我正在开发一个 Android 应用程序，其中有一个登录和注册选项。当新用户第一次进入应用程序时，他需要注册。当他按下登录选项时，他将被定向到帐户创建页面。他需要在其中提供用户名、密码和手机号码。所有这三个值都存储在 sqlite(应用程序内存)中，并创建一个密码并将其发送到用户提供的手机号码。下一页是注册页面，其中检查用户的用户名和密码以及他收到的密码。我执行此过程是为了验证手机号码。所以我的问题是，如果用户创建帐户并返回登录选项并输入用户名和密码..他将定向到应用程序首页...因为当帐户创建过程完成时，他的详细信息将保存在应用程序中数据库进行验证。所以用户不需要验证密码..那么有什么方法可以让登录按钮仅在注册过程后查看..或类似的东西...我在这里发布 siginactivity、signupactivity 和注册 Activity ..请检查如果发现任何错误请帮助我...
注册 Activity
public class SignUpActivity extends Activity
{
EditText editTextUserName,editTextPassword,editTextConfirmPassword, editMobileNumber;
Button btnCreateAccount;
// Progress Dialog
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
Random r = new Random();
int number =r.nextInt(9999 - 1000) + 1000;
LoginDataBaseAdapter loginDataBaseAdapter;
private static String url_create_data = "http://iascpl.com/app/create_data1.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.signup_xm);
// get Instance of Database Adapter
loginDataBaseAdapter=new LoginDataBaseAdapter(this);
loginDataBaseAdapter=loginDataBaseAdapter.open();
// Get References of Views
editTextUserName=(EditText)findViewById(R.id.editTextUserName);
editTextPassword=(EditText)findViewById(R.id.editTextPassword);
editTextConfirmPassword=(EditText)findViewById(R.id.editTextConfirmPassword);
editMobileNumber = (EditText)findViewById(R.id.mobileNumber);
btnCreateAccount=(Button)findViewById(R.id.buttonCreateAccount);
btnCreateAccount.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String name=editTextUserName.getText().toString();
String password=editTextPassword.getText().toString();
String confirmPassword=editTextConfirmPassword.getText().toString();
String phoneNo = editMobileNumber.getText().toString();
String sms = Integer.toString(number);
//Intent intent = new Intent(SignUpActivity.this, RegisterActivity.class);
//intent.putExtra("number", sms + "");
//startActivity(intent);
//new CreateNewProduct().execute();
StringTokenizer st=new StringTokenizer(phoneNo,",");
while (st.hasMoreElements())
{
String tempMobileNumber = (String)st.nextElement();
if(tempMobileNumber.length()>0 && sms.trim().length()>0)
{
sendSMS(tempMobileNumber, sms);
}
else
{
Toast.makeText(getBaseContext(),
"Please enter both phone number and message.",
Toast.LENGTH_SHORT).show();
}
}
// check if any of the fields are vacant
if(name.equals("")||password.equals("")||confirmPassword.equals(""))
{
Toast.makeText(getApplicationContext(), "Field Vaccant", Toast.LENGTH_LONG).show();
return;
}
// check if both password matches
if(!password.equals(confirmPassword))
{
Toast.makeText(getApplicationContext(), "Password does not match", Toast.LENGTH_LONG).show();
return;
}
else
{
// Save the Data in Database
loginDataBaseAdapter.insertEntry(name, password);
Toast.makeText(getApplicationContext(), "Passcode is sent to the mobile number you provided. ", Toast.LENGTH_LONG).show();
new CreateNewProduct().execute();
// Intent intent = new Intent(SignUpActivity.this, RegisterActivity.class);
// intent.putExtra("number", sms + "");
// startActivity(intent);
}
}
});
}
private void sendSMS(String phoneNumber, String message)
{
String SENT = "SMS_SENT";
String DELIVERED = "SMS_DELIVERED";
PendingIntent sentPI = PendingIntent.getBroadcast(this, 0,
new Intent(SENT), 0);
PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0,
new Intent(DELIVERED), 0);
//---when the SMS has been sent---
registerReceiver(new BroadcastReceiver(){
@Override
public void onReceive(Context arg0, Intent arg1) {
switch (getResultCode())
{
case Activity.RESULT_OK:
Toast.makeText(getBaseContext(), "SMS sent",
Toast.LENGTH_SHORT).show();
break;
case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
Toast.makeText(getBaseContext(), "Generic failure",
Toast.LENGTH_SHORT).show();
break;
case SmsManager.RESULT_ERROR_NO_SERVICE:
Toast.makeText(getBaseContext(), "No service",
