本文讲述了Android使用自定义view在指定时间内匀速画一条直线的实例代码。分享给大家供大家参考，具体如下：

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);

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，如果有疑问大家可以留言交流，谢谢大家对脚本之家的支持。