Android 侧滑菜单的实现，参考网上的代码，实现侧滑菜单。最重要的是这个动画类UgcAnimations，如何使用动画类来侧滑的封装FlipperLayout。

1、实现效果

2、动画类UgcAnimations

package com.mmsx.base; import android.content.Context; import android.view.View; import android.view.ViewGroup.MarginLayoutParams; import android.view.animation.AlphaAnimation; import android.view.animation.Animation; import android.view.animation.AnimationSet; import android.view.animation.AnticipateInterpolator; import android.view.animation.OvershootInterpolator; import android.view.animation.RotateAnimation; import android.view.animation.ScaleAnimation; import android.view.animation.TranslateAnimation; import android.widget.ImageView; import android.widget.RelativeLayout; /** * Path动画类 * */ public class UgcAnimations { private static int xOffset = 15; private static int yOffset = -13; public static void initOffset(Context context) { xOffset = (int) (15 * context.getResources().getDisplayMetrics().density); yOffset = -(int) (13 * context.getResources().getDisplayMetrics().density); } public static Animation getRotateAnimation(float fromDegrees, float toDegrees, long durationMillis) { RotateAnimation rotate = new RotateAnimation(fromDegrees, toDegrees, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); rotate.setDuration(durationMillis); rotate.setFillAfter(true); return rotate; } public static Animation getAlphaAnimation(float fromAlpha, float toAlpha, long durationMillis) { AlphaAnimation alpha = new AlphaAnimation(fromAlpha, toAlpha); alpha.setDuration(durationMillis); alpha.setFillAfter(true); return alpha; } public static Animation getScaleAnimation(long durationMillis) { ScaleAnimation scale = new ScaleAnimation(1.0f, 1.5f, 1.0f, 1.5f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); scale.setDuration(durationMillis); return scale; } public static Animation getTranslateAnimation(float fromXDelta, float toXDelta, float fromYDelta, float toYDelta, long durationMillis) { TranslateAnimation translate = new TranslateAnimation(fromXDelta, toXDelta, fromYDelta, toYDelta); translate.setDuration(durationMillis); translate.setFillAfter(true); return translate; } public static void startOpenAnimation(RelativeLayout relativeLayout, ImageView background, ImageView menu, long durationMillis) { background.setVisibility(View.VISIBLE); relativeLayout.setVisibility(View.VISIBLE); background.startAnimation(getAlphaAnimation(0f, 1f, durationMillis)); menu.startAnimation(getRotateAnimation(0, 90, durationMillis)); for (int i = 0; i < relativeLayout.getChildCount(); i++) { ImageView imageView = (ImageView) relativeLayout.getChildAt(i); imageView.setVisibility(View.VISIBLE); MarginLayoutParams params = (MarginLayoutParams) imageView .getLayoutParams(); AnimationSet set = new AnimationSet(true); set.addAnimation(getRotateAnimation(-270, 0, durationMillis)); set.addAnimation(getAlphaAnimation(0.5f, 1.0f, durationMillis)); set.addAnimation(getTranslateAnimation( -params.leftMargin + xOffset, 0f, params.bottomMargin + yOffset, 0f, durationMillis)); set.setFillAfter(true); set.setDuration(durationMillis); set.setStartOffset((i * 100) / (-1 + relativeLayout.getChildCount())); set.setInterpolator(new OvershootInterpolator(1f)); imageView.startAnimation(set); } } public static void startCloseAnimation(final RelativeLayout relativeLayout, final ImageView background, ImageView menu, long durationMillis) { background.startAnimation(getAlphaAnimation(1f, 0f, durationMillis)); menu.startAnimation(getRotateAnimation(90, 0, durationMillis)); for (int i = 0; i < relativeLayout.getChildCount(); i++) { final ImageView imageView = (ImageView) relativeLayout .getChildAt(i); MarginLayoutParams params = (MarginLayoutParams) imageView .getLayoutParams(); AnimationSet set = new AnimationSet(true); set.addAnimation(getRotateAnimation(0, -270, durationMillis)); set.addAnimation(getAlphaAnimation(1.0f, 0.5f, durationMillis)); set.addAnimation(getTranslateAnimation(0f, -params.leftMargin + xOffset, 0f, params.bottomMargin + yOffset, durationMillis)); set.setFillAfter(true); set.setDuration(durationMillis); set.setStartOffset(((relativeLayout.getChildCount() - i) * 100) / (-1 + relativeLayout.getChildCount())); set.setInterpolator(new AnticipateInterpolator(1f)); set.setAnimationListener(new Animation.AnimationListener() { public void onAnimationStart(Animation arg0) { } public void onAnimationRepeat(Animation arg0) { } public void onAnimationEnd(Animation arg0) { relativeLayout.setVisibility(View.GONE); background.setVisibility(View.GONE); } }); imageView.startAnimation(set); } } public static Animation clickAnimation(long durationMillis) { AnimationSet set = new AnimationSet(true); set.addAnimation(getAlphaAnimation(1.0f, 0.3f, durationMillis)); set.addAnimation(getScaleAnimation(durationMillis)); set.setDuration(durationMillis); return set; } }

