使用自定義RadioButton和ViewPager實現TabHost效果和帶滑動的頁卡效果。

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

?? 這篇文章技術含量一般，大家別見笑。源碼我以測試，在底部可下載。 ?? 好了先上效果圖：

以下是實現步驟：???????

1、準備自定義RadioButton控件的樣式圖片等，就是準備配置文件：
（1）、? 在項目的values文件夾里面創建 attrs.xml ：

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

（2）、創建 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）、把中文定義在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">大廳</string>
??????? <string name="account">用戶</string>
??????? <string name="beanExchange">玩具</string>
??????? <string name="winAcciche">公告</string>
??????? <string name="more">更多</string>
</resources>

（4）、??? 創建MyRadioButton類繼承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轉換成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);
??????????????????????? // 消除鋸齒
??????????????????????? pt.setAntiAlias(true);
??????????????????????? // 居中顯示圖片
??????????????????????? int imageX = (int) (this.getWidth() - image.getWidth()) / 2;
??????????????????????? canvas.drawBitmap(image, imageX, 2, pt);
??????????????????????? pt.setARGB(255, 255, 255, 255);
??????????????? }
??????? }
}

（5）、為Activity準備布局文件，命名為：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="首頁"
??????????? 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）、創建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;
????????  
??????? // 頁卡內容
??????? private ViewPager mPager;
??????? // Tab頁面列表
??????? private List<View> listViews;
??????? // 當前頁卡編號
??????? private LocalActivityManager manager = null;
????????  
??????? private MyPagerAdapter mpAdapter = null;
??????? private int index;
????????  
??????? // 更新intent傳過來的值
??????? @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適配器
???????? */
??????? 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) {
??????????????? }
??????? }
??????? /**
???????? * 頁卡切換監聽，ViewPager改變同樣改變TabHost內容
???????? */
??????? 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();
??????? }
????????  
}