Java 如何将位图图像转换为可绘制图像，以便在另一个位图图像上显示

我有一个扩展视图的类……在这个类中，我有两个位图图像，一个显示在另一个上面……为此，我尝试将一个位图图像转换为可绘制图像，但它无法在第一个位图图像上显示我正在尝试的内容……

public class ShowCanvas extends View {

Bitmap CanvasBitmap;
Bitmap ScaledBitmap;
Bitmap smallbitmap;
private static final int INVALID_POINTER_ID = -1;

private Drawable mImage;
private float mPosX;
private float mPosY;

private float mLastTouchX;
private float mLastTouchY;
private int mActivePointerId = INVALID_POINTER_ID;

private ScaleGestureDetector mScaleDetector;
private float mScaleFactor = 1.f;



public ShowCanvas(Context context) {
    super(context);
    // TODO Auto-generated constructor stub

    ScaledBitmap = DrawView.scaled;



**when i get the image from drawable it shows over the first one...**   

mImage=getResources（）.getDrawable（R.drawable.dress01）

但是当我使用它时，它会显示图像…

public class ShowCanvas extends View {

Bitmap CanvasBitmap;
Bitmap ScaledBitmap;
Bitmap smallbitmap;
private static final int INVALID_POINTER_ID = -1;

private Drawable mImage;
private float mPosX;
private float mPosY;

private float mLastTouchX;
private float mLastTouchY;
private int mActivePointerId = INVALID_POINTER_ID;

private ScaleGestureDetector mScaleDetector;
private float mScaleFactor = 1.f;



public ShowCanvas(Context context) {
    super(context);
    // TODO Auto-generated constructor stub

    ScaledBitmap = DrawView.scaled;



**when i get the image from drawable it shows over the first one...**   

mImage=新的BitmapDrawable（getResources（），Dress.bitmap）

}

使用此选项将位图图像转换为可绘制图像

使用此选项将位图图像转换为可绘制图像

Drawable d =new BitmapDrawable(bitmap);