ViewAnimation.java

package com.ichi2.anim;

import android.view.animation.AccelerateInterpolator;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.TranslateAnimation;

public class ViewAnimation {

    public static final int SLIDE_IN_FROM_RIGHT = 0;
    public static final int SLIDE_OUT_TO_RIGHT = 1;
    public static final int SLIDE_IN_FROM_LEFT = 2;
    public static final int SLIDE_OUT_TO_LEFT = 3;
    public static final int SLIDE_IN_FROM_BOTTOM = 4;
    public static final int SLIDE_IN_FROM_TOP = 5;

    public static final int FADE_IN = 0;
    public static final int FADE_OUT = 1;


    public static Animation slide(int type, int duration, int offset) {
        Animation animation;
        switch (type) {
            case SLIDE_IN_FROM_RIGHT:
                animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, +1.0f, Animation.RELATIVE_TO_SELF, 0.0f,
                        Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f);
                animation.setInterpolator(new DecelerateInterpolator());
                break;
            case SLIDE_OUT_TO_RIGHT:
                animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, +1.0f,
                        Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f);
                animation.setInterpolator(new AccelerateInterpolator());
                break;
            case SLIDE_IN_FROM_LEFT:
                animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, -1.0f, Animation.RELATIVE_TO_SELF, 0.0f,
                        Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f);
                animation.setInterpolator(new DecelerateInterpolator());
                break;
            case SLIDE_OUT_TO_LEFT:
                animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, -1.0f,
                        Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f);
                animation.setInterpolator(new AccelerateInterpolator());
                break;
            case SLIDE_IN_FROM_BOTTOM:
                animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f,
                        Animation.RELATIVE_TO_SELF, +1.0f, Animation.RELATIVE_TO_SELF, 0.0f);
                animation.setInterpolator(new DecelerateInterpolator());
                break;
            case SLIDE_IN_FROM_TOP:
                animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f,
                        Animation.RELATIVE_TO_SELF, -1.0f, Animation.RELATIVE_TO_SELF, 0.0f);
                animation.setInterpolator(new DecelerateInterpolator());
                break;
            default:
                animation = null;
        }
        animation.setDuration(duration);
        animation.setStartOffset(offset);
        return animation;
    }


    public static Animation fade(int type, int duration, int offset) {
        float startValue = type;
        Animation animation = new AlphaAnimation(startValue, 1.0f - startValue);
        animation.setDuration(duration);
        if (type == FADE_IN) {
            animation.setZAdjustment(Animation.ZORDER_TOP);
        }
        animation.setStartOffset(offset);
        return animation;
    }
}