问题描述
我正在尝试使用 Pencilkit 在应用程序中绘制一些东西。现在我想从我的文件中导出我的图纸，这样我就可以打开将它发送到其他设备，然后打开它（格式为 PKDrawing）。
解决方法
...
type GrabTypesAndConvertOne<T,U,TypeToConvert> = {
[K in keyof T as K extends K
? T[K] extends U
? K
: T[K] extends TypeToConvert
? K // <- Here is where the type change logic would live
: never
: never]: T[K];
};
type GrabbedTypes = GrabTypesAndConvertOne<A,string,PromiseFunc>
<?php
namespace Genealogy;
use \PDO;
use \Exception;
use \ArrayAccess;
use \Countable;
use \Iterator;
class Record implements Iterator,ArrayAccess
{
...
function save($output)
{
...
foreach($this->row as $fld => $value)
{
switch($fld)
{
case 'added':
{ // date added
$fldnames .= "$comma`$fld`";
$values .= "$comma:$fld";
$parms[$fld] = $today;
$comma = ',';
break;
} // date added
case 'addedtime':
{ // time added
$fldnames .= "$comma`$fld`";
$values .= "$comma:$fld";
$parms[$fld] = $currtime;
$comma = ',';
break;
} // time added
case 'updated':
{ // date updated
$fldnames .= "$comma`$fld`";
$values .= "$comma:$fld";
$parms[$fld] = $today;
$comma = ',';
break;
} // date updated
case 'updatedtime':
{ // time updated
$fldnames .= "$comma`$fld`";
$values .= "$comma:$fld";
$parms[$fld] = $currtime;
$comma = ',';
break;
} // time updated
case 'soundslike':
{
$fldnames .= "$comma`$fld`";
$values .= $comma .
"LEFT(SOUNDEX(`Surname`),4)" .
$comma = ',';
break;
}
default:
{
if (substr($fld,-7) == 'soundex')
{ // soundex updated
$fldnames .= "$comma`$fld`";
$srcfld = substr($fld,strlen($fld)-7);
$values .= $comma .
"LEFT(SOUNDEX(:$srcfld),4)";
$comma = ',';
} // soundex updated
else
if (is_string($prime) && $fld == $prime && $srvmg)
{ // let SQL server manage field value
} // let SQL server manage field value
else
{ // other fields
$fldnames .= "$comma`$fld`";
$values .= "$comma:$fld";
$parms[$fld] = $value;
$comma = ',';
} // other fields
// if I put return 0; here the function returns but the database is not updated
break;
} // default
} // switch
} // loop through all fields in record
// if I put return 0 here The ZEND engine crashes before getting to the return
$insert = "INSERT INTO $table ($fldnames) " .
"VALUES($values)";
$stmt = $connection->prepare($insert);
$insertText = debugPrepQuery($insert,$parms);
$this->lastSqlCmd = $insertText;
if ($stmt->execute($parms))
的类型为 var canvasView = PKCanvasView()
//user does drawing...
let data = canvasView.drawing.dataRepresentation()
。然后，您可以将其写入文件 (https://developer.apple.com/documentation/foundation/nsdata/1414800-write) 并根据需要导出。
例如，您可以使用 ExportFilesAction：https://www.youtube.com/watch?v=iDseNgvdTpA
要将这些数据加载回 data，您可以：
Data