【移動應(yīng)用開發(fā)技術(shù)】Android怎么使用自定義view在指定時間內(nèi)勻速畫一條直線

【移動應(yīng)用開發(fā)技術(shù)】Android怎么使用自定義view在指定時間內(nèi)勻速畫一條直線

這篇文章給大家分享的是有關(guān)Android怎么使用自定義view在指定時間內(nèi)勻速畫一條直線的內(nèi)容。在下覺得挺實用的，因此分享給大家做個參考，一起跟隨在下過來看看吧。具體如下：1.效果圖：2.自定義view實現(xiàn)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);//勻速

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);//

斜線

}

}3.調(diào)用uniformLine

=

new

UniformLine(mContext,

300,

500,

600,

200);

addView(uniformLine);感謝各位的閱讀！關(guān)于“Andro