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TabLayout的使用简单介绍


比如在平常的项目中实现这样的效果,一般都是都会使用viewPageIndicate等几个开源框架直接实现,或者使用自定义的HorizontalScroll再配合ViewPage+Fragment实现。在谷歌推出marginDesign之后,实现这种效果可以直接使用TabLayout实现。另外Tablayout可以通过自定义View自定义导航栏的效果。这样使用的时候更加灵活多变。
首先需要导入design包
在app的build.gradle下添加design的包

dependencies {compile "com.android.support:design:25.0.1" }
然后就开始撸起袖子,开始如何使用
在xml文件里面写布局:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/activity_main"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><android.support.design.widget.TabLayoutandroid:id="@+id/tabLayout"android:layout_width="match_parent"style="@style/MyCustomTabLayout"android:layout_height="wrap_content" /><android.support.v4.view.ViewPagerandroid:id="@+id/viewPager"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1"/></LinearLayout>
既然使用到了fragment,就免不了要添加下简单的布局:
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><TextViewandroid:id="@+id/textView"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true"android:text="默认" /> </RelativeLayout>
然后是fragment和FragmentPagerAdapter的代码。写过的人应该对这个很熟了,就直接粘下代码
public class FramentAdapter extends FragmentPagerAdapter {private String[] titles;public FramentAdapter(FragmentManager fm, String[] titles) {super(fm);this.titles = titles;}@Overridepublic Fragment getItem(int position) {return PageFragment.newInstace(position,titles);}@Overridepublic int getCount() {return titles.length;}@Overridepublic CharSequence getPageTitle(int position) {return titles[position];}}
Fragment的代码:
public class PageFragment extends Fragment {private int position;private String[] titles;private Context context;public static PageFragment newInstace(int position, String[] titles) {Bundle bundle = new Bundle();bundle.putInt("POSITION", position);bundle.putStringArray("ARRAY", titles);PageFragment pageFragment = new PageFragment();pageFragment.setArguments(bundle);return pageFragment;}@Overridepublic void onAttach(Context context) {super.onAttach(context);this.context=context;}@Overridepublic void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);position = getArguments().getInt("POSITION");titles = getArguments().getStringArray("ARRAY");}@Nullable@Overridepublic View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {View view =inflater.inflate(R.layout.item_layout,null);TextView textView = (TextView) view.findViewById(R.id.textView);textView.setText(titles[position]);return view;}}
写好这些之后最后在MainActivity中看下如何使用:
public class MainActivity extends FragmentActivity {private TabLayout tabLayout;private ViewPager viewPager;private String[] titles = {"黄蓉", "郭靖", "杨过", "小龙女", "尹志平", "金轮法王", "收到货就收到货圣诞节"};private TextView textView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tabLayout = (TabLayout) findViewById(R.id.tabLayout);viewPager = (ViewPager) findViewById(R.id.viewPager);FramentAdapter framentAdapter = new FramentAdapter(getSupportFragmentManager(), titles);viewPager.setAdapter(framentAdapter);tabLayout.setupWithViewPager(viewPager);tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);}}
viewPager.setAdapter(framentAdapter);这行代码必须在下面这行代码之前。有兴趣的可以看下源码。 tabLayout.setupWithViewPager(viewPager);

另外 tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);给tablayout设置了这种模式,mode有两种,这种模式大概的意思是,我内容很多的时候,可以使tab平铺滑动。
很多时候我们需要自己自定义样式或者要自定义我们的tab。
自定义样式:
需要在Style文件下添加自己的样式,然后应用就好了,例如;
<style name="MyCustomTabLayout" parent="Widget.Design.TabLayout"><item name="tabIndicatorColor">?attr/colorAccent</item><item name="tabIndicatorHeight">2dp</item><item name="tabPaddingStart">12dp</item><item name="tabPaddingEnd">12dp</item><item name="tabBackground">?attr/selectableItemBackground</item><item name="tabTextAppearance">@style/MyCustomTabTextAppearance</item><item name="tabSelectedTextColor">?android:textColorPrimary</item></style><style name="MyCustomTabTextAppearance" parent="TextAppearance.Design.Tab"><item name="android:textSize">14sp</item><item name="android:textColor">?android:textColorSecondary</item><item name="textAllCaps">true</item></style>
另外一种就是需要添加我们自定义的View:
首先写要定义的布局文件;
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:id="@id/textView"android:layout_width="wrap_content"android:layout_height="wrap_content"android:gravity="center"/><TextViewandroid:layout_width="10dp"android:layout_height="10dp"android:background="@drawable/bg_text" /></LinearLayout>
然后稍微修改下FragmentPagerAdapter的代码
 public class FramentAdapter extends FragmentPagerAdapter {private String[] titles;public FramentAdapter(FragmentManager fm, String[] titles) {super(fm);this.titles = titles;}@Overridepublic Fragment getItem(int position) {return PageFragment.newInstace(position,titles);}@Overridepublic int getCount() {return titles.length;}@Overridepublic CharSequence getPageTitle(int position) {return null;}}
最后看下怎么在MainActivity中使用。
public class MainActivity extends FragmentActivity {private TabLayout tabLayout;private ViewPager viewPager;private String[] titles = {"黄蓉", "郭靖", "杨过", "小龙女", "尹志平", "金轮法王", "收到货就收到货圣诞节"};private TextView textView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tabLayout = (TabLayout) findViewById(R.id.tabLayout);viewPager = (ViewPager) findViewById(R.id.viewPager);FramentAdapter framentAdapter = new FramentAdapter(getSupportFragmentManager(), titles);viewPager.setAdapter(framentAdapter);tabLayout.setupWithViewPager(viewPager);tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);for (int i = 0; i < tabLayout.getTabCount(); i++) {TabLayout.Tab tab = tabLayout.getTabAt(i);tab.setCustomView(getTabView(i));}}private View getTabView(int position) {View view = View.inflate(this, R.layout.item_tab_view, null);textView = (TextView) view.findViewById(R.id.textView);textView.setText(titles[position]);return view;}}
到这里就结束了TabLayout的使用。放下源码:Tablayout的使用
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。