を使用してプリンターに文字列を送信しようとしてUIMarkupTextPrintFormatterいますが、ページの向きを変更しなければすべて問題ありません。デフォルトでは縦に設定されています。
ただし、ページの向きを横に設定すると、余白が最初のページを超えているかのように、レンダリングされた出力に空白のページが 1 つ追加されます。
印刷用のコードは次のとおりです。
let printController = UIPrintInteractionController.sharedPrintController()
let printInfo = UIPrintInfo(dictionary: nil)
printInfo.jobName = "Print Job"
printInfo.orientation = .Landscape
printController.printInfo = printInfo
let formatter = UIMarkupTextPrintFormatter(markupText: "Welcome")
formatter.contentInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
printController.printFormatter = formatter
printController.presentAnimated(true, completionHandler: nil)
もう 1 つ注意すべき点は、ページが横向きに設定されている場合、Xcode は自動レイアウトに関連するいくつかのエラーをログに記録することです。
the behavior of the UICollectionViewFlowLayout is not defined because:
the item height must be less than the height of the UICollectionView minus the section insets top and bottom values, minus the content insets top and bottom values.
The relevant UICollectionViewFlowLayout instance is <UICollectionViewFlowLayout: 0x7fa066097850>, and it is attached to <UICollectionView: 0x7fa06687f800; frame = (0 0; 375 313.5); clipsToBounds = YES; opaque = NO; autoresize = W+H; gestureRecognizers = <NSArray: 0x7fa066095e90>; layer = <CALayer: 0x7fa066098b30>; contentOffset: {0, 0}; contentSize: {666, 313.5}> collection view layout: <UICollectionViewFlowLayout: 0x7fa066097850>.
Make a symbolic breakpoint at UICollectionViewFlowLayoutBreakForInvalidSizes to catch this in the debugger.
the behavior of the UICollectionViewFlowLayout is not defined because:
the item height must be less than the height of the UICollectionView minus the section insets top and bottom values, minus the content insets top and bottom values.
The relevant UICollectionViewFlowLayout instance is <UICollectionViewFlowLayout: 0x7fa066097850>, and it is attached to <UICollectionView: 0x7fa06687f800; frame = (0 0; 375 313.5); clipsToBounds = YES; opaque = NO; autoresize = W+H; gestureRecognizers = <NSArray: 0x7fa066095e90>; layer = <CALayer: 0x7fa066098b30>; contentOffset: {0, 0}; contentSize: {666, 313.5}> collection view layout: <UICollectionViewFlowLayout: 0x7fa066097850>.
Make a symbolic breakpoint at UICollectionViewFlowLayoutBreakForInvalidSizes to catch this in the debugger.
Unbalanced calls to begin/end appearance transitions for <UIViewController: 0x7fa066085830>.
the behavior of the UICollectionViewFlowLayout is not defined because:
the item height must be less than the height of the UICollectionView minus the section insets top and bottom values, minus the content insets top and bottom values.
The relevant UICollectionViewFlowLayout instance is <UICollectionViewFlowLayout: 0x7fa063c55130>, and it is attached to <UICollectionView: 0x7fa064043000; frame = (0 0; 375 313.5); clipsToBounds = YES; opaque = NO; autoresize = W+H; gestureRecognizers = <NSArray: 0x7fa063c4a720>; layer = <CALayer: 0x7fa063c26e60>; contentOffset: {0, 0}; contentSize: {666, 313.5}> collection view layout: <UICollectionViewFlowLayout: 0x7fa063c55130>.
Make a symbolic breakpoint at UICollectionViewFlowLayoutBreakForInvalidSizes to catch this in the debugger.
the behavior of the UICollectionViewFlowLayout is not defined because:
the item height must be less than the height of the UICollectionView minus the section insets top and bottom values, minus the content insets top and bottom values.
The relevant UICollectionViewFlowLayout instance is <UICollectionViewFlowLayout: 0x7fa063c55130>, and it is attached to <UICollectionView: 0x7fa064043000; frame = (0 0; 375 313.5); clipsToBounds = YES; opaque = NO; autoresize = W+H; gestureRecognizers = <NSArray: 0x7fa063c4a720>; layer = <CALayer: 0x7fa063c26e60>; contentOffset: {0, 0}; contentSize: {666, 313.5}> collection view layout: <UICollectionViewFlowLayout: 0x7fa063c55130>.
Make a symbolic breakpoint at UICollectionViewFlowLayoutBreakForInvalidSizes to catch this in the debugger.
最初のページだけを印刷しようとしましたが、ページ範囲の設定について何も見つかりませんでしUIMarkupTextPrintFormatterた。startPage変数を設定できますが、2 ページ目に設定してもうまくいきません。何も設定しません。
この問題は、空白ページを取り除くか、印刷範囲を 1 ページのみに設定することで解決できますが、これまでのところ、いずれも達成できませんでした。何か案は？