使用自定义RadioButton和ViewPager实现TabHost效果和带滑动的页卡效果。

在工作中又很多需求都不是android系统自带的控件可以达到效果的，内置的TabHost就是，只能达到简单的效果 ，所以这个时候就要自定义控件来达到效果：这个效果就是： 使用自定义RadioButton和ViewPager实现TabHost带滑动的页卡效果。

   参考自http://www.apkbus.com/android-86125-1-1.html 

   这篇文章技术含量一般，大家别见笑。源码我以测试，在底部可下载。
   好了先上效果图：

以下是实现步骤：        

1、准备自定义RadioButton控件的样式图片等，就是准备配置文件：

（1）、  在项目的values文件夹里面创建 attrs.xml ：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="MyRadioButton">
        <attr name="pic" format="reference" />
    </declare-styleable>
</resources>

（2）、创建 styles.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <style name="radioButtonStyle">
        <item name="android:button">@null</item>
        <item name="android:textSize">12dip</item>
        <item name="android:gravity">center_horizontal|bottom</item>
        <item name="android:paddingBottom">5dip</item>
    </style>
 
</resources>

（3）、把中文定义在string.xml里：

<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <string name="hello">Hello World, MainAct!</string>
        <string name="app_name">TabHost</string>
        <string name="home">大厅</string>
        <string name="account">用户</string>
        <string name="beanExchange">玩具</string>
        <string name="winAcciche">公告</string>
        <string name="more">更多</string>
 
</resources>

（4）、    创建MyRadioButton类继承RadioButton：

package com.dome.viewer.widget;
 
import com.dome.viewer.R;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.NinePatchDrawable;
import android.util.AttributeSet;
import android.widget.RadioButton;
 
 
public class MyRadioButton extends RadioButton {
 
        private Drawable drawable;
 
        public MyRadioButton(Context context, AttributeSet attrs) {
                super(context, attrs);
                TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.MyRadioButton);
                drawable = a.getDrawable(R.styleable.MyRadioButton_pic);
        }
        //Drawable转换成Bitmap
        private Bitmap drawable2Bitmap(Drawable drawable) {
                if (drawable instanceof BitmapDrawable) {
                        return ((BitmapDrawable) drawable).getBitmap();
                } else if (drawable instanceof NinePatchDrawable) {
                        Bitmap bitmap = Bitmap
                                        .createBitmap(
                                                        drawable.getIntrinsicWidth(),
                                                        drawable.getIntrinsicHeight(),
                                                        drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
                                                                        : Bitmap.Config.RGB_565);
                        Canvas canvas = new Canvas(bitmap);
                        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
                        drawable.draw(canvas);
                        return bitmap;
                } else {
                        return null;
                }
        }
 
        @Override
        protected void onDraw(Canvas canvas) {
                super.onDraw(canvas);
                Bitmap image = drawable2Bitmap(drawable);
                if (image != null) {
                        Paint pt = new Paint();
                        pt.setARGB(255, 66, 66, 66);
                        // 消除锯齿
                        pt.setAntiAlias(true);
                        // 居中显示图片
                        int imageX = (int) (this.getWidth() - image.getWidth()) / 2;
                        canvas.drawBitmap(image, imageX, 2, pt);
                        pt.setARGB(255, 255, 255, 255);
                }
        }
}

（5）、为Activity准备布局文件，命名为：tabhost.xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:attrstest="http://schemas.android.com/apk/res/com.dome.viewer"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/bg" >
 
    <RelativeLayout
        android:id="@+id/title"
        android:layout_width="fill_parent"
        android:layout_height="50dip"
        android:background="@drawable/bg_navigation" >
 
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_centerVertical="true"
            android:layout_marginLeft="5dip"
            android:gravity="center"
            android:text="首页"
            android:textSize="25dip" />
    </RelativeLayout>
 
    <android.support.v4.view.ViewPager
        android:id="@+id/vPager"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_gravity="center"
        android:paddingBottom="55dip"
        android:persistentDrawingCache="animation" />
 
    <RadioGroup
        android:id="@+id/rg_main_btns"
        android:layout_width="fill_parent"
        android:layout_height="50dip"
        android:layout_alignParentBottom="true"
        android:layout_gravity="bottom"
        android:background="@drawable/bg_navigation"
        android:gravity="center_horizontal"
        android:orientation="horizontal" >
 
        <com.dome.viewer.widget.MyRadioButton
            android:id="@+id/buyHomeTab"
            style="@style/radioButtonStyle"
            android:layout_width="60dip"
            android:layout_height="50dip"
            android:background="@drawable/navigation_item"
            android:checked="true"
            attrstest:pic="@drawable/gcdt"
            android:text="@string/home" />
 
