本篇内容介绍了“Android如何使用自定义view在指定时间内匀速画一条直线”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
1.效果图：
2.自定义view实现
public class UniformLine extends View {
private int x, y, nextX, nextY, incrementY, incrementX;
public UniformLine(Context context) {
super(context);
}
public UniformLine(Context context, int x, int y, int nextX, int nextY) {
super(context);
this.x = x;
this.y = y;
this.nextX = nextX;
this.nextY = nextY;
init();
}
private void init() {
p = new Paint();
p.setColor(Color.WHITE);
p.setAntiAlias(true);
p.setStrokeWidth(4.0f);
ValueAnimator valueAnimatorX = ValueAnimator.ofFloat(x, nextX);
valueAnimatorX.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
incrementX = Math.round((Float) animation.getAnimatedValue());
invalidate();
}
});
ValueAnimator valueAnimatorY = ValueAnimator.ofInt(y, nextY);
valueAnimatorY.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
incrementY = (int) animation.getAnimatedValue();
invalidate();
}
});
AnimatorSet animatorSet = new AnimatorSet();
LinearInterpolator ll = new LinearInterpolator();
animatorSet.setInterpolator(ll);//匀速
animatorSet.setDuration(2000);
animatorSet.playTogether(valueAnimatorX, valueAnimatorY);
animatorSet.start();
}
Paint p;
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawLine(Util.Div(Math.round(x)), Util.Div(Math.round(y)),
Util.Div(Math.round(incrementX)), Util.Div(Math.round(incrementY)), p);// 斜线
}
}3.调用
uniformLine = new UniformLine(mContext, 300, 500, 600, 200); addView(uniformLine);
“Android如何使用自定义view在指定时间内匀速画一条直线”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注创新互联网站，小编将为大家输出更多高质量的实用文章！
