android 关于封装tabbar，任意修改样式

ゝ一纸荒年。 2022-06-10 14:12 184阅读 0赞

![Center][]

主要代码：

package com.sun.framework.CustomizeVC;
    
    import android.content.Context;
    import android.graphics.Color;
    import android.os.Build;
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentActivity;
    import android.support.v4.app.FragmentManager;
    import android.support.v4.app.FragmentTransaction;
    import android.util.AttributeSet;
    import android.util.TypedValue;
    import android.view.Gravity;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.FrameLayout;
    import android.widget.ImageView;
    import android.widget.LinearLayout;
    import android.widget.RelativeLayout;
    import android.widget.TextView;
    
    import com.sun.framework.Utils.ScreenUtils;
    
    import java.util.ArrayList;
    import java.util.Collection;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    import java.util.concurrent.atomic.AtomicInteger;
    
    public class TabBar extends LinearLayout {
    
        public int mSelectTextColor;//default Color.WHITE 选择字体颜色
        public int mUnSelectTextColor;//default Color.parseColor("#808080") 灰色 没有选择字体颜色
        public int mUnSelectTabItemBgColor;//default Color.argb(0,0,0,0) 没有选中的item背景颜色
        public int mSelectTabVItemBgColor;//default Color.argb(0,0,0,0) 选中的item背景颜色
        public int mDefaultSelectIndex;//default 0
    
        public Boolean mIsFullScreen;//default false 是否全屏
        public Boolean mIsFragRemove;//default false 使用Remove frag的逻辑  true 使用hide frag的逻辑
        public Boolean mIsShowTabBarView;//default true 是否显示TabBarView
    
        public int[] mSelectImageVIconArray;
        public int[] mUnSelectImageVIconArray;
    
        public int[] mSelectTextColorArray;
        public int[] mUnSelectTextColorArray;
    
        public Class<?>[] mTabFragmentClassArray;
        public String[] mTextVTitleArray;
    
        public float mTabBarHeight; //default 49
        public float mTabBar_ImageV_Height; //default 25
        public float mTabBar_ImageV_Width;//default 25
        public float mTabBar_TextV_Height;//default WRAP_CONTENT
        public float mTabBar_TextV_Width;//default WRAP_CONTENT
        public int mTabBarViewBackgroundColor;//default Color.rgb(0,0,0) tabbar背景颜色
    
        private List<Fragment> fragLst;
        private Map<Object, Fragment> tabFragS;
        private FrameLayout tabFragContainer;
        public LinearLayout tabBarView;
        private List<View> tabLst;
        private int preSelectIndex = -1;
        private Context context;
        private ScreenUtils screenUtils;
        private OnTabSelectedChangingListener onTabSelectedChangingListener;
    
        public TabBar(Context context) {
            super(context);
            this.context = context;
            commonInit();
        }
    
        public TabBar(Context context, AttributeSet attrs) {
            super(context, attrs);
            this.context = context;
            commonInit();
        }
    
        public TabBar(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
    
        }
    
        private void commonInit() {
            this.setOrientation(VERTICAL);
            screenUtils = new ScreenUtils(context);
            mIsFullScreen = false;
            mIsFragRemove = false;
            mIsShowTabBarView = true;
            mTabBarHeight = 49;//ViewGroup.LayoutParams.WRAP_CONTENT;
            mTabBar_ImageV_Height = 25;
            mTabBar_ImageV_Width = 25;
            mTabBar_TextV_Height = ViewGroup.LayoutParams.WRAP_CONTENT;
            mTabBar_TextV_Width = ViewGroup.LayoutParams.WRAP_CONTENT;
            mTabBarViewBackgroundColor = Color.rgb(0, 0, 0);
            mUnSelectTabItemBgColor = Color.argb(0, 0, 0, 0);
            mSelectTabVItemBgColor = Color.argb(0, 0, 0, 0);
            mUnSelectTextColor = Color.parseColor("#808080");
            mSelectTextColor = Color.WHITE;
            mDefaultSelectIndex = 0;
        }
    
