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);

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