Java 将“记住我”选项集成到LoginActivity
这是我的LoginActivity类，我想在这个类中添加记住我的选项Java 将“记住我”选项集成到LoginActivity,java,android,sharedpreferences,Java,Android,Sharedpreferences,这是我的LoginActivity类，我想在这个类中添加记住我的选项 public class LoginActivity extends Activity { ProgressDialog prgDialog; // Error Msg TextView Object TextView errorMsg; // Email Edit View Object EditText emailET; // Passwprd Edit View Object EditText pwdET; St
public class LoginActivity extends Activity {
ProgressDialog prgDialog;
// Error Msg TextView Object
TextView errorMsg;
// Email Edit View Object
EditText emailET;
// Passwprd Edit View Object
EditText pwdET;
String email;
// Get Password Edit View Value
String password;
Button button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
// Find Error Msg Text View control by ID
errorMsg = (TextView) findViewById(R.id.login_error);
// Find Email Edit View control by ID
emailET = (EditText) findViewById(R.id.txt_email);
// Find Password Edit View control by ID
pwdET = (EditText) findViewById(R.id.txt_pwd);
// Instantiate Progress Dialog object
prgDialog = new ProgressDialog(this);
// Set Progress Dialog Text
prgDialog.setMessage("Please wait...");
// Set Cancelable as False
prgDialog.setCancelable(false);
button = (Button) findViewById(R.id.btlogin);
final Button button = (Button) findViewById(R.id.btlogin);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
try {
// Get Email Edit View Value
String email = emailET.getText().toString();
// Get Password Edit View Value
String password = pwdET.getText().toString();
// When Email Edit View and Password Edit View have values
// other than Null
if (Utility.isNotNull(email) && Utility.isNotNull(password)) {
// When Email entered is Valid
if (Utility.validate(email)) {
new LoginAsyncTask(LoginActivity.this).execute(
email, password);
Toast.makeText(getApplicationContext(),
"Asynctask started", Toast.LENGTH_SHORT)
.show();
}
// When Email is invalid
else {
Toast.makeText(getApplicationContext(),
"Please enter valid email",
Toast.LENGTH_LONG).show();
}
}
// When any of the Edit View control left blank
else {
Toast.makeText(
getApplicationContext(),
"Please fill the form, don't leave any field blank",
Toast.LENGTH_LONG).show();
}
} catch (Exception ex) {
}
}
});
TextView registerScreen = (TextView) findViewById(R.id.link_to_register);
// Listening to register new account link
registerScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Switching to Register screen
Intent i = new Intent(getApplicationContext(),
RegisterActivity.class);
startActivity(i);
}
});
}
public class LoginAsyncTask extends AsyncTask<String, Integer, JSONObject> {
private JSONObject responseJson = null;
private Context contxt;
private Activity activity;
public LoginAsyncTask(Context context) {
// API = apiURL;
this.contxt = context;
}
// async task to accept string array from context array
@Override
protected JSONObject doInBackground(String... params) {
String path = null;
String response = null;
HashMap<String, String> request = null;
JSONObject requestJson = null;
DefaultHttpClient httpClient = null;
HttpPost httpPost = null;
StringEntity requestString = null;
ResponseHandler<String> responseHandler = null;
// get the username and password
Log.i("Email", params[0]);
Log.i("Password", params[1]);
try {
path = "http://192.168.0.xxx/xxxxxxx/xxxxxx/UserAuthentication";
new URL(path);
} catch (MalformedURLException e) {
e.printStackTrace();
}
try {
// set the API request
request = new HashMap<String, String>();
request.put(new String("Email"), params[0]);
request.put(new String("Password"), params[1]);
request.entrySet().iterator();
// Store locations in JSON
requestJson = new JSONObject(request);
httpClient = new DefaultHttpClient();
httpPost = new HttpPost(path);
