java - set default tab of PagerSlidingTab library -
i'm using pagerslidingtab library
github.com/astuetz/pagerslidingtabstrip
want tabs start tab2 right, use this:
pager.setcurrentitem(2); its ok,but want tab text color change after selected changed library source code
refer : https://github.com/astuetz/pagerslidingtabstrip/pull/62/files?short_path=04c6e90
so library source [after change]:
package com.astuetz; import android.annotation.suppresslint; import android.content.context; import android.content.res.typedarray; import android.graphics.canvas; import android.graphics.paint; import android.graphics.paint.style; import android.graphics.typeface; import android.os.build; import android.os.parcel; import android.os.parcelable; import android.support.v4.view.viewpager; import android.support.v4.view.viewpager.onpagechangelistener; import android.util.attributeset; import android.util.displaymetrics; import android.util.typedvalue; import android.view.gravity; import android.view.view; import android.view.view.basesavedstate; import android.view.view.onclicklistener; import android.view.viewtreeobserver.ongloballayoutlistener; import android.widget.horizontalscrollview; import android.widget.imagebutton; import android.widget.linearlayout; import android.widget.textview; import android.widget.framelayout.layoutparams; import java.util.locale; import com.astuetz.pagerslidingtabstrip.r; public class pagerslidingtabstrip extends horizontalscrollview { public interface icontabprovider { public int getpageiconresid(int position); } // @formatter:off private static final int[] attrs = new int[] { android.r.attr.textsize, android.r.attr.textcolor }; // @formatter:on private linearlayout.layoutparams defaulttablayoutparams; private linearlayout.layoutparams expandedtablayoutparams; private final pagelistener pagelistener = new pagelistener(); public onpagechangelistener delegatepagelistener; private linearlayout tabscontainer; private viewpager pager; private int tabcount; private int currentposition = 0; private float currentpositionoffset = 0f; private paint rectpaint; private paint dividerpaint; private int indicatorcolor = 0xff666666; private int underlinecolor = 0x1a000000; private int dividercolor = 0x1a000000; private boolean shouldexpand = true; private boolean textallcaps = true; private int scrolloffset = 52; private int indicatorheight = 8; private int underlineheight = 2; private int dividerpadding = 12; private int tabpadding = 24; private int dividerwidth = 1; private int tabtextsize = 12; private int tabtextcolor = 0xff666666; private int tabdeactivatetextcolor = 0xbbbbbb; private typeface tabtypeface = null; private int tabtypefacestyle = typeface.normal; private int lastscrollx = 0; private int tabbackgroundresid = r.drawable.background_tab; private int transparentcolorid = r.color.transparent; private locale locale; private boolean tabswitch; public pagerslidingtabstrip(context context) { this(context, null); } public pagerslidingtabstrip(context context, attributeset attrs) { this(context, attrs, 0); } public pagerslidingtabstrip(context context, attributeset attrs, int defstyle) { super(context, attrs, defstyle); setfillviewport(true); setwillnotdraw(false); tabscontainer = new linearlayout(context); tabscontainer.setorientation(linearlayout.horizontal); tabscontainer.setlayoutparams(new layoutparams(layoutparams.match_parent, layoutparams.match_parent)); addview(tabscontainer); displaymetrics dm = getresources().getdisplaymetrics(); scrolloffset = (int) typedvalue.applydimension(typedvalue.complex_unit_dip, scrolloffset, dm); indicatorheight = (int) typedvalue.applydimension(typedvalue.complex_unit_dip, indicatorheight, dm); underlineheight = (int) typedvalue.applydimension(typedvalue.complex_unit_dip, underlineheight, dm); dividerpadding = (int) typedvalue.applydimension(typedvalue.complex_unit_dip, dividerpadding, dm); tabpadding = (int) typedvalue.applydimension(typedvalue.complex_unit_dip, tabpadding, dm); dividerwidth = (int) typedvalue.applydimension(typedvalue.complex_unit_dip, dividerwidth, dm); tabtextsize = (int) typedvalue.applydimension(typedvalue.complex_unit_sp, tabtextsize, dm); // system attrs (android:textsize , android:textcolor) typedarray = context.obtainstyledattributes(attrs, attrs); tabtextsize = a.getdimensionpixelsize(0, tabtextsize); tabtextcolor = a.getcolor(1, tabtextcolor); a.recycle(); // custom attrs = context.obtainstyledattributes(attrs, r.styleable.pagerslidingtabstrip); indicatorcolor = a.getcolor(r.styleable.pagerslidingtabstrip_pstsindicatorcolor, indicatorcolor); underlinecolor = a.getcolor(r.styleable.pagerslidingtabstrip_pstsunderlinecolor, underlinecolor); dividercolor = a.getcolor(r.styleable.pagerslidingtabstrip_pstsdividercolor, dividercolor); indicatorheight = a.getdimensionpixelsize(r.styleable.pagerslidingtabstrip_pstsindicatorheight, indicatorheight); underlineheight = a.getdimensionpixelsize(r.styleable.pagerslidingtabstrip_pstsunderlineheight, underlineheight); dividerpadding = a.getdimensionpixelsize(r.styleable.pagerslidingtabstrip_pstsdividerpadding, dividerpadding); tabpadding = a.getdimensionpixelsize(r.styleable.pagerslidingtabstrip_pststabpaddingleftright, tabpadding); tabbackgroundresid = a.getresourceid(r.styleable.pagerslidingtabstrip_pststabbackground, tabbackgroundresid); shouldexpand = a.getboolean(r.styleable.pagerslidingtabstrip_pstsshouldexpand, shouldexpand); scrolloffset = a.getdimensionpixelsize(r.styleable.pagerslidingtabstrip_pstsscrolloffset, scrolloffset); textallcaps = a.getboolean(r.styleable.pagerslidingtabstrip_pststextallcaps, textallcaps); tabswitch = a.getboolean(r.styleable.pagerslidingtabstrip_pststabswitch, tabswitch); tabtextcolor = a.getcolor(r.styleable.pagerslidingtabstrip_pstsactivatetextcolor, tabtextcolor); tabdeactivatetextcolor = a.getcolor(r.styleable.pagerslidingtabstrip_pstsdeactivatetextcolor, tabdeactivatetextcolor); a.recycle(); rectpaint = new paint(); rectpaint.setantialias(true); rectpaint.setstyle(style.fill); dividerpaint = new paint(); dividerpaint.setantialias(true); dividerpaint.setstrokewidth(dividerwidth); defaulttablayoutparams = new linearlayout.layoutparams(layoutparams.wrap_content, layoutparams.match_parent); expandedtablayoutparams = new linearlayout.layoutparams(0, layoutparams.match_parent, 1.0f); if (locale == null) { locale = getresources().getconfiguration().locale; } } public void setviewpager(viewpager pager) { this.pager = pager; if (pager.getadapter() == null) { throw new illegalstateexception("viewpager not have adapter instance."); } pager.setonpagechangelistener(pagelistener); notifydatasetchanged(); } public void setonpagechangelistener(onpagechangelistener listener) { this.delegatepagelistener = listener; } public void notifydatasetchanged() { tabscontainer.removeallviews(); tabcount = pager.getadapter().getcount(); (int = 0; < tabcount; i++) { if (pager.getadapter() instanceof icontabprovider) { addicontab(i, ((icontabprovider) pager.getadapter()).getpageiconresid(i)); } else { addtexttab(i, pager.getadapter().getpagetitle(i).tostring()); } } updatetabstyles(); getviewtreeobserver().addongloballayoutlistener(new ongloballayoutlistener() { @suppresswarnings("deprecation") @suppresslint("newapi") @override public void ongloballayout() { if (build.version.sdk_int < build.version_codes.jelly_bean) { getviewtreeobserver().removeglobalonlayoutlistener(this); } else { getviewtreeobserver().removeongloballayoutlistener(this); } currentposition = pager.getcurrentitem(); scrolltochild(currentposition, 0); } }); } private void addtexttab(final int position, string title) { textview tab = new textview(getcontext()); tab.settext(title); tab.setgravity(gravity.center); tab.setsingleline(); addtab(position, tab); } private void addicontab(final int position, int resid) { imagebutton tab = new imagebutton(getcontext()); tab.setimageresource(resid); addtab(position, tab); } private void addtab(final int position, view tab) { tab.setfocusable(true); tab.