How to simulate a button click using code

Question

How can I trigger a button click event using code in Android  I want to trigger the button click programmatically when some other event occurs   Same Problem I am Facing   public void onDateSelectedButtonClick View v         Something  Alarm Management      http   www java2s com Code Android Core-Class Alarmdemo htm     copied code from this site       Button code    lt Button     android onClick  onDateSelectedButtonClick      android text  Set notification for this date    gt    But I want to call that function OnLoadLayout without OnClickEvent

User · Answer

Just to clarify what moonlightcheese stated  To trigger a button click event through code in Android provide the following   buttonName performClick

User · Answer

you can do it this way  private Button btn  btn    Button findViewById R id button2   btn performClick

User · Answer

Starting with API15  you can use also callOnClick   that directly call attached view OnClickListener  Unlike performClick    this only calls the listener  and does not do any associated clicking actions like reporting an accessibility event

User · Answer

there is a better way   View performClick      http   developer android com reference android view View html performClick    this should answer all your problems   every View inherits this function  including Button  Spinner  etc   Just to clarify  View does not have a static performClick   method  You must call performClick   on an instance of View  For example  you can t just call   View performClick      Instead  do something like   View myView   findViewById R id myview   myView performClick

User · Answer

Android s callOnClick    added in API 15  can sometimes be a better choice in my experience than performClick    If a user has selection sounds enabled  then performClick   could cause the user to hear two continuous selection sounds that are somewhat layered on top of each other which can be jarring   One selection sound for the user s first button click  and then another for the other button s OnClickListener that you re calling via code

User · Answer

If you do not use the sender argument  why not refactor the button handler implementation to separate function  and call it from wherever you want  from the button handler and from the other place     Anyway  it is a better and cleaner design - a code that needs to be called on button handler AND from some other places deserves to be refactored to own function  Plus it will help you separate UI handling from application logic code  You will also have a nice name to the function   not just onDateSelectedButtonClick

User · Answer

Just write this simple line of code  -  button performClick      where button is the reference variable of Button class and defined as follows -  private Button buttonToday   buttonToday    Button  findViewById R id buttonToday     That s it

[android] How to simulate a button click using code?

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