我想在surfaceview上添加图像并使其可点击。我可以通过xml使用布局来做到这一点。但我不能从代码动态地做到这一点。我什至无法使用 lockcanvas 在画布上绘制图像,因为我将 SurfaceHolder 类型设置为 SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS。所以我必须做些什么才能在我的应用程序的 SurfaceView 上绘制图像。请指导我?
问问题
22926 次
1 回答
12
类似的东西
public class MSurface extends SurfaceView implements SurfaceHolder.Callback {
public MSurface(Context context) {
super(context);
getHolder().addCallback(this);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Bitmap icon = BitmapFactory.decodeResource(getResources(),R.drawable.icon);
canvas.drawColor(Color.BLACK);
canvas.drawBitmap(icon, 10, 10, new Paint());
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
// TODO Auto-generated method stub
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
Canvas canvas = null;
try {
canvas = holder.lockCanvas(null);
synchronized (holder) {
onDraw(canvas);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (canvas != null) {
holder.unlockCanvasAndPost(canvas);
}
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
}
于 2012-10-16T10:04:37.577 回答