PagerSlidingTabStrip加ViewPager的使用，PagerSlidingTabStrip增加單條目的點擊事件

使用PagerSlidingTabStrip和viewPager實現了聯動，但是PagerSlidingTabStrip並沒有給出設置字體大小，顏色，以及滑動條長度的方法，自己加以處理了一下。

需求還需要設置點擊事件。如圖

整片代碼：

import java.util.Locale;

import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
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.ViewTreeObserver.OnGlobalLayoutListener;
import android.widget.HorizontalScrollView;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.yizooo.yizooo.R;
import com.yizooo.yizooo.ui.*;
import com.yizooo.yizooo.ui.LogUtils;


/**
 * 滑動指示器pstsindicatorcolor顏色
 * 在視圖的底部的全寬度的線pstsunderlinecolor顏色
 * 選項卡之間的分隔pstsdividercolor顏色
 * 滑動指示器pstsindicatorheightheight
 * 在視圖的底部的全寬度的線pstsunderlineheight高度
 * pstsdividerpadding頂部和底部填充的分頻器
 * pststabpaddingleftright左、右填充每個選項卡
 * pstsscrolloffset卷軸被選擇的標籤的偏移
 * pststabbackground背景繪製的每個標籤，應該是一個statelistdrawable
 * pstsshouldexpand如果設置爲TRUE，每個標籤都給予同樣的重量，默認爲false
 * pststextallcaps如果爲真，所有選項卡標題都是大寫，默認爲true
 * 擴展4個屬性 ， 分別是 默認的字體大小 和顏色 ，和選中後的 字體大小和顏色
 */

public class PagerSlidingTabStrip extends HorizontalScrollView {

   private int indicatorwidth = 100;
   public String confirmSort = "desc";


   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 int selectedPosition = 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 = false;
   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 selectedTabTextSize=20;
   private int selectedTabTextColor = 0xFF666666;
   private Typeface tabTypeface = null;
   private int tabTypefaceStyle = Typeface.NORMAL;

   private int lastScrollX = 0;

   private int tabBackgroundResId = R.drawable.background_tab;

   private Locale locale;

   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);

      // get system attrs (android:textSize and android:textColor)

      TypedArray a = context.obtainStyledAttributes(attrs, ATTRS);

      // tabTextSize = a.getDimensionPixelSize(0, tabTextSize);
      //tabTextColor = a.getColor(1, tabTextColor);

      a.recycle();

      // get custom attrs

      a = context.obtainStyledAttributes(attrs, R.styleable.PagerSlidingTabStrip);

      indicatorColor = a.getColor(R.styleable.PagerSlidingTabStrip_pstsIndicatorColor, indicatorColor);

增加字體顏色大小的方法

      //下面4個擴展的屬性
      tabTextSize=a.getDimensionPixelSize(R.styleable.PagerSlidingTabStrip_zmsTabTextSize, tabTextSize);
      tabTextColor=a.getColor(R.styleable.PagerSlidingTabStrip_zmsTabTextColor, tabTextColor);

      selectedTabTextSize=a.getDimensionPixelSize(R.styleable.PagerSlidingTabStrip_zmsSelectedTabTextSize, selectedTabTextSize);
      selectedTabTextColor=a.getColor(R.styleable.PagerSlidingTabStrip_zmsSelectedTabTextColor, 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);

      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 does not have adapter instance.");
      }

      pager.setOnPageChangeListener(pageListener);

      notifyDataSetChanged();
   }

   public void setOnPageChangeListener(OnPageChangeListener listener) {
      this.delegatePageListener = listener;
   }

   public void notifyDataSetChanged() {
      LogUtils.i("notifyDataSetChanged");
      tabsContainer.removeAllViews();

      tabCount = pager.getAdapter().getCount();

      for (int i = 0; i < 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() {

         @Override
         public void onGlobalLayout() {
            getViewTreeObserver().removeGlobalOnLayoutListener(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);

