Android - Custom AlertDialog Background Color

Question

So I see we can have alertdialogs with gray and white (when setinverse...) background colors.

To learn why I checked themes.xml of the sdk, checking it I was led to

Answer 1

so easy..

Dialog d=builder2.create();
...
d.show();
d.getWindow().setBackgroundDrawableResource(R.drawable.mydialog_shape);

Answer 2

I recall reading that not all Android Dialogs are created equally. Therefore, if you don't want to use the dialog that shipped with the device's Android version; You need to code a completely fresh dialog from the ground up.

Edit:

I think you need to override the onCreateDialog with a custom dialog builder class. Like I said, I've never done it. Remember, to keep with the Android MVC style, you need to define the dialog in XML as well. If I was going to do it; I would probably start with the XML layout, then code a custom dialog class using the same methods as a regular dialog builder class. Sorry to be so vague, I'm still learning Java and Android myself.

Answer 3

Instead of using AlertDialog, I ended up using a Dialog. To get a custom look:

1-Create the Dialog and remove the title area(Otherwise you'll get a blank gray area on top):

myDialog = new Dialog(this);
myDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

2-Design a layout in xml, and set as dialog's content:

myDialog.setContentView(R.layout.mydialog_layout);

3-If the layout is not a rounded rect, it will intersect with the rounded corners of the dialog box. So, design the layout as a rounded rect:

in mydialog_layout.xml:

android:background = "@layout/mydialog_shape"

mydialog_shape.xml:

<?xml version="1.0" encoding="UTF-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
     android:shape="rectangle" 
     > 
     <gradient android:startColor="#FF0E2E57" 
     android:endColor="#FF0E2E57" 
            android:angle="225" android:paddingLeft="20dip"/> 

    <corners android:bottomRightRadius="5dp" android:bottomLeftRadius="5dp" 
     android:topLeftRadius="5dp" android:topRightRadius="5dp" android:paddingLeft="20dip"/> 
</shape>

4-Add listeners to the buttons in your activity:

Button button = (Button)myDialog.findViewById(R.id.dialogcancelbutton);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    myDialog.cancel();
}});

That's about it.