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
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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
}
}
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3.调用
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uniformLine = new UniformLine(mContext, 300, 500, 600, 200);
addView(uniformLine);
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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，谢谢大家对服务器之家的支持。
原文链接：https://blog.csdn.net/meetings/article/details/78853114