requestString = new StringEntity(requestJson.toString());
// sets the post request as the resulting string
httpPost.setEntity(requestString);
httpPost.setHeader("Content-type", "application/json");
// Handles the response
responseHandler = new BasicResponseHandler();
response = httpClient.execute(httpPost, responseHandler);
responseJson = new JSONObject(response);
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
try {
responseJson = new JSONObject(response);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return responseJson;
}
@Override
protected void onPostExecute(JSONObject result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
String myResJson;
try {
myResJson = responseJson.getString("status");
String test = myResJson;
if (test.equals("200")) {
Intent intent = new Intent(contxt, ActivityMenu.class);
contxt.startActivity(intent);
} else {
Intent intent = new Intent(contxt, LoginActivity.class);
contxt.startActivity(intent);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
我需要帮助来整合这两个类。我试过了，但没有成功 这是我的生日礼物
public class LoginActivity extends Activity {
ProgressDialog prgDialog;
// Error Msg TextView Object
TextView errorMsg;
// Email Edit View Object
EditText emailET;
// Passwprd Edit View Object
EditText pwdET;
String email;
// Get Password Edit View Value
String password;
Button button;
public static String PREFS_NAME = "mypre";
public static String PREF_EMAIL = "email";
public static String PREF_PASSWORD = "password";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_login);
// Find Error Msg Text View control by ID
errorMsg = (TextView) findViewById(R.id.login_error);
// Find Email Edit View control by ID
emailET = (EditText) findViewById(R.id.txt_user);
// Find Password Edit View control by ID
pwdET = (EditText) findViewById(R.id.txt_pwd);
// Instantiate Progress Dialog object
prgDialog = new ProgressDialog(this);
// Set Progress Dialog Text
prgDialog.setMessage("Please wait...");
// Set Cancelable as False
prgDialog.setCancelable(false);
button = (Button) findViewById(R.id.btlogin);
final Button button = (Button) findViewById(R.id.btlogin);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
try {
// Get Email Edit View Value
String email = emailET.getText().toString();
// Get Password Edit View Value
String password = pwdET.getText().toString();
// When Email Edit View and Password Edit View have values
// other than Null
if (Utility.isNotNull(email) && Utility.isNotNull(password)) {
// When Email entered is Valid
if (Utility.validate(email)) {
if (emailET.getText().toString().equals(email)
&& pwdET.getText().toString()
.equals(password)) {
CheckBox ch = (CheckBox) findViewById(R.id.ch_rememberme);
if (ch.isChecked())
rememberMe(email, password); // save email
// and
// password
// show logout activity
showLogout(email);
}
new LoginAsyncTask(LoginActivity.this).execute(
email, password);
Toast.makeText(getApplicationContext(),
"Asynctask started", Toast.LENGTH_SHORT)
.show();
}
// When Email is invalid
else {
Toast.makeText(getApplicationContext(),
"Please enter valid email",
Toast.LENGTH_LONG).show();
}
}
// When any of the Edit View control left blank
else {
Toast.makeText(
getApplicationContext(),
"Please fill the form, don't leave any field blank",
Toast.LENGTH_LONG).show();
}
} catch (Exception ex) {
}
}
});
TextView registerScreen = (TextView) findViewById(R.id.link_to_register);
// Listening to register new account link
registerScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Switching to Register screen
Intent i = new Intent(getApplicationContext(),
RegisterActivity.class);
startActivity(i);
}
});
}
public void onStart() {
super.onStart();
// read email and password from SharedPreferences
getUser();
}
public void getUser() {
