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                ??一站式輕松地調用各大LLM模型接口,支持GPT4、智譜、豆包、星火、月之暗面及文生圖、文生視頻 廣告
                App的主頁面布局,常見方式為**TabLayout**+**ViewPager**+**Fragment**組合。 ![](https://box.kancloud.cn/e728d91c2e46e02a9a8a528dd9750a99_602x1006.png ) ### 一、 TabLayout 1、 TabLayout屬于design類庫,需要在build.gradle文件引入類庫: ~~~ dependencies { implementation 'com.android.support:design:26.1.0' } ~~~ 2、 xml布局文件 ~~~ <android.support.design.widget.TabLayout android:id="@+id/tabbar" android:layout_width="match_parent" android:layout_height="wrap_content"> </android.support.design.widget.TabLayout> ~~~ 3、通過以下屬性設置Tab項的字體顏色及底部指示器樣式 ~~~ ///tab字體及選中字體樣式 app:tabTextColor="@color/your_unselected_text_color" app:tabSelectedTextColor="@color/your_selected_text_color" ///指示器樣式 app:tabIndicatorColor="@android:color/white" ~~~ 4、設置TabLayout的選中事件 ~~~ tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() { @Override public void onTabSelected(TabLayout.Tab tab) { } @Override public void onTabUnselected(TabLayout.Tab tab) { } @Override public void onTabReselected(TabLayout.Tab tab) { } }); ~~~ ### 二、ViewPager: > * ViewPager是android-support-v4.jar包中的一個系統控件 > * ViewPager繼承自ViewGroup > * ViewPager專門用以實現左右滑動切換View的效果 引入類庫: ~~~ dependencies { implementation 'com.android.support:support-v4:26.1.0' } ~~~ **ViewPager常用方法** 1. setAdapter(PagerAdapter adapter) 建立與適配器的聯系 2. FragmentPagerAdapter:PagerAdapter類 PagerAdapter類是與ViewPager配合使用的適配器類 ViewPager將調用PagerAdapter來取得所需顯示的頁,而PagerAdapter也會在數據變化時,通知ViewPager。 ~~~ @Override public Fragment getItem(int position) { return fragment; } @Override public int getCount() { return xxx; } @Override public CharSequence getPageTitle(int position) { return title; } ~~~ ### 三、TabLayout與ViewPager綁定 當TabLayout與ViewPager綁定后,切換底部tab或左右滑動pager,確保一致性。 ~~~ tabLayout.setupWithViewPager(viewPager); ~~~
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