Skip to main content

Alert Dialog Box



A dialog is a small window that prompts the user to make a decision or enter additional information. A dialog does not fill the screen and is normally used for modal events that require users to take an action before they can proceed.A dialog that can show a title, up to three buttons, a list of selectable items, or a custom layout.
Building an Alert Dialog
The AlertDialog class allows you to build a variety of dialog designs and is often the only dialog class you’ll need.
There are three regions of an alert dialog:
Title: This is optional and should be used only when the content area is occupied by a detailed message, a list, or custom layout. If you need to state a simple message or question you don’t need a title.
Content area:This can display a message, a list, or other custom layout.
Action buttons:There should be no more than three action buttons in a dialog.
The AlertDialog.Builder class provides APIs that allow you to create an AlertDialog with these kinds of content, including a custom layout.

Adding buttons
To add action buttons  call the setPositiveButton() and setNegativeButton() methods.
The set…Button() methods require a title for the button (supplied by a string resource) and a DialogInterface.OnClickListener that defines the action to take when the user presses the button.

There are three different action buttons you can add:
Positive:-You should use this to accept and continue with the action (the “OK” action).
Negative:-You should use this to cancel the action.
Neutral:-You should use this when the user may not want to proceed with the action, but doesn’t necessarily want to cancel. It appears between the positive and negative buttons. For example, the action might be “Remind me later.”

Comments

Post a Comment

Popular posts from this blog

Variables

Variables The main way to store information in the middle of a PHP program is by using a variable. Here are the most important things to know about variables in PHP. All variables in PHP are denoted with a leading dollar sign ($). The value of a variable is the value of its most recent assignment. Variables are assigned with the = operator, with the variable on the left-hand side and the expression to be evaluated on the right. Variables can, but do not need, to be declared before assignment. Variables in PHP do not have intrinsic types - a variable does not know in advance whether it will be used to store a number or a string of characters. Variables used before they are assigned have default values. PHP does a good job of automatically converting types from one to another when necessary. PHP variables are Perl-like. PHP has a total of eight data types which we use to construct our variables − Integers  − are whole numbers, without a decima...
Post a Comment
Read more

SQL Server - INTERSECT Operator

Description The SQL Server (Transact-SQL) INTERSECT operator is used to return the records that are in common between two SELECT statements or data sets. If a record exists in one query and not in the other, it will be omitted from the INTERSECT results. It is the intersection of the two SELECT statements. Intersect Query Explanation:  The INTERSECT query will return the records in the blue shaded area. These are the records that exist in both Dataset1 and Dataset2. Each SELECT statement within the SQL Server INTERSECT must have the same number of columns in the result sets with similar data types. Syntax The syntax for the NTERSECT operator in SQL Server (Transact-SQL) is: SELECT expression1, expression2, ... expression_n FROM tables [WHERE conditions] INTERSECT SELECT expression1, expression2, ... expression_n FROM tables [WHERE conditions]; Parameters or Arguments expressions The columns or calculations that you wish to compare between the two SELECT ...
Post a Comment
Read more

About Application

The product is supposed to be an open source application, developed under the PRSC(Punjab Remote Sensing Centre)organization, for the usage of PUDA(Punjab Urban Planning and Development Authority ). It is An android based system implementing client-server model. The Po portal System provides simple mechanism for the Planning officer to share  truly verified report. The following are the main features that are included in the application are: Common platform support: Offers operating support for most of the known and commercial operating systems i.e. android operating system. Number of users being supported by the system: Though the number is precisely not mentioned but the system is able to support a large number of online users at a time. Search: search for the pending list of the cases assigned is generally by logging in to the application. Id system: provides each officer with a unique Id which is sent at the time of report submission. Verification  section: Verif...
Post a Comment
Read more