Android progress bar usage

Android progress bar 1. Implementation Effect

 

 

2. layout code

Write a my_browser.xml file to store the webview.

<?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" >        <WebView        android:id="@+id/webView"        android:layout_width="fill_parent"        android:layout_height="fill_parent" /></LinearLayout>

Progress bar Layout

Then write a broser. xml file to store the progress bar

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:id="@+id/tvtitle" android:layout_width="fill_parent" android:layout_height="wrap_content" android:focusableInTouchMode="true" android:singleLine="true" android:ellipsize="marquee" android:focusable="false" android:marqueeRepeatLimit="marquee_forever" android:textSize="20sp" android:layout_centerVertical="true"/> <ProgressBar android:id="@+id/pb" android:layout_width="fill_parent" android:layout_height="wrap_content" style="?android:attr/progressBarStyleHorizontal" android:visibility="gone" android:layout_alignParentBottom="true" ></ProgressBar> </RelativeLayout>

 

Webchromeclient

Override onprogresschanged and onreceivedtitle events (use the animation to fade away after the progress bar is loaded)

/**** Mywebchromeclient. Java * copyright (c) 2012

* Creation: cuiran 3:05:34 */package COM. cayden. citygirl. activity; import android. app. activity; import android. view. view; import android. view. animation. animation; import android. view. animation. animationutils; import android. webKit. webchromeclient; import android. webKit. webview; import android. widget. progressbar; import android. widget. textview;/**** todo * @ author cuiran * @ version todo */public class mywebchromeclient extends webchromeclient {private activity; private progressbar Pb; private animation; private textview tvtitle; public mywebchromeclient (activity) {This. activity = activity;} @ override public void onprogresschanged (webview view, int newprogress) {Pb = (progressbar) activity. findviewbyid (R. id. PB); Pb. setmax (100); If (newprogress <100) {If (Pb. getvisibility () = view. gone) Pb. setvisibility (view. visible); Pb. setprogress (newprogress);} else {Pb. setprogress (100); animation = animationutils. loadanimation (activity, R. anim. animation); // run the animation Pb. startanimation (animation); // sets the visibility of the spinner to an invisible Pb. setvisibility (view. invisible);} super. onprogresschanged (view, newprogress) ;}@ override public void onreceivedtitle (webview view, String title) {tvtitle = (textview) activity. findviewbyid (R. id. tvtitle); tvtitle. settext (title); super. onreceivedtitle (view, title );}}

Animated style Res/anim/animation. xml of the progress bar

<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="700"/> </set>

5. Program startup

/*** Progressactivity. java * copyright (c) 2012 * created: cuiran 2012-10-16 3:13:49 */package COM. cayden. citygirl. activity; import android. app. activity; import android. OS. bundle; import android. view. window; import android. webKit. webview;/*** todo * @ author cuiran * @ version todo */public class progressactivity extends activity {private webview browser; @ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); getwindow (). requestfeature (window. feature_custom_title); setcontentview (R. layout. my_browser); getwindow (). setfeatureint (window. feature_custom_title, R. layout. broser); browser = (webview) findviewbyid (R. id. webview); // currentwebview = browser; browser. setwebchromeclient (New mywebchromeclient (progressactivity. this); browser. loadurl ("http://shop.paipai.com/731681975 ");}}