   }

/**

*	通過廣播處理了點擊事件。切換排序

*/

   private void addTab(final int position, View tab) {
      tab.setFocusable(true);
      tab.setOnClickListener(new OnClickListener() {
         @Override
         public void onClick(View v) {
            pager.setCurrentItem(position);
            LogUtils.i("pager裏");
            if (currentPosition == selectedPosition && selectedPosition == 2) {
               LogUtils.i("pager兩次");
               if (confirmSort == "asc"){
                  confirmSort = "desc";
               }else {
                  confirmSort = "asc";
               }
               setViewPager(pager);
               Intent mIntent = new Intent("REFRESH");
               mIntent.putExtra("confirmSort", confirmSort);
               mIntent.putExtra("name",pager.getAdapter().getPageTitle(2).toString());
               //發送廣播
               UIUtils.getContext().sendBroadcast(mIntent);


            }


         }
      });
      tab.setPadding(tabPadding, 0, tabPadding, 0);
      tabsContainer.addView(tab, position, shouldExpand ? expandedTabLayoutParams : defaultTabLayoutParams);

   }

   private void updateTabStyles() {

      for (int i = 0; i < tabCount; i++) {

         View v = tabsContainer.getChildAt(i);

         v.setBackgroundResource(tabBackgroundResId);

         if (v instanceof TextView) {

            TextView tab = (TextView) v;
            tab.setTextSize(TypedValue.COMPLEX_UNIT_PX, tabTextSize);
            tab.setTypeface(tabTypeface, tabTypefaceStyle);
            tab.setTextColor(tabTextColor);

            // setAllCaps() is only available from API 14, so the upper case is made manually if we are on a
            // 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));
               }
            }
            if (i == selectedPosition) {
               tab.setTextColor(selectedTabTextColor);
               tab.setTextSize(TypedValue.COMPLEX_UNIT_PX, selectedTabTextSize);
            }
         }
      }

   }

   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);
      }

   }

/**

*處理滑動條寬度的代碼，

*/

   /**
    * 設置滑動條的寬度(必須設置，全寬也需要設置，也可以刪掉此方法，和變量indicatorwidth)
    * @param width
    */
   public void setIndicatorWidth(int width){
      this.indicatorwidth = width;
   }

   @Override
   protected void onDraw(Canvas canvas) {
      super.onDraw(canvas);

      if (isInEditMode() || tabCount == 0) {
         return;
      }

      final int height = getHeight();

      // draw underline
      rectPaint.setColor(underlineColor);
      canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);

      // draw indicator line
      rectPaint.setColor(indicatorColor);

      // default: line below current tab
      View currentTab = tabsContainer.getChildAt(currentPosition);
      int tabPadding=(currentTab.getWidth()-indicatorwidth)/2;
      float lineLeft = currentTab.getLeft()+tabPadding;
      float lineRight = currentTab.getRight()-tabPadding;

      // if there is an offset, start interpolating left and right coordinates between current and next tab
      if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {

         View nextTab = tabsContainer.getChildAt(currentPosition + 1);
         final float nextTabLeft = nextTab.getLeft()+tabPadding;
         final float nextTabRight = nextTab.getRight()-tabPadding;

         lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
         lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
      }

      canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);

      // draw divider

      dividerPaint.setColor(dividerColor);
      for (int i = 0; i < 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) {
         selectedPosition = position;
         updateTabStyles();
         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;
      notifyDataSetChanged();
   }

   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 void setSelectedTextSize(int setSelectedTextSize) {
      this.selectedTabTextSize = setSelectedTextSize;
      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 setSelectedTextColor(int textColor) {
      this.selectedTabTextColor = textColor;
      updateTabStyles();
   }

   public void setSelectedTextColorResource(int resId) {
      this.selectedTabTextColor = getResources().getColor(resId);
      updateTabStyles();
   }

   public int getSelectedTextColor() {
      return selectedTabTextColor;
   }

   public void setTypeface(Typeface typeface, int style) {
      this.tabTypeface = typeface;
      this.tabTypefaceStyle = style;
      updateTabStyles();
   }

   public void setTabBackground(int resId) {
      this.tabBackgroundResId = resId;
      updateTabStyles();
   }

   public int getTabBackground() {
      return tabBackgroundResId;
   }

   public void setTabPaddingLeftRight(int paddingPx) {
      this.tabPadding = paddingPx;
      updateTabStyles();
   }

   public int getTabPaddingLeftRight() {
      return tabPadding;
   }

   @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];
         }
      };
   }




}