|
在Android上实现动画,官方的SDK提供了Animations,并且介绍了两种不同模式,分别是:
1. Tween Animation:通过对场景里的对象不断做图像变换(平移、缩放、旋转)产生动画效果,即是一种渐变动画;
2. Frame Animation:顺序播放事先做好的图像,是一种画面转换动画。
同时,Animation由四种类型组成:
XML文件:
· alpha 渐变透明度动画效果
· scale 渐变尺寸伸缩动画效果
· translate 画面转换位置移动动画效果
· rotate 画面转移旋转动画效果
在Java 源码中定义了相应的类,可以使用这些类的方法来获取和操作相应的属性:
· AlphaAnimation 渐变透明度动画效果
· ScaleAnimation 渐变尺寸伸缩动画效果
· TranslateAnimation 画面转换位置移动动画效果
· RotateAnimation 画面转移旋转动画效果
具体Android的原生就不再多说了,相对复杂,有兴趣的可以直接去看google的SDK。这里分享了Rexsee的API,基于对原生的封装,可以直接使用JS实现功能调用。如:
【事件】 void onAnimationStart(String id)
【说明】 当动画开始播放时触发。
在Rexsee社区可以直接查看源码。同时,新上线的项目中心提供了在线开发服务,不需要单独准备服务器。同时也有大量的应用以分享的方式开放供查阅,关于动画的具体应用源码也可以在这里查到:http://www.rexsee.com/project/
Rexsee API:Animations源码
package rexsee.core.animation;
import rexsee.core.style.StyleSheet;
import rexsee.core.utilities.RexseeUtilities;
import android.view.View;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.AnticipateInterpolator;
import android.view.animation.AnticipateOvershootInterpolator;
import android.view.animation.BounceInterpolator;
import android.view.animation.CycleInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import android.view.animation.OvershootInterpolator;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
public class Animations extends Animation {
public Animations() {
super();
}
public static Animation getAnimation(StyleSheet style, AnimationListener listener, View view, View viewParent) {
if (view == null) return null;
if (viewParent == null) {
try {
viewParent = (View) view.getParent();
} catch (Exception e) {
viewParent = view;
}
}
AnimationSet animation = new AnimationSet(true);
String[] types = style.animation_type.split("\\+");
int length = 0;
for (int i = 0; i < types.length; i++) {
Animation a;
if (types.equalsIgnoreCase("skew")) {
a = getSkewAnimation(style, view, viewParent);
} else if (types.equalsIgnoreCase("rotate_3dy")) {
a = getRotate3dyAnimation(style, view, viewParent);
} else if (types.equalsIgnoreCase("rotate_3dx")) {
a = getRotate3dxAnimation(style, view, viewParent);
} else if (types.equalsIgnoreCase("rotate")) {
a = getRotateAnimation(style, view, viewParent);
} else if (types.equalsIgnoreCase("alpha")) {
a = getAlphaAnimation(style, view, viewParent);
} else if (types.equalsIgnoreCase("scale")) {
a = getScaleAnimation(style, view, viewParent);
} else if (types.equalsIgnoreCase("translate")) {
a = getTranslateAnimation(style, view, viewParent);
} else {
a = null;
}
if (a != null) {
animation.addAnimation(a);
length++;
}
}
if (length == 0) return null;
try {
if (listener != null) animation.setAnimationListener(listener);
} catch (Exception e) {
}
return animation;
}
public static Animation getRotateAnimation(StyleSheet style, View view, View viewParent) {
Animation animation = null;
try {
float rotateCenterX, rotateCenterY;
try {
rotateCenterX = Float.parseFloat(style.animation_rotate_center_x.replaceAll("%", ""));
rotateCenterX = rotateCenterX / 100;
if (rotateCenterX < 0) rotateCenterX = 0;
if (rotateCenterX > 1) rotateCenterX = 1;
} catch (Exception e) {
rotateCenterX = (float) 0.5;
}
try {
rotateCenterY = Float.parseFloat(style.animation_rotate_center_y.replaceAll("%", ""));
rotateCenterY = rotateCenterY / 100;
if (rotateCenterY < 0) rotateCenterY = 0;
if (rotateCenterY > 1) rotateCenterY = 1;
} catch (Exception e) {
rotateCenterY = (float) 0.5;
}
int from = Integer.parseInt(style.animation_rotate_from);
int to = Integer.parseInt(style.animation_rotate_to);
animation = new RotateAnimation(from, to, Animation.RELATIVE_TO_PARENT, rotateCenterX, Animation.RELATIVE_TO_PARENT, rotateCenterY);
animation.setDuration(Integer.parseInt(style.animation_rotate_duration));
animation.setRepeatCount(Integer.parseInt(style.animation_rotate_repeat_count));
animation.setRepeatMode(style.animation_rotate_repeat_mode.equalsIgnoreCase("normal") ? 1 : 2);
animation.setStartOffset(RexseeUtilities.getLong(style.animation_rotate_start_time, 0));
