1.viewpager

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <android.support.v4.view.ViewPager
        android:id="@+id/vp_guide"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <Button
        android:id="@+id/btn_start"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="60dp"
        android:background="@drawable/btn_guide_selector"
        android:padding="5dp"//padding是从内往外撑
        android:text="开始体验"
        android:visibility="invisible"
        android:textColor="@drawable/btn_guide_text_selector" />
    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="20dp" >
        <LinearLayout
            android:id="@+id/ll_point_group"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
        </LinearLayout>
        <View
            android:id="@+id/view_red_point"
            android:layout_width="10dp"
            android:layout_height="10dp"
            android:background="@drawable/shape_point_red" />
    </RelativeLayout>
</RelativeLayout>

//新建drawable目录，背景状态选择器
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/button_red_pressed" android:state_pressed="true"/>
    <item android:drawable="@drawable/button_red_normal"/>
</selector>

//drawable目录下，形状选择器
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval" >
    <solid android:color="#f00" />
</shape>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval" >
    <solid android:color="@android:color/darker_gray" />
</shape>

/**
 * 新手引导
 * 
 * @author Kevin
 * 
 */
public class GuideActivity extends Activity {
	private static final int[] mImageIds = new int[] { R.drawable.guide_1,
			R.drawable.guide_2, R.drawable.guide_3 };
	private ViewPager vpGuide;
	private ArrayList<ImageView> mImageViewList;
	private LinearLayout llPointGroup;// 引导圆点的父控件
	private int mPointWidth;// 圆点间的距离
	private View viewRedPoint;// 小红点
	private Button btnStart;// 开始体验
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题
		setContentView(R.layout.activity_guide);
		vpGuide = (ViewPager) findViewById(R.id.vp_guide);
		llPointGroup = (LinearLayout) findViewById(R.id.ll_point_group);
		viewRedPoint = findViewById(R.id.view_red_point);
		btnStart = (Button) findViewById(R.id.btn_start);
		btnStart.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// 更新sp, 表示已经展示了新手引导
				PrefUtils.setBoolean(GuideActivity.this,
						"is_user_guide_showed", true);
				// 跳转主页面
				startActivity(new Intent(GuideActivity.this, MainActivity.class));
				finish();
			}
		});
		initViews();
		vpGuide.setAdapter(new GuideAdapter());
		vpGuide.setOnPageChangeListener(new GuidePageListener());
	}
	/**
	 * 初始化界面
	 */
	private void initViews() {
		mImageViewList = new ArrayList<ImageView>();
		// 初始化引导页的3个页面
		for (int i = 0; i < mImageIds.length; i++) {
			ImageView image = new ImageView(this);
			image.setBackgroundResource(mImageIds[i]);// 设置引导页背景,注意是Resource
			mImageViewList.add(image);
		}
		// 初始化引导页的小圆点
		for (int i = 0; i < mImageIds.length; i++) {
			View point = new View(this);
			point.setBackgroundResource(R.drawable.shape_point_gray);// 设置引导页默认圆点
			LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(10, 10);//通过params设置布局的参数，括号里是宽高
			if (i > 0) {
				params.leftMargin = 10;// 设置圆点间隔
			}
			point.setLayoutParams(params);// 设置圆点的大小
			llPointGroup.addView(point);// 将圆点添加给线性布局
		}
		// 获取视图树, 对layout结束事件进行监听,获取小灰点的距离
		llPointGroup.getViewTreeObserver().addOnGlobalLayoutListener(
				new OnGlobalLayoutListener() {
					// 当layout执行结束后回调此方法
					@Override
					public void onGlobalLayout() {
						System.out.println("layout 结束");
						llPointGroup.getViewTreeObserver()
								.removeGlobalOnLayoutListener(this);
						mPointWidth = llPointGroup.getChildAt(1).getLeft()
								- llPointGroup.getChildAt(0).getLeft();
						System.out.println("圆点距离:" + mPointWidth);
					}
				});
	}
	/**
	 * ViewPager数据适配器
	 * 
	 * @author Kevin
	 * 
	 */
	class GuideAdapter extends PagerAdapter {
		@Override
		public int getCount() {
			return mImageIds.length;
		}
		@Override
		public boolean isViewFromObject(View arg0, Object arg1) {
			return arg0 == arg1;
		}
		@Override
		public Object instantiateItem(ViewGroup container, int position) {
			container.addView(mImageViewList.get(position));
			return mImageViewList.get(position);
		}
		@Override
		public void destroyItem(ViewGroup container, int position, Object object) {
			container.removeView((View) object);
		}
	}
	/**
	 * viewpager的滑动监听
	 * 
	 * @author Kevin
	 * 
	 */
	class GuidePageListener implements OnPageChangeListener {
		// 滑动事件
		@Override
		public void onPageScrolled(int position, float positionOffset,
				int positionOffsetPixels) {
			// System.out.println("当前位置:" + position + ";百分比:" + positionOffset
			// + ";移动距离:" + positionOffsetPixels);
			int len = (int) (mPointWidth * positionOffset) + position
					* mPointWidth;
			RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) viewRedPoint
					.getLayoutParams();// 获取当前红点的布局参数
			params.leftMargin = len;// 设置左边距
			viewRedPoint.setLayoutParams(params);// 重新给小红点设置布局参数
		}
		// 某个页面被选中
		@Override
		public void onPageSelected(int position) {
			if (position == mImageIds.length - 1) {// 最后一个页面
				btnStart.setVisibility(View.VISIBLE);// 显示开始体验的按钮
			} else {
				btnStart.setVisibility(View.INVISIBLE);
			}
		}
		// 滑动状态发生变化
		@Override
		public void onPageScrollStateChanged(int state) {
		}
	}
}

