Question

如何在附加到视图的布局中访问Web视图以加载页面。

我尝试了一些可能可行的方法，包括

void loadWeb() {
uiH.post(new Runnable() {
          @Override
          public void run() {
              LoadingWeb  = (WebView) findViewById(R.id.web);
              LoadingWeb.setWebChromeClient(new WebChromeClient());
              LoadingWeb.getSettings().setJavaScriptEnabled(true);
              LoadingWeb.loadUrl("file:///android_asset/www/page.html");
          }
      }); }

但是不起作用

java.lang.NullPointerException：尝试调用虚拟方法空对象上的'boolean android.os.Handler.post（java.lang.Runnable）' 参考

如何将页面加载到波纹管附件视图中

final IntentFilter theFilter = new IntentFilter();
theFilter.addAction(myDrawerReceiver);
this.myDrawingReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        final Bundle bundle = intent.getExtras();
        try{
            WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                    WindowManager.LayoutParams.FILL_PARENT,
                    WindowManager.LayoutParams.FILL_PARENT,
                    WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
                    WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
                            WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
                    PixelFormat.TRANSLUCENT);
            params.gravity = Gravity.FILL;
            WindowManager wm = (WindowManager) app.appContext.getSystemService(
                    Context.WINDOW_SERVICE
            );
            if(bundle.get("draw").equals("draw")){
                loadWeb();
                wm.addView(myWeb, params);
            }
            else if(bundle.get("draw").equals("undraw")){
                wm.removeView(myWeb);
            }
        }catch (Exception e){
            Log.d(ussd.TAG,e.toString());
        }
    }
};
this.registerReceiver(this.myDrawingReceiver, theFilter);

webview web 位于布局myWeb

谢谢

访问窗口管理器的儿童附加视图

0 个答案: