Android 工具栏和 SlidingTabLayout 大小

Question

我的 SlidingTabLayout 的大小有问题。我有该功能，如果需要，将在滚动时调整大小，在这种情况下，我不希望我的 SlidingTabLayout 调整大小，我希望它像下面这样小:-

这是它目前的样子:-

我已经尝试了很多方法来解决这个问题，但总是走入死胡同。谁能解释一下？

这是我的代码:-

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/fragmentCoordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<android.support.design.widget.AppBarLayout
    android:id="@+id/fragmentAppBar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/ThemeOverlay.AppCompat.ActionBar">

    <android.support.v7.widget.Toolbar
        android:id="@+id/fragmentToolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

    <com.photonapps.yesorno.navdrawer.SlidingTabLayout
        android:id="@+id/fragmentSlidingTabLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</android.support.design.widget.AppBarLayout>

<android.support.v4.view.ViewPager
    android:id="@+id/fragmentViewPager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />

</android.support.design.widget.CoordinatorLayout>

制表符

class
SlidingTabStrip extends LinearLayout {

private static final int DEFAULT_BOTTOM_BORDER_THICKNESS_DIPS = 2;
private static final byte DEFAULT_BOTTOM_BORDER_COLOR_ALPHA = 0x26;
private static final int SELECTED_INDICATOR_THICKNESS_DIPS = 2;
private static final int DEFAULT_SELECTED_INDICATOR_COLOR = 0xFFFFFFFF;

private static final int DEFAULT_DIVIDER_THICKNESS_DIPS = 1;
private static final byte DEFAULT_DIVIDER_COLOR_ALPHA = 0x00;
private static final float DEFAULT_DIVIDER_HEIGHT = 0.5f;

private final int mBottomBorderThickness;
private final Paint mBottomBorderPaint;

private final int mSelectedIndicatorThickness;
private final Paint mSelectedIndicatorPaint;

private final int mDefaultBottomBorderColor;

private final Paint mDividerPaint;
private final float mDividerHeight;

private int mSelectedPosition;
private float mSelectionOffset;

private SlidingTabLayout.TabColorizer mCustomTabColorizer;
private final SimpleTabColorizer mDefaultTabColorizer;

SlidingTabStrip(Context context) {
    this(context, null);
}

SlidingTabStrip(Context context, AttributeSet attrs) {
    super(context, attrs);
    setWillNotDraw(false);

    final float density = getResources().getDisplayMetrics().density;

    TypedValue outValue = new TypedValue();
    context.getTheme().resolveAttribute(R.attr.colorForeground, outValue,
            true);
    final int themeForegroundColor = outValue.data;

    mDefaultBottomBorderColor = setColorAlpha(themeForegroundColor,
            DEFAULT_BOTTOM_BORDER_COLOR_ALPHA);

    mDefaultTabColorizer = new SimpleTabColorizer();
    mDefaultTabColorizer
            .setIndicatorColors(DEFAULT_SELECTED_INDICATOR_COLOR);
    mDefaultTabColorizer.setDividerColors(setColorAlpha(
            Color.WHITE, DEFAULT_DIVIDER_COLOR_ALPHA));

    mBottomBorderThickness = (int) (DEFAULT_BOTTOM_BORDER_THICKNESS_DIPS * density);
    mBottomBorderPaint = new Paint();
    mBottomBorderPaint.setColor(mDefaultBottomBorderColor);

    mSelectedIndicatorThickness = (int) (SELECTED_INDICATOR_THICKNESS_DIPS * density);
    mSelectedIndicatorPaint = new Paint();

    mDividerHeight = DEFAULT_DIVIDER_HEIGHT;
    mDividerPaint = new Paint();
    mDividerPaint
            .setStrokeWidth((int) (DEFAULT_DIVIDER_THICKNESS_DIPS * density));
}

void setCustomTabColorizer(SlidingTabLayout.TabColorizer customTabColorizer) {
    mCustomTabColorizer = customTabColorizer;
    invalidate();
}

void setSelectedIndicatorColors(int... colors) {
    // Make sure that the custom colorizer is removed
    mCustomTabColorizer = null;
    mDefaultTabColorizer.setIndicatorColors(colors);
    invalidate();
}

void setDividerColors(int... colors) {
    // Make sure that the custom colorizer is removed
    mCustomTabColorizer = null;
    mDefaultTabColorizer.setDividerColors(colors);
    invalidate();
}

void onViewPagerPageChanged(int position, float positionOffset) {
    mSelectedPosition = position;
    mSelectionOffset = positionOffset;
    invalidate();
}

@Override
protected void onDraw(Canvas canvas) {
    final int height = getHeight();
    final int childCount = getChildCount();
    final int dividerHeightPx = (int) (Math.min(
            Math.max(0f, mDividerHeight), 1f) * height);
    final SlidingTabLayout.TabColorizer tabColorizer = mCustomTabColorizer != null ? mCustomTabColorizer
            : mDefaultTabColorizer;

    // Thick colored underline below the current selection
    if (childCount > 0) {
        View selectedTitle = getChildAt(mSelectedPosition);
        int left = selectedTitle.getLeft();
        int right = selectedTitle.getRight();
        int color = tabColorizer.getIndicatorColor(mSelectedPosition);

        if (mSelectionOffset > 0f
                && mSelectedPosition < (getChildCount() - 1)) {
            int nextColor = tabColorizer
                    .getIndicatorColor(mSelectedPosition + 1);
            if (color != nextColor) {
                color = blendColors(nextColor, color, mSelectionOffset);
            }

            // Draw the selection partway between the tabs
            View nextTitle = getChildAt(mSelectedPosition + 1);
            left = (int) (mSelectionOffset * nextTitle.getLeft() + (1.0f - mSelectionOffset)
                    * left);
            right = (int) (mSelectionOffset * nextTitle.getRight() + (1.0f - mSelectionOffset)
                    * right);
        }

        mSelectedIndicatorPaint.setColor(color);

        canvas.drawRect(left, height - mSelectedIndicatorThickness, right,
                height, mSelectedIndicatorPaint);
    }

    // Thin underline along the entire bottom edge
    canvas.drawRect(0, height - mBottomBorderThickness, getWidth(), height,
            mBottomBorderPaint);

    // Vertical separators between the titles
    int separatorTop = (height - dividerHeightPx) / 2;
    for (int i = 0; i < childCount - 1; i++) {
        View child = getChildAt(i);
        mDividerPaint.setColor(tabColorizer.getDividerColor(i));
        canvas.drawLine(child.getRight(), separatorTop, child.getRight(),
                separatorTop + dividerHeightPx, mDividerPaint);
    }
}

/**
 * Set the alpha value of the {@code color} to be the given {@code alpha}
 * value.
 */
private static int setColorAlpha(int color, byte alpha) {
    return Color.argb(alpha, Color.red(color), Color.green(color),
            Color.blue(color));
}

/**
 * Blend {@code color1} and {@code color2} using the given ratio.
 * 
 * @param ratio
 *            of which to blend. 1.0 will return {@code color1}, 0.5 will
 *            give an even blend, 0.0 will return {@code color2}.
 */
private static int blendColors(int color1, int color2, float ratio) {
    final float inverseRation = 1f - ratio;
    float r = (Color.red(color1) * ratio)
            + (Color.red(color2) * inverseRation);
    float g = (Color.green(color1) * ratio)
            + (Color.green(color2) * inverseRation);
    float b = (Color.blue(color1) * ratio)
            + (Color.blue(color2) * inverseRation);
    return Color.rgb((int) r, (int) g, (int) b);
}

private static class SimpleTabColorizer implements
        SlidingTabLayout.TabColorizer {
    private int[] mIndicatorColors;
    private int[] mDividerColors;

    @Override
    public final int getIndicatorColor(int position) {
        return mIndicatorColors[position % mIndicatorColors.length];
    }

    @Override
    public final int getDividerColor(int position) {
        return mDividerColors[position % mDividerColors.length];
    }

    void setIndicatorColors(int... colors) {
        mIndicatorColors = colors;
    }

    void setDividerColors(int... colors) {
        mDividerColors = colors;
    }
}
   }

这是 SlidingTabLayout

    public class SlidingTabLayout extends HorizontalScrollView {

/**
 * Allows complete control over the colors drawn in the tab layout. Set with
 * {@link #setCustomTabColorizer(TabColorizer)}.
 */
public interface TabColorizer {

    /**
     * @return return the color of the indicator used when {@code position}
     *         is selected.
     */
    int getIndicatorColor(int position);

    /**
     * @return return the color of the divider drawn to the right of
     *         {@code position}.
     */
    int getDividerColor(int position);

