热门搜索不规则Textview FlowLayout

<com.autohome.vendor.view.HotSearchFlowLayout    android:id="@+id/flowlayout"    android:layout_width="match_parent"    android:layout_height="wrap_content">
</com.autohome.vendor.view.HotSearchFlowLayout>
Activity使用
HotSearchFlowLayout flowlayout = (HotSearchFlowLayout) findViewById(R.id.flowlayout);
ViewGroup.MarginLayoutParams lp = new ViewGroup.MarginLayoutParams(        LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);int hot_search_pad_5 =  VendorApplication.getInstance().getResources().getDimensionPixelSize(R.dimen.hot_search_pad_5);lp.leftMargin = hot_search_pad_5;lp.rightMargin = hot_search_pad_5;lp.topMargin = hot_search_pad_5;lp.bottomMargin = hot_search_pad_5;
TextView view = new TextView(InformationArticleSearchActivity.this);view.setText(hotSearchName);
int padding7 =  VendorApplication.getInstance().getResources().getDimensionPixelSize(R.dimen.hot_search_pad_7);int padding2=  VendorApplication.getInstance().getResources().getDimensionPixelSize(R.dimen.hot_search_pad_2); view.setPadding(padding7, padding2, padding7, padding2); view.setTextColor(VendorApplication.getInstance().getResources().getColor(R.color.grey_light)); view.setBackgroundDrawable(VendorApplication.getInstance().getResources().getDrawable(R.drawable.textview_corners_black_bg));flowlayout.addView(view, lp);
/** * 热门搜索view * Created by jiangbing on 2016/1/4. */public class HotSearchFlowLayout extends ViewGroup {    private static final String TAG = "FlowLayout";    public HotSearchFlowLayout(Context context, AttributeSet attrs)    {        super(context, attrs);    }    @Override    protected ViewGroup.LayoutParams generateLayoutParams(            ViewGroup.LayoutParams p)    {        return new MarginLayoutParams(p);    }    @Override    public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs)    {        return new MarginLayoutParams(getContext(), attrs);    }    @Override    protected ViewGroup.LayoutParams generateDefaultLayoutParams()    {        return new MarginLayoutParams(LayoutParams.MATCH_PARENT,                LayoutParams.MATCH_PARENT);    }    /**     * 负责设置子控件的测量模式和大小 根据所有子控件设置自己的宽和高     */    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)    {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        // 获得它的父容器为它设置的测量模式和大小        int sizeWidth = MeasureSpec.getSize(widthMeasureSpec);        int sizeHeight = MeasureSpec.getSize(heightMeasureSpec);        int modeWidth = MeasureSpec.getMode(widthMeasureSpec);        int modeHeight = MeasureSpec.getMode(heightMeasureSpec);        Log.e(TAG, sizeWidth + "," + sizeHeight);        // 如果是warp_content情况下，记录宽和高        int width = 0;        int height = 0;        /**         * 记录每一行的宽度，width不断取最大宽度         */        int lineWidth = 0;        /**         * 每一行的高度，累加至height         */        int lineHeight = 0;        int cCount = getChildCount();        // 遍历每个子元素        for (int i = 0; i < cCount; i++)        {            View child = getChildAt(i);            // 测量每一个child的宽和高            measureChild(child, widthMeasureSpec, heightMeasureSpec);            // 得到child的lp            MarginLayoutParams lp = (MarginLayoutParams) child                    .getLayoutParams();            // 当前子空间实际占据的宽度            int childWidth = child.getMeasuredWidth() + lp.leftMargin                    + lp.rightMargin;            // 当前子空间实际占据的高度            int childHeight = child.getMeasuredHeight() + lp.topMargin                    + lp.bottomMargin;            /**             * 如果加入当前child，则超出最大宽度，则的到目前最大宽度给width，类加height 然后开启新行             */            if (lineWidth + childWidth > sizeWidth)            {                width = Math.max(lineWidth, childWidth);// 取最大的                lineWidth = childWidth; // 重新开启新行，开始记录                // 叠加当前高度，                height += lineHeight;                // 开启记录下一行的高度                lineHeight = childHeight;            } else            // 否则累加值lineWidth,lineHeight取最大高度            {                lineWidth += childWidth;                lineHeight = Math.max(lineHeight, childHeight);            }            // 如果是最后一个，则将当前记录的最大宽度和当前lineWidth做比较            if (i == cCount - 1)            {                width = Math.max(width, lineWidth);                height += lineHeight;            }        }        setMeasuredDimension((modeWidth == MeasureSpec.EXACTLY) ? sizeWidth                : width, (modeHeight == MeasureSpec.EXACTLY) ? sizeHeight                : height);    }    /**     * 存储所有的View，按行记录     */    private List<List<View>> mAllViews = new ArrayList<List<View>>();    /**     * 记录每一行的最大高度     */    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;        // 存储每一行所有的childView        List<View> lineViews = new ArrayList<View>();        int cCount = getChildCount();        // 遍历所有的孩子        for (int i = 0; i < cCount; i++)        {            View child = getChildAt(i);            MarginLayoutParams lp = (MarginLayoutParams) child                    .getLayoutParams();            int childWidth = child.getMeasuredWidth();            int childHeight = child.getMeasuredHeight();            // 如果已经需要换行            if (childWidth + lp.leftMargin + lp.rightMargin + lineWidth > width)            {                // 记录这一行所有的View以及最大高度                mLineHeight.add(lineHeight);                // 将当前行的childView保存，然后开启新的ArrayList保存下一行的childView                mAllViews.add(lineViews);                lineWidth = 0;// 重置行宽                lineViews = new ArrayList<View>();            }            /**             * 如果不需要换行，则累加             */            lineWidth += childWidth + lp.leftMargin + lp.rightMargin;            lineHeight = Math.max(lineHeight, childHeight + lp.topMargin                    + lp.bottomMargin);            lineViews.add(child);        }        // 记录最后一行        mLineHeight.add(lineHeight);        mAllViews.add(lineViews);        int left = 0;        int top = 0;        // 得到总行数        int lineNums = mAllViews.size();        for (int i = 0; i < lineNums; i++)        {            // 每一行的所有的views            lineViews = mAllViews.get(i);            // 当前行的最大高度            lineHeight = mLineHeight.get(i);            Log.e(TAG, "第" + i + "行 ：" + lineViews.size() + " , " + lineViews);            Log.e(TAG, "第" + i + "行， ：" + lineHeight);            // 遍历当前行所有的View            for (int j = 0; j < lineViews.size(); j++)            {                View child = lineViews.get(j);                if (child.getVisibility() == View.GONE)                {                    continue;                }                MarginLayoutParams lp = (MarginLayoutParams) child                        .getLayoutParams();                //计算childView的left,top,right,bottom                int lc = left + lp.leftMargin;                int tc = top + lp.topMargin;                int rc =lc + child.getMeasuredWidth();                int bc = tc + child.getMeasuredHeight();                Log.e(TAG, child + " , l = " + lc + " , t = " + t + " , r ="                        + rc + " , b = " + bc);                child.layout(lc, tc, rc, bc);                left += child.getMeasuredWidth() + lp.rightMargin                        + lp.leftMargin;            }            left = 0;            top += lineHeight;        }    }}