Viewswitcher usage examples of Android development _android

This example describes the Viewswitcher usage of Android development. Share to everyone for your reference, specific as follows:

Android.widget.ViewSwitcher is a viewanimator subclass that toggles between two view, but only one view at a time.

The code for the Viewswitcher AddView function is as follows:

/**
 * {@inheritDoc}
 * *
 @throws illegalstateexception If this switcher already contains
 two children */< c5/> @Override public
void AddView (View child, int index, viewgroup.layoutparams params) {
  if (Getchildcount () & Gt;= 2) {
    throw new IllegalStateException ("Can ' t add more than 2 views to a Viewswitcher");
  }
  Super.addview (Child, index, params);

It can be seen that if the number of view more than two, will throw an exception: java.lang.IllegalStateException, printing "can" t add more than 2 views to a Viewswitcher ". You can use Viewswitcher's factory to create a view or add a view that you create.

Here is an example of how to use Viewswitcher.

Layout file: Activity_main.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= "http://schemas.android.com/apk/res/" Android "xmlns:tools=" Http://schemas.android.com/tools "android:layout_width=" Match_parent "android:l ayout_height= "match_parent" android:orientation= "vertical" tools:context= ". 
      Mainactivity "> <linearlayout android:layout_width=" match_parent "android:layout_height=" Wrap_content " android:orientation= "Horizontal" > <button android:id= "@+id/prev" android:layout_width= "0
    DP "android:layout_height=" wrap_content "android:layout_weight=" 1 "android:text=" previous "/> <button android:id= "@+id/next" android:layout_width= "0DP" android:layout_height= "Wrap_conten" T "android:layout_weight=" 1 "android:text=" Next "/> </LinearLayout> <viewswitcher an Droid:id= "@+id/viewswitcher" android:layout_width= "Match_parEnt "android:layout_height=" wrap_content "> <imageview android:layout_width=" wrap_content " android:layout_height= "Wrap_content" android:src= "@drawable/ic_launcher"/> <linearlayout Andro Id:layout_width= "Match_parent" android:layout_height= "wrap_content" android:gravity= "center" Andro id:orientation= "vertical" > <button android:layout_width= "wrap_content" Android:layout_hei ght= "Wrap_content" android:text= "-button 2-"/> <textview android:layout_width= "Wrap_con Tent "android:layout_height=" Wrap_content "android:text=" LinearLayout 2 "/> &LT;/LINEARLAYOUT&G
  T

 </ViewSwitcher> </LinearLayout>

The code for the activity:

Package com.example.AndroidTest;
Import android.app.Activity;
Import Android.os.Bundle;
Import Android.view.View;
Import android.view.animation.Animation;
Import Android.view.animation.AnimationUtils;
Import Android.widget.Button;
Import Android.widget.ViewSwitcher;
  public class MyActivity extends activity {Button Buttonprev, buttonnext;
  Viewswitcher Viewswitcher;
  Animation Slide_in_left, Slide_out_right;
    @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
    Setcontentview (R.layout.activity_main);
    Buttonprev = (Button) Findviewbyid (R.id.prev);
    Buttonnext = (Button) Findviewbyid (R.id.next);
    Viewswitcher = (viewswitcher) Findviewbyid (R.id.viewswitcher); Slide_in_left = Animationutils.loadanimation (This, Android.
    R.anim.slide_in_left); Slide_out_right = Animationutils.loadanimation (This, Android.
    R.anim.slide_out_right);
    Viewswitcher.setinanimation (Slide_in_left); Viewswitcher.setoutAnimation (Slide_out_right);
        Buttonprev.setonclicklistener (New View.onclicklistener () {@Override public void OnClick (View arg0) {
      Viewswitcher.showprevious ();
    }
    });
        Buttonnext.setonclicklistener (New View.onclicklistener () {@Override public void OnClick (View arg0) {
      Viewswitcher.shownext ();
    }
    });
  ;

 }
}

To implement the effect diagram:

Using Viewswitcher's setfactory setting toggles the view into two steps.

Step one: Get an example of Viewswithcer

Switcher = (viewswitcher) Findviewbyid (R.id.viewswitcher);

Part II: Implementing Interface Viewfactory

Switcher.setfactory (New Viewfactory ()
{
  @Override public
  View Makeview ()
  {
    return Inflater.inflate (R.layout.slidelistview, null);
  }
);

More interested readers of Android-related content can view this site's topics: "Introduction to Android Development and advanced Tutorials", "Summary of Android Control usage", "Android SMS and phone operation Tips" and "Android Multimedia operating Tips Summary" (audio, video, Recording, etc.) "

I hope this article will help you with the Android program.