Android實(shí)現(xiàn)翻轉(zhuǎn)及延遲動畫效果

 /** * 翻轉(zhuǎn)動畫 * * @param context        當(dāng)前上下文，提供給setCameraDistance()使用 * @param backgroundView 背景View * @param frontView      當(dāng)前處于前面的View * @param behindView     想要翻轉(zhuǎn)顯示的View */public static void setFlipAnimation(Context context, View backgroundView,                                    View frontView, View behindView) {    setCameraDistance(context, backgroundView, backgroundView);    setCameraDistance(context, frontView, behindView);    setAlphaAnimation(frontView, 1, 0, 0, 500, false);    //必須讓backgroundView和frontView同時(shí)翻轉(zhuǎn) 否則會出現(xiàn)異常    setRotateAnimation(backgroundView, ROTATION_Y, 0,            180, 0, 1000, false);    setRotateAnimation(frontView, ROTATION_Y, 0, 180,            0, 1000, false);    setRotateAnimation(behindView, ROTATION_Y, 0, -180,            0, 1000, false);    setAlphaAnimation(behindView, 0, 1,            500, 500, true);}

/** * 調(diào)整相機(jī)距離，避免旋轉(zhuǎn)的時(shí)候高度差變化引起視覺效果差 * * @param context    當(dāng)前上下文 * @param frontView  正面的view * @param behindView 背面的view */private static void setCameraDistance(Context context, View frontView, View behindView) {    int distance = 16000;    float scale = context.getResources().getDisplayMetrics().density * distance;    frontView.setCameraDistance(scale);    behindView.setCameraDistance(scale);}

/** * 透明動畫 * 最后一個(gè)isVisible是為了防止alpha為0時(shí)控件依然可被點(diǎn)擊 */public static void setAlphaAnimation(final View view, float startAlpha,                                     float endAlpha, long delayMills,                                     long duration, boolean isVisible) {    ObjectAnimator animator;    animator = ObjectAnimator.ofFloat(view, "alpha", startAlpha, endAlpha);    animator.setDuration(duration).setStartDelay(delayMills);    animator.start();    //透明度動畫伴隨著頁面是否可見，否則前一個(gè)頁面仍然有點(diǎn)擊事件    //如果為true，即要顯示的頁面，如果為false，即要隱藏的頁面    if (isVisible) {        animator.addListener(new Animator.AnimatorListener() {            @Override            public void onAnimationStart(Animator animation) {                view.setVisibility(View.VISIBLE);            }
            @Override            public void onAnimationEnd(Animator animation) {
            }
            @Override            public void onAnimationCancel(Animator animation) {
            }
            @Override            public void onAnimationRepeat(Animator animation) {
            }        });    } else {        animator.addListener(new Animator.AnimatorListener() {            @Override            public void onAnimationStart(Animator animation) {
            }
            @Override            public void onAnimationEnd(Animator animation) {                view.setVisibility(View.INVISIBLE);            }
            @Override            public void onAnimationCancel(Animator animation) {
            }
            @Override            public void onAnimationRepeat(Animator animation) {
            }        });    }}

/** * 平移動畫 * translationDistance指的是應(yīng)該平移多少距離 */public static void setTranslationAnimation(View view, String translation,                                           float startTranslation, float translationDistance,                                           long delayMills, long duration,boolean isOvershoot) {    ObjectAnimator animator;    animator = ObjectAnimator.ofFloat(view, translation, startTranslation,            translationDistance).setDuration(duration);    animator.setStartDelay(delayMills);    if (isOvershoot){        animator.setInterpolator(new OvershootInterpolator(1.5f));    }    animator.start();}/** * 旋轉(zhuǎn)動畫，其中isOvershoot代表是否有回彈效果 */public static void setRotateAnimation(View view, String rotate, float startAngle,                                      float endAngle, long delayMills,                                      long duration, boolean isOvershoot) {    ObjectAnimator animator;    if (ROTATION_X.equals(rotate)) {        animator = ObjectAnimator.ofFloat(view, ROTATION_X, startAngle, endAngle);    } else if (ROTATION_Y.equals(rotate)) {        animator = ObjectAnimator.ofFloat(view, ROTATION_Y, startAngle, endAngle);    } else {        throw new RuntimeException("rotate can not be else string," +                " except 'rotationY,rotationX'");    }    if (isOvershoot) {        animator.setInterpolator(new OvershootInterpolator(1.5f));    }    animator.setDuration(duration).setStartDelay(delayMills);    animator.start();}

/** * 設(shè)置移動延遲動畫，類似于每個(gè)控件依次入場或退場動畫 * * @param isVisible    控件是否可見 參考setAlphaAnimation解釋 * @param eachDelay    每一個(gè)控件進(jìn)場或退場的延遲時(shí)間 * @param eachDuration 每一個(gè)控件的duration * @param views        控件可變長參數(shù)，按順序輸入依次進(jìn)場或退場 */public static void setMoveDelayAnimation(String translation,                                         float startTranslation, float endTranslation,                                         float startAlpha, float endAlpha, boolean isVisible,                                         long firstDelay, long eachDelay, long eachDuration,                                         @NonNull View... views) {    int i = 0;    for (View view : views) {        if (i == 0) {            setTranslationAnimation(view, translation,                    startTranslation, endTranslation, firstDelay, eachDuration,true);            setAlphaAnimation(view, startAlpha, endAlpha, firstDelay, eachDuration, isVisible);        } else {            long delayMills = eachDelay * i + firstDelay;            setTranslationAnimation(view, translation,                    startTranslation, endTranslation, delayMills, eachDuration,true);            setAlphaAnimation(view, startAlpha, endAlpha, delayMills, eachDuration, isVisible);        }        i++;    }}

//登錄信息頁面依次從右往左出現(xiàn)PocketAnimation.setMoveDelayAnimation(PocketAnimation.TRANSLATION_X,            SizeUtils.dp2px(100), 0, 1, true,            1000, 100, 500,            mSignInLayoutLogin, mSignInLayoutAccount, mSignInLayoutPassword,            mSignInLayoutSignIn, mSignInLayoutSignUp, mSignInLayoutForgetPassword);