3、封装使用动画类FlipperLayout

package com.mmsx.base; import android.content.Context; import android.util.AttributeSet; import android.util.TypedValue; import android.view.MotionEvent; import android.view.VelocityTracker; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewGroup; import android.widget.Scroller; /** * 自己重写的ViewGroup,用与滑动切换界面使用,代码不详解,慢点看的话应该能看懂的... */ public class FlipperLayout extends ViewGroup { private Scroller mScroller; private VelocityTracker mVelocityTracker; private int mWidth; public static final int SCREEN_STATE_CLOSE = 0; public static final int SCREEN_STATE_OPEN = 1; public static final int TOUCH_STATE_RESTART = 0; public static final int TOUCH_STATE_SCROLLING = 1; public static final int SCROLL_STATE_NO_ALLOW = 0; public static final int SCROLL_STATE_ALLOW = 1; private int mScreenState = 0; private int mTouchState = 0; private int mScrollState = 0; private int mVelocityValue = 0; private boolean mOnClick = false; private onUgcDismissListener mOnUgcDismissListener; private onUgcShowListener mOnUgcShowListener; public FlipperLayout(Context context) { super(context); mScroller = new Scroller(context); mWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 54, getResources().getDisplayMetrics()); } public FlipperLayout(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public FlipperLayout(Context context, AttributeSet attrs) { super(context, attrs); } protected void onLayout(boolean changed, int l, int t, int r, int b) { for (int i = 0; i < getChildCount(); i++) { View child = getChildAt(i); int height = child.getMeasuredHeight(); int width = child.getMeasuredWidth(); child.layout(0, 0, width, height); } } protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); int width = MeasureSpec.getSize(widthMeasureSpec); int height = MeasureSpec.getSize(heightMeasureSpec); setMeasuredDimension(width, height); for (int i = 0; i < getChildCount(); i++) { getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec); } } public boolean dispatchTouchEvent(MotionEvent ev) { obtainVelocityTracker(ev); switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: mTouchState = mScroller.isFinished() ? TOUCH_STATE_RESTART : TOUCH_STATE_SCROLLING; if (mTouchState == TOUCH_STATE_RESTART) { int x = (int) ev.getX(); int screenWidth = getWidth(); if (x <= mWidth && mScreenState == SCREEN_STATE_CLOSE && mTouchState == TOUCH_STATE_RESTART || x >= screenWidth - mWidth && mScreenState == SCREEN_STATE_OPEN && mTouchState == TOUCH_STATE_RESTART) { if (mScreenState == SCREEN_STATE_OPEN) { mOnClick = true; } mScrollState = SCROLL_STATE_ALLOW; } else { mOnClick = false; mScrollState = SCROLL_STATE_NO_ALLOW; } } else { return false; } break; case MotionEvent.ACTION_MOVE: mVelocityTracker.computeCurrentVelocity(1000, ViewConfiguration.getMaximumFlingVelocity()); if (mScrollState == SCROLL_STATE_ALLOW && getWidth() - (int) ev.getX() < mWidth) { return true; } break; case MotionEvent.ACTION_UP: releaseVelocityTracker(); if (mOnClick) { mOnClick = false; mScreenState = SCREEN_STATE_CLOSE; mScroller.startScroll(getChildAt(1).getScrollX(), 0, -getChildAt(1).getScrollX(), 0, 800); invalidate(); } break; } return super.dispatchTouchEvent(ev); } public boolean onInterceptTouchEvent(MotionEvent ev) { obtainVelocityTracker(ev); switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: mTouchState = mScroller.isFinished() ? TOUCH_STATE_RESTART : TOUCH_STATE_SCROLLING; if (mTouchState == TOUCH_STATE_SCROLLING) { return false; } break; case MotionEvent.ACTION_MOVE: mOnClick = false; mVelocityTracker.computeCurrentVelocity(1000, ViewConfiguration.getMaximumFlingVelocity()); if (mScrollState == SCROLL_STATE_ALLOW && Math.abs(mVelocityTracker.getXVelocity()) > 200) { return true; } break; case MotionEvent.ACTION_UP: releaseVelocityTracker(); if (mScrollState == SCROLL_STATE_ALLOW && mScreenState == SCREEN_STATE_OPEN) { return true; } break; } return super.onInterceptTouchEvent(ev); } public boolean onTouchEvent(MotionEvent event) { obtainVelocityTracker(event); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: mTouchState = mScroller.isFinished() ? TOUCH_STATE_RESTART : TOUCH_STATE_SCROLLING; if (mTouchState == TOUCH_STATE_SCROLLING) { return false; } break; case MotionEvent.ACTION_MOVE: mVelocityTracker.computeCurrentVelocity(1000, ViewConfiguration.getMaximumFlingVelocity()); mVelocityValue = (int) mVelocityTracker.getXVelocity(); getChildAt(1).scrollTo(-(int) event.getX(), 0); break; case MotionEvent.ACTION_UP: if (mScrollState == SCROLL_STATE_ALLOW) { if (mVelocityValue > 2000) { mScreenState = SCREEN_STATE_OPEN; mScroller .startScroll( getChildAt(1).getScrollX(), 0, -(getWidth() - Math.abs(getChildAt(1) .getScrollX()) - mWidth), 0, 250); invalidate(); } else if (mVelocityValue < -2000) { mScreenState = SCREEN_STATE_CLOSE; mScroller.startScroll(getChildAt(1).getScrollX(), 0, -getChildAt(1).getScrollX(), 0, 250); invalidate(); } else if (event.getX() < getWidth() / 2) { mScreenState = SCREEN_STATE_CLOSE; mScroller.startScroll(getChildAt(1).getScrollX(), 0, -getChildAt(1).getScrollX(), 0, 800); invalidate(); } else { mScreenState = SCREEN_STATE_OPEN; mScroller .startScroll( getChildAt(1).getScrollX(), 0, -(getWidth() - Math.abs(getChildAt(1) .getScrollX()) - mWidth), 0, 800); invalidate(); } } break; } return super.onTouchEvent(event); } public void open() { mTouchState = mScroller.isFinished() ? TOUCH_STATE_RESTART : TOUCH_STATE_SCROLLING; if (mTouchState == TOUCH_STATE_RESTART) { mScreenState = SCREEN_STATE_OPEN; mScroller.startScroll(getChildAt(1).getScrollX(), 0, -(getWidth() - Math.abs(getChildAt(1).getScrollX()) - mWidth), 0, 800); invalidate(); } } //关闭当前的侧滑菜单，用view打开点击事件的页面 public void close(View view) { mScreenState = SCREEN_STATE_CLOSE; mScroller.startScroll(getChildAt(1).getScrollX(), 0, -getChildAt(1) .getScrollX(), 0, 800); invalidate(); setContentView(view); } public void computeScroll() { super.computeScroll(); if (mScroller.computeScrollOffset()) { getChildAt(1).scrollTo(mScroller.getCurrX(), mScroller.getCurrY()); postInvalidate(); } else { if (mScreenState == SCREEN_STATE_OPEN) { if (mOnUgcDismissListener != null) { mOnUgcDismissListener.dismiss(); } } else if (mScreenState == SCREEN_STATE_CLOSE) { if (mOnUgcShowListener != null) { mOnUgcShowListener.show(); } } } } private void obtainVelocityTracker(MotionEvent event) { if (mVelocityTracker == null) { mVelocityTracker = VelocityTracker.obtain(); } mVelocityTracker.addMovement(event); } private void releaseVelocityTracker() { if (mVelocityTracker != null) { mVelocityTracker.recycle(); mVelocityTracker = null; } } public int getScreenState() { return mScreenState; } public void setContentView(View view) { removeViewAt(1); addView(view, 1, getLayoutParams()); } public interface OnOpenListener { public abstract void open(); } public interface OnCloseListener { public abstract void close(); } public interface onUgcDismissListener { public abstract void dismiss(); } public interface onUgcShowListener { public abstract void show(); } public void setOnUgcDismissListener( onUgcDismissListener onUgcDismissListener) { mOnUgcDismissListener = onUgcDismissListener; } public void setOnUgcShowListener(onUgcShowListener onUgcShowListener) { mOnUgcShowListener = onUgcShowListener; } }