        <com.dome.viewer.widget.MyRadioButton
            android:id="@+id/winAfficheTab"
            style="@style/radioButtonStyle"
            android:layout_width="60dip"
            android:layout_height="50dip"
            android:background="@drawable/navigation_item"
            android:button="@null"
            attrstest:pic="@drawable/kjgg"
            android:text="@string/winAcciche" />
 
        <com.dome.viewer.widget.MyRadioButton
            android:id="@+id/integralTab"
            style="@style/radioButtonStyle"
            android:layout_width="65dip"
            android:layout_height="50dip"
            android:background="@drawable/navigation_item"
            attrstest:pic="@drawable/jfdh"
            android:text="@string/beanExchange" />
 
        <com.dome.viewer.widget.MyRadioButton
            android:id="@+id/accountTab"
            style="@style/radioButtonStyle"
            android:layout_width="60dip"
            android:layout_height="50dip"
            android:background="@drawable/navigation_item"
            attrstest:pic="@drawable/yhzx"
            android:text="@string/account" />
 
        <com.dome.viewer.widget.MyRadioButton
            android:id="@+id/moreTab"
            style="@style/radioButtonStyle"
            android:layout_width="60dip"
            android:layout_height="50dip"
            android:background="@drawable/navigation_item"
            attrstest:pic="@drawable/more"
            android:text="@string/more" />
    </RadioGroup>
 
</RelativeLayout>

（6）、创建TabHostActivity：　　

package com.dome.viewer;
 
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.RadioGroup;
 
public class TabHostActivity extends Activity {
    
         
        @Override
        protected void onStart() {
                super.onStart();
        }
 
        private RadioGroup radioGroup;
         
        // 页卡内容
        private ViewPager mPager;
        // Tab页面列表
        private List<View> listViews;
        // 当前页卡编号
        private LocalActivityManager manager = null;
         
        private MyPagerAdapter mpAdapter = null;
        private int index;
         
        // 更新intent传过来的值
        @Override
        protected void onNewIntent(Intent intent) {
                setIntent(intent);
        }
         
        @Override
        protected void onSaveInstanceState(Bundle outState) {
            
        }
        @Override
        public void onBackPressed() {
                Log.i("","onBackPressed()");
                super.onBackPressed();
        }
        @Override
        protected void onPause() {
                Log.i("","onPause()");
                super.onPause();
        }
         
        @Override
        protected void onStop() {
                Log.i("","onStop()");
                super.onStop();
        }
 
        @Override
        protected void onDestroy() {
                Log.i("","onDestroy()");
                super.onDestroy();
        }
         
         
        @Override
        protected void onResume() {
                super.onResume();
                 
                if(getIntent() != null){
                        index = getIntent().getIntExtra("index", 0);
                        mPager.setCurrentItem(index);
                        setIntent(null);
                }else{
                        if(index < 4){
                                index = index+1;
                                mPager.setCurrentItem(index);
                                index = index -1;
                                mPager.setCurrentItem(index);
                                 
                        }else if(index == 4){
                                index= index-1; 
                                mPager.setCurrentItem(index);
                                index = index +1;
                                mPager.setCurrentItem(index);
                        }
                }
        }
         
        @Override
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                requestWindowFeature(Window.FEATURE_NO_TITLE);
                setContentView(R.layout.tabhost);
                mPager = (ViewPager) findViewById(R.id.vPager);
                manager = new LocalActivityManager(this, true);
                manager.dispatchCreate(savedInstanceState);
                InitViewPager();
                radioGroup = (RadioGroup) this.findViewById(R.id.rg_main_btns);
                radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
                                        public void onCheckedChanged(RadioGroup group, int checkedId) {
                                                switch (checkedId) {
                                                 
                                                case R.id.buyHomeTab:
                                                        index = 0;
                                                        listViews.set(0, getView("A", new Intent(TabHostActivity.this, OneDomeActivity.class)));
                                                        mpAdapter.notifyDataSetChanged();
                                                        mPager.setCurrentItem(0);
                                                        break;
                                                         
                                                case R.id.winAfficheTab:
                                                        index = 1;
                                                        listViews.set(1, getView("B", new Intent(TabHostActivity.this, TowDomeActivity.class)));
                                                        mpAdapter.notifyDataSetChanged();
                                                        mPager.setCurrentItem(1);
                                                        break;
                                                         
                                                case R.id.integralTab:
                                                        index = 2;
                                                        listViews.set(2, getView("C", new Intent(TabHostActivity.this, ThreeDomeActivity.class)));
                                                        mpAdapter.notifyDataSetChanged();
                                                        mPager.setCurrentItem(2);
                                                        break;
                                                         
                                                case R.id.accountTab:
                                                        index = 3;
                                                        listViews.set(3, getView("D", new Intent(TabHostActivity.this, FourDomeActivity.class)));
                                                        mpAdapter.notifyDataSetChanged();
                                                        mPager.setCurrentItem(3);
                                                        break;
                                                         
