[WEEX][Android] NestInstance Support Downgrade To Full Page Root Instance

android/sdk/src/main/java/com/taobao/weex/WXSDKInstance.java

@@ -182,6 +182,8 @@ public class WXSDKInstance implements IWXActivityStateListener,View.OnLayoutChan
 
   private List<String> mLayerOverFlowListeners;
 
+  private WXSDKInstance mParentInstance;
+
   public List<String> getLayerOverFlowListeners() {
     return mLayerOverFlowListeners;
   }
@@ -1499,6 +1501,14 @@ public void run() {
       mWXPerformance.screenRenderTime = System.currentTimeMillis() - mRenderStartTime;
   }
 
+  public WXSDKInstance getParentInstance() {
+    return mParentInstance;
+  }
+
+  public void setParentInstance(WXSDKInstance mParentInstance) {
+    this.mParentInstance = mParentInstance;
+  }
+
   private void destroyView(View rootView) {
     try {
       if (rootView instanceof ViewGroup) {
@@ -1522,6 +1532,9 @@ private void destroyView(View rootView) {
 
   public synchronized void destroy() {
     if(!isDestroy()) {
+      if(mParentInstance != null){
+         mParentInstance = null;
+      }
       mApmForInstance.onEnd();
       if(mRendered) {
         WXSDKManager.getInstance().destroyInstance(mInstanceId);

android/sdk/src/main/java/com/taobao/weex/common/WXInstanceWrap.java

@@ -18,6 +18,7 @@
  */
 package com.taobao.weex.common;
 
+import com.taobao.weex.WXSDKInstance;
 import com.taobao.weex.annotation.JSMethod;
 
 /**
@@ -28,7 +29,13 @@ public class WXInstanceWrap extends WXModule {
   @JSMethod
   public void error(String type, String code, String info) {
     if (mWXSDKInstance != null) {
-      mWXSDKInstance.onRenderError(type + "|" + code, info);
+      WXSDKInstance root = mWXSDKInstance;
+      if(info != null && info.contains("downgrade_to_root")){
+        while (root.getParentInstance() != null){
+          root = root.getParentInstance();
+        }
+      }
+      root.onRenderError(type + "|" + code, info);
     }
   }
 }

android/sdk/src/main/java/com/taobao/weex/ui/component/WXEmbed.java

@@ -338,7 +338,7 @@ private static final int getLevel(WXEmbed embed){
 
   private WXSDKInstance createInstance() {
     WXSDKInstance sdkInstance = getInstance().createNestedInstance(this);
-
+    sdkInstance.setParentInstance(getInstance());
     boolean needsAdd = !getAttrs().containsKey("disableInstanceVisibleListener");
     if(needsAdd){ //prevent switch off fire viewappear event twice
         getInstance().addOnInstanceVisibleListener(this);