RadarScanView
???View?????
??
?????SweepGradient?????? ???????
Shader shader = new SweepGradient(centerX, centerY, Color.TRANSPARENT, tailColor);
mPaintRadar.setShader(shader);
????????
matrix.postRotate(start, centerX, centerY);
?????????????View?????onMeasure?onSizeChanged?onDraw?????????????
???
????????
new Handler().postDelayed(new Runnable()
{
@Override
public void run()
{
randomTextView.addKeyWord("???");
randomTextView.addKeyWord("???");
randomTextView.show();
}
}
, 2 * 1000);
??????????
