如果不使用系统自带的TitleBar(即Activity被设置@android:style/Theme.NoTitleBar),那就需要自己来写进度条了,这里封装了一个自定义控件和加载网页的公共Activity,方便使用。
正文
一、截图
二、自定义控件
复制代码
/**
* 带进度条的WebView
* @author 农民伯伯
* @see http://www.cnblogs.com/over140/archive/2013/03/07/2947721.html
*
*/
@SuppressWarnings("deprecation")
public class ProgressWebView extends WebView {
private ProgressBar progressbar;
public ProgressWebView(Context context, AttributeSet attrs) {
super(context, attrs);
progressbar = new ProgressBar(context, null, android.R.attr.progressBarStyleHorizontal);
progressbar.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, 3, 0, 0));
addView(progressbar);
// setWebViewClient(new WebViewClient(){});
setWebChromeClient(new WebChromeClient());
}
public class WebChromeClient extends android.webkit.WebChromeClient {
@Override
public void onProgressChanged(WebView view, int newProgress) {
if (newProgress == 100) {
progressbar.setVisibility(GONE);
} else {
if (progressbar.getVisibility() == GONE)
progressbar.setVisibility(VISIBLE);
progressbar.setProgress(newProgress);
}
super.onProgressChanged(view, newProgress);
}
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
LayoutParams lp = (LayoutParams) progressbar.getLayoutParams();
lp.x = l;
lp.y = t;
progressbar.setLayoutParams(lp);
super.onScrollChanged(l, t, oldl, oldt);
}
}
复制代码
三、加载网页的公共Activity
复制代码
/**
* 加载网页的Activity
*
* @author 农民伯伯
* @see http://www.cnblogs.com/over140/archive/2013/03/07/2947721.html
*
*/
public class WebActivity extends BaseActivity {
private ProgressWebView webview;
private String url;
private String name;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.commom_web);
// ~~~ 获取参数
url = getIntent().getStringExtra("url");
name = getIntent().getStringExtra("name");
// ~~~ 绑定控件
webview = (ProgressWebView) findViewById(R.id.webview);
// ~~~ 设置数据
titleText.setText(name);
webview.getSettings().setJavaScriptEnabled(true);
webview.setDownloadListener(new DownloadListener() {
@Override
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
if (url != null && url.startsWith("http://"))
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
}
});
webview.loadUrl(url);
}
}
复制代码
commom_web.xml
复制代码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<include layout="@layout/include_title" />
<com.nmbb.ui.widget.ProgressWebView
android:id="@ id/webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
复制代码
四、补充说明
1、还可以再优化一下,在标题栏加一个刷新按钮。
2、如果加载的页面有需要下载文件,需要设置setDownloadListener方法,根据项目实际需求定制。
3、自定义控件是在转载的,忘记出处,感谢~~