Java tutorial
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We also recommend that a * file or class name and description of purpose be included on the * same "printed page" as the copyright notice for easier * identification within third-party archives. * * Copyright 2016 Alibaba Group * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.taobao.weex.ui.animation; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.animation.ArgbEvaluator; import android.animation.ObjectAnimator; import android.animation.PropertyValuesHolder; import android.graphics.drawable.ColorDrawable; import android.os.Build; import android.os.Message; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.view.animation.PathInterpolatorCompat; import android.text.TextUtils; import android.util.Pair; import android.view.View; import android.view.ViewGroup; import android.view.animation.AccelerateDecelerateInterpolator; import android.view.animation.AccelerateInterpolator; import android.view.animation.DecelerateInterpolator; import android.view.animation.Interpolator; import android.view.animation.LinearInterpolator; import com.taobao.weex.WXSDKInstance; import com.taobao.weex.WXSDKManager; import com.taobao.weex.annotation.JSMethod; import com.taobao.weex.common.WXModule; import com.taobao.weex.dom.WXDomHandler; import com.taobao.weex.dom.WXDomTask; import com.taobao.weex.ui.component.WXComponent; import com.taobao.weex.ui.view.border.BorderDrawable; import com.taobao.weex.utils.SingleFunctionParser; import com.taobao.weex.utils.WXLogUtils; import com.taobao.weex.utils.WXResourceUtils; import com.taobao.weex.utils.WXUtils; import com.taobao.weex.utils.WXViewUtils; import java.util.ArrayList; import java.util.HashMap; import java.util.List; public class WXAnimationModule extends WXModule { @JSMethod public void transition(@Nullable String ref, @Nullable String animation, @Nullable String callBack) { if (!TextUtils.isEmpty(ref) && !TextUtils.isEmpty(animation)) { Message msg = Message.obtain(); WXDomTask task = new WXDomTask(); task.instanceId = mWXSDKInstance.getInstanceId(); task.args = new ArrayList<>(); task.args.add(ref); task.args.add(animation); task.args.add(callBack); msg.what = WXDomHandler.MsgType.WX_ANIMATION; msg.obj = task; //Due to animation module rely on the result of the css-layout and the batch mechanism of //css-layout, the animation.transition must be delayed the batch time. WXSDKManager.getInstance().getWXDomManager().sendMessageDelayed(msg, WXDomHandler.DELAY_TIME); } } public static void startAnimation(WXSDKInstance mWXSDKInstance, WXComponent component, @NonNull WXAnimationBean animationBean, @Nullable String callback) { if (component == null) { return; } if (component.getHostView() == null) { AnimationHolder holder = new AnimationHolder(animationBean, callback); component.postAnimation(holder); return; } try { Animator animator = createAnimator(animationBean, component.getHostView(), mWXSDKInstance.getViewPortWidth()); if (animator != null) { Animator.AnimatorListener animatorCallback = createAnimatorListener(mWXSDKInstance, callback); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2) { component.getHostView().setLayerType(View.LAYER_TYPE_HARDWARE, null); } Interpolator interpolator = createTimeInterpolator(animationBean); if (animatorCallback != null) { animator.addListener(animatorCallback); } if (interpolator != null) { animator.setInterpolator(interpolator); } animator.setDuration(animationBean.duration); animator.start(); } } catch (RuntimeException e) { e.printStackTrace(); WXLogUtils.e("", e); } } private static @Nullable ObjectAnimator createAnimator(@NonNull WXAnimationBean animation, final View target, final int viewPortWidth) { if (target == null) { return null; } WXAnimationBean.Style style = animation.styles; if (style != null) { ObjectAnimator animator; List<PropertyValuesHolder> holders = style.getHolders(); if (!TextUtils.isEmpty(style.backgroundColor)) { BorderDrawable borderDrawable; if ((borderDrawable = WXViewUtils.getBorderDrawable(target)) != null) { holders.add(PropertyValuesHolder.ofObject(WXAnimationBean.Style.BACKGROUND_COLOR, new ArgbEvaluator(), borderDrawable.getColor(), WXResourceUtils.getColor(style.backgroundColor))); } else if (target.getBackground() instanceof ColorDrawable) { holders.add(PropertyValuesHolder.ofObject(WXAnimationBean.Style.BACKGROUND_COLOR, new ArgbEvaluator(), ((ColorDrawable) target.getBackground()).getColor(), WXResourceUtils.getColor(style.backgroundColor))); } } if (style.getPivot() != null) { Pair<Float, Float> pair = style.getPivot(); target.setPivotX(pair.first); target.setPivotY(pair.second); } animator = ObjectAnimator.ofPropertyValuesHolder(target, holders.toArray(new PropertyValuesHolder[holders.size()])); animator.setStartDelay(animation.delay); if (target.getLayoutParams() != null && (!TextUtils.isEmpty(style.width) || !TextUtils.isEmpty(style.height))) { DimensionUpdateListener listener = new DimensionUpdateListener(target); ViewGroup.LayoutParams layoutParams = target.getLayoutParams(); if (!TextUtils.isEmpty(style.width)) { listener.setWidth(layoutParams.width, (int) WXViewUtils.getRealPxByWidth(WXUtils.getFloat(style.width), viewPortWidth)); } if (!TextUtils.isEmpty(style.height)) { listener.setHeight(layoutParams.height, (int) WXViewUtils.getRealPxByWidth(WXUtils.getFloat(style.height), viewPortWidth)); } animator.addUpdateListener(listener); } return animator; } else { return null; } } public static @Nullable Animator.AnimatorListener createAnimatorListener(final WXSDKInstance mWXSDKInstance, @Nullable final String callBack) { if (!TextUtils.isEmpty(callBack)) { return new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { if (mWXSDKInstance == null) { WXLogUtils.e("WXRenderStatement-onAnimationEnd mWXSDKInstance == null NPE"); } else { WXSDKManager.getInstance().callback(mWXSDKInstance.getInstanceId(), callBack, new HashMap<String, Object>()); } } }; } else { return null; } } private static @Nullable Interpolator createTimeInterpolator(@NonNull WXAnimationBean animation) { String interpolator = animation.timingFunction; if (!TextUtils.isEmpty(interpolator)) { switch (interpolator) { case WXAnimationBean.EASE_IN: return new AccelerateInterpolator(); case WXAnimationBean.EASE_OUT: return new DecelerateInterpolator(); case WXAnimationBean.EASE_IN_OUT: return new AccelerateDecelerateInterpolator(); case WXAnimationBean.LINEAR: return new LinearInterpolator(); default: //Parse cubic-bezier try { SingleFunctionParser<Float> parser = new SingleFunctionParser<>(animation.timingFunction, new SingleFunctionParser.FlatMapper<Float>() { @Override public Float map(String raw) { return Float.parseFloat(raw); } }); List<Float> params = parser.parse(WXAnimationBean.CUBIC_BEZIER); if (params != null && params.size() == WXAnimationBean.NUM_CUBIC_PARAM) { return PathInterpolatorCompat.create(params.get(0), params.get(1), params.get(2), params.get(3)); } else { return null; } } catch (RuntimeException e) { return null; } } } return null; } //add by moxun on 12/26/2016 public static class AnimationHolder { private WXAnimationBean wxAnimationBean; private String callback; public void execute(WXSDKInstance mInstance, WXComponent component) { WXAnimationModule.startAnimation(mInstance, component, wxAnimationBean, callback); } private AnimationHolder(WXAnimationBean wxAnimationBean, String callback) { this.wxAnimationBean = wxAnimationBean; this.callback = callback; } } }