gridview

How to center gridView items in Flutter?

由 此生再无相见时 提交于 2020-04-16 03:53:36
问题 I have a 4*4 grid view, but sometimes instead of 16 items there might only be 15 items, to the last row looks not so nice... I am wondered is there any way to center items in gridView row? Or there might be some other solution which can solve my task? 回答1: as an option you can use Wrap widget instead of Grid here is an example import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return

How to center gridView items in Flutter?

由 我的梦境 提交于 2020-04-16 03:53:14
问题 I have a 4*4 grid view, but sometimes instead of 16 items there might only be 15 items, to the last row looks not so nice... I am wondered is there any way to center items in gridView row? Or there might be some other solution which can solve my task? 回答1: as an option you can use Wrap widget instead of Grid here is an example import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return

showing camera capture image to gridview

由 拥有回忆 提交于 2020-04-14 07:36:46
问题 I am developing an app in which, i click image using camera and show it into an grid view. but my image not showing in image view without showing any error. but when i debug the project i notice that, my array list is empty. i don't understand exactly where my code going wrong. here is my code : /* private GridView gvGallery;*/ protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super.onActivityResult(requestCode, resultCode, data

showing camera capture image to gridview

由 蹲街弑〆低调 提交于 2020-04-14 07:35:51
问题 I am developing an app in which, i click image using camera and show it into an grid view. but my image not showing in image view without showing any error. but when i debug the project i notice that, my array list is empty. i don't understand exactly where my code going wrong. here is my code : /* private GridView gvGallery;*/ protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super.onActivityResult(requestCode, resultCode, data

convertView is being passed as null even if the view exists

由 江枫思渺然 提交于 2020-04-10 18:50:28
问题 I have developed an android application where image and text are displayed in a grid view and when the user scrolls down next ten items(image and text) are displayed. The problem arises when the getView method of adapter is called after adapter.notifyDataSetChanged() call. The adapter recycles the data but positions are rearranged and repeated in grid view. I hadn't faced this problem till I added the condition to check if convertView is null. Activity class : public class

convertView is being passed as null even if the view exists

由 旧巷老猫 提交于 2020-04-10 18:50:26
问题 I have developed an android application where image and text are displayed in a grid view and when the user scrolls down next ten items(image and text) are displayed. The problem arises when the getView method of adapter is called after adapter.notifyDataSetChanged() call. The adapter recycles the data but positions are rearranged and repeated in grid view. I hadn't faced this problem till I added the condition to check if convertView is null. Activity class : public class

GRIDVIEW排序的方法

由 与世无争的帅哥 提交于 2020-04-08 06:32:47
如果是在前台写数据源的话，例如： <asp:ObjectDataSource ID="objDataSourceSgridView" runat="server" TypeName=" 。。。" SelectMethod="GetMethodAll"> </asp:ObjectDataSource> 就可以这样写： protected void sgvw_Sorting(object sender, GridViewSortEventArgs e) { DataTable sortDataTable = sgvw.DataSource as DataTable; if (sortDataTable != null) { DataView sortDataView = new DataView(sortDataTable); sortDataView.Sort = e.SortExpression + "" + ConvertSortDirection(e.SortDirection); sgvw.DataSource=sortDataView; sgvw.DataBind(); } } //改变排序方向 private string ConvertSortDirection(SortDirection Direction) { string a_SortDirection =

GridView控件(11) - 合并指定列的相邻且内容相同的单元格

由 烂漫一生 提交于 2020-04-07 22:02:49
扩展GridView控件： 合并指定列的相邻且内容相同的单元格 使用方法（设置属性）： MergeCells - 需要合并单元格的列的索引（用逗号“,”分隔） 关键代码 实现“合并指定列的相邻且内容相同的单元格”功能的代码 Code1using System; 2using System.Collections.Generic; 3using System.Text; 4 5using System.Web.UI.WebControls; 6using System.Web.UI; 7 8namespace YYControls.Helper 9{10 /**//**//**//// <summary>11 /// SmartGridView的Helper12 /// </summary>13 public class SmartGridView14 {15 /**//**//**//// <summary>16 /// 合并指定列的相邻且内容相同的单元格17 /// </summary>18 /// <param name="gv">GridView</param>19 /// <param name="columnIndices">需要合并单元格的列的索引（用逗号“,”分隔）</param>20 public static void MergeCells(GridView gv

gridview合并相同的行

由 痴心易碎 提交于 2020-04-07 20:17:29
#region 方法：合并Gridview行 /// <summary> /// 合并GridView指定行单元格 /// </summary> /// <param name="gv">GridView</param> /// <param name="DataKeysName">DataKeys值（以此值为参照，如果此值相同，则将指定的单元格纵向合并）</param> /// <param name="rowIndex">要合并的列索引（从0开始）</param> protected void AppendGVRow(string DataKeysName, GridView gv, params int[] rowIndex) { try { int spanCount = 1;//合并的单元格跨的行数 int spanNum = -1;//用于确定需合并的起始行 for (int i = 0; i < rowIndex.Length; i++) { for (int j = 0; j < gv.Rows.Count - 1; j++) { if (gv.DataKeys[j][DataKeysName].ToString().Trim() == gv.DataKeys[j + 1][DataKeysName].ToString().Trim())//如果两行的text相同

2015Android移动开发应用主流菜单模式

由 妖精的绣舞 提交于 2020-04-07 08:53:08
1.Menu史上最牛的侧滑效果 http://www.itlanbao.com/code/20150909/10000/100518.html 2.炫酷MultiCardMenu叠加菜单 http://www.itlanbao.com/code/20150909/10000/100517.html 3.android menu 点击弹出和按钮按下动画特效 http://www.itlanbao.com/code/20150826/10000/100482.html 4.超智能化BorderMenu http://www.itlanbao.com/code/20150814/10000/100370.html 5.富有动感的AndroidSweetSheet http://www.itlanbao.com/code/20150812/10000/100339.html 6.灵活扩展与折叠的FoldingTabBar.Android http://www.itlanbao.com/code/20150812/10000/100338.html 来源： oschina 链接： https://my.oschina.net/u/2449503/blog/508728
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