                                                case R.id.moreTab:
                                                        index = 4;
                                                        listViews.set(4, getView("E", new Intent(TabHostActivity.this, FiveDomeActivity.class)));
                                                        mpAdapter.notifyDataSetChanged();
                                                        mPager.setCurrentItem(4);
                                                        break;
                                                default:
                                                        break;
                                                }
                                        }
                                });
        }
         
        /**
         * 初始化ViewPager
         */
        private void InitViewPager() {
                Intent intent = null;
                listViews = new ArrayList<View>();
                mpAdapter = new MyPagerAdapter(listViews);
                intent = new Intent(TabHostActivity.this, OneDomeActivity.class);
                listViews.add(getView("A", intent));
                intent = new Intent(TabHostActivity.this, TowDomeActivity.class);
                listViews.add(getView("B", intent));
                intent = new Intent(TabHostActivity.this, ThreeDomeActivity.class);
                listViews.add(getView("C", intent));
                intent = new Intent(TabHostActivity.this, FourDomeActivity.class);
                listViews.add(getView("D", intent));
                intent = new Intent(TabHostActivity.this, FiveDomeActivity.class);
                listViews.add(getView("E", intent));
                mPager.setOffscreenPageLimit(0);
                mPager.setAdapter(mpAdapter);
                mPager.setCurrentItem(0);
                mPager.setOnPageChangeListener(new MyOnPageChangeListener());
        }
 
        /**
         * ViewPager适配器
         */
        public class MyPagerAdapter extends PagerAdapter {
                public List<View> mListViews;
 
                public MyPagerAdapter(List<View> mListViews) {
                        this.mListViews = mListViews;
                }
 
                @Override
                public void destroyItem(View arg0, int arg1, Object arg2) {
                        ((ViewPager) arg0).removeView(mListViews.get(arg1));
                }
 
                @Override
                public void finishUpdate(View arg0) {
                }
 
                @Override
                public int getCount() {
                        return mListViews.size();
                }
 
                @Override
                public Object instantiateItem(View arg0, int arg1) {
                        ((ViewPager) arg0).addView(mListViews.get(arg1), 0);
                        return mListViews.get(arg1);
                }
 
                @Override
                public boolean isViewFromObject(View arg0, Object arg1) {
                        return arg0 == (arg1);
                }
 
                @Override
                public void restoreState(Parcelable arg0, ClassLoader arg1) {
                }
 
                @Override
                public Parcelable saveState() {
                        return null;
                }
 
                @Override
                public void startUpdate(View arg0) {
                }
        }
 
        /**
         * 页卡切换监听，ViewPager改变同样改变TabHost内容
         */
        public class MyOnPageChangeListener implements OnPageChangeListener {
 
                public void onPageSelected(int arg0) {
                        manager.dispatchResume();
                        switch (arg0) {
                        case 0:
                                index = 0;
                                radioGroup.check(R.id.buyHomeTab);
                                listViews.set(0, getView("A", new Intent(TabHostActivity.this, OneDomeActivity.class)));
                                mpAdapter.notifyDataSetChanged();
                                break;
                        case 1:
                                index = 1;
                                radioGroup.check(R.id.winAfficheTab);
                                listViews.set(1, getView("B", new Intent(TabHostActivity.this, TowDomeActivity.class)));
                                mpAdapter.notifyDataSetChanged();
                                break;
                        case 2:
                                index = 2;
                                radioGroup.check(R.id.integralTab);
                                listViews.set(2, getView("C", new Intent(TabHostActivity.this, ThreeDomeActivity.class)));
                                mpAdapter.notifyDataSetChanged();
                                break;
                        case 3:
                                index = 3;
                                radioGroup.check(R.id.accountTab);
                                listViews.set(3, getView("D", new Intent(TabHostActivity.this, FourDomeActivity.class)));
                                mpAdapter.notifyDataSetChanged();
                                break;
                        case 4:
                                index = 4;
                                radioGroup.check(R.id.moreTab);
                                listViews.set(4, getView("E", new Intent(TabHostActivity.this, FiveDomeActivity.class)));
                                mpAdapter.notifyDataSetChanged();
                                break;
                        }
                }
                public void onPageScrolled(int arg0, float arg1, int arg2) {
                }
                public void onPageScrollStateChanged(int arg0) {
                }
        }
 
        private View getView(String id, Intent intent) {
                return manager.startActivity(id, intent).getDecorView();
        }
         
}

（7）、然后依次创建5个Activity作为页卡,和创建5个xml作为Activity的布局文件，如图：　　

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源码下载：https://files.cnblogs.com/feifei1010/TabHostDome.rar