SharedPreferences pref = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
String email = pref.getString(PREF_EMAIL, null);
String password = pref.getString(PREF_PASSWORD, null);
if (email != null || password != null) {
// directly show logout form
showLogout(email);
}
}
public void rememberMe(String user, String password) {
// save email and password in SharedPreferences
getSharedPreferences(PREFS_NAME, MODE_PRIVATE).edit()
.putString(PREF_EMAIL, user).putString(PREF_PASSWORD, password)
.commit();
}
public void showLogout(String email) {
// display log out activity
Intent intent = new Intent(this, ActivityMenu.class);
intent.putExtra("user", email);
startActivity(intent);
}
public class LoginAsyncTask extends AsyncTask<String, Integer, JSONObject> {
private JSONObject responseJson = null;
private Context contxt;
private Activity activity;
public LoginAsyncTask(Context context) {
// API = apiURL;
this.contxt = context;
}
// async task to accept string array from context array
@Override
protected JSONObject doInBackground(String... params) {
String path = null;
String response = null;
HashMap<String, String> request = null;
JSONObject requestJson = null;
DefaultHttpClient httpClient = null;
HttpPost httpPost = null;
StringEntity requestString = null;
ResponseHandler<String> responseHandler = null;
// get the email and password
Log.i("Email", params[0]);
Log.i("Password", params[1]);
try {
path = "http://192.168.0.xxx/xxxxxxxx/xxxxx/UserAuthentication";
new URL(path);
} catch (MalformedURLException e) {
e.printStackTrace();
}
try {
// set the API request
request = new HashMap<String, String>();
request.put(new String("Email"), params[0]);
request.put(new String("Password"), params[1]);
request.entrySet().iterator();
// Store locations in JSON
requestJson = new JSONObject(request);
httpClient = new DefaultHttpClient();
httpPost = new HttpPost(path);
requestString = new StringEntity(requestJson.toString());
// sets the post request as the resulting string
httpPost.setEntity(requestString);
httpPost.setHeader("Content-type", "application/json");
// Handles the response
responseHandler = new BasicResponseHandler();
response = httpClient.execute(httpPost, responseHandler);
responseJson = new JSONObject(response);
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
try {
responseJson = new JSONObject(response);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return responseJson;
}
@Override
protected void onPostExecute(JSONObject result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
String myResJson;
try {
myResJson = responseJson.getString("status");
String test = myResJson;
if (test.equals("200")) {
Intent intent = new Intent(contxt, ActivityMenu.class);
contxt.startActivity(intent);
} else {
Intent intent = new Intent(contxt, LoginActivity.class);
contxt.startActivity(intent);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
公共类LoginActivity扩展活动{
进程对话；
//错误消息TextView对象
文本视图错误消息；
//电子邮件编辑视图对象
编辑文本电子邮件；
//Passwprd编辑视图对象
编辑文本pwdET；
字符串电子邮件；
//获取密码编辑视图值
字符串密码；
按钮；
公共静态字符串PREFS_NAME=“mypre”；
公共静态字符串PREF_EMAIL=“EMAIL”；
公共静态字符串PREF_PASSWORD=“PASSWORD”；
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
requestWindowFeature（窗口。功能\u无\u标题）；
setContentView（R.layout.activity\u登录）；
//按ID查找错误消息文本视图控件
errorMsg=（TextView）findViewById（R.id.login\u错误）；
//按ID查找电子邮件编辑视图控件
emailET=（EditText）findViewById（R.id.txt\u用户）；
//按ID查找密码编辑视图控件
pwdET=（EditText）findViewById（R.id.txt_pwd）；
//实例化进度对话框对象
prgDialog=新建进度对话框（此对话框）；
//设置进度对话框文本
setMessage（“请稍候…”）；
//将可取消设置为False
prgDialog.setCancelable（假）；
按钮=（按钮）findViewById（R.id.btlogin）；
最终按钮按钮=（按钮）findViewById（R.id.btlogin）；
setOnClickListener（新视图.OnClickListener（）{
公共void onClick（视图v）{
试一试{
//获取电子邮件编辑视图值
字符串email=emailET.getText（）.toString（）；
//获取密码编辑视图值
字符串密码=pwdET.getText（）.toString（）；
