安卓开发之带进度条的webview

ps：来源找不到了，作者如果看到可以联系我

import android.content.Context;
import android.util.AttributeSet;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;



/**
 * 带进度条的WebView
 *
 */
@SuppressWarnings("deprecation")
public class ProgressWebView extends WebView {

    private final Integer windowWidth;
    private RelativeLayout relativeLayout;
    private TextView textView;
    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(ViewGroup.LayoutParams.MATCH_PARENT,100,0,-45));
        addView(progressbar);

        setWebChromeClient(new WebChromeClient());
        windowWidth = SystemInfoUtils.getInstance(getContext()).getWindowWidth();
    }

    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);
//    }
}