Webview无法正常工作 [英] Webview not working in fragment
本文介绍了Webview无法正常工作的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我在选项卡活动片段中有一个webview.但是,我的代码只产生一个空白页.该代码可以在常规活动中正常工作.
I have a webview in a tab activity fragment. However, my code only produces a blank page. The code does work in regular activities.
Main2Activity.java(标签活动)
Main2Activity.java (Tab activity)
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (getArguments().getInt(ARG_SECTION_NUMBER) == 1) {
View rootView = inflater.inflate(R.layout.fragment_subpage1, container, false);
return rootView;
} else if (getArguments().getInt(ARG_SECTION_NUMBER) == 2) {
View rootView = inflater.inflate(R.layout.fragment_subpage2, container, false);
return rootView;
} else {
View rootView = inflater.inflate(R.layout.fragment_subpage3, container, false);
return rootView;
}
}
}
subpage2.java
subpage2.java
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this.getActivity());
final WebView browser = (WebView) getView().findViewById(R.id.webView);
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_subpage1, container, false);
browser.getSettings().setJavaScriptEnabled(true);
browser.setWebViewClient(new WebViewClient() {
{
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
browser.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
return false;
}
});
} else {
browser.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
});
}
}
});
browser.loadUrl("www.example.com");
return v;
}
和fragment_subclass.xml:
And fragment_subclass.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="layout.subpage2">
<WebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/webView" />
推荐答案
像这样初始化Webview:
Initialize webview like this:
View v = inflater.inflate(R.layout.fragment_subpage1, container, false);
final WebView browser = (WebView) v.findViewById(R.id.webView);
尝试一下:在网址前面添加http
try this: add http
at front of the url
browser.getSettings().setJavaScriptEnabled(true);
browser.loadUrl("http://www.example.com"); //add http at front
browser.getSettings().setUseWideViewPort(true);
browser.getSettings().setLoadWithOverviewMode(true);
您必须在清单中添加权限:
In manifest you have to add permission:
<uses-permission android:name="android.permission.INTERNET" />
这篇关于Webview无法正常工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文