}

private static final int TITLE_OFFSET_DIPS = 24;
private static final int TAB_VIEW_PADDING_DIPS = 16;
private static final int TAB_VIEW_TEXT_SIZE_SP = 12;

private int mTitleOffset;

private int mTabViewLayoutId;
private int mTabViewTextViewId;

private ViewPager mViewPager;
private ViewPager.OnPageChangeListener mViewPagerPageChangeListener;

private final SlidingTabStrip mTabStrip;

public SlidingTabLayout(Context context) {
    this(context, null);
}

public SlidingTabLayout(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
}

public SlidingTabLayout(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    // Disable the Scroll Bar
    setHorizontalScrollBarEnabled(false);

    // Make sure that the Tab Strips fills this View
    setFillViewport(true);

    mTitleOffset = (int) (TITLE_OFFSET_DIPS * getResources().getDisplayMetrics().density);

    mTabStrip = new SlidingTabStrip(context);

    addView(mTabStrip, LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
}

/**
 * Set the custom {@link TabColorizer} to be used.
 * 
 * If you only require simple custmisation then you can use
 * {@link #setSelectedIndicatorColors(int...)} and
 * {@link #setDividerColors(int...)} to achieve similar effects.
 */
public void setCustomTabColorizer(TabColorizer tabColorizer) {
    mTabStrip.setCustomTabColorizer(tabColorizer);
}

/**
 * Sets the colors to be used for indicating the selected tab. These colors
 * are treated as a circular array. Providing one color will mean that all
 * tabs are indicated with the same color.
 */
public void setSelectedIndicatorColors(int... colors) {
    mTabStrip.setSelectedIndicatorColors(colors);
}

/**
 * Sets the colors to be used for tab dividers. These colors are treated as
 * a circular array. Providing one color will mean that all tabs are
 * indicated with the same color.
 */
public void setDividerColors(int... colors) {
    mTabStrip.setDividerColors(colors);
}

/**
 * Set the {@link ViewPager.OnPageChangeListener}. When using
 * {@link SlidingTabLayout} you are required to set any
 * {@link ViewPager.OnPageChangeListener} through this method. This is so
 * that the layout can update it's scroll position correctly.
 * 
 * @see ViewPager#setOnPageChangeListener(ViewPager.OnPageChangeListener)
 */
public void setOnPageChangeListener(ViewPager.OnPageChangeListener listener) {
    mViewPagerPageChangeListener = listener;
}

/**
 * Set the custom layout to be inflated for the tab views.
 * 
 * @param layoutResId
 *            Layout id to be inflated
 * @param textViewId
 *            id of the {@link TextView} in the inflated view
 */
public void setCustomTabView(int layoutResId, int textViewId) {
    mTabViewLayoutId = layoutResId;
    mTabViewTextViewId = textViewId;
}

/**
 * Sets the associated view pager. Note that the assumption here is that the
 * pager content (number of tabs and tab titles) does not change after this
 * call has been made.
 */
public void setViewPager(ViewPager viewPager) {
    mTabStrip.removeAllViews();

    mViewPager = viewPager;
    if (viewPager != null) {
        viewPager.setOnPageChangeListener(new InternalViewPagerListener());
        populateTabStrip();
    }
}

/**
 * Create a default view to be used for tabs. This is called if a custom tab
 * view is not set via {@link #setCustomTabView(int, int)}.
 */
protected TextView createDefaultTabView(Context context) {
    TextView textView = new TextView(context);
    textView.setGravity(Gravity.CENTER);
    textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, TAB_VIEW_TEXT_SIZE_SP);
    textView.setTypeface(Typeface.DEFAULT_BOLD);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        // If we're running on Honeycomb or newer, then we can use the
        // Theme's
        // selectableItemBackground to ensure that the View has a pressed
        // state
        TypedValue outValue = new TypedValue();
        getContext().getTheme().resolveAttribute(
                android.R.attr.selectableItemBackground, outValue, true);
        textView.setBackgroundResource(outValue.resourceId);
        textView.setTextColor(Color.WHITE);
    }

