activity配置文件：activity_main.xml
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
android:id="@+id/et_address"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:text="http://www.baidu.com" />
android:id="@+id/search"
android:layout_width="101dp"
android:layout_height="match_parent"
android:onClick="click"
android:text="Search" />
android:id="@+id/myWebView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.08" />
MainActivity.java
packagecom.example.mybrowser;importandroid.os.Bundle;importandroid.app.Activity;importandroid.view.Menu;importandroid.view.MenuItem;importandroid.view.View;importandroid.view.Window;importandroid.webkit.WebSettings;importandroid.webkit.WebView;importandroid.webkit.WebViewClient;importandroid.widget.EditText;public class MainActivity extendsActivity {private static final String URL ="http://www.baidu.com";privateEditText et_address;privateWebView myWebView;
@Overrideprotected voidonCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
et_address=(EditText) findViewById(R.id.et_address);
myWebView=(WebView) findViewById(R.id.myWebView);
WebSettings mysettings=myWebView.getSettings();
mysettings.setSupportZoom(true);
mysettings.setBuiltInZoomControls(true);
myWebView.setWebViewClient(newWebViewClient());
}
@Overridepublic booleanonCreateOptionsMenu(Menu menu) {//Inflate the menu; this adds items to the action bar if it is present.//getMenuInflater().inflate(R.menu.main, menu);
menu.addSubMenu(0,0,0,"刷新");
menu.addSubMenu(0,0,1,"前进");
menu.addSubMenu(0,0,2,"后退");return true;
}
@Overridepublic booleanonOptionsItemSelected(MenuItem item) {//TODO Auto-generated method stub
switch(item.getOrder()) {case 0:
myWebView.reload();break;case 1:if(myWebView.canGoBack()){
myWebView.goBack();
}else{
}break;case 2:if(myWebView.canGoForward()){
myWebView.goForward();
}break;
}return true;
}public voidclick(View v){
String url=et_address .getText().toString().trim();if(url == null ||url.isEmpty()){
url=URL;
}
myWebView.loadUrl(url);
}
}
记得清单配置文件中加入访问网络的权限：
效果图如下：
原文：http://www.cnblogs.com/sz-xxc-1234/p/4299010.html
