仿QQ5.3.1左右滑动效果实现

工作之余无聊，研究1下QQ的殊效，不过还是有些区分的！

效果图以下：

左滑：

右滑：

滑动是实现主要是HorizontalScrollView来实现的，可能会与qq的有些区分，但是大致效果还是出来了！

区分：

1.可以左右滑动，qq的不可以右滑。

2.左滑和右滑的背景切换效果和qq的有区分

3.还有些细节上的差别

主要实现代码以下：

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.Toast;


import com.nineoldandroids.view.ViewHelper;
import com.xiaoyi.tencent.R;


public class SlidingMenu extends HorizontalScrollView
{
private LinearLayout mWapper;
private ViewGroup mMenu;
private ViewGroup mContent;
private int mScreenWidth;


private int mMenuWidth;
// dp
private int mMenuRightPadding = 50;


private boolean once;


public boolean isLeftOpen;
public boolean isRightOpen;



Context context;


/**
* 未使用自定义属性时，调用
* 
* @param context
* @param attrs
*/
public SlidingMenu(Context context, AttributeSet attrs)
{
this(context, attrs, 0);
this.context=context;
}


/**
* 当使用了自定义属性时，会调用此构造方法
* 
* @param context
* @param attrs
* @param defStyle
*/
public SlidingMenu(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);


this.context=context;
// 获得我们定义的属性
TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
R.styleable.SlidingMenu, defStyle, 0);


int n = a.getIndexCount();
for (int i = 0; i < n; i++)
{
int attr = a.getIndex(i);
switch (attr)
{
case R.styleable.SlidingMenu_rightPadding:
mMenuRightPadding = a.getDimensionPixelSize(attr,
(int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 50, context
.getResources().getDisplayMetrics()));
break;
}
}
a.recycle();


WindowManager wm = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics = new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
mScreenWidth = outMetrics.widthPixels;
Log.d("TAG", "slidingMenu");
}


public SlidingMenu(Context context)
{
this(context, null);
this.context=context;
}


/**
* 设置子View的宽和高 设置自己的宽和高
*/
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
if (!once)
{
mWapper = (LinearLayout) getChildAt(0);
mMenu = (ViewGroup) mWapper.getChildAt(0);
mContent = (ViewGroup) mWapper.getChildAt(1);
mMenuWidth = mMenu.getLayoutParams().width = mScreenWidth
- mMenuRightPadding;
mContent.getLayoutParams().width = mScreenWidth;
once = true;
mContent.setClickable(true);
mContent.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
Log.d("TAG", "setOnClickListener");
if (isRightOpen)
{
closeRightMenu();
} else if(isLeftOpen)
{
closeMenuLeft();
}

}
});
}
Log.d("TAG", "onMeasure");
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}


/**
* 通过设置偏移量，将menu隐藏
*/
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b)
{
super.onLayout(changed, l, t, r, b);
if (changed)
{
this.scrollTo(mMenuWidth, 0);
}
}


@Override
public boolean onTouchEvent(MotionEvent ev)
{
Log.e("TAG", "onTouchEvent  ");
int action = ev.getAction();
switch (action)
{
case MotionEvent.ACTION_UP:
// 隐藏在左侧的宽度
int scrollX = getScrollX();
if (scrollX >= mMenuWidth / 2&&scrollX<=mMenuWidth)
{
this.smoothScrollTo(mMenuWidth, 0);
isLeftOpen = false;
} else if(scrollX<mMenuWidth / 2){
this.smoothScrollTo(0, 0);
isLeftOpen = true;
}else if(scrollX>=mMenuWidth+30){
this.smoothScrollTo(mMenuWidth*2, 0);
isRightOpen = true;
}else{
this.smoothScrollTo(mMenuWidth, 0);
isRightOpen = false;
}
return true;
}
return super.onTouchEvent(ev);
}


