我想让我的应用保存会话，以便在我杀死进程时不再登录：当我登录Main.java时，我会将我重定向到Menu.java然后在我再次杀死进程后他应该采取一个runit我没有登录就直接发送到Menu.java并保存了用户名
完全像这个图图http://www.tutorialspoint.com/android/android_session_management.htm
这是Main.java“登录页面”
public class Main extends Activity {
Button b;
EditText et,pass;
TextView tv;
HttpPost httppost;
StringBuffer buffer;
HttpResponse response;
HttpClient httpclient;
List<NameValuePair> nameValuePairs;
ProgressDialog dialog = null;
public static final String data = "ett";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button exit = (Button)findViewById(R.id.button18);
exit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
finish();
Intent exit = new Intent(Intent.ACTION_MAIN);
exit.addCategory(Intent.CATEGORY_HOME);
exit.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(exit);
}
});
b = (Button)findViewById(R.id.Button01);
et = (EditText)findViewById(R.id.username);
pass= (EditText)findViewById(R.id.password);
tv = (TextView)findViewById(R.id.tv);
b.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog = ProgressDialog.show(Main.this, "",
"Verification ...", true);
new Thread(new Runnable() {
public void run() {
login();
}
}).start();
}
});
}
void login(){
try{
httpclient=new DefaultHttpClient();
httppost= new HttpPost("http://192.168.1.4/android/etc.php"); // make sure the url is correct.
//add your data
nameValuePairs = new ArrayList<NameValuePair>(2);
// Always use the same variable name for posting i.e the android side variable name and php side variable name should be similar,
nameValuePairs.add(new BasicNameValuePair("username",et.getText().toString().trim())); // $Edittext_value = $_POST['Edittext_value'];
nameValuePairs.add(new BasicNameValuePair("password",pass.getText().toString().trim()));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
//Execute HTTP Post Request
response=httpclient.execute(httppost);
// edited by James from coderzheaven.. from here....
ResponseHandler<String> responseHandler = new BasicResponseHandler();
final String response = httpclient.execute(httppost, responseHandler);
System.out.println("Response : " + response);
runOnUiThread(new Runnable() {
public void run() {
tv.setText("Response from PHP : " + response);
dialog.dismiss();
}
});
if(response.equalsIgnoreCase("User Found")){
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(Main.this,"Login Success", Toast.LENGTH_SHORT).show();
}
});
SharedPreferences setting = getSharedPreferences(data, 0);
SharedPreferences.Editor editor = setting.edit();
editor.putString("et", et.getText().toString());
editor.commit();
Intent intent=new Intent(Main.this, Menu.class);
startActivity(intent);
}else{
showAlert();
}
}catch(Exception e){
dialog.dismiss();
System.out.println("Exception : " + e.getMessage());
}
}
public void showAlert(){
Main.this.runOnUiThread(new Runnable() {
public void run() {
AlertDialog.Builder builder = new AlertDialog.Builder(Main.this);
builder.setTitle("Erreur d'identification");
builder.setMessage("Code ou mot de passe incorrecte")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
});
AlertDialog alert = builder.create();
alert.show();
}
});
}
}
Menu.java这个应用程序应该在保存会话后启动
public class Menu extends ActionBarActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.menus);
Button button1 = (Button)findViewById(R.id.button1);
Button button3 = (Button)findViewById(R.id.button3);
Button button4 = (Button)findViewById(R.id.button4);
Button button14 = (Button)findViewById(R.id.button14);
Button button5 = (Button)findViewById(R.id.button5);
Button exit = (Button)findViewById(R.id.button18);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent1 = new Intent(Menu.this, emploi.class);
startActivity(intent1);
}
});
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent2 = new Intent(Menu.this, Maritimnews.class);
startActivity(intent2);
}
});
