rotate Bitmap by direction - Android Graphics

Android examples for Graphics:Bitmap Rotate

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Description

rotate Bitmap by direction

Demo Code


//package com.java2s;

import android.graphics.Bitmap;

import android.graphics.Matrix;

public class Main {
    public static final int ROTATE_LEFT = 0;
    public static final int ROTATE_RIGHT = 1;

    public static Bitmap rotateBitmap(Bitmap bm, int direction) {
        Bitmap returnBm;/*  w w w .  ja  v  a  2 s. c om*/
        int w = bm.getWidth();
        int h = bm.getHeight();

        Matrix matrix = new Matrix();
        if (direction == ROTATE_LEFT) {
            matrix.postRotate(-90);
        } else if (direction == ROTATE_RIGHT) {
            matrix.postRotate(90);
        }

        returnBm = Bitmap.createBitmap(bm, 0, 0, w, h, matrix, true);

        if (bm != returnBm) {
            bm.recycle();
        }

        return returnBm;
    }
}

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