/**
* 打开左侧菜单
*/
public void openMenuLeft()
{
if (isLeftOpen)
return;
this.smoothScrollTo(0, 0);
isLeftOpen = true;
}
/**
* 打开右侧菜单
*/
public void openRightMenu()
{
if (isRightOpen)
return;
this.smoothScrollTo(mMenuWidth*2, 0);
isRightOpen = true;
}


public void closeMenuLeft()
{
if (!isLeftOpen)
return;
this.smoothScrollTo(mMenuWidth, 0);
isLeftOpen = false;
}
/**
* 关闭右侧菜单
*/
public void closeRightMenu()
{
if (!isRightOpen)
return;
this.smoothScrollTo(mMenuWidth, 0);
isRightOpen = false;
}


/**
* 切换菜单左侧
*/
public void toggleLeft()
{
if (isLeftOpen)
{
closeMenuLeft();
} else
{
openMenuLeft();
}
}
/**
* 切换菜单右侧
*/
public void toggleRight()
{
if (isRightOpen)
{
closeRightMenu();
} else
{
openRightMenu();
}
}
/**
* 关闭菜单
*/
public void closeMune()
{
if (isRightOpen)
{
Toast.makeText(context, "isRightOpen关闭菜单", Toast.LENGTH_LONG).show();
closeRightMenu();
} else if(isLeftOpen)
{
Toast.makeText(context, "isLeftOpen关闭菜单", Toast.LENGTH_LONG).show();
closeMenuLeft();
}
}


/**
* 转动产生时
*/
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt)
{
super.onScrollChanged(l, t, oldl, oldt);
if(l<=mMenuWidth){//显示左侧菜单
float scale = l * 1.0f / mMenuWidth; // 1 ~ 0


/**
* 区分1：内容区域1.0~0.7 缩放的效果 scale : 1.0~0.0 0.7 + 0.3 * scale
* 
* 区分2：菜单的偏移量需要修改
* 
* 区分3：菜单的显示时有缩放和透明度变化 缩放：0.7 ~1.0 1.0 - scale * 0.3 透明度 0.6 ~ 1.0 
* 0.6+ 0.4 * (1- scale) ;
* 
*/
float rightScale = 0.7f + 0.3f * scale;
float leftScale = 1.0f - scale * 0.3f;
float leftAlpha = 0.6f + 0.4f * (1 - scale);


// 调用属性动画，设置TranslationX
ViewHelper.setTranslationX(mMenu, mMenuWidth * scale * 0.8f);

ViewHelper.setScaleX(mMenu, leftScale);
ViewHelper.setScaleY(mMenu, leftScale);
ViewHelper.setAlpha(mMenu, leftAlpha);
// 设置content的缩放的中心点
ViewHelper.setPivotX(mContent, 0);
ViewHelper.setPivotY(mContent, mContent.getHeight() / 2);
ViewHelper.setScaleX(mContent, rightScale);
ViewHelper.setScaleY(mContent, rightScale);
}else{//显示右侧菜单
float scale =1- (l * 1.0f- mMenuWidth)/ mMenuWidth; // 1 ~ 0
float contentScale = 0.7f + 0.3f * scale;
float rightScale = 1.0f - scale * 0.3f;
float rightAlpha = 0.6f + 0.4f * (1 - scale);
// 调用属性动画，设置TranslationX
ViewHelper.setTranslationX(mMenu, -mMenuWidth * scale * 0.8f);

ViewHelper.setScaleX(mMenu, rightScale);
ViewHelper.setScaleY(mMenu, rightScale);
ViewHelper.setAlpha(mMenu, rightAlpha);
// 设置content的缩放的中心点
ViewHelper.setPivotX(mContent, mContent.getWidth());
ViewHelper.setPivotY(mContent, mContent.getHeight() / 2);
ViewHelper.setScaleX(mContent, contentScale);
ViewHelper.setScaleY(mContent, contentScale);
}



}


}

中间是张图片，左右菜单布局是写出来的。

git地址：https://github.com/xiaoyi848699/Tencent

csdn下载地址：http://download.csdn.net/detail/xiaoyi848699/8382649

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