        public void refreshTabBar() {
    
            if (this.getChildCount() > 0) {
                this.removeAllViews();
            }
    
            tabLst = new ArrayList<View>();
            fragLst = new ArrayList<Fragment>();
            tabFragS = new HashMap<Object, Fragment>();
    
            tabFragContainer = new FrameLayout(context);
    
            tabFragContainer.setBackgroundColor(Color.WHITE);
    
            if (mIsShowTabBarView) {
                tabBarView = new LinearLayout(context);
                tabBarView.setBackgroundColor(mTabBarViewBackgroundColor);
            }
            if (!mIsFullScreen) {
                this.addView(tabFragContainer);
                if (mIsShowTabBarView) {
                    this.addView(tabBarView);
                }
            } else {
                RelativeLayout relativeLayout = new RelativeLayout(context);
                LinearLayout linearLayout = new LinearLayout(context);
                linearLayout.addView(tabFragContainer);
                relativeLayout.addView(linearLayout);
    
                RelativeLayout.LayoutParams relativeLayoutLayoutParams = (RelativeLayout.LayoutParams) linearLayout.getLayoutParams();
                relativeLayoutLayoutParams.height = LayoutParams.MATCH_PARENT;
                relativeLayoutLayoutParams.width = LayoutParams.MATCH_PARENT;
    
                if (mIsShowTabBarView) {
                    LinearLayout linearLayout2 = new LinearLayout(context);
                    linearLayout2.addView(tabBarView);
                    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
                    params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, 1);
                    linearLayout2.setLayoutParams(params);
                    relativeLayout.addView(linearLayout2);
                }
                this.addView(relativeLayout);
    
            }
            if (mIsShowTabBarView) {
                LayoutParams tabContLayoutParams = (LayoutParams) tabBarView.getLayoutParams();
                tabContLayoutParams.height = screenUtils.dp2px(mTabBarHeight);
                tabContLayoutParams.width = LayoutParams.MATCH_PARENT;
                //tabContLayoutParams.weight=0;
            }
    
            LayoutParams tabPageContLayoutParams = (LayoutParams) tabFragContainer.getLayoutParams();
            tabPageContLayoutParams.height = LayoutParams.MATCH_PARENT;
            tabPageContLayoutParams.width = LayoutParams.MATCH_PARENT;
            tabPageContLayoutParams.weight = 1;
    
            if (mIsShowTabBarView) {
    
                for (int i = 0; i < mSelectImageVIconArray.length; i++)
                    AddTab(i);
    
                if (mDefaultSelectIndex != -1)
                    On_TablClick_Listner.onClick(tabLst.get(mDefaultSelectIndex));
    
            } else {
    
                AddTabFrag(mTabFragmentClassArray[mDefaultSelectIndex]);
            }
    
        }
    
    
        public void setOnTabSelectedChangingListener(
                OnTabSelectedChangingListener onTabSelectedChangingListener) {
            this.onTabSelectedChangingListener = onTabSelectedChangingListener;
        }
    
        public void SwitchTabBar(int tabBarIndex) {
    
            if (mIsShowTabBarView) {
                if (tabBarIndex < 0 || tabBarIndex > tabLst.size())
                    return;
                View sender = tabLst.get(tabBarIndex);
                this.On_TablClick_Listner.onClick(sender);
            } else {
                AddTabFrag(mTabFragmentClassArray[tabBarIndex]);
    
            }
        }
    
        protected void onLayout(boolean changed, int l, int t, int r, int b) {
            super.onLayout(changed, l, t, r, b);
            this.setOrientation(LinearLayout.VERTICAL);
    
        }
    
        Fragment currentFrag;
    
        private void AddTabFrag(Class<?> fragClass) {
    
            FragmentManager fm = ((FragmentActivity) this.getContext()).getSupportFragmentManager();
            FragmentTransaction tran = fm.beginTransaction();
    
            if (mIsFragRemove) {
                if (currentFrag != null) {
                    tran.remove(currentFrag);
                }
    
