Android_Utils/AnimHelper.java at master · RealMoMo/Android_Utils · GitHub

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packagecom.realmo.utils;

importandroid.content.Context;
importandroid.support.v4.view.ViewCompat;
importandroid.support.v4.view.ViewPropertyAnimatorListener;
importandroid.support.v4.view.animation.FastOutSlowInInterpolator;
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.view.animation.Interpolator;


publicclassAnimHelper {
privateAnimHelper() {
thrownewRuntimeException("AnimHelper cannot be initialized!");
 }

publicstaticfinalInterpolatorINTERPOLATOR = newFastOutSlowInInterpolator();
publicstaticfinalintDURATION = 300;

publicstaticvoidscaleShow(Viewview, ViewPropertyAnimatorListenerlistener) {
ViewCompat.animate(view).scaleX(1.0f).scaleY(1.0f).alpha(1.0f).setDuration(DURATION).setListener(listener).setInterpolator(INTERPOLATOR).withLayer().start();
 }

publicstaticvoidscaleHide(Viewview, ViewPropertyAnimatorListenerlistener) {
ViewCompat.animate(view).scaleX(0f).scaleY(0f).alpha(0f).setDuration(DURATION).setListener(listener).setInterpolator(INTERPOLATOR).withLayer().start();
 }

publicstaticvoidalphaShow(Viewview, ViewPropertyAnimatorListenerlistener) {
ViewCompat.animate(view).alpha(1.0f).setDuration(DURATION).setListener(listener).setInterpolator(INTERPOLATOR).withLayer().start();
 }

publicstaticvoidalphaHide(Viewview, ViewPropertyAnimatorListenerlistener) {
ViewCompat.animate(view).alpha(0f).setDuration(DURATION).setListener(listener).setInterpolator(INTERPOLATOR).withLayer().start();
 }

publicstaticvoidtranslateUp(Viewview, ViewPropertyAnimatorListenerlistener) {
ViewCompat.animate(view).translationY(0).setDuration(DURATION).setListener(listener).setInterpolator(INTERPOLATOR).withLayer().start();
 }

publicstaticvoidtranslateDown(Viewview, ViewPropertyAnimatorListenerlistener) {
intheight = view.getHeight();
ViewGroup.LayoutParamsparams = view.getLayoutParams();
ViewGroup.MarginLayoutParamslayoutParams = paramsinstanceofViewGroup.MarginLayoutParams ? ((ViewGroup.MarginLayoutParams) params) : null;
if (layoutParams != null) height += layoutParams.bottomMargin;
ViewCompat.animate(view).translationY(height).setDuration(DURATION).setListener(listener).setInterpolator(INTERPOLATOR).withLayer().start();
 }

publicstaticfloatfloatEvaluator(floatoriginalSize, floatfinalSize, floatpercent) {
return (finalSize - originalSize) * percent + originalSize;
 }

publicstaticintargbEvaluator(intstartColor, intendColor, floatpercent) {
intstartA = (startColor >> 24) & 0xff;
intstartR = (startColor >> 16) & 0xff;
intstartG = (startColor >> 8) & 0xff;
intstartB = startColor & 0xff;

intendA = (endColor >> 24) & 0xff;
intendR = (endColor >> 16) & 0xff;
intendG = (endColor >> 8) & 0xff;
intendB = endColor & 0xff;

return ((startA + (int) (percent * (endA - startA))) << 24) |
 ((startR + (int) (percent * (endR - startR))) << 16) |
 ((startG + (int) (percent * (endG - startG))) << 8) |
 ((startB + (int) (percent * (endB - startB))));
 }

publicstaticfloatscaleEvaluator(floatoriginalSize, floatfinalSize, floatpercent) {
floatcalcSize = (finalSize - originalSize) * percent + originalSize;
returncalcSize / originalSize;
 }

/*
 // 获得状态栏的高度
 public static int getStatusBarHeight(Context context) {
 int statusHeight = -1;
 try {
 Class<?> clazz = Class.forName("com.android.internal.R$dimen");
 Object object = clazz.newInstance();
 int height = Integer.parseInt(clazz.getField("status_bar_height").get(object).toString());
 statusHeight = context.getResources().getDimensionPixelSize(height);
 } catch (Exception e) {
 e.printStackTrace();
 }
 return statusHeight;
 }
	*/
}