animation.setInterpolator(getInterPolator(style.animation_rotate_interpolator));
animation.initialize(view.getWidth(), view.getHeight(), viewParent.getWidth(), viewParent.getHeight());
} catch (Exception e) {
}
return animation;
}
public static Animation getAlphaAnimation(StyleSheet style, View view, View viewParent) {
Animation animation = null;
try {
float from = Float.parseFloat(style.animation_alpha_from.replaceAll("%", "")) / 100;
float to = Float.parseFloat(style.animation_alpha_to.replaceAll("%", "")) / 100;
animation = new AlphaAnimation(from, to);
animation.setDuration(Integer.parseInt(style.animation_alpha_duration));
animation.setRepeatCount(Integer.parseInt(style.animation_alpha_repeat_count));
animation.setRepeatMode(style.animation_alpha_repeat_mode.equalsIgnoreCase("normal") ? 1 : 2);
animation.setStartOffset(RexseeUtilities.getLong(style.animation_alpha_start_time, 0));
animation.setInterpolator(getInterPolator(style.animation_alpha_interpolator));
animation.initialize(view.getWidth(), view.getHeight(), viewParent.getWidth(), viewParent.getHeight());
} catch (Exception e) {
}
return animation;
}
public static Animation getScaleAnimation(StyleSheet style, View view, View viewParent) {
Animation animation = null;
try {
float scaleCenterX, scaleCenterY;
try {
scaleCenterX = Float.parseFloat(style.animation_scale_center_x.replaceAll("%", ""));
scaleCenterX = scaleCenterX / 100;
if (scaleCenterX < 0) scaleCenterX = 0;
if (scaleCenterX > 1) scaleCenterX = 1;
} catch (Exception e) {
scaleCenterX = (float) 0.5;
}
try {
scaleCenterY = Float.parseFloat(style.animation_scale_center_y.replaceAll("%", ""));
scaleCenterY = scaleCenterY / 100;
if (scaleCenterY < 0) scaleCenterY = 0;
if (scaleCenterY > 1) scaleCenterY = 1;
} catch (Exception e) {
scaleCenterY = (float) 0.5;
}
float fromX = Float.parseFloat(style.animation_scale_x_from);
float toX = Float.parseFloat(style.animation_scale_x_to);
float fromY = Float.parseFloat(style.animation_scale_y_from);
float toY = Float.parseFloat(style.animation_scale_y_to);
animation = new ScaleAnimation(fromX, toX, fromY, toY, Animation.RELATIVE_TO_PARENT, scaleCenterX, Animation.RELATIVE_TO_PARENT, scaleCenterY);
animation.setInterpolator(getInterPolator(style.animation_scale_interpolator));
animation.initialize(view.getWidth(), view.getHeight(), viewParent.getWidth(), viewParent.getHeight());
} catch (Exception e) {
}
return animation;
}
public static Animation getTranslateAnimation(StyleSheet style, View view, View viewParent) {
Animation animation = null;
toX = toX / 100;
fromY = fromY / 100;
toY = toY / 100;
animation = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, fromX, Animation.RELATIVE_TO_PARENT, toX, Animation.RELATIVE_TO_PARENT, fromY, Animation.RELATIVE_TO_PARENT, toY);
animation.setDuration(Integer.parseInt(style.animation_translate_duration));
animation.setRepeatCount(Integer.parseInt(style.animation_translate_repeat_count));
animation.setRepeatMode(style.animation_translate_repeat_ return animation;
}
public static Animation getRotate3dyAnimation(StyleSheet style, View view, View viewParent) {
Animation animation = null;
try {
float rotate3DCenterX, rotate3DCenterY;
try {
rotate3DCenterX = Float.parseFloat(style.animation_rotate_3dy_center_x.replaceAll("%", ""));
rotate3DCenterX = rotate3DCenterX / 100;
if (rotate3DCenterX < 0) rotate3DCenterX = 0;
if (rotate3DCenterX > 1) rotate3DCenterX = 1;
} catch (Exception e) {
rotate3DCenterX = (float) 0.5;
}
}
rotate3DCenterY = view.getHeight() * rotate3DCenterY;
float from = RexseeUtilities.getFloat(style.animation_rotate_3dy_from, 0f);
float to = RexseeUtilities.getFloat(style.animation_rotate_3dy_to, 90f);
float rotate3DDepthZ = RexseeUtilities.getFloat(style.animation_rotate_3dy_depth_z, 310.0f);
boolean reverse = (style.animation_rotate_3dy_reverse.equalsIgnoreCase("true")) ? true : false;
animation = new Rotate3dyAnimation(from, to, rotate3DCenterX, rotate3DCenterY, rotate3DDepthZ, reverse);
