Android实现顶部底部双导航界面功能
最近想弄一个双导航功能,查看了许多资料,总算是实现了功能,这边就算是给自己几个笔记吧!
先来看看效果
那么就开始实现了!
底部导航栏我选择用FragmentTabHost+Fragment来实现,这个方法我觉得挺好用的,代码量也不多
首先是开始的activity_main.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | android:layout_width = "match_parent" android:layout_height = "match_parent" tools:context = "${relativePackage}.${activityClass}" > < FrameLayout android:id = "@+id/main_view" android:layout_width = "match_parent" android:layout_height = "match_parent" android:layout_above = "@+id/main_tab" android:layout_alignParentLeft = "true" android:layout_alignParentTop = "true" > </ FrameLayout > < view android:id = "@+id/main_tab" android:layout_width = "match_parent" android:layout_height = "50dp" android:layout_alignParentBottom = "true" android:layout_alignParentLeft = "true" class = "android.support.v4.app.FragmentTabHost" /> </ RelativeLayout > |
其中我是直接拉的view所以是形成的FragmentTabHost
也可以直接在xml文件里面写
<android.support.v4.view.FragmentTabHost >
< /android.support.v4.view.FragmentTabHost>
这xml文件就一个view加一个tab view用来显示碎片,tab用来放置底部按钮的数量
再来是tab_foot.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | <? xml version = "1.0" encoding = "utf-8" ?> android:layout_width = "match_parent" android:layout_height = "match_parent" android:background = "#F6F6F6" android:gravity = "center" android:orientation = "vertical" > < ImageView android:id = "@+id/foot_iv" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:src = "@drawable/home1" /> < TextView android:id = "@+id/foot_tv" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_marginTop = "3dp" android:text = "首页" android:textColor = "@color/tab_color" /> </ LinearLayout > |
这是每个底部按钮的布局设置的xml文件
显示效果。
再来是MainActivity的代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | package com.gjn.mynavigation; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentTabHost; import android.view.LayoutInflater; import android.view.View; import android.view.Window; import android.widget.ImageView; import android.widget.TabWidget; import android.widget.TextView; import android.widget.TabHost.OnTabChangeListener; import android.widget.TabHost.TabSpec; public class MainActivity extends FragmentActivity implements OnTabChangeListener { private FragmentTabHost mTabHost; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main); //初始化FragmentTabHost initHost(); //初始化底部导航栏 initTab(); //默认选中 mTabHost.onTabChanged(TabDb.getTabsTxt()[ 0 ]); } private void initTab() { String[] tabs = TabDb.getTabsTxt(); for ( int i = 0 ; i < tabs.length; i++) { //新建TabSpec TabSpec tabSpec = mTabHost.newTabSpec(TabDb.getTabsTxt()[i]); //设置view View view = LayoutInflater.from( this ).inflate(R.layout.tabs_foot, null ); ((TextView) view.findViewById(R.id.foot_tv)).setText(TabDb.getTabsTxt()[i]); ((ImageView) view.findViewById(R.id.foot_iv)).setImageResource(TabDb.getTabsImg()[i]); tabSpec.setIndicator(view); //加入TabSpec mTabHost.addTab(tabSpec,TabDb.getFramgent()[i], null ); } } /*** * 初始化Host */ private void initHost() { mTabHost = (FragmentTabHost) findViewById(R.id.main_tab); //调用setup方法 设置view mTabHost.setup( this , getSupportFragmentManager(),R.id.main_view); //去除分割线 mTabHost.getTabWidget().setDividerDrawable( null ); //监听事件 mTabHost.setOnTabChangedListener( this ); } @Override public void onTabChanged(String arg0) { //从分割线中获得多少个切换界面 TabWidget tabw = mTabHost.getTabWidget(); for ( int i = 0 ; i < tabw.getChildCount(); i++) { View v = tabw.getChildAt(i); TextView tv = (TextView) v.findViewById(R.id.foot_tv); ImageView iv = (ImageView) v.findViewById(R.id.foot_iv); //修改当前的界面按钮颜色图片 if (i == mTabHost.getCurrentTab()) { tv.setTextColor(getResources().getColor(R.color.tab_light_color)); iv.setImageResource(TabDb.getTabsImgLight()[i]); } else { tv.setTextColor(getResources().getColor(R.color.tab_color)); iv.setImageResource(TabDb.getTabsImg()[i]); } } } } |
其中TabDb类是用来设置导航栏的数据和图片切换时候的资源
以下是TabDb类
