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Archive for September 21st, 2019
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September 21, 2019

Change notification bar color on Android

I received a message from a reader asking if it was possible to change the color of an app's status bar on android. The answer is yes! There are even several ways to do this. Particularly I use the one I decided to share in the post: CHANGE THE COLO...(read more)
 
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September 21, 2019

Summary of VCL Video Tutorials this week (38/19)

Another week flew by and there are 3 new tutorial videos on YouTube. On Monday, TMS published the webinar how to Modernize your Applications for Windows 10 technologies using TMS components. In this webinar, you’ll learn about modern VCL controls,…Read more ›
 
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September 21, 2019

DevExtreme DataGrid Demo with DataSnap Server – The Front End

資料來源:網路前面提到 DevExtreme DataGrid Demo with DataSnap Server 1 + 2,已經知道 DevExtreme DataGrid 是如何向後端伺服器取得資料,其它的『新增』、『更新』、『刪除』要如何實作呢?在實作之前,要先知道 DataGrid 是如何動作的。新增在單筆新增後,可以看到送出的 POST 參數,是 JSON Object。可以看到後端在新增後回傳完整的單筆記錄,連之前 Get 所沒有的欄位資料也全部出現。修改修改使用 PUT,而且只會送出主鍵資料及被修改的欄位資料。 後端也是回傳完整的資料內容,應該是連同其它可能異動的畫面欄位一併刷新。刪除刪除使用 DELETE,僅送出主鍵資料。 刪除資料就不會再回傳任何資訊。單筆資料的處理到這裡可說是相當簡單易懂,但人生永遠不會是如此簡單。DataGrid 批次處理是如何做的?按照歷史經驗,可採用的批次處理作法有:畫面批次編修後存檔,仍然逐筆和後端連結。畫面批次編修後存檔,將編修的資料整包送到後端,由後端另行解析。究竟 DataGrid 的背景是如何處理的,我們可以在 ...
 
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September 21, 2019

서베이몽키(SurveyMonkey)를 프로젝트에 연동하기

서베이몽키(SurveyMonkey)는 설문 등 조사를 위해 많은 기업들이 활용하고 있는 솔루션입니다 (실제로 엠바...
September 2019
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