Android Image Rotate Example

In android, we can rotate the image using matrix post rotate.
Example for Android Image Rotate :-

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

02<LinearLayout android:id="@+id/LinearLayout01"

03android:layout_width="fill_parent"

04android:layout_height="fill_parent"

05xmlns:android="http://schemas.android.com/apk/res/android"

06android:background="#ffffff"

07android:gravity="center">

08<ImageView android:id="@+id/ImageView01"

09android:layout_width="wrap_content"

10android:layout_height="wrap_content"

11android:src="@drawable/refresh" />

12</LinearLayout>

01public class ExampleApp extends Activity

02{

03    private ImageView img;

04 

05    @Override

06    protected void onCreate(Bundle savedInstanceState) {

07        super.onCreate(savedInstanceState);

08        setContentView(R.layout.main);

09 

10        img=(ImageView)findViewById(R.id.ImageView01);

11        Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.refresh);

12               // Getting width & height of the given image.

13        int w = bmp.getWidth();

14        int h = bmp.getHeight();

15               // Setting post rotate to 90

16        Matrix mtx = new Matrix();

17        mtx.postRotate(90);

18                // Rotating Bitmap

19        Bitmap rotatedBMP = Bitmap.createBitmap(bmp, 0, 0, w, h, mtx, true);

20        BitmapDrawable bmd = new BitmapDrawable(rotatedBMP);

21 

22        img.setImageDrawable(bmd);

23 

24    }

25 

26}

The output will looks like (1st image is Before rotating the image, 2nd image is After rotating the image)