How to use and style new AlertDialog from appCompat 22.1 and above

When creating the AlertDialog you can set a theme to use.

Example - Creating the Dialog

AlertDialog.Builder builder = new AlertDialog.Builder(this, R.style.MyAlertDialogStyle);builder.setTitle("AppCompatDialog");builder.setMessage("Lorem ipsum dolor...");builder.setPositiveButton("OK", null);builder.setNegativeButton("Cancel", null);builder.show();

styles.xml - Custom style

<style name="MyAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">    <!-- Used for the buttons -->    <item name="colorAccent">#FFC107</item>    <!-- Used for the title and text -->    <item name="android:textColorPrimary">#FFFFFF</item>    <!-- Used for the background -->    <item name="android:background">#4CAF50</item></style>

Result

Edit

In order to change the Appearance of the Title, you can do the following. First add a new style:

<style name="MyTitleTextStyle">    <item name="android:textColor">#FFEB3B</item>    <item name="android:textAppearance">@style/TextAppearance.AppCompat.Title</item></style>

afterwards simply reference this style in your MyAlertDialogStyle:

<style name="MyAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">    ...    <item name="android:windowTitleStyle">@style/MyTitleTextStyle</item></style>

This way you can define a different textColor for the message via android:textColorPrimary and a different for the title via the style.

To use a theme for all the application, and don't use the second parameter to style your Dialog

<style name="MyTheme" parent="Base.Theme.AppCompat.Light">    <item name="alertDialogTheme">@style/dialog</item>    <item name="colorAccent">@color/accent</item></style><style name="dialog" parent="Base.Theme.AppCompat.Light.Dialog.Alert">    <item name="colorAccent">@color/accent</item></style>

On my app using a color accent in theme don't show the alertDialog's buttons with the theme colorAccent I have to add a dialog style in the theme.

If you want to use the new android.support.v7.app.AlertDialog and have different colors for the buttons and also have a custom layout then have a look at my https://gist.github.com/JoachimR/6bfbc175d5c8116d411e

@NonNull@Overridepublic Dialog onCreateDialog(Bundle savedInstanceState) {    View v = inflater.inflate(R.layout.custom_layout, null);    initDialogUi(v);    final AlertDialog d = new AlertDialog.Builder(activity, R.style.AppCompatAlertDialogStyle)            .setTitle(getString(R.string.some_dialog_title))            .setCancelable(true)            .setPositiveButton(activity.getString(R.string.some_dialog_title_btn_positive),                    new DialogInterface.OnClickListener() {                        @Override                        public void onClick(DialogInterface dialog, int which) {                            doSomething();                            dismiss();                        }                    })            .setNegativeButton(activity.getString(R.string.some_dialog_title_btn_negative),                    new DialogInterface.OnClickListener() {                        @Override                        public void onClick(DialogInterface dialog, int which) {                            dismiss();                        }                    })            .setView(v)            .create();    // change color of positive button             d.setOnShowListener(new DialogInterface.OnShowListener() {        @Override        public void onShow(DialogInterface dialog) {            Button b = d.getButton(DialogInterface.BUTTON_POSITIVE);            b.setTextColor(getResources().getColor(R.color.colorPrimary));        }    });    return d;}