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

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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;

import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.FrameLayout;


import java.lang.ref.WeakReference;

/**
 * Created by sospartan on 08/10/2016.
 */

public class RenderContainer extends FrameLayout {
  private WeakReference<WXSDKInstance> mSDKInstance;

  public RenderContainer(Context context) {
    super(context);
  }

  public RenderContainer(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public RenderContainer(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
  }

  @TargetApi(Build.VERSION_CODES.LOLLIPOP)
  public RenderContainer(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
    super(context, attrs, defStyleAttr, defStyleRes);
  }

  public void setSDKInstance(WXSDKInstance instance) {
    mSDKInstance = new WeakReference<>(instance);
  }

  @Override
  protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    super.onSizeChanged(w, h, oldw, oldh);
    WXSDKInstance instance;
    if (mSDKInstance != null && (instance = mSDKInstance.get()) != null) {
      //re-render instance
      instance.setSize(w, h);
    }
  }
}