GridView dynamic height

CalendarView를 만들던 중 매월마다 표시되는 주가 4~6주로 다양하여 최대 6주로 고정하여 표시하지 않고

해당 주 수에 맞게 표시하도록 하기 위해 Content에 따라 GridView의 Height가 변경되도록 해보았다.

import android.content.Context; import android.database.DataSetObserver; import android.util.AttributeSet; import android.view.View; import android.view.ViewGroup; import android.widget.GridView; import android.widget.ListAdapter; public class ExGridView extends GridView{ private final boolean isDynamicHeight = true; private int mContentHeight = 0; private DataSetObserver mDataObserver = new DataSetObserver(){ @Override public void onChanged() { mContentHeight = 0; super.onChanged(); } }; public ExGridView(Context context) { super(context); } public ExGridView(Context context, AttributeSet attrs) { super(context, attrs); } public ExGridView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public int getTotalContentHeight(){ int verticalSpacing = getVerticalSpacing(); int columns = getNumColumns(); int rows = 0; int height = 0; ListAdapter adapter = getAdapter(); if(adapter==null){ return 0; } rows = (adapter.getCount()/columns) + ((adapter.getCount()%columns) != 0 ? 1 : 0); if(rows<1){ return 0; } for(int i=0; i<rows; i++){ View v =adapter.getView(i*columns, null, this); v.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); height += v.getMeasuredHeight(); } return height+(verticalSpacing*(rows-1)); } @Override public void setAdapter(final ListAdapter adapter) { mContentHeight = 0; if(adapter!=null){ try{ adapter.registerDataSetObserver(mDataObserver); } catch(Exception e){ } } super.setAdapter(adapter); } @Override public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { if (isDynamicHeight){ if(mContentHeight==0){ mContentHeight = getTotalContentHeight(); } int expandSpec = MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK, MeasureSpec.AT_MOST); super.onMeasure(widthMeasureSpec, expandSpec); int width=getMeasuredWidth(); int height=getMeasuredHeight(); height = mContentHeight > height ? mContentHeight : height; ViewGroup.LayoutParams params = getLayoutParams(); params.height = height; setLayoutParams(params); setMeasuredDimension(width, height); } else { super.onMeasure(widthMeasureSpec, heightMeasureSpec); } } }