//当电子邮件编辑视图和密码编辑视图具有值时
//非空
if（Utility.isNotNull（电子邮件）和&Utility.isNotNull（密码））{
//当输入的电子邮件有效时
if（实用程序验证（电子邮件））{
if（emailET.getText（）.toString（）.equals）（电子邮件）
&&pwdET.getText（）.toString（）
.equals（密码））{
复选框ch=（复选框）findViewById（R.id.ch_rememberme）；
if（ch.isChecked（））
记住（电子邮件，密码）；//保存电子邮件
//及
//密码
//显示注销活动
退出（电子邮件）；
}
新建LoginAsyncTask（LoginActivity.this）。执行(
电子邮件、密码）；
Toast.makeText（getApplicationContext（），
“异步任务已启动”，Toast.LENGTH\u SHORT）
.show（）；
}
//当电子邮件无效时
否则{
Toast.makeText（getApplicationContext（），
“请输入有效电子邮件”，
Toast.LENGTH_LONG）.show（）；
}
}
//当任何“编辑视图”控件留空时
否则{
Toast.makeText(
getApplicationContext（），
“请填写表格，不要将任何字段留空”，
Toast.LENGTH_LONG）.show（）；
}
}捕获（例外情况除外）{
}
}
});
TextView注册表屏幕=（TextView）findViewById（R.id.link\u to\u注册表）；
//正在侦听注册新帐户链接
registerScreen.setOnClickListener（新视图.OnClickListener（）{
公共void onClick（视图v）{
//切换到寄存器屏幕
意图i=新意图（getApplicationContext（），
RegisterActivity.class）；
星触觉（i）；
}
});
}
public void onStart（）{
super.onStart（）；
//从SharedReferences读取电子邮件和密码
getUser（）；
}
public void getUser（）{
SharedReferences pref=GetSharedReferences（PREFS\u名称、模式\u私有）；
String email=pref.getString（pref_email，null）；
字符串密码=pref.getString（pref_密码，null）；
如果（电子邮件！=null | |密码！=null）{
//直接显示注销表单
退出（电子邮件）；
}
}
public void rememberMe（字符串用户、字符串密码）{
//在SharedReferences中保存电子邮件和密码
GetSharedReferences（首选项名称、模式专用项）.edit（）
.putString（首选电子邮件，用户）.putString（首选密码，密码）
.commit（）；
}
公开作废显示注销（字符串电子邮件）{
//显示注销活动
意向意向=新意向（此，ActivityMenu.class）；
intent.putExtra（“用户”，电子邮件）；
星触觉（意向）；
}
公共类LoginAsyncTask扩展异步任务{
私有JSONObject responseJson=null；
私人语境；
私人活动；
公共LoginAsyncTask（上下文）{
//API=apirl；
this.contxt=上下文；
}
//从上下文数组接受字符串数组的异步任务
@凌驾
受保护的JSONObject doInBackground（字符串…参数）{
字符串路径=null；
字符串响应=null；
HashMap请求=null；
JSONObject requestJson=null；
DefaultHttpClient httpClient=null；
HttpPost HttpPost=null；
StringEntity requestString=null；
ResponseHandler ResponseHandler=null；
//获取电子邮件和密码
Log.i（“电子邮件”，参数[0]）；
Log.i（“密码”，参数[1]）；
试一试{
path=“http://1
public class LoginActivity extends Activity {
ProgressDialog prgDialog;
// Error Msg TextView Object
TextView errorMsg;
// Email Edit View Object
EditText emailET;
// Passwprd Edit View Object
EditText pwdET;
String email;
// Get Password Edit View Value
String password;
Button button;
public static String PREFS_NAME = "mypre";
public static String PREF_EMAIL = "email";
public static String PREF_PASSWORD = "password";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_login);
// Find Error Msg Text View control by ID
errorMsg = (TextView) findViewById(R.id.login_error);
// Find Email Edit View control by ID
emailET = (EditText) findViewById(R.id.txt_user);
// Find Password Edit View control by ID
pwdET = (EditText) findViewById(R.id.txt_pwd);
// Instantiate Progress Dialog object
prgDialog = new ProgressDialog(this);
// Set Progress Dialog Text
prgDialog.setMessage("Please wait...");
// Set Cancelable as False
prgDialog.setCancelable(false);
button = (Button) findViewById(R.id.btlogin);
final Button button = (Button) findViewById(R.id.btlogin);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
try {
// Get Email Edit View Value
String email = emailET.getText().toString();
// Get Password Edit View Value
String password = pwdET.getText().toString();
// When Email Edit View and Password Edit View have values
// other than Null
if (Utility.isNotNull(email) && Utility.isNotNull(password)) {
// When Email entered is Valid
if (Utility.validate(email)) {
if (emailET.getText().toString().equals(email)
&& pwdET.getText().toString()
.equals(password)) {
CheckBox ch = (CheckBox) findViewById(R.id.ch_rememberme);
if (ch.isChecked())
rememberMe(email, password); // save email
// and
// password
// show logout activity
showLogout(email);
}
new LoginAsyncTask(LoginActivity.this).execute(
email, password);
