基本上我想使用SurfaceView进行动画制作.因此该类实现了Runnable.为了实验,我想绘制一个圆圈.但是,它只显示黑屏.
我已经好几天了.如果有人能提供帮助,真的很感激.
MainActivity类
public class MainActivity extends Activity {
private Bitmap Liquid;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature (Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
DrawStripFrame D1 = new DrawStripFrame(this);
setContentView(D1);
DrawStripFrame类
public class DrawStripFrame extends SurfaceView implements Runnable{
private SurfaceHolder holder;
private boolean running = true;
public DrawStripFrame (Context context){
super (context);
holder = getHolder();
}
@Override
public void run(){
while(running){
if(holder.getSurface().isValid()){
Canvas c = holder.lockCanvas();
c.drawARGB(0, 0, 0, 0);
Paint redPaint = new Paint();
redPaint.setColor(Color.RED);
c.drawCircle(100, 100, 30, redPaint);
holder.unlockCanvasAndPost(c);
}
}
}
}
