Android SlidingTabLayout定制分割线和指示条颜色

冷不防 2023-10-16 22:20 25阅读 0赞

**Android SlidingTabLayout定制分割线和指示条颜色**

Android SlidingTabLayout默认的滑动指示条是系统默认的某个蓝色系色值，分割线是灰色。如果要自定义实现滑动指示条和分割线定制颜色，则主要通过SlidingTabLayout的setCustomTabColorizer()方法实现。  
现在给出一个例子加以说明。  
（1）首先做一个MainActivity，此MainActivity没有实质意义，只是作为第二步加载要实现SlidingTabLayout Fragment的“容器”。  
（2）在一个Fragment实现SlidingTabLayout，然后将此Fragment加载。  
测试用的主Activity MainActivity.java ：

package zhangphil.tabs;
    
    import android.os.Bundle;
    import android.support.v4.app.FragmentActivity;
    import android.support.v4.app.FragmentTransaction;
    
    public class MainActivity extends FragmentActivity {
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_main);
    
    		if (savedInstanceState == null) {
    			FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
    			TabFragment fragment = new TabFragment();
    			transaction.replace(R.id.content_fragment, fragment);
    			transaction.commit();
    		}
    	}
    }

MainActivity.java需要的布局文件：activity\_main.xml：

TabFragment.java代码文件：

package zhangphil.tabs;
    
    import android.graphics.Color;
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentManager;
    import android.support.v4.app.FragmentPagerAdapter;
    import android.support.v4.view.ViewPager;
    import android.view.Gravity;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.TextView;
    
    import java.util.ArrayList;
    
    import zhangphil.view.SlidingTabLayout;
    
    public class TabFragment extends Fragment {
    
    	private static class PagerItem {
    		private final CharSequence mTitle;
    		private final int mIndicatorColor;
    		private final int mDividerColor;
    
    		public PagerItem(CharSequence title, int indicatorColor, int dividerColor) {
    			mTitle = title;
    			mIndicatorColor = indicatorColor;
    			mDividerColor = dividerColor;
    		}
    
    		public Fragment createFragment() {
    			return ContentFragment.newInstance(mTitle, mIndicatorColor, mDividerColor);
    		}
    
    		public CharSequence getTitle() {
    			return mTitle;
    		}
    
    		public int getIndicatorColor() {
    			return mIndicatorColor;
    		}
    
    		public int getDividerColor() {
    			return mDividerColor;
    		}
    	}
    
    	private ArrayList<PagerItem> mTabCards = new ArrayList<PagerItem>();
    
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    
    		mTabCards.add(new PagerItem("Tab A", Color.RED, Color.RED));
    
    		mTabCards.add(new PagerItem("Tab B", Color.YELLOW, Color.YELLOW));
    
    		mTabCards.add(new PagerItem("Tab C", Color.GREEN, Color.GREEN));
    
    		mTabCards.add(new PagerItem("Tab D", Color.TRANSPARENT, Color.TRANSPARENT));
    
    		mTabCards.add(new PagerItem("Tab E", Color.CYAN, Color.CYAN));
    
    		mTabCards.add(new PagerItem("Tab E", Color.BLACK, Color.BLACK));
    	}
    
    	@Override
    	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    		return inflater.inflate(R.layout.fragment, container, false);
    	}
    
    	@Override
    	public void onViewCreated(View view, Bundle savedInstanceState) {
    		ViewPager mViewPager = (ViewPager) view.findViewById(R.id.viewpager);
    		mViewPager.setAdapter(new MyFragmentPagerAdapter(getChildFragmentManager()));
    
    		SlidingTabLayout mSlidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tabs);
    		mSlidingTabLayout.setViewPager(mViewPager);
    
    		mSlidingTabLayout.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
    
    			@Override
    			public int getIndicatorColor(int position) {
    				return mTabCards.get(position).getIndicatorColor();
    			}
    
    			@Override
    			public int getDividerColor(int position) {
    				return mTabCards.get(position).getDividerColor();
    			}
    		});
    	}
    
    	private class MyFragmentPagerAdapter extends FragmentPagerAdapter {
    
    		MyFragmentPagerAdapter(FragmentManager fm) {
    			super(fm);
    		}
    
    		@Override
    		public Fragment getItem(int pos) {
    			return mTabCards.get(pos).createFragment();
    		}
    
    		@Override
    		public int getCount() {
    			return mTabCards.size();
    		}
    
    		@Override
    		public CharSequence getPageTitle(int position) {
    			return mTabCards.get(position).getTitle();
    		}
    	}
    
    	public static class ContentFragment extends Fragment {
    
    		private static final String KEY_TITLE = "title";
    		private static final String KEY_INDICATOR_COLOR = "indicator_color";
    		private static final String KEY_DIVIDER_COLOR = "divider_color";
    
    		public static ContentFragment newInstance(CharSequence title, int indicatorColor, int dividerColor) {
    			Bundle bundle = new Bundle();
    			bundle.putCharSequence(KEY_TITLE, title);
    			bundle.putInt(KEY_INDICATOR_COLOR, indicatorColor);
    			bundle.putInt(KEY_DIVIDER_COLOR, dividerColor);
    
    			ContentFragment fragment = new ContentFragment();
    			fragment.setArguments(bundle);
    
    			return fragment;
    		}
    
    		@Override
    		public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    			TextView tv = new TextView(getActivity());
    			tv.setGravity(Gravity.CENTER);
    			return tv;
    		}
    
    		@Override
    		public void onViewCreated(View view, Bundle savedInstanceState) {
    			super.onViewCreated(view, savedInstanceState);
    
    			TextView tv = (TextView) view;
    
    			Bundle args = getArguments();
    
    			String content = "";
    			if (args != null) {
    				String title = args.getCharSequence(KEY_TITLE) + "";
    
    				int indicatorColor = args.getInt(KEY_INDICATOR_COLOR);
    				String indicatorColors = Integer.toHexString(indicatorColor) + "";
    
    				int dividerColor = args.getInt(KEY_DIVIDER_COLOR);
    				String dividerColors = Integer.toHexString(dividerColor) + "";
    
    				content = content + "标题:" + title + "\n";
    				content = content + "indicatorColor:" + indicatorColors + "\n";
    				content = content + "dividerColor:" + dividerColors;
    			}
    
    			tv.setText(content);
    		}
    	}
    }

TabFragment.java需要的布局文件fragment.xml文件代码：

<?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="match_parent"
        android:orientation="vertical" >
    
        <zhangphil.view.SlidingTabLayout
            android:id="@+id/sliding_tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    
        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    
    </LinearLayout>

不要忘了引用Android官方实现的SlidingTabLayout和SlidingTabStrip。  
代码层次结构如图所示：

![Center][]

代码运行结果如图所示：

![Center 1][]

[Center]: https://img-blog.csdn.net/20151002213519148?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20151002213539349?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center