true);
        Bitmap rotatedBitmap = Bitmap.createBitmap(scaledBitmap , 0, 0, scaledBitmap .getWidth(), scaledBitmap .getHeight(), matrix, true);

        return rotatedBitmap;
    }
}