autofill password on edittext - android

i'm a little blocked with this thing. I want to fill one edittext's password when the user type its login. I have the login and password on one database sqlite. I have read on android developers that it can be done with a AutocompleTextView, but i only want to fill the edittext with its password, nothing else. It Anyone knows how can i do this?¿
Cheers

when you create your activity with the EditText get a handle on it and call setText() with the password from your database.

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Registered user check for lowercase or uppercase

I want to know how to check the existing users for either upper or lowercase when a new user is signing up. At present for example the followig two users can be registered
tom and Tom, both of these are considered as two separate users, so if this happens I want to sound off to the user that the username already exists. Where in code exactly can I do this?
You can create a textwatcher for the edittext where user enters loginname and when focus changes from the edittext get the string in there using getText and pass this to an api which will check the username with db to check for similarity and will return a status false if similar user exits and you can show a red underline or red hidden badge to side of the edittext on the basis of this result to notify the user that such a username already exists.

how to combine edit text with spinner

I am writing simple login activity.
I have login edit text and password edit text.
I am kepping login and pasword via sharedpreferences.
I want to make login field to rember previous logins (eg "aaa" and "aab") so when you type in edit text it give you some options and you can choose them to outo complite it.
How it can be done?
You should use AutoCompleteTextView instead of simple EditText
check dev link http://developer.android.com/reference/android/widget/AutoCompleteTextView.html
also check this link for detail http://www.javatpoint.com/android-autocompletetextview-example
You can use AutoCompleteTextView for the login field, and use a suitable adapter to display the values. If you are remembering the previous login IDs, then, you can store them in SQLite DB and use CursorAdapter to populate the auto complete text view.

I have an app where I am asking for input a username and password.Right now. It has been changed. Once the user clicks on login in the login menu

I have an app where I am asking for input a username and password.
Right now. It has been changed. Once the user clicks on login in the login menu.
The username should be refilled with a known username and we only ask the user to input password to improve user experience.
Could we use the exist username edit text in my layout file or i have to change to label instead of edit text? I know i can use setText() to populate the username edit text field.
The question is not about saving username (using sharedpreference). what is the best way to
change my code to use ( either edit box or label ).
Please let me know what is the best case to avoid too much change.
Use SharedPreferences to store the usreanme and then everytime you load the layout in your code, check your sharedPreferences and fill the username edittext using setText

How to use Shared-preferences to implement change password functionality in my Android application?

all
i want to create one activity window in which user can change his password.
Like:
Old Password=
New Password=
Retype Password=
Now when the user tries to login for my application the password must be the new one...
so,please give some sample of it. how to achieve it.
Thanks in Advance--
There are various ways to do this.
One way is that you can pop-up a dialog, which contains three EditText for old password, new password and repeat new password.
Some tips:
Set android:password="true" to asterisk the input password
You can check the old password on the lose focus of the EditText

Android application

Whenever i login to application i need to enter the password.But next time when i enter the password it shows me complete password over the soft keyboard of android.I need to clear this
data from android memory.
If you don't want the password hint to be shown try adding the following to your EditText attributes
android:inputType="textFilter|textMultiLine|textNoSuggestions"

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