我在这个问题上挣扎了将近两天。
我需要将Android应用程序与Web服务同步，如下所示：
用户按下同步按钮 - ＆gt;进行3次refrotit调用（一个用于用户设置，另一个用于联系人，另一个用于地址） - ＆gt;设置，联系人和地址保存在SQLite数据库中 - ＆gt;将出现一个消息框，其中包含成功消息和确定按钮 - ＆gt;按下时，按OK按钮，为新活动标记
我已经知道如何制作almos的所有内容，改装调用，Sqlite数据库上的插入，创建消息框，我唯一不知道该怎么做，是检查Sqlite操作是什么时候完成（因为有很多联系人，需要几秒钟才能将它们保存到数据库中），所以我可以调用消息框，如果我应该使用改进的异步调用或同步，比如在AsyncTask中一个接一个地进行？
这是我到目前为止所得到的：
// This is the method that makes the synchronization
private void execToken() {
// Gets a token to use in the requests
final String token = edtToken.getText().toString();
// Verify if the token is valid
if (!EdtValidador.validateToken(token)) {
txtInputToken.setError("Verifique seu Token");
edtToken.requestFocus();
} else {
// If is valid, does the job
txtInputToken.setErrorEnabled(false);
// Creates a progress dialog using the MaterialDialog lib
final MaterialDialog progressDialog;
progressDialog = new MaterialDialog.Builder(this)
.title("Verificando")
.content("Aguarde")
.cancelable(false)
.progress(true, 0)
.show();
progressDialog.show();
Log.i("ACTTOKEN", "ProgressDialog created");
// Verifiy if the token is already in the database
if (DBTeste.isTokenFilled(this, token)) {
progressDialog.dismiss();
// Creates a MessageBox saying that the token is already in the database
MessageBox.showAlert(this, "Erro ao adicionar Token", "Token já cadastrado");
} else {
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(HttpLoggingInterceptor.Level.BODY);
// Cliente OkHttp usado para adicionar o interceptor do logger
OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.interceptors().add(logging);
// Defines the Json date format
Gson gson = new GsonBuilder()
.setDateFormat("yyyy-MM-dd")
.create();
// Creates the retrofit instance
Retrofit retrofit = new Retrofit
.Builder()
.client(okHttpClient)
.baseUrl(WebServiceConfig.webSerApiIP)
.addConverterFactory(GsonConverterFactory.create(gson))
.build();
final ConfigApi configApi = retrofit.create(ConfigApi.class);
// Makes the first call using the token
Call<Config> callConfig = configApi.getConfig(token);
callConfig.enqueue(new Callback<Config>() {
@Override
public void onResponse(Response<Config> response, Retrofit retrofit) {
// Config object receives the response
Config config = response.body();
// If isn't null adds on the database
if (config != null && config.getToken() != null) {
Log.i("ACTTOKEN", "Resultado da resposta de callConfig: " + config.getToken());
try {
// Inserts the ConfigObject in the database
DBHelper dbHelper = new DBHelper(TokenActivity.this, token);
SQLiteDatabase conn = dbHelper.getWritableDatabase();
RepositorioConfig repositorioConfig = new RepositorioConfig(conn);
repositorioConfig.inserirConfig(config);
} catch (SQLiteException e) {
// Returns the error in the log
Log.i("ACTTOKEN", "Erro ao inserir TOKEN no banco de dados local: " + e.getMessage());
}
// Dismiss the MaterialDialog progressDialog
progressDialog.dismiss();
} else {
// Dismiss the progressDialog and shows another with a error message
progressDialog.dismiss();
MessageBox.showAlert(TokenActivity.this, "Token não encontrado", "Verifique o token informado");
Log.i("ACTTOKEN", "Erro ao baixar: Token inválido");
// Limpa o campo de texto
}
}
// In case of retrofit error
@Override
public void onFailure(Throwable t) {
progressDialog.dismiss();
MessageBox.showAlert(TokenActivity.this, "Erro de conexão", "Verifique sua conexão de internet e tente novamente");
Log.i("ACTTOKEN", "Erro ao baixar: " + t.getMessage());
}
});
////////// Donloads the Contats and save \\\\\\\\\\
final CadastroApi cadastroApi = retrofit.create(CadastroApi.class);
Call<List<Cadastro>> callCadastro = cadastroApi.getCadastro(token);
callCadastro.enqueue(new Callback<List<Cadastro>>() {
@Override
public void onResponse(Response<List<Cadastro>> response, Retrofit retrofit) {
List<Cadastro> cadastroList = response.body();
if (cadastroList != null){
Log.i("ACTTOKEN", "Resultado da resposta de callCadastro: " + cadastroList.get(0));
try{
DBHelper dbHelper = new DBHelper(TokenActivity.this, token);
SQLiteDatabase conn = dbHelper.getWritableDatabase();
RepositorioCadastro repositorioCadastro = new RepositorioCadastro(conn);
// Inserts each item of the list in the database
for ( Cadastro c : cadastroList){
repositorioCadastro.inserirCadastro(c);
Log.i("ACTTOKEN", "Cadastro inserido: " + cadastroList.indexOf(c));
}
}catch (SQLiteException e){
Log.i("ACTTOKEN", "Erro ao inserir Cadastro(s) no banco de dados local: " + e.getMessage());
}
}
}
@Override
public void onFailure(Throwable t) {
Log.i("ACTTOKEN", "Erro retrofit ao baixar Cadastros " + t.getMessage());
}
});
////////// Download the address and save them \\\\\\\\\\
final EnderecoApi enderecoApi = retrofit.create(EnderecoApi.class);
Call<List<Endereco>> callEndereco = enderecoApi.getEndereco(token);
callEndereco.enqueue(new Callback<List<Endereco>>() {
@Override
public void onResponse(Response<List<Endereco>> response, Retrofit retrofit) {
List<Endereco> enderecoList = response.body();
if (enderecoList != null) {
try {
DBHelper dbHelper = new DBHelper(TokenActivity.this, token);
SQLiteDatabase conn = dbHelper.getWritableDatabase();
RepositorioEndereco repositorioEndereco = new RepositorioEndereco(conn);
// Insere cada item da lista no Banco de dados
for (Endereco e : enderecoList) {
repositorioEndereco.inserirEndereco(e);
Log.i("ACTTOKEN", "Endereço inserido: " + enderecoList.indexOf(e));
}
} catch (SQLiteException e) {
Log.i("ACTTOKEN", "Erro ao inserir Endereço(s) no banco de dados local: " + e.getMessage());
}
}
}
@Override
public void onFailure(Throwable t) {
Log.i("ACTTOKEN", "Erro retrofit ao baixar Endereços " + t.getMessage());
}
});
}
}
答案 0 :(得分：0)
如果在数据库中插入期间没有发生异常（在女巫的情况下，你将被抛入捕获集团）在完成每个循环时都会完成。
for (Endereco e : enderecoList) {
repositorioEndereco.inserirEndereco(e);
}
//put your code right here!