Question

我使用SurfaceView在画布上绘制一些东西。如何在用户完成后定义取消surfaceView的方法？下面是我的SurfaceView实现。 DrawOnTop类包含onDraw()，但我初始化了Preview类中的所有变量。

public class Preview extends SurfaceView implements SurfaceHolder.Callback {
    SurfaceHolder mHolder;

    DrawOnTop mDrawOnTop;
    boolean mFinished;

    Preview(Context context, DrawOnTop drawOnTop) {
        super(context);

        mDrawOnTop = drawOnTop;
        mFinished = false;

        // Install a SurfaceHolder.Callback so we get notified when the
        // underlying surface is created and destroyed.
        mHolder = getHolder();
        mHolder.addCallback(this);
        mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }

    public void surfaceCreated(SurfaceHolder holder) {

        //I set the bitmaps etc here
        mDrawOnTop.mBitmap = Bitmap.createBitmap(mDrawOnTop.mImageWidth,
                mDrawOnTop.mImageHeight, Bitmap.Config.ARGB_8888);

        mDrawOnTop.mBitmap.setPixels(mDrawOnTop.mRGBData, 0,
                mDrawOnTop.mImageWidth, 0, 0, mDrawOnTop.mImageWidth,
                mDrawOnTop.mImageHeight);
        Button x = new Button(getContext());
    x.setText("Hi");
    x.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {


        }

    });
        mDrawOnTop.invalidate();

    }

    public void surfaceDestroyed(SurfaceHolder holder) {

        mFinished = true;

    }

    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {

    }

}

编辑：

经过一些研究后，我发现我需要使用setContentView并将其设置回我想要的Activity。

Answer 1

设置可见性以隐藏视图

setVisibility(this.Invisible);

如何退出SurfaceView？

1 个答案: