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Android / Guides / Right-to-left

Supporting right-to-left (RTL) language documents in Android

To support right-to-left (RTL) language documents, the Apryse SDK provides a high-level API for changing the reading direction of documents in your document viewer.

Right to left

If you are using DocumentActivity or PdfViewCtrlTabHostFragment2 , you can enable right-to-left (RTL) support in your document viewer by setting it with ViewerConfig :

ViewerConfig.Builder builder = new ViewerConfig.Builder();
ViewerConfig config = builder
    .fullscreenModeEnabled(true)
    .multiTabEnabled(true)
    .documentEditingEnabled(true)
    .longPressQuickMenuEnabled(true)
    // ...
    .rightToLeftModeEnabled(true)   // Enable RTL mode, must also call showRightToLeftOption
    .showRightToLeftOption(true)    // Show RTL toggle button in view mode dialog
    .build();
ViewerConfig.Builder builder = new ViewerConfig.Builder();
ViewerConfig config = builder
    .FullscreenModeEnabled(true)
    .MultiTabEnabled(true)
    .DocumentEditingEnabled(true)
    .LongPressQuickMenuEnabled(true)
    // ...
    .RightToLeftModeEnabled(true)   // Enable RTL mode, must also call showRightToLeftOption
    .ShowRightToLeftOption(true)    // Show RTL toggle button in view mode dialog
    .Build();
Note that if you call rightToLeftModeEnabled you must also call showRightToLeftOption in order for right-to-left (RTL) mode to be enabled.

If you would like more granular control over your document viewer, you can enable right-to-left (RTL) directly in PDFViewCtrl by calling PDFViewCtrl.setRightToLeftLanguage(true).

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