Develop Reference

Is there a way when displaying a dialog in Android to tell the app to show the pop up?

I have a full screen app that has buttons that want to have a custom drop down when they are clicked. I was thinking of having a custom dialog show up that will have the options. Is there a way to tell the dialog where to show up?

If you want to create a Dialog window you can change the position of the screen in which it will be displayed by doing something like this:
//Dialog reference
Dialog dialog;
//Instantiate here your dialog
dialog = ... ;
//Get window layout parameters reference
Window window = dialog.getWindow();
WindowManager.LayoutParams windowLayoutParams = window.getAttributes();
//Set the parameters you want
windowLayoutParams.gravity = Gravity.CENTER; //e.g. dialog's will be centered
window.setAttributes(windowLayoutParams);
You can instead use Gravity.BOTTOM or Gravity.TOP to display the dialog accordingly. Alternatively, for more specific positioning you can try setting attributes "windowLayoutParams.x" & "windowLayoutParams.y".

Android CustomDialog minWidth

I have a CustomDialog (extending Dialog) which is currently set to wrap_content for both width and heigh. Problem is if I set the main text as something really short (say "hello") the dialog gets very small in width. I would like the dialog to always take all the space available, but still have the default margin from the edges of the screen.
I already tried various methods:
setting:
android:layout_width="match_parent"
on the dialog layout, doesn't have any effect.
doing:
int width = (int)(getContext().getResources().getDisplayMetrics().widthPixels*0.90);
getWindow().setLayout(width, LinearLayout.LayoutParams.WRAP_CONTENT);
causes the dialog to go at the start of the screen and doesn't change anything regarding the width
Window window = getWindow();
WindowManager.LayoutParams params = window.getAttributes();
params.horizontalMargin = 10;
params.width = LinearLayout.LayoutParams.MATCH_PARENT;
window.setAttributes(params);
makes the dialog take the whole screen but without any horizonthal margin
putting
<item name="windowMinWidthMajor">100%</item>
<item name="windowMinWidthMinor">65%</item>
in the dialog style has no effect.
how do I accomplish that? Mind that the dialog is used all around the app, so putting any code outside of the dialog class itself is not an option.

Fix orientation of screen on Dialog view

I am using a custom dialog in my activity. I want to set the screen orientation only if the dialog is shown elsewhere the screen orientation can change to portrait to landscape vice versa. Is there any way to fix the orientation for such particular case specifically in java code.

We had to do this in a fullscreen dialog launched from a service.
final WindowManager.LayoutParams params = new WindowManager.LayoutParams(WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
params.copyFrom(window.getAttributes());
params.width = WindowManager.LayoutParams.MATCH_PARENT;
params.height = WindowManager.LayoutParams.MATCH_PARENT;
params.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
window.setAttributes(params);

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
//Show dialog here
//...
//Hide dialog here
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);

use android:configChanges="orientation" then Android doesn't re-create the activity when the orientation is changed. If you don't want the dialog to be dismissed, just use the Activity.showDialog() method. And if you still want to use android:configChanges="orientation" then you have to change drawables manually in the Activity.onConfigurationChanged() method.

Android: Display custom dialog in center of the container

How to display custom dialog as a center of the container?
Dialog customdialog = new Dialog(this,android.R.style.Theme_Translucent_NoTitleBar);
Window window = customdialog.getWindow();
window.setLayout(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
window.setGravity(Gravity.CENTER);
R.style.Theme_Translucent_NoTitleBar - is used to remove border for cutomdialog. Once i used this line the dialog will appear at the topleft corner of the tablet?
Can anyone help me to solve this issue?

Change the fill_parent to wrap_content.I hope this will be the issue the dialog appear at the corner of the activity.It takes the space of whole layout.So changing this may help you to get what you realy wanted.
Window window = customdialog.getWindow();
window.setLayout(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
window.setGravity(Gravity.CENTER);
Use above code after dialog.show() statement

I added this to the dialog's custom style and it worked fine.
<item name="android:layout_gravity">center</item>
My dialog's width and height are set to wrap_content. The style's parent is
parent="#android:style/Theme.Light"

I will go for this piece of code:
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
Window window = dialog.getWindow();
lp.copyFrom(window.getAttributes());
//This makes the dialog take up the full width
lp.width = WindowManager.LayoutParams.MATCH_PARENT;
lp.height = WindowManager.LayoutParams.MATCH_PARENT;
window.setAttributes(lp);
Where dialog, is the dialog object to be shown. Inside of the layout of the dialog you can define the view of the layout as you wish: centered or not.

I use this code and the problem solved
Window window = alertDialog.getWindow();
window.setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
window.setGravity(Gravity.CENTER);

Maximizing an AlertDialog?

I'd like to show a Dialog that occupies as much screen space as possible.
So, here's a sample:
AlertDialog dialog = new AlertDialog.Builder(ctx)......create();
Window w = dialog.getWindow();
WindowManager.LayoutParams lp = w.getAttributes();
lp.width = 320;
lp.height = 480;
w.setAttributes(lp);
Problem is, this doesn't change a thing. Why?
TIA.

I don't know how to do exactly what you're wanting, but isn't this mostly defeating the purpose of a Dialog? Why not just create a custom Activity and use the Dialog theme if you're just wanting it to look dialog-ey.

You need to change the window layout parameters AFTER setContentView. Anything you do to the window before then (size/location-wise) will be tossed out when you call setContentView.
http://devstream.stefanklumpp.com/2010/07/android-display-dialogs-in-fullscreen.html

You need to add minWidth and minHeight attributes in the Dialog's xml layout file. E.g. your screen size is 800 * 480, then set android:minWidth="800dip", android:minHeight="400dip"