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { pager.setcurrentitem(position); } }); tab.setpadding(tabpadding, 0, tabpadding, 0); tabscontainer.addview(tab, position, shouldexpand ? expandedtablayoutparams : defaulttablayoutparams); } private void updatetabstyles() { (int = 0; < tabcount; i++) { view v = tabscontainer.getchildat(i); v.setbackgroundresource(!tabswitch ? tabbackgroundresid : transparentcolorid); if (v instanceof textview) { textview tab = (textview) v; tab.settextsize(typedvalue.complex_unit_px, tabtextsize); tab.settypeface(tabtypeface, tabtypefacestyle); tab.settextcolor(tabswitch && != 0 ? tabdeactivatetextcolor : tabtextcolor); // setallcaps() available api 14, upper case made manually if on // pre-ics-build if (textallcaps) { if (build.version.sdk_int >= build.version_codes.ice_cream_sandwich) { tab.setallcaps(true); } else { tab.settext(tab.gettext().tostring().touppercase(locale)); } } }else if (v instanceof imagebutton) { imagebutton tab = (imagebutton) v; tab.setselected(tabswitch && == 0 ? true : false); } } } private void updateactivatetab(final int position) { (int = 0; < tabcount; i++) { view v = tabscontainer.getchildat(i); if (v instanceof textview) { textview tab = (textview) v; tab.settextcolor(position == ? tabtextcolor : tabdeactivatetextcolor); } else { v.setselected(position == ? true : false); } } } private void scrolltochild(int position, int offset) { if (tabcount == 0) { return; } int newscrollx = tabscontainer.getchildat(position).getleft() + offset; if (position > 0 || offset > 0) { newscrollx -= scrolloffset; } if (newscrollx != lastscrollx) { lastscrollx = newscrollx; scrollto(newscrollx, 0); } } @override protected void ondraw(canvas canvas) { super.ondraw(canvas); if (isineditmode() || tabcount == 0) { return; } final int height = getheight(); // draw indicator line rectpaint.setcolor(indicatorcolor); // default: line below current tab view currenttab = tabscontainer.getchildat(currentposition); float lineleft = currenttab.getleft(); float lineright = currenttab.getright(); // if there offset, start interpolating left , right coordinates between current , next tab if (currentpositionoffset > 0f && currentposition < tabcount - 1) { view nexttab = tabscontainer.getchildat(currentposition + 1); final float nexttableft = nexttab.getleft(); final float nexttabright = nexttab.getright(); lineleft = (currentpositionoffset * nexttableft + (1f - currentpositionoffset) * lineleft); lineright = (currentpositionoffset * nexttabright + (1f - currentpositionoffset) * lineright); } canvas.drawrect(lineleft, height - indicatorheight, lineright, height, rectpaint); // draw underline rectpaint.setcolor(underlinecolor); canvas.drawrect(0, height - underlineheight, tabscontainer.getwidth(), height, rectpaint); // draw divider dividerpaint.setcolor(dividercolor); (int = 0; < tabcount - 1; i++) { view tab = tabscontainer.getchildat(i); canvas.drawline(tab.getright(), dividerpadding, tab.getright(), height - dividerpadding, dividerpaint); } } private class pagelistener implements onpagechangelistener { @override public void onpagescrolled(int position, float positionoffset, int positionoffsetpixels) { currentposition = position; currentpositionoffset = positionoffset; scrolltochild(position, (int) (positionoffset * tabscontainer.getchildat(position).getwidth())); invalidate(); if (delegatepagelistener != null) { delegatepagelistener.onpagescrolled(position, positionoffset, positionoffsetpixels); } } @override public void onpagescrollstatechanged(int state) { if (state == viewpager.scroll_state_idle) { scrolltochild(pager.getcurrentitem(), 0); } if (delegatepagelistener != null) { delegatepagelistener.onpagescrollstatechanged(state); } } @override public void onpageselected(int position) { if (tabswitch) { updateactivatetab(position); } if (delegatepagelistener != null) { delegatepagelistener.onpageselected(position); } } } public void setindicatorcolor(int indicatorcolor) { this.indicatorcolor = indicatorcolor; invalidate(); } public void setindicatorcolorresource(int resid) { this.indicatorcolor = getresources().getcolor(resid); invalidate(); } public int getindicatorcolor() { return this.indicatorcolor; } public void setindicatorheight(int indicatorlineheightpx) { this.indicatorheight = indicatorlineheightpx; invalidate(); } public int getindicatorheight() { return indicatorheight; } public void setunderlinecolor(int underlinecolor) { this.underlinecolor = underlinecolor; invalidate(); } public void setunderlinecolorresource(int resid) { this.underlinecolor = getresources().getcolor(resid); invalidate(); } public int getunderlinecolor() { return underlinecolor; } public void setdividercolor(int