webview是常用的组件，特别是当前h5这么流行的情况下，本文介绍webview在项目中的常规用法。一般是webview加载的过程前会对当前网络做判断，没有网络的情况下给个提示。有网络的情况下配一个progressbar显示当前进度，好的，上代码。
第一步：设计页面
<?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="vertical" >
<include layout="@layout/layout_head" />
<ProgressBar
android:id="@+id/pb"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="fill_parent"
android:layout_height="2dip"
android:indeterminateOnly="false"
android:max="100"
android:progressDrawable="@drawable/progress_bar_states_new" >
</ProgressBar>
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>第二步：编写activity
/**
*
*/
package com.android.inputmethod.latin.activity;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.android.inputmethod.latin.R;
import com.dotc.util.NetworkUtil;
/**
* @author figo
*
*/
public class CommonProblemActivity extends Activity {
private WebView wb;
ProgressBar pb;
private LinearLayout mLayoutBack;
private TextView mTvTitle;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_common_problem);
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
initView();
}
private void initView() {
try {
pb = (ProgressBar) findViewById(R.id.pb);
pb.setMax(100);
mLayoutBack = (LinearLayout) findViewById(R.id.layout_back);
mLayoutBack.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
finish();
}
});
mTvTitle = (TextView) findViewById(R.id.txt_title);
mTvTitle.setText(getString(R.string.lbl_common_problem));
//这样写将直接跳转到浏览器
// wb.loadUrl("http://www.baidu.com");
//使用WebViewClient web页面在当前activity中显示
wb = (WebView) findViewById(R.id.webView);
wb.getSettings().setJavaScriptEnabled(true);
wb.getSettings().setSupportZoom(true);
wb.getSettings().setBuiltInZoomControls(true);
wb.setWebChromeClient(new WebViewClient() );
if(!NetworkUtil.isNetworkUseful(CommonProblemActivity.this))
{
String customHtml = "<html><body><font color='red'>current network useless!</font></body></html>";
wb.loadData(customHtml, "text/html", "UTF-8");
return;
}
wb.loadUrl("http://www.baidu.com");
} catch (Exception e) {
if (e != null) {
e.printStackTrace();
}
}
}
private class WebViewClient extends WebChromeClient {
@Override
public void onProgressChanged(WebView view, int newProgress) {
pb.setProgress(newProgress);
if(newProgress==100){
pb.setVisibility(View.GONE);
}
super.onProgressChanged(view, newProgress);
}
}
}
原文地址：http://blog.csdn.net/figo0423/article/details/46522867
