Java 如何退出SurfaceView?
我使用Java 如何退出SurfaceView?,java,android,bitmap,android-canvas,surfaceview,Java,Android,Bitmap,Android Canvas,Surfaceview,我使用SurfaceView在画布上绘制一些东西。我如何定义在用户完成后取消surfaceView的方法?下面是我的SurfaceView实现。drawintop类有onDraw()但是我初始化了Preview类中的所有变量 public class Preview extends SurfaceView implements SurfaceHolder.Callback { SurfaceHolder mHolder; DrawOnTop mDrawOnTop; bo
SurfaceView
在画布上绘制一些东西。我如何定义在用户完成后取消surfaceView的方法?下面是我的SurfaceView实现。drawintop
类有onDraw()
但是我初始化了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:
现在,经过一些研究,我发现我需要使用setContentView并将其设置回我想要的活动。将可见性设置为不可见以隐藏视图
setVisibility(this.Invisible);
从surfaceview退出是什么意思?我的意思是我想摆脱所有已经绘制的东西。你可以在这里发布你的代码吗?。意思是在surfaceview上绘制画布后,你想支持你的活动吗?是的,先生,这正是我想做的。这会删除所有绘制的东西,但会给我一个黑屏。我想让它回到
活动a