                FrameLayout layout = new FrameLayout(this.getContext());
                layout.setId(ViewIdGenerator.generateViewId());
                tabFragContainer.addView(layout);
                layout.getLayoutParams().height = ViewGroup.LayoutParams.MATCH_PARENT;
                layout.getLayoutParams().width = ViewGroup.LayoutParams.MATCH_PARENT;
    
                Fragment frag = null;
                try {
                    frag = (Fragment) fragClass.newInstance();
                    tran.add(layout.getId(), frag);
                    tran.show(frag);
                    currentFrag = frag;
    
                } catch (InstantiationException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }
            } else {
    
                Collection<Fragment> aCollection = tabFragS.values();
                for (Fragment fragment : aCollection) {
                    // if (fragment.isVisible()) {
                    tran.hide(fragment);
                    // }
                }
                try {
                    Fragment frag = tabFragS.get(fragClass.getName());
    
                    if (frag == null) {
                        FrameLayout layout = new FrameLayout(this.getContext());
                        layout.setId(ViewIdGenerator.generateViewId());
                        tabFragContainer.addView(layout);
                        layout.getLayoutParams().height = ViewGroup.LayoutParams.MATCH_PARENT;
                        layout.getLayoutParams().width = ViewGroup.LayoutParams.MATCH_PARENT;
                        frag = (Fragment) fragClass.newInstance();
                        tran.add(layout.getId(), frag);
                        fragLst.add(frag);
                        tabFragS.put(fragClass.getName(), frag);
                    }
                    tran.show(frag);
    
                } catch (InstantiationException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }
            }
            //tran.addToBackStack(null);
            tran.commit();
        }
    
        private void AddTab(int index) {
            LinearLayout tab = new LinearLayout(this.getContext());
            tab.setOrientation(VERTICAL);
            tab.setBackgroundColor(mUnSelectTabItemBgColor);
            tabBarView.addView(tab);
    
            LayoutParams params = (LayoutParams) tab.getLayoutParams();
            params.weight = 1;
            params.height = screenUtils.dp2px(mTabBarHeight);
            params.width = ViewGroup.LayoutParams.MATCH_PARENT;
            tab.setClickable(true);
    
            ImageView img = new ImageView(getContext());
            tab.addView(img);
            params = (LayoutParams) img.getLayoutParams();
            params.width = screenUtils.dp2px(mTabBar_ImageV_Width);
            params.height = screenUtils.dp2px(mTabBar_ImageV_Height);
            params.gravity = Gravity.CENTER;
            params.topMargin = screenUtils.dp2px(5);
            img.setImageResource(mUnSelectImageVIconArray[index]);
    
            TextView tv = new TextView(getContext());
            tab.addView(tv);
            params = (LayoutParams) tv.getLayoutParams();
            params.width = screenUtils.dp2px(mTabBar_TextV_Width);
            params.height = screenUtils.dp2px(mTabBar_TextV_Height);
            params.gravity = Gravity.CENTER;
            params.bottomMargin = screenUtils.dp2px(5);
            if (mUnSelectTextColorArray != null) {
                tv.setTextColor(mUnSelectTextColorArray[index]);
            } else {
                tv.setTextColor(mUnSelectTextColor);
            }
            tv.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12);
            tv.setText(mTextVTitleArray[index]);
    
            tab.setOnClickListener(On_TablClick_Listner);
            tabLst.add(tab);
        }
    
        OnClickListener On_TablClick_Listner = new OnClickListener() {
    
            @Override
            public void onClick(View v) {
                int index = tabLst.indexOf(v);
                if (preSelectIndex == index) return;
                if (onTabSelectedChangingListener != null && !onTabSelectedChangingListener.OnTabSelectedChanging(v, index))
                    return;
    
    
                if (preSelectIndex != -1) {
                    ViewGroup tab = (ViewGroup) tabLst.get(preSelectIndex);
                    tab.setBackgroundColor(mUnSelectTabItemBgColor);
                    ((ImageView) tab.getChildAt(0)).setImageResource(mUnSelectImageVIconArray[preSelectIndex]);
                    int color;
                    if (mUnSelectTextColorArray != null) {
                        color = mUnSelectTextColorArray[preSelectIndex];
                    } else {
                        color = mUnSelectTextColor;
                    }
                    ((TextView) tab.getChildAt(1)).setTextColor(color);
                }
    
