1. 程式人生 > >android ScrollView中巢狀GridView,ListView只顯示一行的解決辦法

android ScrollView中巢狀GridView,ListView只顯示一行的解決辦法

注:本文是由網上大神分享的解決方案彙集而成

方法一:

重寫ListView、GridView:

重寫ListView:

public class MyListView extends ListView {

	public MyListView(Context context) {
		// TODO Auto-generated method stub
		super(context);
	}

	public MyListView(Context context, AttributeSet attrs) {
		// TODO Auto-generated method stub
		super(context, attrs);
	}

	public MyListView(Context context, AttributeSet attrs, int defStyle) {
		// TODO Auto-generated method stub
		super(context, attrs, defStyle);
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		// TODO Auto-generated method stub
		int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
				MeasureSpec.AT_MOST);
		super.onMeasure(widthMeasureSpec, expandSpec);
	}
}
重寫GridView:
/**
 * 自定義gridview,解決ListView中巢狀gridview顯示不正常的問題(1行半)
 * @author wangyx
 * @version 1.0.0 2012-9-14
 */
public class MyGridView extends GridView{
	  public MyGridView(Context context, AttributeSet attrs) { 
	        super(context, attrs); 
	    } 
	 
	    public MyGridView(Context context) { 
	        super(context); 
	    } 
	 
	    public MyGridView(Context context, AttributeSet attrs, int defStyle) { 
	        super(context, attrs, defStyle); 
	    } 
	 
	    @Override 
	    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
	 
	        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, 
	                MeasureSpec.AT_MOST); 
	        super.onMeasure(widthMeasureSpec, expandSpec); 
	    } 
}
xml中的佈局:
<com.xxx.MyGridView 
             android:id="@+id/mygridview" 
             android:layout_width="fill_parent" 
             android:layout_height="wrap_content" 
             android:gravity="center" 
             android:horizontalSpacing="5dp" 
             android:numColumns="4" 
             android:stretchMode="columnWidth" 
             android:verticalSpacing="6dp" /> 
此方案親測有效。

方法二:通過計算出來ListView或者GridView中的子列高度和 進行顯示:

public void setListViewHeightBasedOnChildren(ListView listView) {  
    ListAdapter listAdapter = listView.getAdapter();   
    if (listAdapter == null) {  
        return;  
    }  

    int totalHeight = 0;  
    for (int i = 0; i < listAdapter.getCount(); i++) {  
        View listItem = listAdapter.getView(i, null, listView);  
        listItem.measure(0, 0);  
        totalHeight += listItem.getMeasuredHeight();  
    }  

    ViewGroup.LayoutParams params = listView.getLayoutParams();  
    params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));  
    ((MarginLayoutParams)params).setMargins(10, 10, 10, 10);
    listView.setLayoutParams(params);  
} 
此方案,測試過同樣可以達到效果