android ViewFlipper使用示例（注册引导页）

其实ViewFlipper工作机制很简单，如上图，就是将添加到ViewFlipper中的子View按照顺序定时的显示是其中一个子View，其他的子View设置为Gone状态。ViewFlipper页面可以静态加载，就是在xml写上就行。要Java代码添加，就是动态加载。具体动态接口可以看这个ViewFlipper的方法。

1、ViewFlipper类结构关系

下面是继承和结构关系，如下图：虽说ViewFlipper类自已方法很少：但你要记得它还有父类的方法。
其中动态加载view的方法是来自父类ViewGroup

mVfFlipper.addView(child, index);

2、该类有如下几个和动画相关的函数：

setInAnimation：设置View进入屏幕时候使用的动画，该函数有两个版本，一个接受单个参数，类型为android.view.animation.Animation；一个接受两个参数，类型为Context和int，分别为Context对象和定义Animation的resourceID。
setOutAnimation: 设置View退出屏幕时候使用的动画，参数setInAnimation函数一样。
showNext：调用该函数来显示FrameLayout里面的下一个View。
showPrevious：调用该函数来显示FrameLayout里面的上一个View。

3、ViewFlipper与viewPager区别

1、viewPager可以兼容低版本,而ViewFlipper是android4.0才引入的新控件。
2、viewPager是一页一页的,而ViewFlipper是一层一层的。都可以带动画效果。
3、ViewPager来源于google 的补充组件android-support-v4.jar，位置在androidSDK文件夹。
详细目录android-sdks\extras\android\support\ 下将android-support-v4.jar 引用到项目中注：该包需要在Android SDK Manager额外下载Extras下的Android Support package。
4、ViewPager更适用复杂的视图切换，而且Viewpager有自己的adapter，这也让其适应复杂对象，实现数据的动态加载。跟Fragment一起使用。

4、很据ViewFlipper工作机制的开发应用方面

1、做一个简单的图片浏览，也是可以的。
2、做设定好的流程类的填写注册（就例如用户注册，帮助手册，引导页面也可以）。

5、ViewPager源码

/* * Copyright (C) 2006 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package android.widget;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.content.res.TypedArray;import android.os.Handler;import android.os.Message;import android.util.AttributeSet;import android.util.Log;import android.view.accessibility.AccessibilityEvent;import android.view.accessibility.AccessibilityNodeInfo;import android.widget.RemoteViews.RemoteView;/** * Simple {@link ViewAnimator} that will animate between two or more views * that have been added to it.  Only one child is shown at a time.  If * requested, can automatically flip between each child at a regular interval. * * @attr ref android.R.styleable#ViewFlipper_flipInterval * @attr ref android.R.styleable#ViewFlipper_autoStart */@RemoteViewpublic class ViewFlipper extends ViewAnimator {    private static final String TAG = "ViewFlipper";    private static final boolean LOGD = false;    private static final int DEFAULT_INTERVAL = 3000;    private int mFlipInterval = DEFAULT_INTERVAL;    private boolean mAutoStart = false;    private boolean mRunning = false;    private boolean mStarted = false;    private boolean mVisible = false;    private boolean mUserPresent = true;    public ViewFlipper(Context context) {        super(context);    }    public ViewFlipper(Context context, AttributeSet attrs) {        super(context, attrs);        TypedArray a = context.obtainStyledAttributes(attrs,                com.android.internal.R.styleable.ViewFlipper);        mFlipInterval = a.getInt(                com.android.internal.R.styleable.ViewFlipper_flipInterval, DEFAULT_INTERVAL);        mAutoStart = a.getBoolean(                com.android.internal.R.styleable.ViewFlipper_autoStart, false);        a.recycle();    }    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            final String action = intent.getAction();            if (Intent.ACTION_SCREEN_OFF.equals(action)) {                mUserPresent = false;                updateRunning();            } else if (Intent.ACTION_USER_PRESENT.equals(action)) {                mUserPresent = true;                updateRunning(false);            }        }    };    @Override    protected void onAttachedToWindow() {        super.onAttachedToWindow();        // Listen for broadcasts related to user-presence        final IntentFilter filter = new IntentFilter();        filter.addAction(Intent.ACTION_SCREEN_OFF);        filter.addAction(Intent.ACTION_USER_PRESENT);        getContext().registerReceiver(mReceiver, filter);        if (mAutoStart) {            // Automatically start when requested            startFlipping();        }    }    @Override    protected void onDetachedFromWindow() {        super.onDetachedFromWindow();        mVisible = false;        getContext().unregisterReceiver(mReceiver);        updateRunning();    }    @Override    protected void onWindowVisibilityChanged(int visibility) {        super.onWindowVisibilityChanged(visibility);        mVisible = visibility == VISIBLE;        updateRunning(false);    }    /**     * How long to wait before flipping to the next view     *     * @param milliseconds     *            time in milliseconds     */    @android.view.RemotableViewMethod    public void setFlipInterval(int milliseconds) {        mFlipInterval = milliseconds;    }    /**     * Start a timer to cycle through child views     */    public void startFlipping() {        mStarted = true;        updateRunning();    }    /**     * No more flips     */    public void stopFlipping() {        mStarted = false;        updateRunning();    }    @Override    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {        super.onInitializeAccessibilityEvent(event);        event.setClassName(ViewFlipper.class.getName());    }    @Override    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {        super.onInitializeAccessibilityNodeInfo(info);        info.setClassName(ViewFlipper.class.getName());    }    /**     * Internal method to start or stop dispatching flip {@link Message} based     * on {@link #mRunning} and {@link #mVisible} state.     */    private void updateRunning() {        updateRunning(true);    }    /**     * Internal method to start or stop dispatching flip {@link Message} based     * on {@link #mRunning} and {@link #mVisible} state.     *     * @param flipNow Determines whether or not to execute the animation now, in     *            addition to queuing future flips. If omitted, defaults to     *            true.     */    private void updateRunning(boolean flipNow) {        boolean running = mVisible && mStarted && mUserPresent;        if (running != mRunning) {            if (running) {                showOnly(mWhichChild, flipNow);                Message msg = mHandler.obtainMessage(FLIP_MSG);                mHandler.sendMessageDelayed(msg, mFlipInterval);            } else {                mHandler.removeMessages(FLIP_MSG);            }            mRunning = running;        }        if (LOGD) {            Log.d(TAG, "updateRunning() mVisible=" + mVisible + ", mStarted=" + mStarted                    + ", mUserPresent=" + mUserPresent + ", mRunning=" + mRunning);        }    }    /**     * Returns true if the child views are flipping.     */    public boolean isFlipping() {        return mStarted;    }    /**     * Set if this view automatically calls {@link #startFlipping()} when it     * becomes attached to a window.     */    public void setAutoStart(boolean autoStart) {        mAutoStart = autoStart;    }    /**     * Returns true if this view automatically calls {@link #startFlipping()}     * when it becomes attached to a window.     */    public boolean isAutoStart() {        return mAutoStart;    }    private final int FLIP_MSG = 1;    private final Handler mHandler = new Handler() {        @Override        public void handleMessage(Message msg) {            if (msg.what == FLIP_MSG) {                if (mRunning) {                    showNext();                    msg = obtainMessage(FLIP_MSG);                    sendMessageDelayed(msg, mFlipInterval);                }            }        }    };}

6、示例demo

下面这个demo程序是很据大神的发布开源模仿陌陌里面代码，引导注册流程。简化了的一个demo。方便学习，也提供给大家参考吧。

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