Develop Reference

Android Dialog with standard width like AlertDialog

I'm trying to create a Custom Dialog, setting my layout in order to customize it, but keeping the standard width.
In THIS picture we see a basic Dialog(AlertDialog), which has a defined width. On phones it has the full width minus some pixel, on tablet it has a defined width taht can be seen HERE.
The problem by using a custom layout is that the width shrinks to a wrap content of the layout like in THIS picture.
How can i do in order to have a custom dialog, which uses my layout but behavies on size as a standard dialog?

It appears that after you set the content view for the dialog, you have to call:
dialog.getWindow().setLayout(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
And the dialog will have the same width as an AlertDialog.

It seems like you used LinearLayout for dialog. Try to set your root layout as RelativeLayout. It will solve your problem.
Check this example in details.

Custom Layout for Dialog across different versions?

I have a Dialog with a custom layout (very simple). I set it up using the code below:
public static Dialog createGPSDialog(final Activity activity, boolean isLocationEnabled) {
final Dialog dialog = new Dialog(activity, R.style.Theme_Sherlock_Light_Dialog);
LinearLayout contentView = (LinearLayout) activity.getLayoutInflater().inflate(R.layout.dialog_twobutton, null);
dialog.setContentView(contentView);
return dialog;
}
There's some code I omitted, but it isn't relevant. Anyway, this is how it looks in gingerbread:
and this is how it looks on jellybean (probably ics as well):
The title area for the dialog is kept on JB, even after setting ContentView. Is there a workaround for this?

If you want to be completely custom and get rid of the title bar, try adding this line to your code:
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

The key is defining a theme for your dialog. The constructor for Dialog takes a theme resources id. Just use one of android's android.R.theme.xxx.
When using the AlertDialog.Builder you can define a new theme using the contextthemewrapper.
http://developer.android.com/reference/android/view/ContextThemeWrapper.html

Changing contents of an EditText widget in AlertDialog without onPrepareDialog()

I'm using an AlertDialog with a custom view that contains an EditText widget. I want to change the contents of the EditText widget before the AlertDialog is shown. I know that this is usually done by overriding onPrepareDialog() and setting the text there. However, as far as I can see, this will not work in my specific case because I use AlertDialog.show() instead of Activity.showDialog().
So how should I do this with a dialog that is shown using AlertDialog.show()? One solution is to set the text after the dialog has been brought to the front, i.e.:
AlertDialog alertDialog = builder.create();
alertDialog.show();
EditText editText = (EditText) alertDialog.findViewById(R.id.text);
editText.setText("Foo bar");
However, I don't think that this is a nice solution because the dialog is first shown and then the text is set. I'd like to set the text before the dialog is actually shown.
Is there any way to achieve this? I cannot do it before alertDialog.show() because findViewById() returns null when called before alertDialog.show().
Thanks for any help!

AlertDialog alertDialog = builder.create();
alertDialog.show();
Since you have access to the AlertDialog.Builder object, simply change the layout before calling builder.create().
Addition
I have an EditText widget in my XML file which I inflate using builder.setView(inflater.inflate(R.layout.mydialog, null)). How do I change the text of this EditText widget without calling findViewById()?
Break that line into a series of commands. Specifically: inflate the XML, alter the layout, and pass it to setView().
View view = inflater.inflate(R.layout.mydialog, null);
EditText editText = (EditText) view.findViewById(R.id.text);
editText.setText("Foo bar");
builder.setView(view);

Dialog with custom theme centered programmatically?

I have a dialog with a custom theme:
final Dialog d = new Dialog(this,android.R.style.Theme_Translucent_NoTitleBar_Fullscreen);
This makes my dialog background transparent.
Now the problem is if I let the normal theme(style.dialog) it is centered in my screen but now it has no layout and is in the upper left corner of my screen. Is there a way to programmatically center the dialog?

