How to control the width and height of the default Alert Dialog in Android

Question

AlertDialog Builder builder   new AlertDialog Builder this           builder setTitle  Title            builder setItems items  new DialogInterface OnClickListener                 public void onClick DialogInterface dialog  int item                    Toast makeText getApplicationContext    items item   Toast LENGTH SHORT  show                                      AlertDialog alert   builder create      I am using the above code to display an Alert Dialog  By default  it fills the screen in width and wrap content in height  How can I control the width and height of default alert dialog   I tried   alert getWindow   setLayout 100 100      It didn t work    How to get the layout params on the alert window and manually set the width and height

User · Answer

For those who will find this thread like me, here is IMO better solution (note the 70% which sets min width of the dialog in percent of screen width):

<style name="my_dialog" parent="Theme.AppCompat.Dialog.Alert">
    <item name="windowMinWidthMajor">70%</item>
    <item name="windowMinWidthMinor">70%</item>
</style>

And then apply this style to dialog:

AlertDialog.Builder builder = new AlertDialog.Builder(context, R.style.my_dialog);

User · Answer

I think tir38 s answer is the cleanest solution  Have in mind that if you are using android app AlerDialog and holo themes your style should look like this    lt style name  WrapEverythingDialog  parent  holo theme ex  android Theme Holo Dialog  gt       lt item name  windowMinWidthMajor  gt 0dp lt  item gt       lt item name  windowMinWidthMinor  gt 0dp lt  item gt   lt  style gt    And if using support v7 app AlertDialog or androidx appcompat app AlertDialog with AppCompat theme your style should look like this    lt style name  WrapEverythingDialog  parent  Appcompat theme ex  Theme AppCompat Light Dialog Alert  gt       lt item name  android windowMinWidthMajor  gt 0dp lt  item gt       lt item name  android windowMinWidthMinor  gt 0dp lt  item gt   lt  style gt

User · Answer

Ok   I can control the width and height using Builder class  I used   AlertDialog Builder builder   new AlertDialog Builder this   builder setView layout   builder setTitle  Title    AlertDialog alertDialog   builder create    alertDialog getWindow   setLayout 600  400     Controlling width and height  alertDialog show

User · Answer

I dont know whether you can change the default height width of AlertDialog but if you wanted to do this  I think you can do it by creating your own custom dialog  You just have to give android theme   android style Theme Dialog   in the android manifest xml for your activity and can write the whole layout as per your requirement  you can set the height and width of your custom dialog from the Android Resource XML

User · Answer

Before trying to adjust the size post-layout  first check what style your dialog is using  Make sure that nothing in the style tree sets   lt item name  windowMinWidthMajor  gt     lt  item gt   lt item name  windowMinWidthMinor  gt     lt  item gt    If that s happening  it s just as simple as supplying your own style to the  builder constructor that takes in a themeResId  http   developer android com reference android app AlertDialog Builder html AlertDialog Builder android content Context  int   available API 11    lt style name  WrapEverythingDialog  parent  whatever you were previously using  gt       lt item name  windowMinWidthMajor  gt 0dp lt  item gt       lt item name  windowMinWidthMinor  gt 0dp lt  item gt   lt  style gt

User · Answer

Appreciate answered by Sid because its dynamic but I want to add something   What if you want to change width only  height will be as it is   I have done like following          All process of AlertDialog     AlertDialog alert   builder create        alert show            Creating Dynamic     Rect displayRectangle   new Rect         Window window   getActivity   getWindow        window getDecorView   getWindowVisibleDisplayFrame displayRectangle       alert getWindow   setLayout  int   displayRectangle width                 0 8f   alert getWindow   getAttributes   height     Here I used alert getWindow   getAttributes   height to keep height as it is of AlertDialog and Width will be changed as per screen resolution   Hope it will helps  Thanks

User · Answer

Only a slight change in Sat Code  set the layout after show   method of AlertDialog   AlertDialog Builder builder   new AlertDialog Builder this   builder setView layout   builder setTitle  Title    alertDialog   builder create    alertDialog show    alertDialog getWindow   setLayout 600  400     Controlling width and height    Or you can do it in my way   alertDialog show    WindowManager LayoutParams lp   new WindowManager LayoutParams     lp copyFrom alertDialog getWindow   getAttributes     lp width   150  lp height   500  lp x -170  lp y 100  alertDialog getWindow   setAttributes lp

User · Answer

longButton setOnClickListener     show       1 n2 n3 n4 n5 n6 n7 n8 n9 n0 n           1 n2 n3 n4 n5 n6 n7 n8 n9 n0 n           1 n2 n3 n4 n5 n6 n7 n8 n9 n0 n           1 n2 n3 n4 n5 n6 n7 n8 n9 n0 n           1 n2 n3 n4 n5 n6 n7 n8 n9 n0 n           1 n2 n3 n4 n5 n6 n7 n8 n9 n0 n           1234567890-12345678901234567890123456789012345678901234567890         shortButton setOnClickListener     show       1234567890 n           1234567890-12345678901234567890123456789012345678901234567890            private fun show msg  String      val builder   AlertDialog Builder this  apply       setPositiveButton android R string ok  null      setNegativeButton android R string cancel  null         val dialog   builder create   apply       setMessage msg        dialog show      dialog window  decorView  addOnLayoutChangeListener   v                         - gt      val displayRectangle   Rect       val window   dialog window     v getWindowVisibleDisplayFrame displayRectangle      val maxHeight   displayRectangle height     0 6f    60       if  v height  gt  maxHeight          window  setLayout window attributes width  maxHeight toInt

User · Answer

This works as well by adding  getWindow   setLayout width  height  after show    alertDialogBuilder              setMessage  Click yes to exit                 setCancelable false               setPositiveButton  Yes  new DialogInterface OnClickListener                     public void onClick DialogInterface dialog int id                           if this button is clicked  close                        current activity                     MainActivity this finish                                                    setNegativeButton  No  new DialogInterface OnClickListener                     public void onClick DialogInterface dialog int id                           if this button is clicked  just close                        the dialog box and do nothing                     dialog cancel                                     show   getWindow   setLayout 600 500

User · Answer

If you wanna add dynamic width and height based on your device frame  you can do these calculations and assign the height and width    AlertDialog Builder builderSingle   new   AlertDialog Builder getActivity      builderSingle setTitle  Title      final AlertDialog alertDialog   builderSingle create     alertDialog show      Rect displayRectangle   new Rect     Window window   getActivity   getWindow      window getDecorView   getWindowVisibleDisplayFrame displayRectangle     alertDialog getWindow   setLayout  int  displayRectangle width       0 8f    int  displayRectangle height     0 8f      P S   Show the dialog first and then try to modify the window s layout attributes

[android] How to control the width and height of the default Alert Dialog in Android?

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