Disable button for approve tx (#70)

src/screens/ApproveTransaction.tsx

@@ -260,7 +260,8 @@ const ApproveTransaction = ({ route }: SignRequestProps) => {
             <Button
               mode="contained"
               onPress={acceptRequestHandler}
-              loading={isTxLoading}>
+              loading={isTxLoading}
+              disabled={!balance && !cosmosStargateClient}>
               {isTxLoading ? 'Processing' : 'Yes'}
             </Button>
             <Button

src/styles/stylesheet.js

@@ -134,11 +134,12 @@ const styles = StyleSheet.create({
   approveTransaction: {
     height: '40%',
   },
+  // TODO: Fix button position
   buttonContainer: {
     flexDirection: 'row',
     marginLeft: 20,
     marginTop: 20,
-    marginBottom: 20,
+    marginBottom: 150,
     justifyContent: 'space-evenly',
   },
   badRequestContainer: {