任何人都可以帮助我弄清楚如何使用片段 Android 在同一屏幕上打开两个 webview,每个 webview 必须显示某个网页,例如:1-google、2、yahoo。
我已经尝试了太多的教程和示例。没有什么对我有用... :(
对我来说,与我的想法相冲突的主要问题是在片段类中写什么来打开 webView 以及在运行整个应用程序的主要活动中写什么。
在此先感谢您的帮助.. :)
这是我的代码,它在一个屏幕的纵向模式下运行良好,在横向模式下崩溃:
package com.example.androidwebviewfragment;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class Fragment1 extends Fragment {
WebView myWebView;
final static String myBlogAddr = "http://android-er.blogspot.com";
String myUrl;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.layout_webfragment,container,false);
myWebView = (WebView)view.findViewById(R.id.mywebview);
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.setWebViewClient(new MyWebViewClient());
if(myUrl == null){
myUrl = myBlogAddr;
}
myWebView.loadUrl(myUrl);
return view;
}
private class MyWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
myUrl = url;
view.loadUrl(url);
return true;
}
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance(true);
}
}
这是第二个片段:
package com.example.androidwebviewfragment;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class Fragment2 extends Fragment {
WebView myWebView;
final static String myBlogAddr = "http://android-er.blogspot.com";
String myUrl;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate
(R.layout.layout_webfragment2,container,false);
myWebView = (WebView)view.findViewById(R.id.mywebview);
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.setWebViewClient(new MyWebViewClient());
if(myUrl == null){
myUrl = myBlogAddr;
}
myWebView.loadUrl(myUrl);
return view;
}
private class MyWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
myUrl = url;
view.loadUrl(url);
return true;
}
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance(true);
}
}
这里是主要活动:包 com.example.androidwebviewfragment;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
/* (non-Javadoc)
* @see android.app.Activity#onCreate(android.os.Bundle)
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
the .xml files are :
1-片段 1:
<WebView
android:id="@+id/mywebview"
android:layout_height="match_parent"
android:layout_width="match_parent" />
</LinearLayout>
2片段2:
</LinearLayout>
3-主要xml布局:
<fragment
android:name="com.example.androidwebviewfragment.Fragment1"
android:id="@+id/myweb_fragment1"
android:layout_height="match_parent"
android:layout_width="match_parent" />
<fragment
android:name="com.example.androidwebviewfragment.Fragment2"
android:id="@+id/myweb_fragment2"
android:layout_height="match_parent"
android:layout_width="match_parent" />
</RelativeLayout>
这是 layout-land 文件夹中的 main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<fragment
android:name="com.example.androidwebviewfragment.Fragment1"
android:id="@+id/myweb_fragment"
android:layout_height="match_parent"
android:layout_width="match_parent" />
<fragment
android:name="com.example.androidwebviewfragment.Fragment2"
android:id="@+id/myweb_fragment"
android:layout_height="match_parent"
android:layout_width="match_parent" />
</LinearLayout>
来自日志的景观模式错误:
java.lang.RuntimeException:
Unable to start activity ComponentInfo{com.example.androidwebviewfragment
/com.example.androidwebviewfragment.MainActivity}
:android.view.InflateException: Binary XML file line #12: Error inflating class fragment