一个 自适应（水平 or 垂直）的 SlidingDrawer

test_layout.xml

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="match_parent" >
    
     <xx.fjnuit.Control.WrappingSlidingDrawer
         android:id="@+id/SlidingDrawer_fanye"
         android:layout_width="wrap_content"
         android:layout_height="fill_parent"
         android:content="@+id/linearlayout"
         android:handle="@+id/imageViewIcon"
         android:orientation="horizontal" >
         <!-- as well vertical -->

             <ImageButton
                 android:id="@id/imageViewIcon"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:background="@android:color/transparent"
                 android:src="@drawable/stave_anniu_fanye" />

               <LinearLayout
                   android:id="@id/linearlayout"
                   android:layout_width="wrap_content"
                   android:layout_height="wrap_content"
                   android:orientation="horizontal"
                   android:paddingTop="5dp">
                                  
                  <!-- stuff you sub view -->
                                    
                 </LinearLayout>
                     
    </xx.fjnuit.Control.WrappingSlidingDrawer>
    
    
</RelativeLayout>    
 
                               

WrappingSlidingDrawer.java

/**    
 * Description: 自适应slidingDrawer  wrap_content
 * Copyright:   Copyright (c)2015-2016    
 * Company:        
 * @author:     Edward  
 * @version:    1.0   
 * Create at:   2016年11月30日 下午6:10:18
 *    
 * Modification History:    
 * Date				Author		Version		Description    
 * ------------------------------------------------------------------    
 * 2016年11月30日		Edward		1.0
 */
package xx.fjnuit.Control;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.widget.SlidingDrawer;

/**
 * @ref http://stackoverflow.com/a/4265553
 *
 */
public class WrappingSlidingDrawer extends SlidingDrawer {

	final String TAG = "WrappingSlidingDrawer";

	public WrappingSlidingDrawer(Context context, AttributeSet attrs) {
		super(context, attrs, 0);

		// http://stackoverflow.com/a/7913610
		int[] textSizeAttr = new int[] { android.R.attr.orientation,
				android.R.attr.topOffset };
		TypedArray a = context.obtainStyledAttributes(attrs, textSizeAttr);
		mVertical = ORIENTATION_VERTICAL == a.getInt(0, ORIENTATION_VERTICAL);
		ELFLog.i(TAG, "====" + mVertical);

		mTopOffset = a.getDimensionPixelSize(1, 0);
		a.recycle();
	}

	public WrappingSlidingDrawer(Context context, AttributeSet attrs,
			int defStyle) {
		super(context, attrs, defStyle);
		// 该 api 获取 orientation 不正确
		// int orientation = attrs.getAttributeIntValue("android",
		// "orientation",
		// ORIENTATION_VERTICAL);
		// mTopOffset = attrs.getAttributeIntValue("android", "topOffset", 0);

		// mVertical = (orientation == SlidingDrawer.ORIENTATION_VERTICAL);
		// mVertical = false;

		int[] textSizeAttr = new int[] { android.R.attr.orientation,
				android.R.attr.topOffset };
		TypedArray a = context.obtainStyledAttributes(attrs, textSizeAttr);
		mVertical = ORIENTATION_VERTICAL == a.getInt(0, ORIENTATION_VERTICAL);
		ELFLog.i(TAG, "====" + mVertical);

		mTopOffset = a.getDimensionPixelSize(1, 0);
		a.recycle();
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

		int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec);
		int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec);

		int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec);
		int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec);

		if (widthSpecMode == MeasureSpec.UNSPECIFIED
				|| heightSpecMode == MeasureSpec.UNSPECIFIED) {
			throw new RuntimeException(
					"SlidingDrawer cannot have UNSPECIFIED dimensions");
		}

		final View handle = getHandle();
		final View content = getContent();
		measureChild(handle, widthMeasureSpec, heightMeasureSpec);

		if (mVertical) {
			int height = heightSpecSize - handle.getMeasuredHeight()
					- mTopOffset;
			content.measure(widthMeasureSpec,
					MeasureSpec.makeMeasureSpec(height, heightSpecMode));
			heightSpecSize = handle.getMeasuredHeight() + mTopOffset
					+ content.getMeasuredHeight();
			widthSpecSize = content.getMeasuredWidth();
			if (handle.getMeasuredWidth() > widthSpecSize)
				widthSpecSize = handle.getMeasuredWidth();
		} else {
			int width = widthSpecSize - handle.getMeasuredWidth() - mTopOffset;
			getContent().measure(
					MeasureSpec.makeMeasureSpec(width, widthSpecMode),
					heightMeasureSpec);
			widthSpecSize = handle.getMeasuredWidth() + mTopOffset
					+ content.getMeasuredWidth();
			heightSpecSize = content.getMeasuredHeight();
			if (handle.getMeasuredHeight() > heightSpecSize)
				heightSpecSize = handle.getMeasuredHeight();
		}

		setMeasuredDimension(widthSpecSize, heightSpecSize);
	}

	private boolean mVertical;
	private int mTopOffset;
}