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：
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; }}