我已经动态创建了操作栏和选项卡。我已经为制表符片段定义了一个类,如下面的代码所示:
public static class TabFragmentClass extends Fragment
{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
try
{
linearLayout=new LinearLayout(sActiveContext);
linearLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
linearLayout.setOrientation(LinearLayout.VERTICAL);
CustomWebView webview=new CustomWebView(sActiveContext);
FrameLayout layout=webview.createwebview();
for (int i = 0; i < arrayList.size(); i++) {
if(sActionBar.getSelectedTab().getPosition()==i)
{
webview.initwebview(arrayList.get(i));
mWebViewList.add(i, webview);
break;
}
}
linearLayout.addView(layout);
linearLayout.setId(sActionBar.getSelectedTab().getPosition());
return linearLayout;
}
catch(Exception error)
{
System.out.println(error.getMessage());
return null;
}
}
}
url是本地html文件,具有自己的本机java方法调用。如果我第一次选择动作栏标签,这是工作良好。即本机java方法被正确调用并且回调成功。如果我第二次访问选项卡,片段只显示,选项卡内容不重新创建。我需要标签内容的功能,而不是每次创建。但是我正面临原生方法未定义错误的问题。也就是说,根本不调用本机方法。我如何解决这个问题?
把你的fragment改成this,
public static class TabFragmentClass extends Fragment
{
private static CustomWebView webview=null;
private static boolean isInitialized=false;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
try
{
linearLayout=new LinearLayout(sActiveContext);
linearLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
linearLayout.setOrientation(LinearLayout.VERTICAL);
webview=new CustomWebView(sActiveContext);
FrameLayout layout=webview.createwebview();
onLoadWebview();
linearLayout.addView(layout);
linearLayout.setId(sActionBar.getSelectedTab().getPosition());
return linearLayout;
}
catch(Exception error)
{
System.out.println(error.getMessage());
return null;
}
}
@Override
public void onActivityCreated()
{
super.onActivityCreated();
isInitialized=true;
}
@Override
public void onResume()
{
if(isInitialized)
onLoadWebView();
}
public void onLoadWebview()
{
for (int i = 0; i < arrayList.size(); i++) {
if(sActionBar.getSelectedTab().getPosition()==i)
{
webview.initwebview(arrayList.get(i));
mWebViewList.add(i, webview);
break;
}
}
}
}
onCreateView只会在Activity创建后被创建一次你可以把你的方法放在onResume()或refresh web中你可以在这里看到Fragment的生活圈