Android Faux today headline hand interface

public class Myindicator extends Horizontalscrollview implements Viewpager.onpagechangelistener {private Viewpager MVi    Ewpager;    Private LinearLayout mylinearlayout; /** * We implement the Viewpager.onpagechangelistener interface, because we want to listen to the viewpager of the sliding page behavior, so as to change the status of the navigation bar * So we can also see that myindicator holding Viewpager     What if we still want to listen to Viewpager?    * Here I have provided an interface for Myindicator, like the Onpagechangelistener method called **/Myonpagechangelistener Mlistener; Private interface Myonpagechangelistener {void onpagescrolled (int position, float positionoffset, int positionoffs        Etpixels);        void onpageselected (int position);    void onpagescrollstatechanged (int state);    } private int oldselected; In order for TextView to click, I set the Onclicklistener for each textview,//is to get the target title bar index, and then call Setcurrentitem () on it, so that the effect of click-Sliding,    Click on the title bar, Viewpager will also follow the page.            Private final Onclicklistener Mtabclicklistener = new Onclicklistener () {public void OnClick (view view) {            Mytabview Tabview = (mytabview) view; OldSelected = Mviewpager.getcurrentitem ();            Final int newselected = Tabview.index;        Setcurrentitem (newselected);    }    };        Public Myindicator (Context context) {super (context);    Init (context);        } public Myindicator (context context, AttributeSet Attrs) {Super (context, attrs);    Init (context);        } public Myindicator (context context, AttributeSet attrs, int defstyle) {Super (context, attrs, Defstyle);    Init (context);        } private void Init (Context mcontext) {sethorizontalscrollbarenabled (false);//hidden scroll bar//Add LinearLayout        Mylinearlayout = new LinearLayout (mcontext);        Mylinearlayout.setorientation (linearlayout.horizontal);    AddView (Mylinearlayout, New Viewgroup.layoutparams (Layoutparams.wrap_content, layoutparams.match_parent));    } public void Setviewpager (Viewpager viewpager) {setviewpager (Viewpager, 0); } @SuppressWarnings ("deprecation") public void SETVIEWPAger (Viewpager viewpager, int initpos) {if (Mviewpager = = Viewpager) {return;        } if (Mviewpager! = null) {Mviewpager.setonpagechangelistener (null);        } final Pageradapter adapter = Viewpager.getadapter ();        if (adapter = = null) {throw new IllegalStateException ("Viewpager does not has adapter instance.");        } Mviewpager = Viewpager;        Viewpager.setonpagechangelistener (this);        Notifydatasetchanged ();    Setcurrentitem (Initpos);        } private void Notifydatasetchanged () {mylinearlayout.removeallviews ();        Pageradapter madapter = Mviewpager.getadapter ();        int count = Madapter.getcount ();        for (int i = 0; i < count; i++) {AddTab (I, Madapter.getpagetitle (i));    } requestlayout (); The/** * code adds the top textview * * @param index * @param text */private void AddTab (int index, CHARSEQ Uence text) {Mytabview Tabview = new Mytabview (GetContext ());        Tabview.index = index;        Tabview.setfocusable (TRUE);        Tabview.setonclicklistener (Mtabclicklistener);        Tabview.settext (text);        Tabview.settextsize (22);        Tabview.settextcolor (GetContext (). Getresources (). GetColor (R.color.colorwhite));        Tabview.setpadding (20, 0, 20, 0);        Tabview.settextalignment (View.text_alignment_center);        Pageradapter madapter = Mviewpager.getadapter ();        int screenwidth = Getresources (). Getdisplaymetrics (). Widthpixels;        if (Madapter.getcount () <= 4) {tabview.setwidth (Screenwidth/madapter.getcount ());        } else {tabview.setwidth (SCREENWIDTH/4);    } mylinearlayout.addview (Tabview); }/** * Selected Animation * * @param view */@TargetApi (build.version_codes. Honeycomb) @SuppressLint ("Newapi") private void animation (view view) {Objectanimator ScaleX = Objectanimator        . Offloat (View, "ScaleX", 1f); OBjectanimator ScaleY = objectanimator.offloat (view, "ScaleY", 1f);        Objectanimator fade = objectanimator.offloat (view, "Alpha", 1f);        Animatorset animset = new Animatorset ();        Animset.play (ScaleX). with (ScaleY). with (fade);        Animset.setduration (500);    Animset.start (); }/** * Not selected Animation * * @param view */private void Animation2 (view view) {Objectanimator ScaleX        = Objectanimator.offloat (view, "ScaleX", 0.8f);        Objectanimator ScaleY = objectanimator.offloat (view, "ScaleY", 0.8f);        Objectanimator fade = objectanimator.offloat (view, "Alpha", 0.5f);        Animatorset animset = new Animatorset ();        Animset.play (ScaleX). with (ScaleY). with (fade);        Animset.setduration (500);    Animset.start (); } public void Setcurrentitem (int item) {if (Mviewpager = = null) {throw new IllegalStateException ("V        Iewpager have not been bound. ");        int mselectedtabindex = Item; Mviewpager.Setcurrentitem (item);        Final int tabcount = Mylinearlayout.getchildcount ();            for (int i = 0; i < Tabcount; i++) {//Traverse title, change the selected background to final View child = Mylinearlayout.getchildat (i);            Final Boolean isSelected = (i = = Item);            Child.setselected (isSelected);                if (isSelected) {animation (child);                Animatetotab (item);//Animation effect} else {animation2 (child);            Child.setbackgroundcolor (color.transparent);    }}} private Runnable mtabselector;        private void Animatetotab (final int position) {final View Tabview = mylinearlayout.getchildat (position);        if (mtabselector! = null) {removecallbacks (mtabselector); } mtabselector = new Runnable () {public void run () {final int scrollpos = Tabview.getle   FT ()-(GetWidth ()-tabview.getwidth ())/2;//calculates the position to slide to Smoothscrollto (scrollpos, 0);             Mtabselector = null;        }        };    Post (Mtabselector);    Perform animation on the main thread} public void Setmyonpagechangelistener (Myonpagechangelistener listener) {Mlistener = listener; } @Override public void onpagescrolled (int position, float positionoffset, int positionoffsetpixels) {if (    Mlistener = null) mlistener.onpagescrolled (position, Positionoffset, positionoffsetpixels);        } @Override public void onpageselected (int position) {Setcurrentitem (position);    if (Mlistener! = null) mlistener.onpageselected (position); } @Override public void onpagescrollstatechanged (int state) {if (Mlistener! = null) mlistener.onpagescrollst    Atechanged (state); }}

Use:

<com.cqytjr.www.cheji.views.myindicator        android:id= "@+id/indicator"        android:layout_width= "Match_ Parent "        android:layout_height=" wrap_content "        android:background=" #c4c77f "/>    < Android.support.v4.view.ViewPager        android:id= "@+id/pager"        android:layout_width= "Match_parent        " android:layout_height= "0DP"        android:layout_weight= "1"/>

New Myfragmentmanager (Getsupportfragmentmanager (), content);         = (Viewpager) Findviewbyid (R.id.pager);         = (myindicator) Findviewbyid (r.id.indicator);        Pager.setadapter (adapter);        Indicator.setviewpager (pager);

Android Mimic today's headline hand interface