如何在android中以编程方式裁剪和旋转图像？

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Rect;

public Bitmap cropImage(String imagePath, int x, int y, int width, int height) {
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inPreferredConfig = Bitmap.Config.ARGB_8888;
    Bitmap bitmap = BitmapFactory.decodeFile(imagePath, options);
    Bitmap croppedBitmap = Bitmap.createBitmap(bitmap, x, y, width, height);
    return croppedBitmap;
}

import android.graphics.Bitmap;
import android.graphics.Matrix;

public Bitmap rotateImage(Bitmap source, float angle) {
    Matrix matrix = new Matrix();
    matrix.postRotate(angle);
    return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
}