<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);
/** * 熱門搜索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); } /** * 負責設置子控件的測量模式和大小 根據所有子控件設置自己的寬和高 */ @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); // 獲得它的父容器爲它設置的測量模式和大小 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情況下，記錄寬和高 int width = 0; int height = 0; /** * 記錄每一行的寬度，width不斷取最大寬度 */ int lineWidth = 0; /** * 每一行的高度，累加至height */ int lineHeight = 0; int cCount = getChildCount(); // 遍歷每個子元素 for (int i = 0; i < cCount; i++) { View child = getChildAt(i); // 測量每一個child的寬和高 measureChild(child, widthMeasureSpec, heightMeasureSpec); // 得到child的lp MarginLayoutParams lp = (MarginLayoutParams) child .getLayoutParams(); // 當前子空間實際佔據的寬度 int childWidth = child.getMeasuredWidth() + lp.leftMargin + lp.rightMargin; // 當前子空間實際佔據的高度 int childHeight = child.getMeasuredHeight() + lp.topMargin + lp.bottomMargin; /** * 如果加入當前child，則超出最大寬度，則的到目前最大寬度給width，類加height 然後開啓新行 */ if (lineWidth + childWidth > sizeWidth) { width = Math.max(lineWidth, childWidth);// 取最大的 lineWidth = childWidth; // 重新開啓新行，開始記錄 // 疊加當前高度， height += lineHeight; // 開啓記錄下一行的高度 lineHeight = childHeight; } else // 否則累加值lineWidth,lineHeight取最大高度 { lineWidth += childWidth; lineHeight = Math.max(lineHeight, childHeight); } // 如果是最後一個，則將當前記錄的最大寬度和當前lineWidth做比較 if (i == cCount - 1) { width = Math.max(width, lineWidth); height += lineHeight; } } setMeasuredDimension((modeWidth == MeasureSpec.EXACTLY) ? sizeWidth : width, (modeHeight == MeasureSpec.EXACTLY) ? sizeHeight : height); } /** * 存儲所有的View，按行記錄 */ private List<List<View>> mAllViews = new ArrayList<List<View>>(); /** * 記錄每一行的最大高度 */ 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; // 存儲每一行所有的childView List<View> lineViews = new ArrayList<View>(); int cCount = getChildCount(); // 遍歷所有的孩子 for (int i = 0; i < cCount; i++) { View child = getChildAt(i); MarginLayoutParams lp = (MarginLayoutParams) child .getLayoutParams(); int childWidth = child.getMeasuredWidth(); int childHeight = child.getMeasuredHeight(); // 如果已經需要換行 if (childWidth + lp.leftMargin + lp.rightMargin + lineWidth > width) { // 記錄這一行所有的View以及最大高度 mLineHeight.add(lineHeight); // 將當前行的childView保存，然後開啓新的ArrayList保存下一行的childView mAllViews.add(lineViews); lineWidth = 0;// 重置行寬 lineViews = new ArrayList<View>(); } /** * 如果不需要換行，則累加 */ lineWidth += childWidth + lp.leftMargin + lp.rightMargin; lineHeight = Math.max(lineHeight, childHeight + lp.topMargin + lp.bottomMargin); lineViews.add(child); } // 記錄最後一行 mLineHeight.add(lineHeight); mAllViews.add(lineViews); int left = 0; int top = 0; // 得到總行數 int lineNums = mAllViews.size(); for (int i = 0; i < lineNums; i++) { // 每一行的所有的views lineViews = mAllViews.get(i); // 當前行的最大高度 lineHeight = mLineHeight.get(i); Log.e(TAG, "第" + i + "行 ：" + lineViews.size() + " , " + lineViews); Log.e(TAG, "第" + i + "行， ：" + lineHeight); // 遍歷當前行所有的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(); //計算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; } } }