带有进度条的WebView

最新推荐文章于 2021-05-26 19:09:31 发布

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最新推荐文章于 2021-05-26 19:09:31 发布

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文章标签： android webview 进度条

本文介绍了一种在WebView中加入水平进度条的方法，通过自定义ProgressWebView类并继承自WebView，利用WebChromeClient监听页面加载进度来更新进度条状态。

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转载地址：https://www.cnblogs.com/over140/archive/2013/03/07/2947721.html

/**
* 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);
}
}