Merge pull request #737 from SriramKiranSenthilkumar/master

Updated widget source files due to Flutter 3.0 Upgrade

Author: JayavigneshwaranG

packages/syncfusion_flutter_barcodes/example/README.md

@@ -0,0 +1,3 @@
+# Barcode example
+
+How to render Syncfusion Flutter Barcode generator widget?

packages/syncfusion_flutter_barcodes/example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

@@ -0,0 +1,5 @@
+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/renderers/one_dimensional/codabar_renderer.dart

@@ -42,7 +42,8 @@ class CodabarRenderer extends SymbologyRenderer {
           value[i] == 'B' ||
           value[i] == 'C' ||
           value[i] == 'D') {
-        throw 'The provided input cannot be encoded : ${value[i]}';
+        throw ArgumentError(
+            'The provided input cannot be encoded : ${value[i]}');
       }
     }
     return true;

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/renderers/one_dimensional/code128_renderer.dart

@@ -437,7 +437,8 @@ class Code128Renderer extends SymbologyRenderer {
       } else if (currentCharacter < 127) {
         return true;
       } else {
-        throw 'The provided input cannot be encoded : ${value[i]}';
+        throw ArgumentError(
+            'The provided input cannot be encoded : ${value[i]}');
       }
     }
     return false;

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/renderers/one_dimensional/code128a_renderer.dart

@@ -10,7 +10,8 @@ class Code128ARenderer extends Code128Renderer {
   bool getIsValidateInput(String value) {
     for (int i = 0; i < value.length; i++) {
       if (!code128ACharacterSets.contains(value[i])) {
-        throw 'The provided input cannot be encoded : ${value[i]}';
+        throw ArgumentError(
+            'The provided input cannot be encoded : ${value[i]}');
       }
     }
     return true;

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/renderers/one_dimensional/code128b_renderer.dart

@@ -10,7 +10,8 @@ class Code128BRenderer extends Code128Renderer {
   bool getIsValidateInput(String value) {
     for (int i = 0; i < value.length; i++) {
       if (!code128BCharacterSets.contains(value[i])) {
-        throw 'The provided input cannot be encoded : ${value[i]}';
+        throw ArgumentError(
+            'The provided input cannot be encoded : ${value[i]}');
       }
     }
     return true;

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/renderers/one_dimensional/code128c_renderer.dart

@@ -10,7 +10,8 @@ class Code128CRenderer extends Code128Renderer {
   bool getIsValidateInput(String value) {
     for (int i = 0; i < value.length; i++) {
       if (!code128CCharacterSets.contains(value[i])) {
-        throw 'The provided input cannot be encoded : ${value[i]}';
+        throw ArgumentError(
+            'The provided input cannot be encoded : ${value[i]}');
       }
     }
     return true;

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/renderers/one_dimensional/code39_extended_renderer.dart

@@ -145,7 +145,8 @@ class Code39ExtendedRenderer extends Code39Renderer {
   bool getIsValidateInput(String value) {
     for (int i = 0; i < value.length; i++) {
       if (value[i].codeUnitAt(0) > 127) {
-        throw 'The provided input cannot be encoded : ${value[i]}';
+        throw ArgumentError(
+            'The provided input cannot be encoded : ${value[i]}');
       }
     }
     return true;

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/renderers/one_dimensional/code39_renderer.dart

@@ -68,7 +68,8 @@ class Code39Renderer extends SymbologyRenderer {
   bool getIsValidateInput(String value) {
     for (int i = 0; i < value.length; i++) {
       if (!_character.contains(value[i])) {
-        throw 'The provided input cannot be encoded : ${value[i]}';
+        throw ArgumentError(
+            'The provided input cannot be encoded : ${value[i]}');
       }
     }
     return true;

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/renderers/one_dimensional/code93_renderer.dart

@@ -17,7 +17,8 @@ class Code93Renderer extends SymbologyRenderer {
   bool getIsValidateInput(String value) {
     for (int i = 0; i < value.length; i++) {
       if (!_character.contains(value[i])) {
-        throw 'The provided input cannot be encoded : ${value[i]}';
+        throw ArgumentError(
+            'The provided input cannot be encoded : ${value[i]}');
       }
     }
     return true;