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | package com.gjn.mynavigation; public class TabDb { /*** * 获得底部所有项 */ public static String[] getTabsTxt() { String[] tabs = { "首页" , "交易" , "地点" , "我的" }; return tabs; } /*** * 获得所有碎片 */ public static Class[] getFramgent(){ Class[] cls = {OneFm. class ,TwoFm. class ,ThreeFm. class ,FourFm. class }; return cls ; } /*** * 获得所有点击前的图片 */ public static int [] getTabsImg(){ int [] img = {R.drawable.home1,R.drawable.glod1,R.drawable.xc1,R.drawable.user1}; return img ; } /*** * 获得所有点击后的图片 */ public static int [] getTabsImgLight(){ int [] img = {R.drawable.home2,R.drawable.glod2,R.drawable.xc2,R.drawable.user2}; return img ; } } |
到此,底部导航栏就算是完全实现了。
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现在来实现顶部导航栏,看了许多最后使用了RadioGroup+ViewPager来实现
首先是为第一个碎片设计一个xml布局
fm_one.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | <? xml version = "1.0" encoding = "utf-8" ?> android:layout_width = "match_parent" android:layout_height = "match_parent" android:orientation = "vertical" > < HorizontalScrollView android:id = "@+id/one_hv" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:scrollbars = "none" > < RadioGroup android:id = "@+id/one_rg" android:layout_width = "match_parent" android:layout_height = "match_parent" android:orientation = "horizontal" > </ RadioGroup > </ HorizontalScrollView > < view android:id = "@+id/one_view" android:layout_width = "match_parent" android:layout_height = "0dp" android:layout_weight = "1" class = "android.support.v4.view.ViewPager" /> </ LinearLayout > |
设置顶部导航栏和显示view
之后吧导航栏的每个项的布局
tab_rb.xml
1 2 3 4 5 6 7 8 9 10 11 12 | <? xml version = "1.0" encoding = "utf-8" ?> android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:background = "@drawable/tab_rb_selector" android:button = "@null" android:paddingBottom = "10dp" android:paddingLeft = "15dp" android:paddingRight = "15dp" android:paddingTop = "10dp" android:text = "今日" > </ RadioButton > |
其中设置selector文件来控制点击和未点击的状态
tab_rb_selector.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | <? xml version = "1.0" encoding = "utf-8" ?> <!-- 点击 --> < item android:state_checked = "true" > < layer-list > < item > < shape android:shape = "rectangle" > < stroke android:width = "5dp" android:color = "@color/tab_light_color" /> </ shape > </ item > < item android:bottom = "5dp" > < shape android:shape = "rectangle" > < solid android:color = "#fff" /> </ shape > </ item > </ layer-list > </ item > <!-- 默认 --> < item > < shape > < solid android:color = "#fafafa" /> </ shape > </ item > </ selector > |
设置了点击和默认的时候的显示状态
最后来实现OneFm类
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | package com.gjn.mynavigation; import java.util.ArrayList; import java.util.List; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.util.DisplayMetrics; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.HorizontalScrollView; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.RadioGroup.LayoutParams; import android.widget.RadioGroup.OnCheckedChangeListener; public class OneFm extends Fragment implements OnPageChangeListener { private View view; private RadioGroup rg_; private ViewPager vp_; private HorizontalScrollView hv_; private List<Fragment> newsList = new ArrayList<Fragment>(); private OneFmAdapter adapter; @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { if (view == null ) { //初始化view view = inflater.inflate(R.layout.fm_one, container, false ); rg_ = (RadioGroup) view.findViewById(R.id.one_rg); vp_ = (ViewPager) view.findViewById(R.id.one_view); hv_ = (HorizontalScrollView) view.findViewById(R.id.one_hv); //设置RadioGroup点击事件 rg_.setOnCheckedChangeListener( new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int id) { vp_.setCurrentItem(id); } }); //初始化顶部导航栏 initTab(inflater); //初始化viewpager initView(); } /* * 底部导航栏切换后 由于没有销毁顶部设置导致如果没有重新设置view * 导致底部切换后切回顶部页面数据会消失等bug * 以下设置每次重新创建view即可 */ ViewGroup