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Medium - Android/Java Interfaces like a Boss! - Contracts implementations (Presenter)
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public class AccountManagerPresenterImpl implements AccountManagerPresenter { | |
private final ViewContract viewContract; | |
public MainPresenter(ViewContract viewContract) { | |
this.viewContract = viewContract; | |
} | |
@Override | |
public void onUpdateAccount(String newName, String newEmail) { | |
// Executado quando o usuário clicar no botão de | |
// atualizar conta | |
validateData(newName, newEmail); | |
} | |
private void validateData(String newName, String newEmail) { | |
if (newName.isEmpty() || newEmail.isEmpty()) | |
viewContract.onShowError("Name and email must be set"); | |
else { | |
viewContract.onShowLoading(); | |
submitUpdate(); | |
} | |
} | |
private void submitUpdate() { | |
// Executado para fazer alguma comunicação com API's ou | |
// banco de dados | |
//... | |
// Se a requisição ocorrer com sucesso: | |
viewContract.onAccountUpdate(); | |
viewContract.onHideLoading(); | |
} | |
@Override | |
public void onRemoveAccount() { | |
// Executado quando o usuário clicar no botão de | |
// remover conta | |
viewContract.onAccountRemoved(); | |
} | |
} |
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