项目中用到WebView加上进度条放在顶部,让用户知道加载进度情况,可以提高用户体验: 效果: 布局: RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientat
          项目中用到WebView加上进度条放在顶部,让用户知道加载进度情况,可以提高用户体验:
效果:

布局:
<RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <WebView android:id="@+id/webView" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@+id/toolbar_container" /> <ProgressBar android:id="@+id/progressBar" style="@style/crowd_item_progressBar" android:layout_width="match_parent" android:layout_height="3dp" android:layout_below="@+id/toolbar_container" android:background="@drawable/crowd_progressbar_unselect" /> </RelativeLayout>
进度条样式:
<style name="crowd_item_progressBar"> <item name="android:indeterminateOnly">false</item> <item name="android:progressDrawable">@drawable/crowd_progressbar_background</item> <item name="android:minHeight">10dp</item> <item name="android:maxHeight">10dp</item> </style>
进度图片:
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
 <item
  android:id="@android:id/progress" >
  <clip>
   <shape>
    <solid android:color="@color/selected"/>
    <!--<corners android:radius="1.5dp"/>-->
   </shape>
  </clip>
 </item>
</layer-list>
代码:
public class WebChromeClient extends android.webkit.WebChromeClient {
  @Override
  public void onProgressChanged(WebView view, int newProgress) {
   if (newProgress == 100) {
    mProgressBar.setVisibility(GONE);
   } else {
    if (mProgressBar.getVisibility() == GONE)
     mProgressBar.setVisibility(VISIBLE);
    mProgressBar.setProgress(newProgress);
   }
   super.onProgressChanged(view, newProgress);
  }
 }
 @Override
 protected void onScrollChanged(int l, int t, int oldl, int oldt) {
  LayoutParams lp = (LayoutParams) mProgressBar.getLayoutParams();
  lp.x = l;
  lp.y = t;
  mProgressBar.setLayoutParams(lp);
  super.onScrollChanged(l, t, oldl, oldt);
 }
}
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持自由互联。
