不调用BitmapTransformation中的Glide transform（）

Question

我试图用Glide旋转我的图像。我认为问题是没有调用方法transform（）。因此，System.out.print永远不会显示，但同时，图像在手机上正确旋转，但Android Studio仿真器（Android 3.0.0，API 26）都没有旋转。我使用的是Glide 4.7.1

我希望你能帮助我：

BitmapTransformation：

public class RotateTransformation extends BitmapTransformation {

private static final String ID = "com.example.app.aim_app.RotateTransformation";
private static final byte[] ID_BYTES = ID.getBytes(Charset.forName("UTF-8"));
private final float rotateRotationAngle;

public RotateTransformation(final float rotateRotationAngle) {
    this.rotateRotationAngle = rotateRotationAngle;
}

@Override
public Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
    if (toTransform.getWidth() == outWidth && toTransform.getHeight() == outHeight) {
        System.out.print("notTransform: " + outWidth + " " + outHeight + " " + toTransform.getWidth() + " " + toTransform.getHeight());
        return toTransform;
    }
    System.out.print("transform: " + outWidth + " " + outHeight + " " + toTransform.getWidth() + " " + toTransform.getHeight());
    Matrix matrix = new Matrix();
    matrix.postRotate(rotateRotationAngle);

    return Bitmap.createBitmap(toTransform, 0, 0, toTransform.getWidth(), toTransform.getHeight(), matrix, true);
}

@Override
public boolean equals(Object o) {
    if (o instanceof RotateTransformation) {
        RotateTransformation other = (RotateTransformation) o;
        return rotateRotationAngle == other.rotateRotationAngle;
    }
    return false;
}

@Override
public int hashCode() {
    return Util.hashCode(ID.hashCode(), Util.hashCode(rotateRotationAngle));
}

@Override
public void updateDiskCacheKey(MessageDigest messageDigest) {
    messageDigest.update(ID_BYTES);

    byte[] radiusData = ByteBuffer.allocate(4).putFloat(rotateRotationAngle).array();
    messageDigest.update(radiusData);
}

使用RotateTransformation

if (....) {
   GlideApp.with(ActivityManager.getCurrentActivity()).load(resource).transform(new RotateTransformation(180)).into(imageView);
} else {
   GlideApp.with(ActivityManager.getCurrentActivity()).load(resource).transform(new RotateTransformation(90)).into(imageView);
}