Toast.LENGTH_SHORT).show();
break;
case SmsManager.RESULT_ERROR_NULL_PDU:
Toast.makeText(getBaseContext(), "Null PDU",
Toast.LENGTH_SHORT).show();
break;
case SmsManager.RESULT_ERROR_RADIO_OFF:
Toast.makeText(getBaseContext(), "Radio off",
Toast.LENGTH_SHORT).show();
break;
}
}
},new IntentFilter(SENT));
//---when the SMS has been delivered---
registerReceiver(new BroadcastReceiver(){
@Override
public void onReceive(Context arg0, Intent arg1) {
switch (getResultCode())
{
case Activity.RESULT_OK:
Toast.makeText(getBaseContext(), "SMS delivered",
Toast.LENGTH_SHORT).show();
break;
case Activity.RESULT_CANCELED:
Toast.makeText(getBaseContext(), "SMS not delivered",
Toast.LENGTH_SHORT).show();
break;
}
}
}, new IntentFilter(DELIVERED));
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
loginDataBaseAdapter.close();
}
/**
* Background Async Task to Create new product
* */
class CreateNewProduct extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(SignUpActivity.this);
pDialog.setMessage("Creating a new account..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
protected String doInBackground(String... args) {
String name = editTextUserName.getText().toString();
String password = editTextPassword.getText().toString();
String mobile = editMobileNumber.getText().toString();
String sms = Integer.toString(number);
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("name", name));
params.add(new BasicNameValuePair("password", password));
params.add(new BasicNameValuePair("mobile", mobile));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_data,
"POST", params);
// check log cat fro response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
Intent i = new Intent(SignUpActivity.this, RegisterActivity.class);
i.putExtra("number", sms + "");
startActivity(i);
//closing this screen
//finish();
} else {
// failed to create product
return "false";
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
/*protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}*/
protected void onPostExecute(String result)
{
// TODO Auto-generated method stub
super.onPostExecute(result);
if (result == "false")
Toast.makeText(SignUpActivity.this, "User Name already exists. Please choose another user name ", Toast.LENGTH_LONG).show();
pDialog.dismiss();
}
}
}
注册 Activity
public class RegisterActivity extends Activity {
LoginDataBaseAdapter loginDataBaseAdapter;
Button btnReg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.register_xm);
loginDataBaseAdapter=new LoginDataBaseAdapter(this);
loginDataBaseAdapter=loginDataBaseAdapter.open();
btnReg = (Button) findViewById (R.id.buttonRegister);
final EditText editTextUserName=(EditText)findViewById(R.id.editTextUserNameToLogin);
final EditText editTextPassword=(EditText)findViewById(R.id.editTextPasswordToLogin);
final EditText editTextMobileNumber = (EditText)findViewById(R.id.editText1);
btnReg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String userName=editTextUserName.getText().toString();
String password=editTextPassword.getText().toString();
String mobileNumber = editTextMobileNumber.getText().toString();
// fetch the Password form database for respective user name
String storedPassword=loginDataBaseAdapter.getSinlgeEntry(userName);
String sd = getIntent().getStringExtra("number");
String name = editTextUserName.getText().toString();
// check if the Stored password matches with Password entered by user
if(password.equals(storedPassword) && (mobileNumber.equals(sd)))
{
Toast.makeText(RegisterActivity.this, "Congrats: Registration Successfull", Toast.LENGTH_LONG).show();
Intent in = new Intent(RegisterActivity.this,HomePageActivity.class);
startActivity(in);
}
else
{
Toast.makeText(RegisterActivity.this, "User Name, Passcode or Password does not match", Toast.LENGTH_LONG).show();
