Update examples to be compatible with new emulator

Author: psiemens

examples/create_account/main.go

@@ -57,7 +57,8 @@ func CreateAccountDemo() {
 	createAccountTx := flow.NewTransaction().
 		SetScript(createAccountScript).
 		SetProposalKey(serviceAcctAddr, serviceAcctKey.ID, serviceAcctKey.SequenceNumber).
-		SetPayer(serviceAcctAddr)
+		SetPayer(serviceAcctAddr).
+		AddAuthorizer(serviceAcctAddr)
 
 	// Sign the transaction with the service account, which already exists
 	// All new accounts must be created by an existing account

examples/deploy_contract/main.go

@@ -61,7 +61,8 @@ func DeployContractDemo() {
 	createAccountTx := flow.NewTransaction().
 		SetScript(createAccountScript).
 		SetProposalKey(serviceAcctAddr, serviceAcctKey.ID, serviceAcctKey.SequenceNumber).
-		SetPayer(serviceAcctAddr)
+		SetPayer(serviceAcctAddr).
+		AddAuthorizer(serviceAcctAddr)
 
 	err = createAccountTx.SignEnvelope(serviceAcctAddr, serviceAcctKey.ID, serviceSigner)
 	examples.Handle(err)
@@ -93,7 +94,8 @@ func DeployContractDemo() {
 	deployContractTx := flow.NewTransaction().
 		SetScript(deployScript).
 		SetProposalKey(myAddress, myAcctKey.ID, myAcctKey.SequenceNumber).
-		SetPayer(myAddress)
+		SetPayer(myAddress).
+		AddAuthorizer(myAddress)
 
 	err = deployContractTx.SignEnvelope(
 		myAddress,

examples/examples.go

@@ -46,7 +46,7 @@ func ServiceAccount(flowClient *client.Client) (flow.Address, *flow.AccountKey,
 	privateKey, _ := crypto.GeneratePrivateKey(crypto.ECDSA_P256, []byte(defaultServiceKeySeed))
 
 	// Service address is the first generated account address
-	addr := flow.ServiceAddress(flow.Mainnet)
+	addr := flow.ServiceAddress(flow.Emulator)
 
 	acc, err := flowClient.GetAccount(context.Background(), addr)
 	Handle(err)
@@ -110,7 +110,8 @@ func CreateAccount(flowClient *client.Client, publicKeys []*flow.AccountKey, cod
 	createAccountTx := flow.NewTransaction().
 		SetScript(createAccountScript).
 		SetProposalKey(serviceAcctAddr, serviceAcctKey.ID, serviceAcctKey.SequenceNumber).
-		SetPayer(serviceAcctAddr)
+		SetPayer(serviceAcctAddr).
+		AddAuthorizer(serviceAcctAddr)
 
 	err = createAccountTx.SignEnvelope(serviceAcctAddr, serviceAcctKey.ID, serviceSigner)
 	Handle(err)