Change background colour of android dialog

Question

I have a Dialog that is constructed with AlertDialog.Builder, and I would like to change the backgroud color of the dialog.

I've been reading in Internet that it's possible to do using ContextThemeWrapper (working with API 10), but it doesn't work.

What I'm doing is:

ContextThemeWrapper wrapper = new ContextThemeWrapper(this, R.style.MyDialogTheme);
AlertDialog alertDialog = new AlertDialog.Builder(wrapper)).create();  

<style name="MyDialogTheme" parent="@android:style/Theme.Dialog">
    <item name="android:background">#FFFFFF</item>
</style>

Why does this not work?

Thanks in advance!

Is the dialog actually shown or not? You never call alertDialog.show() — RaphMclee
– RaphMclee, Commented Oct 18, 2013 at 8:28

JJD · Accepted Answer · 2015-10-13 18:46:10Z

The alertDialog xml file, is here:

https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/layout/alert_dialog_micro.xml

Just change their values:

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    builder.setTitle(_title);
    builder.setMessage(_message);
    //....
    AlertDialog dialog = builder.show();

    int objeto = getResources().getIdentifier("buttonPanel","id","android");
    View vistaObjeto=dialog.findViewById(objeto);
    if (vistaObjeto!=null){
        vistaObjeto.setBackgroundColor(Color.RED);
    }
    objeto = getResources().getIdentifier("topPanel", "id", "android");
    vistaObjeto = dialog.findViewById(objeto);
    if (vistaObjeto != null){
        vistaObjeto.setBackgroundColor(Color.YELLOW);
    }
    objeto = getResources().getIdentifier("alertTitle","id","android");
    vistaObjeto=dialog.findViewById(objeto);
    if (vistaObjeto!=null){
        ((TextView)vistaObjeto).setTextColor(Color.BLACK);
    }
    objeto = getResources().getIdentifier("titleDivider","id","android");
    vistaObjeto=dialog.findViewById(objeto);
    if (vistaObjeto!=null){
        vistaObjeto.setBackgroundColor(Color.GREEN);
    }
    objeto = getResources().getIdentifier("contentPanel","id","android");
    vistaObjeto=dialog.findViewById(objeto);
    if (vistaObjeto!=null){
        vistaObjeto.setBackgroundColor(Color.BLUE);
    }
    objeto = getResources().getIdentifier("buttonPanel","id","android");
    vistaObjeto=dialog.findViewById(objeto);
    if (vistaObjeto!=null){
        vistaObjeto.setBackgroundColor(Color.MAGENTA);
    }
    objeto = getResources().getIdentifier("parentPanel","id","android");
    vistaObjeto=dialog.findViewById(objeto);
    if (vistaObjeto!=null){
        vistaObjeto.setBackgroundColor(Color.CYAN);
    }
    return dialog;
}

Good find. Link is now outdated, however; currently, the following link works: android.googlesource.com/platform/frameworks/base/+/master/core/…

Community · Accepted Answer · 2017-05-23 10:28:44Z

0

Use the following code for a customized dialog box:

protected Dialog onCreateDialog(int dialogId) {
    LayoutInflater inflater = 
        (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    final AlertDialog.Builder builder = new AlertDialog.Builder(this);
    final View viewMessEdit = inflater.inflate(
        R.layout.example,
        (ViewGroup) findViewById(R.id.dialog_mess_edit_root));
    builder.setView(viewMessEdit);
    viewMessEdit.setBackgroundResource(R.color.pink_dark);
}

And follow this link:

How to change dialog background color programmatically?

edited May 23, 2017 at 10:28

CommunityBot

11 silver badge

answered Oct 19, 2012 at 11:35

gowri

6819 silver badges27 bronze badges

Comments

Alexiscanny · Accepted Answer · 2016-08-04 10:05:22Z

0

I've modified my AlertDialog with AlertDialog.THEME_DEVICE_DEFAULT_LIGHT and so I wrote my builder like:

AlertDialog.Builder dialog = new AlertDialog.Builder(ApplicationCertificatesListFragment.this.getActivity(), AlertDialog.THEME_DEVICE_DEFAULT_LIGHT);

answered Aug 4, 2016 at 10:05

Alexiscanny

5897 silver badges15 bronze badges

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