Viewpager implementation of Android in the screen left and right switch (introductory article)

Most apps can switch back and forth on several screens,

First create two new activity, content arbitrary, layout arbitrary. Next in Mainactivity.xml:

1 <Relativelayoutxmlns:android= "Http://schemas.android.com/apk/res/android"2 Xmlns:tools= "Http://schemas.android.com/tools"3 Android:layout_width= "Match_parent"4 Android:layout_height= "Match_parent"5 Tools:context=". Mainactivity " >6 7     <Android.support.v4.view.ViewPager8         Android:id= "@+id/viewpager"9 Android:layout_width= "Wrap_content"Ten Android:layout_height= "Wrap_content" > One     </Android.support.v4.view.ViewPager> A  - </relativelayou

Do not forget the ANDROID-SUPPORT-V4 bag, currently 4.0 or more of the version comes with

Next is the method in Java:

1 protected voidonCreate (Bundle savedinstancestate) {2         Super. OnCreate (savedinstancestate);3 Setcontentview (r.layout.activity_main);4Viewpager =(Viewpager) Findviewbyid (R.id.viewpager);5View view1 = Layoutinflater.from (mainactivity. This). Inflate (R.LAYOUT.A,6                 NULL);7View view2 = Layoutinflater.from (mainactivity. This). Inflate (r.layout.b,8                 NULL);9List =NewArraylist<view>();Ten List.add (view1); One List.add (VIEW2); AViewpager.setadapter (NewMyadapter ()); -}

1 classMyadapterextendsPageradapter {2 3 @Override4          Public intGetCount () {5             returnlist.size ();6         }7 8 @Override9          Public BooleanIsviewfromobject (View arg0, Object arg1) {Ten             returnarg0 = =arg1; One         } A  - @Override -          PublicCharsequence Getpagetitle (intposition) { the             returnTitlelist.get (position); -  -         } -  + @Override -          PublicObject Instantiateitem (View container,intposition) { + ((Viewpager) container). AddView (List.get (position)); A             returnList.get (position); at         } -  - @Override -          Public voidDestroyitem (View container,intposition, Object object) { -             Super. Destroyitem (container, Position, object); - ((Viewpager) container). Removeview (List.get (position)); in         } -}

Now you can switch between two screens.

Viewpager implementation of Android in the screen left and right switch (introductory article)