子控件自动换行的父容器

public class SkillGridLayout extends ViewGroup {
    int mLeft, mRight, mTop, mBottom;
    private int mPaddingLeft = ScreenUtils.dip2px(4.0f);
    private int mPaddingTop = 5;
    Hashtable map = new Hashtable();

    public SkillGridLayout(Context context) {
	super(context);
    }

    public SkillGridLayout(Context context, int horizontalSpacing, int verticalSpacing) {
	super(context);
    }

    public SkillGridLayout(Context context, AttributeSet attrs) {
	super(context, attrs);
    }

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

	int mWidth = MeasureSpec.getSize(widthMeasureSpec);
	int mCount = getChildCount();
	int mX = 0;
	int mY = 0;
	mLeft = 0;
	mRight = 0;
	mTop = 5;
	mBottom = 0;

	int j = 0;

	View lastview = null;
	if (mCount > 0) {
	    View child_one = getChildAt(0);
	    child_one.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
	    // 此处增加onlayout中的换行判断，用于计算所需的高度
	    mX += child_one.getMeasuredWidth();
	    mY += child_one.getMeasuredHeight();
	    Position position_one = new Position();
	    mLeft = 0;
	    mRight = mLeft + child_one.getMeasuredWidth();
	    mBottom = mTop + child_one.getMeasuredHeight();
	    mY = mTop; // 每次的高度必须记录 否则控件会叠加到一起
	    position_one.left = mLeft;
	    position_one.top = mTop + 3;
	    position_one.right = mRight;
	    position_one.bottom = mBottom;
	    map.put(child_one, position_one);
	}

	for (int i = 1; i < mCount; i++) {
	    final View child = getChildAt(i);

	    child.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
	    // 此处增加onlayout中的换行判断，用于计算所需的高度
	    int childw = child.getMeasuredWidth() + mPaddingLeft;
	    int childh = child.getMeasuredHeight();
	    mX += childw; // 将每次子控件宽度进行统计叠加，如果大于设定的高度则需要换行，高度即Top坐标也需重新设置

	    Position position = new Position();
	    mLeft = getPosition(i - j, i);
	    mRight = mLeft + child.getMeasuredWidth();
	    if (mX > mWidth) {
		mX = child.getMeasuredWidth();
		mY += childh;
		j = i;
		mLeft = 0;
		mRight = mLeft + child.getMeasuredWidth();
		mTop = mY + mPaddingTop;
		// PS：如果发现高度还是有问题就得自己再细调了
	    }
	    mBottom = mTop + child.getMeasuredHeight();
	    mY = mTop; // 每次的高度必须记录 否则控件会叠加到一起
	    position.left = mLeft;
	    position.top = mTop + 3;
	    position.right = mRight;
	    position.bottom = mBottom;
	    map.put(child, position);
	}
	setMeasuredDimension(mWidth, mBottom);
    }

    @Override
    protected LayoutParams generateDefaultLayoutParams() {
	return new LayoutParams(1, 1); // default of 1px spacing
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
	// TODO Auto-generated method stub

	int count = getChildCount();
	for (int i = 0; i < count; i++) {
	    View child = getChildAt(i);
	    Position pos = (Position) map.get(child);
	    if (pos != null) {
		child.layout(pos.left, pos.top, pos.right, pos.bottom);
	    } else {
		Log.i("MyLayout", "error");
	    }
	}
    }

    private class Position {
	int left, top, right, bottom;
    }

    public int getPosition(int IndexInRow, int childIndex) {
	if (IndexInRow > 0) {
	    return getPosition(IndexInRow - 1, childIndex - 1) + getChildAt(childIndex - 1).getMeasuredWidth() + mPaddingLeft;
	}
	return getPaddingLeft();
    }
    
    /**
     * 设置之控件的左右边距
     * @param paddingLeft
     */
    public void setPaddingLeft(int paddingLeft) {
	mPaddingLeft = ScreenUtils.dip2px(paddingLeft);
    }
    
    /**
     * 设置之控件的上下边距
     * @param paddingTop
     */
    public void setPaddingTop(int paddingTop) {
	mPaddingTop = ScreenUtils.dip2px(mPaddingTop);
    }

}

需要设置左右边距的大小实现setPaddingLeft()方法，上下间距实现setPaddingTop()方法