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我仅将 PagerSlidingTabStrips
与 Icons
集成在一起。但是我在图标上的 selector
无法使用 PagerSlidingTabStrips
。
xml
<PagerSlidingTabStrip
android:id="@+id/pager_sliding_tab_strip"
android:layout_width="fill_parent"
android:layout_height="45dip"
android:background="@color/white"
app:pstsDividerColor="#FFFFA500"
app:pstsIndicatorColor="#FFFFA500"
app:pstsTabPaddingLeftRight="14dip"
app:pstsUnderlineColor="#FFFFA500" />
在我的 ViewPager
上添加了 implements IconTabProvider
,效果很好。
public class ViewPagerAdapter extends FragmentPagerAdapter implements IconTabProvider {
final int PAGE_COUNT = 3;
private final int[] ICONS = { R.drawable.tab_icon_zname_contacts_selector, R.drawable.tab_icon_zname_friends_selector,
R.drawable.tab_icon_zname_call_log_selector };
@Override
public int getPageIconResId(int position) {
return ICONS[position];
}
}
iconSelector
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/tab_icon_zname_call_log_selected" android:state_selected="true"/>
<item android:drawable="@drawable/tab_icon_zname_call_log" android:state_selected="false"/>
</selector>
如何使图标选择器与 PagerSlidingTabStrips
一起工作?当该选项卡被选中时,我想要橙色图标,但无论如何它只会返回灰色。
最佳答案
我在已关闭的问题中找到了针对 PagerSlidingTabStrips
的 Icon_Selector
的修复。
修改PagerSlidingTabStrips.java
,添加如下代码
private int currentPageSelected = 0; //Fix : ICON SELECTOR
在 OnGlobalLayoutListener
内追加 NotifyDataSetChanged
方法
currentPosition = pager.getCurrentItem();
tabsContainer.getChildAt(currentPosition).setSelected(true); //ADDED THESE
scrollToChild(currentPosition, 0);
修改了onPageSelected()
:
@Override
public void onPageSelected(int position) {
tabsContainer.getChildAt(currentPageSelected).setSelected(false);
currentPageSelected = position;
tabsContainer.getChildAt(position).setSelected(true);
if (delegatePageListener != null) {
delegatePageListener.onPageSelected(position
}
}
图标选择器
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/tab_icon_zname_call_log_selected" android:state_selected="true"/>
<item android:drawable="@drawable/tab_icon_zname_call_log_selected" android:state_pressed="true"/>
<item android:drawable="@drawable/tab_icon_zname_call_log"/>
</selector>
PagerSlidingTabStrips.java
import java.util.Locale;
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.ViewTreeObserver.OnGlobalLayoutListener;
import android.widget.HorizontalScrollView;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.netdoers.zname.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 currentPageSelected = 0; //Fix : ICON SELECTOR
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 Typeface tabTypeface = null;
private int tabTypefaceStyle = Typeface.BOLD;
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);
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() {
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() {
@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();
tabsContainer.getChildAt(currentPosition).setSelected(true);//Fix : ICON SELECTOR
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() {
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));
}
}
}
}
}
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 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();
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);
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) {
/**
* Fix : ICON SELECTOR
*/
tabsContainer.getChildAt(currentPageSelected).setSelected(false);
currentPageSelected = position;
tabsContainer.getChildAt(position).setSelected(true);
/**
* Fix : ICON SELECTOR
*/
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;
}
@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];
}
};
}
}
我们需要提供给 ViewPager 的 ViewPagerAdapter.java
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import com.netdoers.zname.R;
import com.netdoers.zname.utils.PagerSlidingTabStrip.IconTabProvider;
/**
* @author Vikalp Patel (vikalppatelce@yahoo.com)
* @category Ui Helper
*
*/
public class ViewPagerAdapter extends FragmentPagerAdapter
/**
* PAGERSLIDINGTABSTIPS
*/
implements IconTabProvider
{
// Declare the number of ViewPager pages
// final int PAGE_COUNT = 5;
final int PAGE_COUNT = 3;
/**
* PAGERSLIDINGTABSTRIPS
*/
private final int[] ICONS = { R.drawable.tab_icon_zname_contact_selector, R.drawable.tab_icon_zname_friends_selector,
R.drawable.tab_icon_zname_call_log_selector };
/**
* SLIDINGTABLAYOUT
*/
/*private int[] imageResId = {
R.drawable.tab_icon_zname_contact_selector,
R.drawable.tab_icon_zname_friends_selector,
R.drawable.tab_icon_zname_call_log_selected
};
@Override
public CharSequence getPageTitle(int position) {
Drawable image = Zname.getApplication().getApplicationContext().getResources().getDrawable(imageResId[position]);
image.setBounds(0, 0, image.getIntrinsicWidth(), image.getIntrinsicHeight());
SpannableString sb = new SpannableString(" ");
ImageSpan imageSpan = new ImageSpan(image, ImageSpan.ALIGN_BOTTOM);
sb.setSpan(imageSpan, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
return sb;
}*/
/**
* SLIDINGTABLAYOUT
*/
/**
* @param fm
*/
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
/* (non-Javadoc)
* @see android.support.v4.app.FragmentPagerAdapter#getItem(int)
*/
@Override
public Fragment getItem(int item) {
switch (item) {
// Open HomeFragment.java
case 0:
ContactsFragment homeFragment = new ContactsFragment();
return homeFragment;
// Open PlaceOrderFragment.java
case 1:
GroupsFragment groupsFragment = new GroupsFragment();
return groupsFragment;
case 2:
CallLogsFragment callLogsFragment = new CallLogsFragment();
return callLogsFragment;
}
return null;
}
/* (non-Javadoc)
* @see android.support.v4.view.PagerAdapter#getCount()
*/
@Override
public int getCount() {
// TODO Auto-generated method stub
return PAGE_COUNT;
}
/**
* PAGERSLIDINGTABSTRIPS
*/
@Override
public int getPageIconResId(int position) {
// TODO Auto-generated method stub
return ICONS[position];
}
}
关于android - 图标选择器不适用于 PagerSlidingTabStrips,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24838668/
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