parent = (ViewGroup) view.getParent(); if (parent != null) { parent.removeView(view); } return view; } /*** * 初始化viewpager */ private void initView() { List<HTab> hTabs = HTabDb.getSelected(); for (int i = 0; i < hTabs.size(); i++) { OneFm1 fm1 = new OneFm1(); Bundle bundle = new Bundle(); bundle.putString("name", hTabs.get(i).getName()); fm1.setArguments(bundle); newsList.add(fm1); } //设置viewpager适配器 adapter = new OneFmAdapter(getActivity().getSupportFragmentManager(),newsList); vp_.setAdapter(adapter); //两个viewpager切换不重新加载 vp_.setOffscreenPageLimit(2); //设置默认 vp_.setCurrentItem(0); //设置viewpager监听事件 vp_.setOnPageChangeListener(this); } /*** * 初始化头部导航栏 * @param inflater */ private void initTab(LayoutInflater inflater) { List<HTab> hTabs = HTabDb.getSelected(); for (int i = 0; i < hTabs.size(); i++) { //设置头部项布局初始化数据 RadioButton rbButton = (RadioButton) inflater.inflate(R.layout.tab_rb, null); rbButton.setId(i); rbButton.setText(hTabs.get(i).getName()); LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); //加入RadioGroup rg_.addView(rbButton,params); } //默认点击 rg_.check(0); } @Override public void onPageScrollStateChanged(int arg0) { } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageSelected(int id) { setTab(id); } /*** * 页面跳转切换头部偏移设置 * @param id */ private void setTab( int id) { RadioButton rbButton = (RadioButton) rg_.getChildAt(id); //设置标题被点击 rbButton.setChecked( true ); //偏移设置 int left = rbButton.getLeft(); int width = rbButton.getMeasuredWidth(); DisplayMetrics metrics = new DisplayMetrics(); getActivity().getWindowManager().getDefaultDisplay().getMetrics(metrics); int screenWidth = metrics.widthPixels; //移动距离= 左边的位置 + button宽度的一半 - 屏幕宽度的一半 int len = left + width / 2 - screenWidth / 2 ; //移动 hv_.smoothScrollTo(len, 0 ); } } |
其中有两个数据类和一个碎片类
数据类
HTab.java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | package com.gjn.mynavigation; /*** * 头部Tab属性 * */ public class HTab { private String name; public HTab(String name) { super (); this .setName(name); } public String getName() { return name; } public void setName(String name) { this .name = name; } } |
HTabDb.java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | package com.gjn.mynavigation; import java.util.ArrayList; import java.util.List; public class HTabDb { private static final List<HTab> Selected = new ArrayList<HTab>(); static { Selected.add( new HTab( "今日" )); Selected.add( new HTab( "头条" )); Selected.add( new HTab( "娱乐" )); Selected.add( new HTab( "财经" )); Selected.add( new HTab( "军事" )); Selected.add( new HTab( "科技" )); Selected.add( new HTab( "时尚" )); Selected.add( new HTab( "体育" )); } /*** * 获得头部tab的所有项 */ public static List<HTab> getSelected() { return Selected; } } |
碎片类
OneFm1.java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | package com.gjn.mynavigation; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; public class OneFm1 extends Fragment { private String name; @Override public void setArguments(Bundle args) { name = args.getString( "name" ); } @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment, container, false ); ((TextView) view.findViewById(R.id.fm_text)).setText(name); return view; } } |
这样就把顶部的导航栏加入到了第一个fragment里面并且实现了切换功能
最后把fragment.xml贴下,就是每个碎片最默认的显示页面罢了
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <? xml version = "1.0" encoding = "utf-8" ?> android:layout_width = "match_parent" android:layout_height = "match_parent" android:gravity = "center" android:orientation = "vertical" > < TextView android:id = "@+id/fm_text" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "Large Text" android:textAppearance = "?android:attr/textAppearanceLarge" /> </ LinearLayout > |
总结:
算是一个笔记记录吧!一段时间没更新了,由于刚毕业断了一个时间,走走停停留下一些自己的记录,就怕自己以后要写忘了。
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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。
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