Android ExpandableGridView的實現

標籤：

近期在做項目的時候碰到了這樣一個布局

 

 

 

在android中有種實現摺疊list方式是ExpandableListView  但是官方沒有ExpandableGridView 

那麼怎麼樣用ExpandableListView來實現一個ExpandableGridView呢

 

大概的原理是：在每個ExpandableListView 中顯示一行，用這行來載入一個GridView

口說無憑，貼上代碼

1.載入一個ExpandableListView

private SimpleDataAdapter simpleDataAdapter; private ExpandableListView mexpandableListview;        mexpandableListview = (ExpandableListView) findViewById(R.id.expandablelist);        mSuperAdapter = new SuperveseDataExpandableAdapter(this,mSuperveseData);        mexpandableListview.setAdapter(mSuperAdapter);        mexpandableListview.expandGroup(0);　　

　　2.重寫BaseExpandableListAdapter

重寫BaseExpandableListAdapter，主要是重寫getChildView方法 載入一個GridView 動態計算GridView 高度

    @Override    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {        if (convertView == null) {            convertView = layoutInflater.inflate(R.layout.view, null);        }        CustomGridView gridView = (CustomGridView) convertView .findViewById(R.id.GridView_toolbar);        gridView.setNumColumns(2);        gridView.setHorizontalSpacing(10);        gridView.setGravity(Gravity.CENTER);        GridAdapter adapter = new GridAdapter(context, superveseDatas.get(groupPosition).controlDatas);        gridView.setAdapter(adapter);// Adapter        int totalHeight = 0;       for (int size = 0; size < adapter.getCount(); size++) {            RelativeLayout relativeLayout = (RelativeLayout) adapter.getView(size, null, gridView);            TextView textView = (TextView) relativeLayout.getChildAt(0);            textView.measure(0, 0);            totalHeight += textView.getMeasuredHeight()*2;            if(size == adapter.getCount() -1){                if (size%2 == 0 ){                    totalHeight += textView.getMeasuredHeight()*2;                }            }        }        gridView.SetHeight(totalHeight);        return convertView;    }

　　另外一個地方也需要注意下：

getChildrenCount返回1 因為用一個Item 來載入GridView

 @Override    public int getChildrenCount(int groupPosition) {        return  1;    }

　　

 

最後實現的效果如下

 

 

 

Android ExpandableGridView的實現