animation.setDuration(RexseeUtilities.getInt(style.animation_rotate_3dy_duration, 1000));
animation.setRepeatCount(RexseeUtilities.getInt(style.animation_rotate_3dy_repeat_count, 0));
animation.setRepeatMode(style.animation_rotate_3dy_repeat_mode.equalsIgnoreCase("normal") ? 1 : 2);
return animation;
}
public static Animation getRotate3dxAnimation(StyleSheet style, View view, View viewParent) {
Animation animation = null;
try {
float rotate3DCenterX, rotate3DCenterY;
try {
rotate3DCenterX = Float.parseFloat(style.animation_rotate_3dx_center_x.replaceAll("%", ""));
rotate3DCenterX = rotate3DCenterX / 100;
;
try {
rotate3DCenterY = Float.parseFloat(style.animation_rotate_3dx_center_y.replaceAll("%", ""));
rotate3DCenterY = rotate3DCenterY / 100;
if (rotate3DCenterY < 0) rotate3DCenterY = 0;
if (rotate3DCenterY > 1) rotate3DCenterY = 1;
} catch (Exception e) {
rotate3DCenterY = (float) 0.5;
}
rotate3DCenterY = view.getHeight() * rotate3DCenterY;
float from = RexseeUtilities.getFloat(style.animation_rotate_3dx_from, 0f);
float to = RexseeUtilities.getFloat(style.animation_rotate_3dx_to, 90f);
float rotate3DDepthZ = RexseeUtilities.getFloat(style.animation_rotate_3dx_depth_z, 310.0f);
boolean reverse = (style.animation_rotate_3dx_reverse.equalsIgnoreCase("true")) ? true : false;
animation = new Rotate3dxAnimation(from, to, rotate3DCenterX, rotate3DCenterY, rotate3DDepthZ, reverse);
animation.setDuration(RexseeUtilities.getInt(style.animation_rotate_3dx_duration, 1000));
animation.setRepeatCount(RexseeUtilities.getInt(style.animation_rotate_3dx_repeat_count, 0));
} catch (Exception e) {
}
return animation;
}
public static Animation getSkewAnimation(StyleSheet style, View view, View viewParent) {
Animation animation = null;
try {
float skewCenterX, skewCenterY;
try {
skewCenterX = Float.parseFloat(style.animation_skew_center_x.replaceAll("%", ""));
skewCenterX = skewCenterX / 100;
if (skewCenterX < 0) skewCenterX = 0;
if (skewCenterX > 1) skewCenterX = 1;
} catch (Exception e) {
skewCenterX = (float) 0.5;
}
skewCenterX = view.getWidth() * skewCenterX;
try {
skewCenterY = Float.parseFloat(style.animation_skew_center_y.replaceAll("%", ""));
skewCenterY = skewCenterY / 100;
if (skewCenterY < 0) skewCenterY = 0;
if (skewCenterY > 1) skewCenterY = 1;
} catch (Exception e) {
skewCenterY = (float) 0.5;
}
skewCenterY = view.getHeight() * skewCenterY;
float skewDepthZ = RexseeUtilities.getFloat(style.animation_skew_depth_z, 310.0f);
boolean reverse = (style.animation_skew_reverse.equalsIgnoreCase("true")) ? true : false;
animation = new SkewAnimation(fromX, toX, fromY, toY, skewCenterX, skewCenterY, skewDepthZ, reverse);
animation.setDuration(RexseeUtilities.getInt(style.animation_skew_duration, 1000));
animation.setRepeatCount(RexseeUtilities.getInt(style.animation_skew_repeat_count, 0));
animation.setRepeatMode(style.animation_skew_repeat_mode.equalsIgnoreCase("normal") ? 1 : 2);
animation.setStartOffset(RexseeUtilities.getLong(style.animation_skew_start_time, 0));
animation.setInterpolator(getInterPolator(style.animation_skew_interpolator));
animation.initialize(view.getWidth(), view.getHeight(), viewParent.getWidth(), viewParent.getHeight());
} catch (Exception e) {
}
return animation;
}
public static Interpolator getInterPolator(String name) {
if (name.equalsIgnoreCase("AccelerateDecelerate")) {
return new AccelerateDecelerateInterpolator();
} else if (name.equalsIgnoreCase("AnticipateOvershoot")) {
return new AnticipateOvershootInterpolator(1.0f, 1.5f);
} else if (name.equalsIgnoreCase("Overshoot")) {
return new OvershootInterpolator(1.0f);
} else if (name.equalsIgnoreCase("Bounce")) {
return new BounceInterpolator();
} else if (name.equalsIgnoreCase("Cycle")) {
return new CycleInterpolator(1);
} else if (name.equalsIgnoreCase("Linear")) {
return new LinearInterpolator();
} else {
return new LinearInterpolator();
}
}
} |
|