Android 高仿QQ 界面滑动效果

点击或者滑动切换画面，用ViewPager实现，

首先是布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
	<LinearLayout
	    android:layout_width="match_parent"
	    android:layout_height="62dip"
	    android:orientation="vertical" 
	    android:background="@drawable/top_theme_blue">
	    <LinearLayout
		    android:layout_width="match_parent"
		    android:layout_height="36dip"
		    android:orientation="horizontal" 
		    android:gravity="center_vertical">
	        <ImageView
	            android:id="@+id/main_avatar"
	            android:layout_width="32dip"
	            android:layout_height="32dip"
	            android:src="@drawable/avatar" />
		    <TextView 
		        android:id="@+id/main_nick"
	            android:layout_width="wrap_content"
	            android:layout_height="wrap_content"
	            android:textColor="#FFFFFF"
	            android:text="Vestigge"/>
		    <ImageView 
		        android:layout_width="14dip"
	            android:layout_height="14dip"
	            android:src="@drawable/status_online"/>
		</LinearLayout>
	    <LinearLayout
		    android:layout_width="match_parent"
		    android:layout_height="26dip"
		    android:orientation="horizontal" 
		    android:gravity="bottom">
		    <RadioGroup   
		        android:id="@+id/main_radiogroup"
		        android:orientation="horizontal"
		        android:paddingTop="1dp" 
		        android:layout_width="fill_parent"   
		        android:layout_height="wrap_content">  
	            <RadioButton   
	                android:id="@+id/main_radio_recent"   
	                android:checked="true"   
	                android:text="动态" 
	                android:textColor="@color/tab_text"
	                android:drawableBottom="@drawable/top_tab_selector"
	                style="@style/radio_style"/>      
	            <RadioButton   
	                android:id="@+id/main_radio_buddy" 
	                android:text="群组"
	                android:textColor="@color/tab_text" 
	                android:drawableBottom="@drawable/top_tab_selector"
	                style="@style/radio_style"/>  
	            <RadioButton   
	                android:id="@+id/main_radio_group"   
	                android:text="好友" 
	                android:textColor="@color/tab_text"
	                android:drawableBottom="@drawable/top_tab_selector"
	                style="@style/radio_style"
	                android:checked="true"/>
	            <RadioButton   
	                android:id="@+id/main_radio_trends"   
	                android:text="会话" 
	                android:textColor="@color/tab_text"
	                android:drawableBottom="@drawable/top_tab_selector"
	                style="@style/radio_style"/>
	        </RadioGroup>   
		</LinearLayout>
	</LinearLayout>
	<android.support.v4.view.ViewPager
	    android:id="@+id/main_viewpager"
	    android:layout_width="match_parent"
    	android:layout_height="match_parent" >
	</android.support.v4.view.ViewPager>   
</LinearLayout>

代码：

public class MainActivity extends ActivityGroup {
	private static final String TRENDS="动态";
	private static final String GROUP="群组";
	private static final String BUDDY="好友";
	private static final String RECENT="会话";
	private ArrayList<View> pageViews;
	private RadioGroup radioGroup;
	private ViewPager viewPager;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        
        initView();
        viewPager=(ViewPager) findViewById(R.id.main_viewpager);
        viewPager.setAdapter(new PagerAdapter(){
			public int getCount() {
				return pageViews.size();
			}
			public boolean isViewFromObject(View view, Object objcet) {
				return view==objcet;
			}
			//这里会对需要进行水平切换的页面进行了加载和初始化 android:tileMode="repeat"
			public Object instantiateItem(View view, int id) {
				((ViewPager)view).addView(pageViews.get(id));
				return pageViews.get(id);
			}
			public void destroyItem(View view, int id, Object arg2) {  
                ((ViewPager) view).removeView(pageViews.get(id));  
            }
        });
        viewPager.setCurrentItem(2);//默认显示的是好友页面
        radioGroup = (RadioGroup) findViewById(R.id.main_radiogroup);
		radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			public void onCheckedChanged(RadioGroup group, int checkedId) {
				setClick(checkedId);
			}
		});
    }
    
    void initView() {
    	pageViews=new ArrayList<View>();
    	View view1 = getLocalActivityManager().startActivity(TRENDS,
    			new Intent(this, TrendsActivity.class)).getDecorView();
    	View view2 = getLocalActivityManager().startActivity(GROUP,
    			new Intent(this, GroupActivity.class)).getDecorView();
    	View view3 = getLocalActivityManager().startActivity(BUDDY,
    			new Intent(this, BuddyActivity.class)).getDecorView();
    	View view4 = getLocalActivityManager().startActivity(RECENT,
    			new Intent(this, RecentActivity.class)).getDecorView();
    	pageViews.add(0,view1);
    	pageViews.add(1,view2);
    	pageViews.add(2,view3);
    	pageViews.add(3,view4);
    }

	public void setClick(int id) {
		switch(id){
		case R.id.main_radio_trends:
			viewPager.setCurrentItem(0);
			break;
		case R.id.main_radio_group:
			viewPager.setCurrentItem(1);
			break;
		case R.id.main_radio_buddy:
			viewPager.setCurrentItem(2);
			break;
		case R.id.main_radio_recent:
			viewPager.setCurrentItem(3);
			break;
		}
	}
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}