I did log in form in android, How to add the event functionality for this login form, Now login form display, I want to add the java code, That is When user enter his username and password, Get the value into variable and page redirect and system should show , you have enter this username and password ..chk the scrren shot..
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I'm doing Major Project on my final year and I'm very new to Android plus I;m not good at codings. I need help with my login page.
I've created something like a database connection java file which is this:
CODE:.......
I've already created a database for users using SQLite. The database name is Users and the table is called User. The records inside the table are Username, Password, LastName, FirstName. I've inserted one user's info into the database. The problem is I do not know whether my UserDB.java is correct.
And I've also created login.java. Hardcoded Login page:
CODE:.........
So I want to know how I should apply the database connection on the login.java. Should I insert database connection something like db.Open();? I studied ASP.Net a few months back and I kind of forget most of what I've learnt. So how should I open the database connection on login.java and how to check with database whether the user enters the right username and password?
I'd like to use AlertDialog as a Login or pin code or password dialog. Here is my code -
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("Login"); alert.setMessage("Enter Pin :");
// Set an EditText view to get user input final EditText input = new EditText(this);
alert.setView(input);
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
String value = input.getText().toString();
Log.d( TAG, "Pin Value : " + value); return;
} } );
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub return;
} } );
alert.show();
How to code that all input text will appear like ' * ' - asterisk. I can't get my pin code value although it shows into asterisk. my code is below
private void accessPinCode_2() {
LayoutInflater factory = LayoutInflater.from(this);
final View textEntryView = factory.inflate(R.layout.dialog_login, null);
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("Login"); alert.setMessage("Enter Pin :");
alert.setView(textEntryView);
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
//String value = input.getText().toString();
EditText mUserText;
mUserText = (EditText) textEntryView.findViewById(R.id.txt_password);
String strPinCode = mUserText.getText().toString();
Log.d( TAG, "Pin Value : " + strPinCode); return;
} } );
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub return;
} } ); alert.show(); } } dialog_login.xml
<?xml version="1.0" encoding="utf-8"?><EditText xmlns:android="http://schemas.android.com/apk/res/android"
id="@+id/txt_password"
android:password="true"
android:layout_height="wrap_content"
android:layout_width="250px"
android:layout_centerHorizontal="true"
android:layout_below="@+id/password_text"
android:singleLine="true" />
I entered the value, but get null! How to solve? Debugging is stopped at this statement. When I pointed above mUserText null value being shown in popup.
String strPinCode = mUserText.getText().toString();
I use Android 1.6. Does it depend on Version?
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how to i call it on the below event? Code...
Is any way to build and fire an event (e.g. on click event) in android applications programmatically.
I have an Activity (lets call it A) with multiple views (5 ImageView for example). And a normal Java class (lets call it B) which is used by my Activity. here is an instance of B in my Activity. If user click on a View (Image View) the view OnClickListener calls a method in B In B, if operation is successful, it will call back a method in activity again. in activity method, It will change image or state for clicked ImageView.
I the other hand: click on view (x) in Activity -------> B.doSomething() --------> A.bIsDone() -----> change image for view (x) with normal execution, its working and there is no problem. the problem is that I want to simulate this process to be automatic, my code looks like this:
CODE:.............
The issue is that, it won't render anything, until the end of the loop.
I tried to put the loop in another Thread, but its throwing exception: android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
What can i do for this issue? i was think generate an click event on view (by code), to see it can help or not.
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Looking at the eclipse log it gives just a bit more information:
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I am running: ....
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Below is how I did it. I believe an sql statement should be inserted there am I right? And I know I missed out something. Before I match the username and password, I should check whether the user exist in the database first, and then check whether the password match with the username.
So in conclusion I need help on the 'if else' statement.
CODE:.........................
I've downloaded a few networking apps (games) that have you log in, then take you to a "home" type screen where you can change your settings, or start a new game, or view your buddies etc.My question is two-part:
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Why I have this error? It' s the same java code than the following url:...........
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