add print orientation in print options

README.md

@@ -165,6 +165,7 @@ const styles = StyleSheet.create({
 | `html` | `string` |  HTML string to print
 | `fileName` | `string` | Custom Filename excluding .pdf extension or remote file url NOTE: iOS only supports https protocols
 | `printerURL` | `string` | **iOS Only:** URL returned from `selectPrinterMethod()`
+| `isLandscape` | `bool` | Landscape print; defalut value is false 
 
 
 ## selectPrinter()

android/src/main/java/com/christopherdro/RNPrint/RNPrintModule.java

@@ -55,6 +55,7 @@ public void print(final ReadableMap options, final Promise promise) {
 
         final String html = options.hasKey("html") ? options.getString("html") : null;
         final String filePath = options.hasKey("filePath") ? options.getString("filePath") : null;
+        final boolean isLandscape = options.hasKey("isLandscape")?options.getBoolean("isLandscape"):false;
 
         if ((html == null && filePath == null) || (html != null && filePath != null)) {
             promise.reject(getName(), "Must provide either `html` or `filePath`.  Both are either missing or passed together");
@@ -169,7 +170,10 @@ public void onLayout(PrintAttributes oldAttributes, PrintAttributes newAttribute
                     }
                 };
 
-                printManager.print(jobName, pda, null);
+                PrintAttributes printAttributes = new PrintAttributes.Builder()
+                        .setMediaSize(isLandscape?PrintAttributes.MediaSize.UNKNOWN_LANDSCAPE:PrintAttributes.MediaSize.UNKNOWN_PORTRAIT)
+                        .build();
+                printManager.print(jobName, pda, printAttributes);
                 promise.resolve(jobName);
 
             } catch (Exception e) {

ios/RNPrint/RNPrint.h

@@ -10,4 +10,5 @@
 @property NSString *filePath;
 @property NSString *htmlString;
 @property NSURL *printerURL;
+@property (nonatomic, assign) BOOL isLandscape;
 @end

ios/RNPrint/RNPrint.m

@@ -31,6 +31,10 @@ - (dispatch_queue_t)methodQueue
         _pickedPrinter = [UIPrinter printerWithURL:_printerURL];
     }
 
+    if(options[@"isLandscape"]) {
+        _isLandscape = [[RCTConvert NSNumber:options[@"isLandscape"]] boolValue];
+    }
+
     if ((_filePath && _htmlString) || (_filePath == nil && _htmlString == nil)) {
         reject(RCTErrorUnspecified, nil, RCTErrorWithMessage(@"Must provide either `html` or `filePath`. Both are either missing or passed together"));
     }
@@ -57,6 +61,7 @@ - (dispatch_queue_t)methodQueue
     printInfo.outputType = UIPrintInfoOutputGeneral;
     printInfo.jobName = [_filePath lastPathComponent];
     printInfo.duplex = UIPrintInfoDuplexLongEdge;
+    printInfo.orientation = _isLandscape? UIPrintInfoOrientationLandscape: UIPrintInfoOrientationPortrait;
 
     printInteractionController.printInfo = printInfo;
     printInteractionController.showsPageRange = YES;