I didn't actually find a programatic solution to my problem, instead in my customdialog.xml I put the main layout into a RelativeLayout with fill_parent for height/width and then put the layout atribute centerInParent="true".

construct your dialog by extends Dialog,
override the style & content(by setContentView)

Custom Alert dialog not centered vertically on Android

I made a custom alert dialog box to be displayed at the end of my game so that the player can enter its name to save it. The problem is when I call show() on the dialog appears but it's not vertically centered! It's a bit lower than it should and no matter what properties I set in the xml or when using setGravity().
I think this is the same problem as the one mentioned here, but no one gave a proper answer.
Thanks for your help.
For more details, here is my code:
AlertDialog.Builder builder;
LayoutInflater inflater = (LayoutInflater)this.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.newrecord,(ViewGroup)findViewById(R.layout.shoot));
builder = new AlertDialog.Builder(this);
builder.setView(layout);
newRecDialog = builder.create();
And here is the code of the first element of the XML layout of newrecord.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:gravity="center"
android:padding="10dp"
android:baselineAligned="true">
Here is the output screenshot:
(source: free.fr)

The bug is described here. The AlertDialog is reserving space for the title/icon panel even where there is neither a title nor an icon.
The fix is, I think, quite simple: it should set the top panel layout to GONE, just as it does for the button panel in the event of there being no buttons. Until that's done, the only workaround is to implement your own Dialog subclass.

If you implement your own dialog the line requestWindowFeature(Window.FEATURE_NO_TITLE) hides the title panel and the dialog is centered on the screen. Maybe it works with a AlertDialog too.

You can use an Activity instead of a custom alert for this. You have to set the theme of activity as dialog in the android manifest file:
android:theme="#android:style/Theme.Dialog"
And you can adjust the activity xml layout as per your need.

android:theme="#android:style/Theme.Dialog"

If you are dealing with any height and width attributes, you must make sure not to alter the height, since it will alter the position, here is a sample.
myProgressDialog.show();
float widthPecent = 0.60f;
//order matters
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
int displayWidth = displayMetrics.widthPixels;
//dont do any adjustments to the height. ************************** <<<<<<<<<<
WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
layoutParams.copyFrom(myProgressDialog.getWindow().getAttributes());
int dialogWindowWidth = (int) (displayWidth * widthPecent);
layoutParams.width = dialogWindowWidth;
//dont do any changes to the height. ************************** <<<<<<<<<<
myProgressDialog.getWindow().setAttributes(layoutParams);
layoutParams.height = dialogWindowHeight; //comment or remove this line.

set the attribute on your AlertDialog as android:gravity="center" or programmatically as setGravity(Gravity.CENTER). This Gravity is for your layout only not for the display of your mobile. if you use Custom Title its did not look like center vertical.

Not really an answer, but I was having a similar issue. It appears that it is centered, but it is assuming the AlerterDialog has a title set. In my case, I just set a title.

Can you try using AlertDialog.Builder.setCustomTitle(View); instead of setView? We use it because alert dialog looks a bit better than dialog with empty title.

you should use the following line in the xml
firstly remove that padding line from your xml and after that
android:layout_gravity="center"
after this your dialog will appear in center and if you are using the margin from left etc than remove that and also if you are using that
android:layout_width="fill_parent"
than change it with the
android:layout_width="wrap_content"
after that your dialog will be appear in the center.

Try:
newRecDialog.getWindow().getAttributes().gravity = Gravity.CENTER;

You need to disable the window title.
First create a custom style for your dialog (Make sure to use the parent theme that fits your needs):
<style name="CustomDialog" parent="#android:style/Theme.Dialog">
<item name="android:windowNoTitle">true</item>
</style>
Then apply your style to the dialog builder:
AlertDialog.Builder builder;
LayoutInflater inflater = (LayoutInflater)this.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.newrecord,(ViewGroup)findViewById(R.layout.shoot));
builder = new AlertDialog.Builder( new ContextThemeWrapper(this, R.style.CustomDialog));
builder.setView(layout);
newRecDialog = builder.create();