Toast.makeText(getApplicationContext(),
"Asynctask started", Toast.LENGTH_SHORT)
.show();
}
// When Email is invalid
else {
Toast.makeText(getApplicationContext(),
"Please enter valid email",
Toast.LENGTH_LONG).show();
}
}
// When any of the Edit View control left blank
else {
Toast.makeText(
getApplicationContext(),
"Please fill the form, don't leave any field blank",
Toast.LENGTH_LONG).show();
}
} catch (Exception ex) {
}
}
});
TextView registerScreen = (TextView) findViewById(R.id.link_to_register);
// Listening to register new account link
registerScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Switching to Register screen
Intent i = new Intent(getApplicationContext(),
RegisterActivity.class);
startActivity(i);
}
});
}
public void onStart() {
super.onStart();
// read email and password from SharedPreferences
getUser();
}
public void getUser() {
SharedPreferences pref = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
String email = pref.getString(PREF_EMAIL, null);
String password = pref.getString(PREF_PASSWORD, null);
if (email != null || password != null) {
// directly show logout form
showLogout(email);
}
}
public void rememberMe(String user, String password) {
// save email and password in SharedPreferences
getSharedPreferences(PREFS_NAME, MODE_PRIVATE).edit()
.putString(PREF_EMAIL, user).putString(PREF_PASSWORD, password)
.commit();
}
public void showLogout(String email) {
// display log out activity
Intent intent = new Intent(this, ActivityMenu.class);
intent.putExtra("user", email);
startActivity(intent);
}
public class LoginAsyncTask extends AsyncTask<String, Integer, JSONObject> {
private JSONObject responseJson = null;
private Context contxt;
private Activity activity;
public LoginAsyncTask(Context context) {
// API = apiURL;
this.contxt = context;
}
// async task to accept string array from context array
@Override
protected JSONObject doInBackground(String... params) {
String path = null;
String response = null;
HashMap<String, String> request = null;
JSONObject requestJson = null;
DefaultHttpClient httpClient = null;
HttpPost httpPost = null;
StringEntity requestString = null;
ResponseHandler<String> responseHandler = null;
// get the email and password
Log.i("Email", params[0]);
Log.i("Password", params[1]);
try {
path = "http://192.168.0.xxx/xxxxxxxx/xxxxx/UserAuthentication";
new URL(path);
} catch (MalformedURLException e) {
e.printStackTrace();
}
try {
// set the API request
request = new HashMap<String, String>();
request.put(new String("Email"), params[0]);
request.put(new String("Password"), params[1]);
request.entrySet().iterator();
// Store locations in JSON
requestJson = new JSONObject(request);
httpClient = new DefaultHttpClient();
httpPost = new HttpPost(path);
requestString = new StringEntity(requestJson.toString());
// sets the post request as the resulting string
httpPost.setEntity(requestString);
httpPost.setHeader("Content-type", "application/json");
// Handles the response
responseHandler = new BasicResponseHandler();
response = httpClient.execute(httpPost, responseHandler);
responseJson = new JSONObject(response);
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
try {
responseJson = new JSONObject(response);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return responseJson;
}
@Override
protected void onPostExecute(JSONObject result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
String myResJson;
try {
myResJson = responseJson.getString("status");
String test = myResJson;
if (test.equals("200")) {
Intent intent = new Intent(contxt, ActivityMenu.class);
contxt.startActivity(intent);
} else {
Intent intent = new Intent(contxt, LoginActivity.class);
contxt.startActivity(intent);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}