dividercolor) { this.dividercolor = dividercolor; invalidate(); } public void setdividercolorresource(int resid) { this.dividercolor = getresources().getcolor(resid); invalidate(); } public int getdividercolor() { return dividercolor; } public void setunderlineheight(int underlineheightpx) { this.underlineheight = underlineheightpx; invalidate(); } public int getunderlineheight() { return underlineheight; } public void setdividerpadding(int dividerpaddingpx) { this.dividerpadding = dividerpaddingpx; invalidate(); } public int getdividerpadding() { return dividerpadding; } public void setscrolloffset(int scrolloffsetpx) { this.scrolloffset = scrolloffsetpx; invalidate(); } public int getscrolloffset() { return scrolloffset; } public void setshouldexpand(boolean shouldexpand) { this.shouldexpand = shouldexpand; requestlayout(); } public boolean getshouldexpand() { return shouldexpand; } public boolean istextallcaps() { return textallcaps; } public void setallcaps(boolean textallcaps) { this.textallcaps = textallcaps; } public void settextsize(int textsizepx) { this.tabtextsize = textsizepx; updatetabstyles(); } public int gettextsize() { return tabtextsize; } public void settextcolor(int textcolor) { this.tabtextcolor = textcolor; updatetabstyles(); } public void settextcolorresource(int resid) { this.tabtextcolor = getresources().getcolor(resid); updatetabstyles(); } public int gettextcolor() { return tabtextcolor; } public void settypeface(typeface typeface, int style) { this.tabtypeface = typeface; this.tabtypefacestyle = style; updatetabstyles(); } public void settabbackground(int resid) { this.tabbackgroundresid = resid; } public int gettabbackground() { return tabbackgroundresid; } public void settabpaddingleftright(int paddingpx) { this.tabpadding = paddingpx; updatetabstyles(); } public int gettabpaddingleftright() { return tabpadding; } public void settabswitch(boolean tabswitch) { this.tabswitch = tabswitch; updatetabstyles(); } public void setactivatetextcolor(int activatetextcolor) { this.tabtextcolor = activatetextcolor; updatetabstyles(); } public void setdeactivatetextcolor(int deactivatetextcolor) { this.tabdeactivatetextcolor = deactivatetextcolor; updatetabstyles(); } @override public void onrestoreinstancestate(parcelable state) { savedstate savedstate = (savedstate) state; super.onrestoreinstancestate(savedstate.getsuperstate()); currentposition = savedstate.currentposition; requestlayout(); } @override public parcelable onsaveinstancestate() { parcelable superstate = super.onsaveinstancestate(); savedstate savedstate = new savedstate(superstate); savedstate.currentposition = currentposition; return savedstate; } static class savedstate extends basesavedstate { int currentposition; public savedstate(parcelable superstate) { super(superstate); } private savedstate(parcel in) { super(in); currentposition = in.readint(); } @override public void writetoparcel(parcel dest, int flags) { super.writetoparcel(dest, flags); dest.writeint(currentposition); } public static final parcelable.creator<savedstate> creator = new parcelable.creator<savedstate>() { @override public savedstate createfromparcel(parcel in) { return new savedstate(in); } @override public savedstate[] newarray(int size) { return new savedstate[size]; } }; } } but problem when activity start,selected tab , default tab(highlight tab text color) different!
screen shot:
http://goo.gl/9tgho6
tnx...
you can achieve by:
private void updatetabstyles() { (int = 0; < tabcount; i++) { view v = tabscontainer.getchildat(i); v.setbackgroundresource(!tabswitch ? tabbackgroundresid : transparentcolorid); if (v instanceof textview) { textview tab = (textview) v; tab.settextsize(typedvalue.complex_unit_px, tabtextsize); tab.settypeface(tabtypeface, tabtypefacestyle); // tab.settextcolor(tabswitch && != 0 ? tabdeactivatetextcolor : tabtextcolor); if (textallcaps) { if (build.version.sdk_int >= build.version_codes.ice_cream_sandwich) { tab.setallcaps(true); } else { tab.settext(tab.gettext().tostring().touppercase(locale)); } } }else if (v instanceof imagebutton) { imagebutton tab = (imagebutton) v; tab.setselected(tabswitch && == 0 ? true : false); } } } 
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