Android progress bar usage

Android progress bar
1. Implementation results
 

 

 

2. layout code
Write a my_browser.xml file to store the WebView.

[Html]
<? 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

[Html]
<? 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)

[Java]
/**
* MyWebChromeClient. java
* Copyright (C) 2012
[Java] view plaincopy
* 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 animation;
 
Private TextView tvtitle;
 
Public MyWebChromeClient (Activity 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 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

[Html]
<? Xml version = "1.0" encoding = "UTF-8"?>
<Set xmlns: android = "http://schemas.android.com/apk/res/android">
& Lt; alpha android: fromAlpha = "1.0"
Android: toAlpha = "0.0"
Android: duration = "700"/>
</Set>

5. Program startup
[Java]
/**
* ProgressActivity. java
* Copyright (C) 2012
* Creation: cuiran 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 ");
 
}
 
}