                preSelectIndex = index;
                ViewGroup currTab = (ViewGroup) v;
                currTab.setBackgroundColor(mSelectTabVItemBgColor);
                ((ImageView) currTab.getChildAt(0)).setImageResource(mSelectImageVIconArray[preSelectIndex]);
                int color;
                if (mSelectTextColorArray != null) {
                    color = mSelectTextColorArray[preSelectIndex];
                } else {
                    color = mSelectTextColor;
                }
                ((TextView) currTab.getChildAt(1)).setTextColor(color);
                AddTabFrag(mTabFragmentClassArray[index]);
            }
        };
    
        public interface OnTabSelectedChangingListener {
            boolean OnTabSelectedChanging(View sender, int index);
        }
    
    
        public static class ViewIdGenerator {
            private static final AtomicInteger sNextGeneratedId = new AtomicInteger(1);
    
            public static int generateViewId() {
    
                if (Build.VERSION.SDK_INT < 17) {
                    for (; ; ) {
                        final int result = sNextGeneratedId.get();
                        // aapt-generated IDs have the high byte nonzero; clamp to the range under that.
                        int newValue = result + 1;
                        if (newValue > 0x00FFFFFF)
                            newValue = 1; // Roll over to 1, not 0.
                        if (sNextGeneratedId.compareAndSet(result, newValue)) {
                            return result;
                        }
                    }
                } else {
                    return View.generateViewId();
                }
    
            }
        }
    }

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
    <layout xmlns:android="http://schemas.android.com/apk/res/android">
    
        <data class="MainBinding">
    
        </data>
    
        <LinearLayout
            android:id="@+id/activity_main"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">
    
            <com.sun.framework.CustomizeVC.TabBar
                android:id="@+id/tabBar"
                android:layout_width="match_parent"
                android:layout_height="match_parent">
            </com.sun.framework.CustomizeVC.TabBar>
    
            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="match_parent">
    
            </RelativeLayout>
    
    
        </LinearLayout>

使用：

package com.example.apple.test4;
    
    import android.databinding.DataBindingUtil;
    import android.graphics.Color;
    import android.os.Bundle;
    import com.example.apple.test4.databinding.MainBinding;
    import com.sun.framework.CustomizeVC.SubFragmentActivity;
    import com.sun.framework.CustomizeVC.TabBar;
    
    public class MainActivity extends SubFragmentActivity {
        MainBinding binding;
        public TabBar tabBar;
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            binding = DataBindingUtil.setContentView(this,R.layout.activity_main);
            tabBar = binding.tabBar;
            tabBar.mSelectTextColorArray = new int[]{Color.RED,Color.RED,Color.GREEN,Color.YELLOW,Color.WHITE};
            //tabBar.isShowTabBarView = false;
            //tabBar.mDefaultSelectIndex = 4;
            tabBar.mTextVTitleArray = new String[]{"预报","列表","首页","地图","设置"};
            tabBar.mSelectImageVIconArray = new int[]{R.drawable.ditu_hov,R.drawable.ditu_hov,R.drawable.ditu_hov,R.drawable.ditu_hov,R.drawable.ditu_hov};
            tabBar.mUnSelectImageVIconArray = new int[]{R.drawable.ditu_hov,R.drawable.ditu_hov,R.drawable.ditu_hov,R.drawable.ditu_hov,R.drawable.ditu_hov};
            tabBar.mTabFragmentClassArray = new Class<?>[]{ForecastFragment.class,HomeFragment.class,ForecastFragment.class,ForecastFragment.class,ForecastFragment.class};
            tabBar.refreshTabBar();
        }
    
    }

我的业余技术微信公众号：YKJGZH，欢迎大家进入

[Center]: /images/20220610/78b1d79416c14505afd70592699fa5c2.png