Android - change dialog title style of all dialogs

问题:

Is there a way I can change all the alert dialogs appearing in my Android application? I want to change the dialogs that are system generated as well (like the Edit Text dialog that opens up when you long tap on any EditText). I want to change the title font color and size of all the dialogs in my app.

Is there a way to do it?

I have tried setting android:alertDialogTheme in my theme. But it seems to be not working. Code following -

<style name="Theme.DLight" parent="android:Theme.Light.NoTitleBar">
    <item name="android:alertDialogTheme">@style/DialogStyle</item>
</style>

and

<style name="DialogStyle" parent="android:Theme" >    
    <item name="android:windowBackground">@drawable/background_holo_light</item>
    <item name="android:textColor">#014076</item>       
</style>

EDIT

I'm not invoking a dialog from my code. It's just the default dialog that appears when you long click on any EditText. Generally it contains the keyboard options like Select word, Select all, Input method etc.

回答1:

In you dialog theme, the attribute you need to modify windowTitleStyle. There, reference a style for your title and define a text appearance for this title. For example, to display your title red and bold:

<style name="DialogStyle" parent="android:Theme">    
    ...
    <item name="android:windowTitleStyle">@style/DialogWindowTitle_Custom</item>
</style>

<style name="DialogWindowTitle_Custom" parent="@style/DialogWindowTitle_Holo">
    <item name="android:maxLines">1</item>
    <item name="android:scrollHorizontally">true</item>
    <item name="android:textAppearance">@style/TextAppearance_DialogWindowTitle</item>
</style>

<style name="TextAppearance_DialogWindowTitle" parent="@android:style/TextAppearance.Holo.DialogWindowTitle">
    <item name="android:textColor">@android:color/holo_red_light</item>
    <item name="android:textStyle">bold</item>
</style>

If you want to style a little bit more your AlertDialog, I wrote a blog post detailing the steps.

回答2:

import android.app.ProgressDialog;
import android.content.Context;
import android.view.animation.Animation;

public class MyProgressDialog extends ProgressDialog {

    public MyProgressDialog(Context context) {
        super(context,R.style.NewDialog);

        // TODO Auto-generated constructor stub
    }

}

//RESOURCE STYLE FILE res->values->mydialog.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
   <style name="NewDialog" parent="@android:style/Theme.Dialog">

    <item name="android:windowFrame">@null</item>
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowIsFloating">true</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowTitleStyle">@null</item>
    <item name="android:colorBackground">#ffffff</item>
    <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
    <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item>
    <item name="android:backgroundDimEnabled">true</item>
    <item name="android:width">30dip</item>
    <item name="android:height">30dip</item>
     <item name="android:textColor">#FF0000</item>

</style>
</resources>

//AND USE THIS CODE ANYWHERE IN YOUR APPLICATION TO GET CUSTOM PROGRESS DIALOG

MyProgressDialog pd = new MyProgressDialog(YouActivity.this);
pd.setMessage("Loading. Please wait...");
pd.show();

Thanks :)