推荐阅读：android webview添加网页加载进度条实例详解
先给大家展示下效果图：这个效果图大家一看就懂，在生活经常见到
1.wevbview_progressbar.xml
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<layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <!-- 背景 --> <item android:id="@android:id/background"> <shape> <solid android:color="@android:color/transparent" /> </shape> </item> <!-- 进度条 --> <item android:id="@android:id/progress"> <clip> <shape> <solid android:color="@android:color/holo_green_light" /> </shape> </clip> </item></layer-list> |
2.progresswebview.java
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@suppresswarnings("deprecation")public class progresswebview extends webview { private final static string tag = progresswebview.class.getsimplename(); private progressbar progressbar; private context context; public progresswebview(context context, attributeset attrs) { super(context, attrs); this.context = context; progressbar = new progressbar(context, null, android.r.attr.progressbarstylehorizontal); progressbar.setlayoutparams(new absolutelayout.layoutparams(absolutelayout.layoutparams.match_parent, 3, 0, 0)); progressbar.setprogressdrawable(getresources().getdrawable(r.drawable.wevbview_progressbar)); addview(progressbar); setwebchromeclient(new webchromeclient()); } public class webchromeclient extends android.webkit.webchromeclient { @overridepublic void onprogresschanged(webview view, int newprogress) { log.d(tag, "newprogress" + newprogress); if (newprogress == 100) { progressbar.setvisibility(gone); } else{ if (progressbar.getvisibility() == gone) progressbar.setvisibility(visible); progressbar.setprogress(newprogress); } super.onprogresschanged(view, newprogress); } // 处理javascript中的console.log @overridepublic boolean onconsolemessage(consolemessage cm){ android.util.log.d(tag, "webview console " + cm.linenumber() + " of " + cm.sourceid() + " : " + cm.message()); return true; } // 处理javascript中的alert() @overridepublic boolean onjsalert(webview view, string url, string message, jsresult result) { result.cancel(); return true; } } @overrideprotected 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); }} |
3.mainactivity.java
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progresswebview webview = (progresswebview)findviewbyid(r.id.them_webview);webview.setdownloadlistener(new downloadlistener(){ @overridepublic 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("http://www.cnblogs.com/hubli/p/4835549.html"); |
4.activity_main.xml
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<com.etoury.webviewprogress.progresswebview android:id="@+id/them_webview"android:layout_width="match_parent"android:layout_height="match_parent" /> |
通过以上代码内容给大家介绍了android webview线性进度条的相关知识，希望对大家有所帮助。
