自定义根据屏幕宽度子控件根据父控件行宽自动换行的ViewGroup

1. 自定义根据屏幕宽度子控件根据父控件行宽自动换行的ViewGroup

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;

import java.util.ArrayList;
import java.util.List;

public class SingleHobbyFlowLayout extends ViewGroup {

    public SingleHobbyFlowLayout(Context context, AttributeSet attrs, int defStyle)
    {
        super(context, attrs, defStyle);
        //
    }

    public SingleHobbyFlowLayout(Context context, AttributeSet attrs)
    {
        this(context, attrs, 0);
    }

    public SingleHobbyFlowLayout(Context context)
    {
        this(context, null);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {
        int sizeWidth = MeasureSpec.getSize(widthMeasureSpec);
        int modeWidth = MeasureSpec.getMode(widthMeasureSpec);
        int sizeHeight = MeasureSpec.getSize(heightMeasureSpec);
        int modeHeight = MeasureSpec.getMode(heightMeasureSpec);

        // wrap_content
        int width = 0;
        int height = 0;

        int lineWidth = 0;
        int lineHeight = 0;

        int cCount = getChildCount();

        for (int i = 0; i < cCount; i++)
        {
            View child = getChildAt(i);
            measureChild(child, widthMeasureSpec, heightMeasureSpec);
            MarginLayoutParams lp = (MarginLayoutParams) child
                    .getLayoutParams();

            int childWidth = child.getMeasuredWidth() + lp.leftMargin
                    + lp.rightMargin;
            int childHeight = child.getMeasuredHeight() + lp.topMargin
                    + lp.bottomMargin;

            if (lineWidth + childWidth > sizeWidth - getPaddingLeft() - getPaddingRight())
            {
                width = Math.max(width, lineWidth);
                lineWidth = childWidth;
                height += lineHeight;
                lineHeight = childHeight;
            } else
            {
                lineWidth += childWidth;
                lineHeight = Math.max(lineHeight, childHeight);
            }
            if (i == cCount - 1)
            {
                width = Math.max(lineWidth, width);
                height += lineHeight;
            }
        }

        Log.e("TAG", "sizeWidth = " + sizeWidth);
        Log.e("TAG", "sizeHeight = " + sizeHeight);

        setMeasuredDimension(
                //
                modeWidth == MeasureSpec.EXACTLY ? sizeWidth : width + getPaddingLeft() + getPaddingRight(),
                modeHeight == MeasureSpec.EXACTLY ? sizeHeight : height + getPaddingTop()+ getPaddingBottom()//
        );

    }

    private List<List<View>> mAllViews = new ArrayList<List<View>>();
    private List<Integer> mLineHeight = new ArrayList<Integer>();

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b)
    {
        mAllViews.clear();
        mLineHeight.clear();

        int width = getWidth();

        int lineWidth = 0;
        int lineHeight = 0;

        List<View> lineViews = new ArrayList<View>();

        int cCount = getChildCount();

        for (int i = 0; i < cCount; i++)
        {
            View child = getChildAt(i);
            MarginLayoutParams lp = (MarginLayoutParams) child
                    .getLayoutParams();

            int childWidth = child.getMeasuredWidth();
            int childHeight = child.getMeasuredHeight();

            if (childWidth + lineWidth + lp.leftMargin + lp.rightMargin > width - getPaddingLeft() - getPaddingRight())
            {
                mLineHeight.add(lineHeight);
                mAllViews.add(lineViews);

                lineWidth = 0;
                lineHeight = childHeight + lp.topMargin + lp.bottomMargin;
                lineViews = new ArrayList<View>();
            }
            lineWidth += childWidth + lp.leftMargin + lp.rightMargin;
            lineHeight = Math.max(lineHeight, childHeight + lp.topMargin
                    + lp.bottomMargin);
            lineViews.add(child);

        }// for end
        mLineHeight.add(lineHeight);
        mAllViews.add(lineViews);

        int left = getPaddingLeft();
        int top = getPaddingTop();

        int lineNum = mAllViews.size();

        for (int i = 0; i < lineNum; i++)
        {
            lineViews = mAllViews.get(i);
            lineHeight = mLineHeight.get(i);

            for (int j = 0; j < lineViews.size(); j++)
            {
                View child = lineViews.get(j);
                if (child.getVisibility() == View.GONE)
                {
                    continue;
                }

                MarginLayoutParams lp = (MarginLayoutParams) child
                        .getLayoutParams();

                int lc = left + lp.leftMargin;
                int tc = top + lp.topMargin;
                int rc = lc + child.getMeasuredWidth();
                int bc = tc + child.getMeasuredHeight();

                child.layout(lc, tc, rc, bc);

                left += child.getMeasuredWidth() + lp.leftMargin
                        + lp.rightMargin;
            }
            left = getPaddingLeft() ; 
            top += lineHeight ; 
        }

    }

    @Override
    public LayoutParams generateLayoutParams(AttributeSet attrs)
    {
        return new MarginLayoutParams(getContext(), attrs);
    }

}

2.使用方式（样例）：

View convertView = mLayoutInflater.inflate(R.layout.sort2, null);
            flowLayout = (SearchRecordsFlowLayout) convertView.findViewById(R.id.course_flowlayout);
            flowLayout.removeAllViews();
            final List<String> list = new ArrayList();
            list.add("test1");
            list.add("test2");
            for (int i = 0; i < list.size(); i++) {
                TextView textView = (TextView) mLayoutInflater.inflate(R.layout.textview_layout, flowLayout, false);
                textView.setText(list.get(i));
                ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) flowLayout.getLayoutParams();

                    WindowManager wm = getWindowManager();
                    int width= (wm.getDefaultDisplay().getWidth() - lp.leftMargin) / 3;

                LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(width, LinearLayout.LayoutParams.WRAP_CONTENT);
                textView.setLayoutParams(params);

                flowLayout.addView(textView);