Android实现简单底部导航栏 Android仿微信滑动切换效果

Android仿微信滑动切换最终实现效果：

大体思路：

主要使用两个自定义View配合实现; 底部图标加文字为一个自定义view,底部导航栏为一个载体,根据需要来添加底部图标;
2. 底部导航栏的设置方法类似于TabLayout的关联,View需要创建关联方法,用来关联VIewPager;
3. 通过关联方法获取ViewPager实例后,根据ViewPager页面数创建底部导航栏的图标按钮;

代码实现:

新建第一个自定义View, 图标 + 文字 的底部按钮;

  public class TabView extends LinearLayout {  BotBean mBean;  private TextView title;  private ImageView iconImage;      public TabView(Context context, BotBean bean) {   super(context);   this.mBean = bean;   initView();  }     public void initView() {   setOrientation(VERTICAL);   setGravity(Gravity.CENTER);    //添加小图标   iconImage = new ImageView(getContext());   LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT     , ViewGroup.LayoutParams.WRAP_CONTENT);   iconImage.setLayoutParams(layoutParams);   iconImage.setImageResource(mBean.getUncheckedId());    Drawable drawable = getContext().getResources().getDrawable(mBean.getUncheckedId());   Drawable wrapDrawable = DrawableCompat.wrap(drawable);   DrawableCompat.setTintList(wrapDrawable, ColorStateList.valueOf(Color.BLACK));   iconImage.setImageDrawable(wrapDrawable);    addView(iconImage);    //标题   title = new TextView(getContext());   LinearLayout.LayoutParams titleParams = new LayoutParams(LayoutParams.WRAP_CONTENT,     LayoutParams.WRAP_CONTENT);   title.setLayoutParams(titleParams);   title.setText(mBean.getContent());   addView(title);  }   //判断选择状态,改变图标  //供外部调用  public void setSelected(boolean isSelected) {   if (mBean == null) {    return;   }   if (isSelected) {    if (iconImage != null) {     //使用颜色过滤器,改变选中时的颜色     Drawable drawable = getContext().getResources().getDrawable(mBean.getUncheckedId());     Drawable wrapDrawable = DrawableCompat.wrap(drawable);     DrawableCompat.setTintList(wrapDrawable, ColorStateList.valueOf(Color.GREEN));     iconImage.setImageDrawable(wrapDrawable);      title.setTextColor(Color.GREEN);    }   } else {    if (title != null) { //    iconImage.setImageResource(mBean.getUncheckedId());     Drawable drawable = getContext().getResources().getDrawable(mBean.getUncheckedId());     Drawable wrapDrawable = DrawableCompat.wrap(drawable);     DrawableCompat.setTintList(wrapDrawable, ColorStateList.valueOf(Color.BLACK));     iconImage.setImageDrawable(wrapDrawable);      title.setTextColor(Color.GRAY);    }   }  } }