}
}
});
}
@Override
protected void onDestroy()
{
super.onDestroy();
// Close The Database
loginDataBaseAdapter.close();
}
}
登录 Activity
public class SignInActivity extends Activity
{
/*LoginDataBaseAdapter loginDataBaseAdapter;*/
Button btnsignin;
EditText username,userpassword;
TextView txtName;
// Progress Dialog
private ProgressDialog pDialog;
// JSON parser class
JSONParser jsonParser = new JSONParser();
// single product url
private static String url_get_name = "http://iascpl.com/app/get_name_details.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCT = "product";
private static final String TAG_PASSWORD = "password";
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.signin_xm);
/*loginDataBaseAdapter=new LoginDataBaseAdapter(this);
loginDataBaseAdapter=loginDataBaseAdapter.open();*/
btnsignin = (Button) findViewById ( R.id.button401);
username=(EditText)findViewById(R.id.editText401);
userpassword=(EditText)findViewById(R.id.editText402);
btnsignin.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
new GetProductDetails().execute();
/* String storedPassword=loginDataBaseAdapter.getSinlgeEntry(userName);*/
// check if the Stored password matches with Password entered by user
/*if(password.equals(storedPassword))
{
Toast.makeText(SignInActivity.this, "Login Successfull", Toast.LENGTH_LONG).show();
Intent i = new Intent(SignInActivity.this,HomePageActivity.class);
startActivity(i);
}
else
{
Toast.makeText(SignInActivity.this, "User Name or Password does not match", Toast.LENGTH_LONG).show();
}*/
}
});
}
class GetProductDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(SignInActivity.this);
pDialog.setMessage("Loading the result... Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Getting product details in background thread
* */
protected String doInBackground(String... args)
{
String pid=username.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("pid", pid));
// getting product details by making HTTP request
// Note that product details url will use GET request
JSONObject json = jsonParser.makeHttpRequest(
url_get_name, "GET", params);
// check your log for json response
Log.d("Single Product Details", json.toString());
// json success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully received product details
JSONArray productObj = json
.getJSONArray(TAG_PRODUCT); // JSON Array
// get first product object from JSON Array
final JSONObject product = productObj.getJSONObject(0);
txtName = (TextView) findViewById(R.id.textView1);
// product with this pid found
// Edit Text
runOnUiThread(new Runnable() {
@Override
public void run()
{
// TODO Auto-generated method stub
try {
txtName.setText(product.getString(TAG_PASSWORD));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}else{
// product with pid not found
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/*
@Override
protected void onDestroy()
{
super.onDestroy();
// Close The Database
loginDataBaseAdapter.close();
}*/
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String result)
{
// dismiss the dialog once got all details
/*super.onPostExecute(result);
if (result == "false")
Toast.makeText(SignInActivity.this, "User Name already exists. Please choose another user name ", Toast.LENGTH_LONG).show();*/
pDialog.dismiss();
}
}
}
最佳答案
我理解你的问题...你正在将注册详细信息保存在sqlite中，因此当用户输入用户名和密码时，它会保存在sqlite中，下一步是注册过程，用户必须输入密码..但作为用户名密码保存在 sqlite 用户可以按后退按钮并返回并使用用户名和密码登录，从而避免注册过程... 在这里你可以做这样的事情。使用共享首选项
例如:注册成功后在注册页面给出值l。
SharedPreferences set = getSharedPreferences(PREFS_NAME, 0);
SharedPreferences.Editor ed = set.edit();
ed.putString("l", "l");
ed.commit();
并在您的主页中检查该值是否为 l，如果值为 l，则仅使您的登录按钮可见。您可以使用类似的方法使按钮不可见。
btn3.setVisibility(View.INVISIBLE);
btn4.setVisibility(View.INVISIBLE);
关于java - Android 应用程序登录和登录问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19899575/