优化菜单控件，自适应高度

Author: “xiaohaibin

app/src/main/java/com/stx/xhb/meituancategorydemo/MainActivity.java

@@ -68,8 +68,6 @@ private void initData() {
     }
 
     private void init() {
-        //动态设置菜单高度，自己根据自身需求来弄
-        mPageMenuLayout.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, (int) ((float) ScreenUtil.getScreenWidth() / 2.0f)));
         mPageMenuLayout.setPageDatas(homeEntrances, new PageMenuViewHolderCreator() {
             @Override
             public AbstractHolder createHolder(View itemView) {

pagemenulibrary/src/main/java/com/stx/xhb/pagemenulibrary/CustomViewPager.java

@@ -0,0 +1,43 @@
+package com.stx.xhb.pagemenulibrary;
+
+import android.content.Context;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.view.ViewPager;
+import android.util.AttributeSet;
+import android.view.View;
+
+/**
+ * @author: xiaohaibin.
+ * @time: 2019/3/12
+ * @mail:[email protected]
+ * @github:https://github.com/xiaohaibin
+ * @describe: 自定义viewpager，自适应高度
+ */
+public class CustomViewPager extends ViewPager {
+
+    public CustomViewPager(@NonNull Context context) {
+        super(context);
+    }
+
+    public CustomViewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        int height = 0;
+        for (int i = 0; i < getChildCount(); i++) {
+            View child = getChildAt(i);
+            child.measure(widthMeasureSpec,
+                    MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
+            int h = child.getMeasuredHeight();
+            if (h > height) {
+                height = h;
+            }
+        }
+        heightMeasureSpec = MeasureSpec.makeMeasureSpec(height,
+                MeasureSpec.EXACTLY);
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    }
+}

pagemenulibrary/src/main/java/com/stx/xhb/pagemenulibrary/PageMenuLayout.java

@@ -28,7 +28,7 @@
 public class PageMenuLayout<T> extends RelativeLayout {
     private static final int DEFAULT_ROW_COUNT = 2;
     private static final int DEFAULT_SPAN_COUNT = 5;
-    private ViewPager mViewPager;
+    private CustomViewPager mViewPager;
     /**
      * 行数
      */
@@ -52,8 +52,8 @@ public PageMenuLayout(Context context, @Nullable AttributeSet attrs, int defStyl
     }
 
     private void initView(Context context, AttributeSet attrs) {
-        mViewPager = new ViewPager(context);
-        addView(mViewPager, 0);
+        mViewPager = new CustomViewPager(context);
+        addView(mViewPager, new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
         TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.PageMenuLayout);
         if (typedArray != null) {
             mRowCount = typedArray.getInteger(R.styleable.PageMenuLayout_pagemenu_row_count, DEFAULT_ROW_COUNT);