button4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent3 = new Intent(Menu.this, Resultats.class);
startActivity(intent3);
}
});
button14.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent4 = new Intent(Menu.this, Demande.class);
startActivity(intent4);
}
});
button5.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent5 = new Intent(Menu.this, Apropos.class);
startActivity(intent5);
}
});
exit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
finish();
Intent exit = new Intent(Intent.ACTION_MAIN);
exit.addCategory(Intent.CATEGORY_HOME);
exit.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(exit);
}
});
}
}
我不知道我在哪里准确地使用sharedprefer来保存会话 那里的共享偏好只是为了在Main.java和Menu.java之间传递数据 我不想添加另一个sheredPreferences来保存像facebook这样的会话意味着我在Main.java登录--- redirecte - ＆gt; Menu.java如果我再次关闭运行应用程序，他将从Menu.java :)开始，谢谢
答案 0 :(得分：0)
如果您以这种方式实施，用户将只在您的应用程序中登录一次，并将永久连接。最好的方法是这样做： 首先添加一个复选框进行登录，让用户决定是否要保存他的登录信息。 如果选中则添加共享首选项，如果取消选中则删除共享首选项。 读取主活动的onresume（）方法中的sharedpreferences，并在首选项不为null时直接向菜单活动添加一些逻辑
答案 1 :(得分：0)
我使用mySharedPreferences指示用户是否已登录，并且我从之前的活动传递一个int值，以了解用户是否只是输入了应用程序。
public class ConnectWithFaceBookActivity extends Activity{
int mode = Activity.MODE_PRIVATE;
private SharedPreferences mySharedPreferences;
private String TAG = "ConnectWithFaceBookActivity";
private TextView lblEmail;
private String accessToken;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.connect_with_facebook);
mySharedPreferences = this.getSharedPreferences( "facebook", Context.MODE_PRIVATE);
final SharedPreferences.Editor editor= mySharedPreferences.edit();
lblEmail = (TextView) findViewById(R.id.lblEmail);
LoginButton authButton = (LoginButton) findViewById(R.id.authButton);
Intent i = getIntent();
int logout = i.getIntExtra("LOGOUT", 0);
//checking if already sign in
if(logout!=1 && mySharedPreferences.getString("email","")!="")//1 represent logout button preesed
{
String mString;
mString= mySharedPreferences.getString("email","");
lblEmail.setText(mString);
Intent intent = new Intent(getApplicationContext(),MainActivity.class);
startActivity(intent);
finish();
}
authButton.setOnErrorListener(new OnErrorListener() {
@Override
public void onError(FacebookException error) {
Log.i(TAG, "Error " + error.getMessage());
}
});
// set permission list, Don't foeget to add email
authButton.setReadPermissions(Arrays.asList("public_profile","user_friends","email"));
// session state call back event
authButton.setSessionStatusCallback(new Session.StatusCallback()
{
@Override
public void call(Session session, SessionState state, Exception exception)
{
Boolean open = session.isOpened();
if (open)
{
Log.i(TAG,"Access Token"+ session.getAccessToken());
accessToken = session.getAccessToken();
Request.newMeRequest (session, new Request.GraphUserCallback()
{
@Override
public void onCompleted(GraphUser user,Response response)
{
if (user != null)
{
Log.i(TAG,"User ID "+ user.getId());
Log.i(TAG,"Email "+ user.asMap().get("email"));
String str = user.asMap().get("email").toString();
lblEmail.setText(str);
editor.putBoolean("isLogIn",true);
editor.putString("email",str);
//save the changes that you made
editor.commit();
Intent intent = new Intent(getApplicationContext(),MainActivity.class);
startActivity(intent);
finish();
}
}
}).executeAsync();
}
else
{
editor.putBoolean("isLogIn",false);
editor.putString("email","");
//save the changes that you made
editor.commit();
}
}
});
}
public static void callFacebookLogout(Context context) {
Session session = Session.getActiveSession();
if (session != null) {
if (!session.isClosed()) {
session.closeAndClearTokenInformation();
//clear your preferences if saved
}
} else {
session = new Session(context);
Session.setActiveSession(session);
session.closeAndClearTokenInformation();
//clear your preferences if saved
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
}
}