在滑動選項卡布局的選項卡上設置圖標適合屏幕的選項卡

Question

我使用的是slidingTabLayout，我定製它以使用圖標而不是文本。但標籤沒有正確對齊，即在我的最後一個標籤之後沒有空間。我希望他們獲得充分的空間並適合屏幕。我設置distributeEvenly(true)，如u在PIC看到我有4個選項卡

customtab.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal" 

    > 


    <ImageView 
     android:id="@+id/tab_name_img" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:gravity="center" 

     /> 

    TextView 
     android:id="@+id/textView2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="New Text" 
     android:textColor="@drawable/slidingtab_title_color"/> 


</LinearLayout> 

Slidingtablayout.java

package com.example.rajdeepsingh.newlistview_module; 

/** 
* Created by Lord Voldemort on 24/09/2015. 
*/ 
/* 
* Copyright 2014 Google Inc. All rights reserved. 
* 
* Licensed under the Apache License, Version 2.0 (the "License"); 
* you may not use this file except in compliance with the License. 
* You may obtain a copy of the License at 
* 
*  http://www.apache.org/licenses/LICENSE-2.0 
* 
* Unless required by applicable law or agreed to in writing, software 
* distributed under the License is distributed on an "AS IS" BASIS, 
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
* See the License for the specific language governing permissions and 
* limitations under the License. 
*/ 

import android.content.Context; 
import android.graphics.Point; 
import android.graphics.Typeface; 
import android.support.v4.view.ViewPager; 
import android.util.AttributeSet; 
import android.util.SparseArray; 
import android.util.TypedValue; 
import android.view.Display; 
import android.view.Gravity; 
import android.view.View; 
import android.view.ViewGroup; 
import android.view.WindowManager; 
import android.widget.HorizontalScrollView; 
import android.widget.ImageView; 
import android.widget.LinearLayout; 
import android.widget.TextView; 



import android.content.Context; 
import android.graphics.Typeface; 
import android.support.v4.view.ViewPager; 
import android.util.AttributeSet; 
import android.util.SparseArray; 
import android.util.TypedValue; 
import android.view.Gravity; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.HorizontalScrollView; 
import android.widget.ImageView; 
import android.widget.LinearLayout; 
import android.widget.TextView; 



/* 
* Copyright 2014 Google Inc. All rights reserved. 
* 
* Licensed under the Apache License, Version 2.0 (the "License"); 
* you may not use this file except in compliance with the License. 
* You may obtain a copy of the License at 
* 
*  http://www.apache.org/licenses/LICENSE-2.0 
* 
* Unless required by applicable law or agreed to in writing, software 
* distributed under the License is distributed on an "AS IS" BASIS, 
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
* See the License for the specific language governing permissions and 
* limitations under the License. 
*/ 

/** 
* To be used with ViewPager to provide a tab indicator component which give constant feedback as to 
* the user's scroll progress. 
* <p> 
* To use the component, simply add it to your view hierarchy. Then in your 
* {@link android.app.Activity} or {@link android.support.v4.app.Fragment} call 
* {@link #setViewPager(android.support.v4.view.ViewPager)} providing it the ViewPager this layout is being used for. 
* <p> 
* The colors can be customized in two ways. The first and simplest is to provide an array of colors 
* via {@link #setSelectedIndicatorColors(int...)}. The 
* alternative is via the {@link TabColorizer} interface which provides you complete control over 
* which color is used for any individual position. 
* <p> 
* The views used as tabs can be customized by calling {@link #setCustomTabView(int, int)}, 
* providing the layout ID of your custom layout. 
*/ 
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); 

    } 


    private static final int TITLE_OFFSET_DIPS = 24; 
    private static final int TAB_VIEW_PADDING_DIPS = 10; 
    private static final int TAB_VIEW_TEXT_SIZE_SP = 12; 

    private int mTitleOffset; 

    private int mTabViewLayoutId; 
    private int mTabViewTextViewId; 
    private int mTabViewImageViewId; 
    private boolean mDistributeEvenly; 

    private ViewPager mViewPager; 
    private SparseArray<String> mContentDescriptions = new SparseArray<String>(); 
    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...)} to achieve 
    * similar effects. 
    */ 
    public void setCustomTabColorizer(TabColorizer tabColorizer) { 
     mTabStrip.setCustomTabColorizer(tabColorizer); 
    } 

    public void setDistributeEvenly(boolean distributeEvenly) { 
     mDistributeEvenly = distributeEvenly; 
    } 

    /** 
    * 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); 
    } 

    /** 
    * Set the {@link android.support.v4.view.ViewPager.OnPageChangeListener}. When using {@link SlidingTabLayout} you are 
    * required to set any {@link android.support.v4.view.ViewPager.OnPageChangeListener} through this method. This is so 
    * that the layout can update it's scroll position correctly. 
    * 
    * @see android.support.v4.view.ViewPager#setOnPageChangeListener(android.support.v4.view.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 android.widget.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 ImageView createDefaultImageView(Context context) { 
     ImageView imageView = new ImageView(context); 

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

    //  int width = (int) (getResources().getDisplayMetrics().widthPixels/mViewPager.getAdapter().getCount()); 
    // imageView.setMinimumWidth(width); 

     WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); 
     Display display = wm.getDefaultDisplay(); 
     Point size = new Point(); 
     display.getSize(size); 
     imageView.setMaxWidth(size.x /4); 


     return imageView; 
    } 
    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); 
     textView.setLayoutParams(new LinearLayout.LayoutParams(
       ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT)); 

     TypedValue outValue = new TypedValue(); 
     getContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground, 
       outValue, true); 
     textView.setBackgroundResource(outValue.resourceId); 
     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 MainPagerAdapter adapter = (MainPagerAdapter) mViewPager.getAdapter(); 
     final View.OnClickListener tabClickListener = new TabClickListener(); 

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

     tabIconView = (ImageView) tabView.findViewById(mTabViewImageViewId); 


      } 

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

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

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

      if (tabIconView == null && ImageView.class.isInstance(tabView)) { 
       tabIconView = (ImageView) tabView; 
       tabIconView.setImageDrawable(getResources().getDrawable(adapter.getDrawable(i))); 
      } 


      if (mViewPager.getCurrentItem() == i) { 
       tabIconView.setSelected(true); 
      } 
    /*  if (mDistributeEvenly) { 
       LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) tabView.getLayoutParams(); 
       lp.width = 0; 
       lp.weight = 1; 
      } 

*/ 

      // tabTitleView.setText(adapter.getPageTitle(i)); 

      tabView.setOnClickListener(tabClickListener); 
      String desc = mContentDescriptions.get(i, null); 
      if (desc != null) { 
       tabView.setContentDescription(desc); 
      } 

      mTabStrip.addView(tabView); 
      if (i == mViewPager.getCurrentItem()) { 
       tabView.setSelected(true); 
      } 
     } 
    } 

    public void setContentDescription(int i, String desc) { 
     mContentDescriptions.put(i, desc); 
    } 

    @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) { 
      for (int i = 0; i < mTabStrip.getChildCount(); i++) { 
       mTabStrip.getChildAt(i).setSelected(false); 
      } 
      mTabStrip.getChildAt(position).setSelected(true); 

      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; 
       } 
      } 
     } 
    } 

} 

Answer 1

在方法createdefaultimageview（）不得不加入這一行的slidintablayout.java

..

imageView.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1.0f));

Answer 2

在您的MainActivity加這條線。

SlidingTabs slidingTabs = (SlidingTabs)findViewById(R.id.tabs); 
slidingTabs.setDistributeEvenly(true);