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
        // If we're running on ICS or newer, enable all-caps to match the
        // Action Bar tab style
        textView.setAllCaps(true);
    }

    int padding = (int) (TAB_VIEW_PADDING_DIPS * getResources()
            .getDisplayMetrics().density);
    textView.setPadding(padding, padding, padding, padding);

    return textView;
}

private void populateTabStrip() {
    final PagerAdapter adapter = mViewPager.getAdapter();
    final OnClickListener tabClickListener = new TabClickListener();

    for (int i = 0; i < adapter.getCount(); i++) {
        View tabView = null;
        TextView tabTitleView = null;

        if (mTabViewLayoutId != 0) {
            // If there is a custom tab view layout id set, try and inflate
            // it
            tabView = LayoutInflater.from(getContext()).inflate(
                    mTabViewLayoutId, mTabStrip, false);
            tabTitleView = (TextView) tabView
                    .findViewById(mTabViewTextViewId);
        }

        if (tabView == null) {
            tabView = createDefaultTabView(getContext());
        }

        if (tabTitleView == null && TextView.class.isInstance(tabView)) {
            tabTitleView = (TextView) tabView;
        }

        if (tabTitleView != null) tabTitleView.setText(adapter.getPageTitle(i));
        tabView.setOnClickListener(tabClickListener);

        mTabStrip.addView(tabView);
    }
}

@Override
protected void onAttachedToWindow() {
    super.onAttachedToWindow();

    if (mViewPager != null) {
        scrollToTab(mViewPager.getCurrentItem(), 0);
    }
}

private void scrollToTab(int tabIndex, int positionOffset) {
    final int tabStripChildCount = mTabStrip.getChildCount();
    if (tabStripChildCount == 0 || tabIndex < 0
            || tabIndex >= tabStripChildCount) {
        return;
    }

    View selectedChild = mTabStrip.getChildAt(tabIndex);
    if (selectedChild != null) {
        int targetScrollX = selectedChild.getLeft() + positionOffset;

        if (tabIndex > 0 || positionOffset > 0) {
            // If we're not at the first child and are mid-scroll, make sure
            // we obey the offset
            targetScrollX -= mTitleOffset;
        }

        scrollTo(targetScrollX, 0);
    }
}

private class InternalViewPagerListener implements
        ViewPager.OnPageChangeListener {
    private int mScrollState;

    @Override
    public void onPageScrolled(int position, float positionOffset,
            int positionOffsetPixels) {
        int tabStripChildCount = mTabStrip.getChildCount();
        if ((tabStripChildCount == 0) || (position < 0)
                || (position >= tabStripChildCount)) {
            return;
        }

        mTabStrip.onViewPagerPageChanged(position, positionOffset);

        View selectedTitle = mTabStrip.getChildAt(position);
        int extraOffset = (selectedTitle != null) ? (int) (positionOffset * selectedTitle
                .getWidth()) : 0;
        scrollToTab(position, extraOffset);

        if (mViewPagerPageChangeListener != null) {
            mViewPagerPageChangeListener.onPageScrolled(position,
                    positionOffset, positionOffsetPixels);
        }
    }

    @Override
    public void onPageScrollStateChanged(int state) {
        mScrollState = state;

        if (mViewPagerPageChangeListener != null) {
            mViewPagerPageChangeListener.onPageScrollStateChanged(state);
        }
    }

    @Override
    public void onPageSelected(int position) {
        if (mScrollState == ViewPager.SCROLL_STATE_IDLE) {
            mTabStrip.onViewPagerPageChanged(position, 0f);
            scrollToTab(position, 0);
        }

        if (mViewPagerPageChangeListener != null) {
            mViewPagerPageChangeListener.onPageSelected(position);
        }
    }

}

private class TabClickListener implements OnClickListener {
    @Override
    public void onClick(View v) {
        for (int i = 0; i < mTabStrip.getChildCount(); i++) {
            if (v == mTabStrip.getChildAt(i)) {
                mViewPager.setCurrentItem(i);
                return;
            }
        }
    }
}

}

样式.xml

<resources>

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="windowNoTitle">true</item>
    <item name="windowActionBar">false</item>
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

</resources>

任何帮助将不胜感激!!

Answer 1

为什么不使用 Android Design Support Library 中的 TabLayout| ？根据我自己的经验，我发现它在视觉效果和使用简单性方面都更好。

添加到您的 build.gradle 依赖闭包:

compile 'com.android.support:appcompat-v7:23.2.0'
compile 'com.android.support:design:23.2.0'

将 XML 中的 SlidingTabLayout 替换为:

    <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabGravity="fill"
        app:tabMode="scrollable" />

在您的 Java 代码中获取它:

TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(pager);