public class PrefUtils {
	public static final String PREF_NAME = "config";
	public static boolean getBoolean(Context ctx, String key,
			boolean defaultValue) {
		SharedPreferences sp = ctx.getSharedPreferences(PREF_NAME,
				Context.MODE_PRIVATE);
		return sp.getBoolean(key, defaultValue);
	}
	public static void setBoolean(Context ctx, String key, boolean value) {
		SharedPreferences sp = ctx.getSharedPreferences(PREF_NAME,
				Context.MODE_PRIVATE);
		sp.edit().putBoolean(key, value).commit();
	}
}

/**
 * 闪屏页
 */
public class SplashActivity extends Activity {
	RelativeLayout rlRoot;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_splash);
		rlRoot = (RelativeLayout) findViewById(R.id.rl_root);
		startAnim();
		//LibUtils.doSomething();
		//rlRoot.setBackgroundResource(R.drawable.newscenter_press);
	}
	/**
	 * 开启动画
	 */
	private void startAnim() {
		// 动画集合
		AnimationSet set = new AnimationSet(false);
		// 旋转动画
		RotateAnimation rotate = new RotateAnimation(0, 360,
				Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
				0.5f);
		rotate.setDuration(1000);// 动画时间
		rotate.setFillAfter(true);// 保持动画状态
		// 缩放动画
		ScaleAnimation scale = new ScaleAnimation(0, 1, 0, 1,
				Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
				0.5f);
		scale.setDuration(1000);// 动画时间
		scale.setFillAfter(true);// 保持动画状态
		// 渐变动画
		AlphaAnimation alpha = new AlphaAnimation(0, 1);
		alpha.setDuration(2000);// 动画时间
		alpha.setFillAfter(true);// 保持动画状态
		set.addAnimation(rotate);
		set.addAnimation(scale);
		set.addAnimation(alpha);
		// 设置动画监听
		set.setAnimationListener(new AnimationListener() {
			@Override
			public void onAnimationStart(Animation animation) {
			}
			@Override
			public void onAnimationRepeat(Animation animation) {
			}
			// 动画执行结束
			@Override
			public void onAnimationEnd(Animation animation) {
				jumpNextPage();
			}
		});
		rlRoot.startAnimation(set);
	}
	/**
	 * 跳转下一个页面
	 */
	private void jumpNextPage() {
		// 判断之前有没有显示过新手引导
		boolean userGuide = PrefUtils.getBoolean(this, "is_user_guide_showed",
				false);
		if (!userGuide) {
			// 跳转到新手引导页
			startActivity(new Intent(SplashActivity.this, GuideActivity.class));
		} else {
			startActivity(new Intent(SplashActivity.this, MainActivity.class));
		}
		finish();
	}
}