文檔

聯絡我們

地址:香港科學園科技大道西19號3樓345室

電郵:[email protected]

電話/WhatsApp:+852 67112315

Print

檔案輸入允許多選

FileInput允許多選false

				
					{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"Control_FileInput_setMultiple\"><value name=\"this\"><block type=\"variables_get\"><field name=\"VAR\">fileInput</field></block></value><value name=\"isMultiple\"><shadow type=\"logic_boolean\"><field name=\"BOOL\">FALSE</field></shadow></value></block></xml>"}
				
			

這積木是用作設定是否讓用家選擇一個或多個檔案。

參數:

        • 螢幕項目(輸入控制:檔案輸入)
        • 顯示設定:布林值(True/False[預設])

輸出:N/A
示例代碼:

				
					{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>mainLayout</variable><variable>mainScreen</variable><variable>createFileInput</variable><variable>createButton</variable><variable>count</variable><variable>gettingFile</variable><variable>fileInput</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">mainLayout</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"ScreenItem_createLayout\"/></value><next><block type=\"variables_set\"><field name=\"VAR\">mainScreen</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Screen_create\"><value name=\"label\"><shadow type=\"text\"><field name=\"TEXT\">Main</field></shadow></value><value name=\"layout\"><block type=\"variables_get\"><field name=\"VAR\">mainLayout</field></block></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">createFileInput</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Control_createFileInput\"><mutation xmlns=\"http://www.w3.org/1999/xhtml\" _expanded=\"0\" _input_init=\"true\"></mutation><field name=\"fileTypeFilter\">FileInputTypeFilter.None</field><value name=\"isMultiple\"><shadow type=\"logic_boolean\"><field name=\"BOOL\">FALSE</field></shadow></value></block></value><next><block type=\"Control_FileInput_setMultiple\"><value name=\"this\"><block type=\"variables_get\"><field name=\"VAR\">createFileInput</field></block></value><value name=\"isMultiple\"><shadow type=\"logic_boolean\"><field name=\"BOOL\">FALSE</field></shadow></value><next><block type=\"ScreenItem_Layout_add\"><value name=\"this\"><block type=\"variables_get\"><field name=\"VAR\">mainLayout</field></block></value><value name=\"item\"><block type=\"variables_get\"><field name=\"VAR\">createFileInput</field></block></value><next><block type=\"variables_set\"><field name=\"VAR\">createButton</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Control_createButton\"><value name=\"content\"><shadow type=\"text\"><field name=\"TEXT\">Getting the total number of files</field></shadow></value></block></value><next><block type=\"ScreenItem_Layout_add\"><value name=\"this\"><block type=\"variables_get\"><field name=\"VAR\">mainLayout</field></block></value><value name=\"item\"><block type=\"variables_get\"><field name=\"VAR\">createButton</field></block></value><next><block type=\"variables_set\"><field name=\"VAR\">count</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Control_createTextBlock\"><mutation xmlns=\"http://www.w3.org/1999/xhtml\" _expanded=\"0\" _input_init=\"false\"></mutation></block></value><next><block type=\"ScreenItem_Layout_add\"><value name=\"this\"><block type=\"variables_get\"><field name=\"VAR\">mainLayout</field></block></value><value name=\"item\"><block type=\"variables_get\"><field name=\"VAR\">count</field></block></value><next><block type=\"ScreenItem_ScreenItem_onClick\"><value name=\"this\"><block type=\"variables_get\"><field name=\"VAR\">createButton</field></block></value><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">gettingFile</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Control_FileInput_getFiles\"><value name=\"this\"><block type=\"variables_get\"><field name=\"VAR\">createFileInput</field></block></value></block></value><next><block type=\"Control_TextBlock_setContent\"><value name=\"this\"><block type=\"variables_get\"><field name=\"VAR\">count</field></block></value><value name=\"content\"><block type=\"text_join\"><mutation items=\"3\"/><value name=\"ADD0\"><shadow type=\"text\"><field name=\"TEXT\">There are </field></shadow></value><value name=\"ADD1\"><shadow type=\"text\"><field name=\"TEXT\"/></shadow><block type=\"lists_length\"><value name=\"VALUE\"><block type=\"variables_get\"><field name=\"VAR\">gettingFile</field></block></value></block></value><value name=\"ADD2\"><shadow type=\"text\"><field name=\"TEXT\"> file(s).</field></shadow></value></block></value></block></next></block></statement></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></next></block></statement></block></xml>"}
				
			

當按下按鈕後,程式會顯示檔案的總數,輸出結果:

當設為true,輸出結果:

Previous 檔案類型限制
Next 檢查檔案輸入是否多選