利用TabHost自定义底部导航栏

布局中的引用

<com.itheima.oschina.base.MyFragmentTabHost    android:id="@+id/tab"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_marginTop="4dip"/>

自定义的MyFragmentTabHost

public class MyFragmentTabHost extends FragmentTabHost {    private String mCurrentTag;    private String mNoTabChangedTag;public MyFragmentTabHost(Context context, AttributeSet attrs) {        super(context, attrs);    }@Overridepublic void onTabChanged(String tag) {        Log.e("测试","tag:" + tag);        Log.e("测试","mCurrentTag:" + mCurrentTag);        Log.e("测试","mNoTabChangedTag:" + mNoTabChangedTag);        if (tag.equals(mNoTabChangedTag)) {            setCurrentTabByTag(mCurrentTag);        } else {            super.onTabChanged(tag);            mCurrentTag = tag;        }    }public void setNoTabChangedTag(String tag) {        this.mNoTabChangedTag = tag;    }}

枚举(用来提供TabHost的内容)

public enum MainTab {    NEWS(0, R.string.main_tab_name_news, R.drawable.tab_icon_new, ComprehensiveFragment.class),    TWEET(0, R.string.main_tab_name_tweet, R.drawable.tab_icon_tweet, TweetsViewPagerFragment.class),    QUICK(0, R.string.main_tab_name_quick, R.drawable.tab_icon_new, null),    EXPLORE(0, R.string.main_tab_name_explore, R.drawable.tab_icon_explore, FindFragment.class),    ME(0, R.string.main_tab_name_my, R.drawable.tab_icon_me, MyInformationFragment.class);    private int id;    private int resName;    private int resIcon;    private Class<?> clz;private MainTab(int id, int resName, int resIcon, Class<?> clz) {        this.id = id;        this.resName = resName;        this.resIcon = resIcon;        this.clz = clz;    }public int getId() {        return id;    }public void setId(int id) {        this.id = id;    }public int getResName() {        return resName;    }public void setResName(int resName) {        this.resName = resName;    }public int getResIcon() {        return resIcon;    }public void setResIcon(int resIcon) {        this.resIcon = resIcon;    }public Class<?> getClz() {       return clz;    }public void setClz(Class<?> clz) {        this.clz = clz;    }}

在Activity中的用法

private MyFragmentTabHost mTabHost;private void intiBottom() {   // 设置底部栏   mTabHost = (MyFragmentTabHost) findViewById(R.id.tab);   mTabHost.setup(this,getSupportFragmentManager(),R.id.content);// 初始化 tabhost        if (Build.VERSION.SDK_INT > 10) {            mTabHost.getTabWidget().setShowDividers(0);            # initTabs();            mTabHost.setCurrentTab(0);            mTabHost.setOnTabChangedListener(this);        }        ImageView showQuickOption = (ImageView) findViewById(R.id.quick_option_iv);        showQuickOption.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {                showQuickOption();            }        });    }#initTabsprivate void initTabs() {   MainTab[] tabs = MainTab.values();   int size = tabs.length;   for (int i = 0; i < size; i++) {   MainTab mainTab = tabs[i];   TabHost.TabSpec tab = mTabHost.newTabSpec(getString(mainTab.getResName()));View view = LayoutInflater.from(getApplicationContext()).inflat(R.layout.tab_indicator, null);   TextView title = (TextView) view.findViewById(R.id.tab_title);   Drawable drawable = this.getResources().getDrawable(mainTab.getResIcon());   title.setCompoundDrawablesWithIntrinsicBounds(null,drawable,null,null);        if (i == 2){            view.setVisibility(View.INVISIBLE);            mTabHost.setNoTabChangedTag(getString(mainTab.getResName()));          }            title.setText(getString(mainTab.getResName()));            tab.setIndicator(view);            tab.setContent(new TabHost.TabContentFactory() {                @Override                public View createTabContent(String tag) {                    return new View(HomeActivity.this);                }            });            mTabHost.addTab(tab,mainTab.getClz(),null);        }    }#onTabChanged@Overridepublic void onTabChanged(String tabId) {     int size = mTabHost.getTabWidget().getTabCount();     for (int i = 0; i < size; i++) {         View view = mTabHost.getTabWidget().getChildAt(i);         if (i == mTabHost.getCurrentTab()){             view.setSelected(true);         }else{             view.setSelected(false);            }        }    }