android ViewFlipper使用示例(注册引导页)
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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。
其中动态加载view的方法是来自父类ViewGroup
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。
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)。
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。下载地址:点击
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