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Android MarginDesign控件TabLayout导航栏使用详解

2019-12-12 03:59:07
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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.TabLayout  android:id="@+id/tabLayout"  android:layout_width="match_parent"  style="@style/MyCustomTabLayout"  android:layout_height="wrap_content" /><android.support.v4.view.ViewPager  android: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"><TextView  android: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"><TextView  android:id="@id/textView"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:gravity="center"  /><TextView  android: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武林网。

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