4、主界面MainActivity

package com.mmsx.activity; import com.mmsx.activity.SideslipMenu.onChangeViewListener; import com.mmsx.activity.SideslipOther.onDataListener; import com.mmsx.base.FlipperLayout; import com.mmsx.base.FlipperLayout.OnOpenListener; import com.mmsx.base.ViewUtil; import android.os.Bundle; import android.app.Activity; import android.view.ViewGroup.LayoutParams; import android.widget.Toast; public class MainActivity extends Activity implements OnOpenListener{ //侧滑主要控制类，设置跟布局 private FlipperLayout mRoot; //侧滑的默认界面，主界面 private SideslipHome mHome; //侧滑的菜单，进行选择的 private SideslipMenu mSideslipMenu; //其他菜单列表选择的效果 private SideslipOther mOther; //退出时间间隔变量 private long mExitTime; //时间间隔2s private static final int INTERVAL = 2000; //侧滑菜单选中的item private int mViewPosition; //侧滑传递的标题 private String mstrTitle; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //创建容器,并设置全屏大小 mRoot = new FlipperLayout(this); //布局的参数 LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT); mRoot.setLayoutParams(params); //创建菜单界面和内容首页界面,并添加到容器中,用于初始显示 mHome = new SideslipHome(this, this); mSideslipMenu = new SideslipMenu(this); mRoot.addView(mSideslipMenu.getView(), params); mRoot.addView(mHome.getView(), params); //设置跟布局 setContentView(mRoot); //设置监听 setListener(); } //设置监听 private void setListener() { mHome.setOnOpenListener(this); //监听菜单界面切换显示内容(onChangeViewListener接口在SideslipMenu中定义) mSideslipMenu.setOnChangeViewListener(new onChangeViewListener() { public void onChangeView(int arg0) { mViewPosition = arg0; mOther = new SideslipOther(MainActivity.this); switch (arg0) { case ViewUtil.HOME: mRoot.close(mHome.getView()); break; case ViewUtil.MESSAGE: mstrTitle = "消息"; //设置数据接口监听 mOther.setDataTitle(new DataTitle()); mRoot.close(mOther.getView()); break; case ViewUtil.FRIENDS: mstrTitle = "好友"; mOther.setDataTitle(new DataTitle()); mRoot.close(mOther.getView()); break; case ViewUtil.PHOTO: mstrTitle = "照片"; mOther.setDataTitle(new DataTitle()); mRoot.close(mOther.getView()); break; case ViewUtil.VIEWED: mstrTitle = "转帖"; mOther.setDataTitle(new DataTitle()); mRoot.close(mOther.getView()); break; case ViewUtil.GIFTS: mstrTitle = "礼物"; mOther.setDataTitle(new DataTitle()); mRoot.close(mOther.getView()); break; case ViewUtil.RECOMMEND: mstrTitle = "游戏"; mOther.setDataTitle(new DataTitle()); mRoot.close(mOther.getView()); break; case ViewUtil.LBS: mstrTitle = "附近 "; mOther.setDataTitle(new DataTitle()); mRoot.close(mOther.getView()); break; default: break; } } }); } //传递数据到侧滑选中的页面 private class DataTitle implements onDataListener{ @Override public String getDataTitle() { return mstrTitle; } } @Override public void open() { if (mRoot.getScreenState() == FlipperLayout.SCREEN_STATE_CLOSE) { mRoot.open(); } } /** * 返回键监听 */ public void onBackPressed() { /** * 如果界面的path菜单没有关闭时,先将path菜单关闭,否则则判断两次返回时间间隔,小于两秒则退出程序 */ if (mRoot.getScreenState() == FlipperLayout.SCREEN_STATE_OPEN) { if (mSideslipMenu.getUgcIsShowing()) { mSideslipMenu.closeUgc(); } else { exit(); } } else { switch (mViewPosition) { case ViewUtil.HOME: if (mHome.getUgcIsShowing()) { mHome.closeUgc(); } else { exit(); } break; default: exit(); break; } } } /** * 判断两次返回时间间隔,小于两秒则退出程序 */ private void exit() { if (System.currentTimeMillis() - mExitTime > INTERVAL) { Toast.makeText(this, "再按一次返回键,可直接退出程序", Toast.LENGTH_SHORT).show(); mExitTime = System.currentTimeMillis(); } else { finish(); android.os.Process.killProcess(android.os.Process.myPid()); System.exit(0); } } }

5、SideslipHome

package com.mmsx.activity; import com.mmsx.base.FlipperLayout.OnOpenListener; import android.app.Activity; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.widget.TextView; public class SideslipHome { private Context mContext; private Activity mActivity; private View mHomeView; private boolean mUgcIsShowing = false; private OnOpenListener mOnOpenListener; public SideslipHome(Context context, Activity activity) { mContext = context; mActivity = activity; mHomeView = LayoutInflater.from(context).inflate(R.layout.sideslip_home, null); initUI(); } private void initUI() { TextView ivTitleName = (TextView)mHomeView.findViewById(R.id.ivTitleName); ivTitleName.setText("主页动态"); } public void setOnOpenListener(OnOpenListener onOpenListener) { mOnOpenListener = onOpenListener; } public View getView() { return mHomeView; } /** * 获取Path菜单显示状态 */ public boolean getUgcIsShowing() { return mUgcIsShowing; } /** * 关闭Path菜单 */ public void closeUgc() { mUgcIsShowing = false; } }

好了，以上就是本文的全部叙述，希望大家喜欢。