在cocos2d-x界面中嵌入Android的WebView

在Cocos2dxActivity.java中,

(1) 增加函数onCreateLayout，

 

    public LinearLayout onCreateLayout(Cocos2dxGLSurfaceView surfaceView) {
        LinearLayout layout = new LinearLayout(this);
        layout.setOrientation(LinearLayout.VERTICAL);
        layout.addView(surfaceView);
        return layout;
    }

(2) 在 this.mGLSurfaceView = this.onCreateView() 下面增加这一行：

 

 

 LinearLayout contentLayout = this.onCreateLayout(mGLSurfaceView);

(3) 应用的Activity文件实现如下，

 

 

 public class HelloCpp extends Cocos2dxActivity{
     static HelloCpp sHelloCpp = null;
     LinearLayout mContentLayout;
     Cocos2dxGLSurfaceView mGlSurfaceView;
     LinearLayout mWebLayout;
     WebView mWebView;
     Button mBackButton;

     protected void onCreate(Bundle savedInstanceState){
         super.onCreate(savedInstanceState);
     }

     public LinearLayout onCreateLayout(Cocos2dxGLSurfaceView surfaceView) {
         mGlSurfaceView = surfaceView;
         sHelloCpp = this;

         mContentLayout = new LinearLayout(this);
         mContentLayout.setOrientation(LinearLayout.VERTICAL);
         mContentLayout.addView(surfaceView);

         mWebLayout = new LinearLayout(this);
         mWebLayout.setOrientation(LinearLayout.VERTICAL);

         return mContentLayout;
     }

     public Cocos2dxGLSurfaceView onCreateView() {
         Cocos2dxGLSurfaceView glSurfaceView = new Cocos2dxGLSurfaceView(this);
         // TestCpp should create stencil buffer
         glSurfaceView.setEGLConfigChooser(5, 6, 5, 0, 16, 8);

         return glSurfaceView;
     }

     //此函数提供给jni调用，返回自身类的对象
     public static HelloCpp getInstance() {//返回实例
         return sHelloCpp;
     }

     public void openWebView() {
         this.runOnUiThread(new Runnable() {//在主线程里添加别的控件
             public void run() {
                 //初始化webView
                 mWebView = new WebView(HelloCpp.this);
                 //设置webView能够执行javascript脚本
                 mWebView.getSettings().setJavaScriptEnabled(true);
                 //载入URL
                 mWebView.loadUrl("file:///android_asset/index.html");
                 //使页面获得焦点
                 //mWebView.requestFocus();
                 //如果页面中链接，如果希望点击链接继续在当前browser中响应
                 mWebView.setWebViewClient(new WebViewClient(){
                     public boolean shouldOverrideUrlLoading(WebView view, String url) {
                         if(url.indexOf("tel:")<0){
                             view.loadUrl(url);
                         }
                         return true;
                     }
                 });

                 /*初始化返回按钮*/
                 mBackButton = new Button(HelloCpp.this);
                 mBackButton.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
                 mBackButton.setText("Close");
                 mBackButton.setTextColor(Color.argb(255, 255, 218, 154));
                 mBackButton.setTextSize(14);
                 mBackButton.setOnClickListener(new OnClickListener() {
                     public void onClick(View v) {
                         removeWebView();
                         mGlSurfaceView.setVisibility(View.VISIBLE);
                     }
                 });

                 //把webView加入到线性布局
                 mGlSurfaceView.setVisibility(View.GONE);
                 mWebLayout.addView(mBackButton);
                 mWebLayout.addView(mWebView);
                 mContentLayout.addView(mWebLayout);
             }
         });
     }
     //移除webView  把刚才加的所有控件都删掉
     public void removeWebView() {
         mContentLayout.removeView(mWebLayout);
         mWebLayout.destroyDrawingCache();

         mWebLayout.removeView(mWebView);
         mWebView.destroy();

         mWebLayout.removeView(mBackButton);
         mBackButton.destroyDrawingCache();
     }

     public boolean onKeyDown(int keyCoder,KeyEvent event) //重载函数，android手机实体返回键回调函数
     {
          if(mWebView.canGoBack() && keyCoder == KeyEvent.KEYCODE_BACK){//如果网页能回退则后退，如果不能后退移除WebView
              mWebView.goBack();
          }else{
              removeWebView();
              mGlSurfaceView.setVisibility(View.VISIBLE);
          }
          return false;
     }

     static {
         System.loadLibrary("game");
     }

从cocos2d-x的界面中打开WebView的代码：

 

 #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
 //getStaticMethodInfo，判断Java静态函数是否存在，并且把信息保存到minfo里
 //参数1：JniMethodInfo
 //参数2：Java类包名+类名
 //参数3：Java函数名称
 //参数4：函数参数类型和返回值类型，这里的返回值类型是HelloCpp类的对象。写法：L+包名+; 其他的类型请看上面的“JNI详细教程”

         JniMethodInfo minfo;
         jobject jobj;
         bool isHave = JniHelper::getStaticMethodInfo(minfo, "cn/livelog/popdiamond/HelloCpp","getInstance","()Lcn/livelog/popdiamond/HelloCpp;");
         if (isHave)
         {
             //调用Java静态函数，取得对象。
             jobj = minfo.env->CallStaticObjectMethod(minfo.classID, minfo.methodID);
             if (jobj != NULL)
             {
                 isHave = JniHelper::getMethodInfo(minfo,"cn/livelog/popdiamond/HelloCpp","openWebView","()V");
                 if (isHave)
                 {
                     //调用java非静态函数, 参数1：Java对象，上面已经取得   参数2：方法ID
                     minfo.env->CallVoidMethod(jobj, minfo.methodID);
                 }
             }
         }
 #endif