更改“ DialogPreference”的突出显示颜色（按钮颜色）

您需要做的只是subclass DialogPreference，然后调用Resource.getIdentifier以查找View想要主题的每个对象，就像您在做的一样，但是您无需调用Window.getDecorView。这是一个例子：

风俗 DialogPreference

public class CustomDialogPreference extends DialogPreference {

    public CustomDialogPreference(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public CustomDialogPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void showDialog(Bundle state) {
        super.showDialog(state);
        final Resources res = getContext().getResources();
        final Window window = getDialog().getWindow();
        final int green = res.getColor(android.R.color.holo_green_dark);

        // Title
        final int titleId = res.getIdentifier("alertTitle", "id", "android");
        final View title = window.findViewById(titleId);
        if (title != null) {
            ((TextView) title).setTextColor(green);
        }

        // Title divider
        final int titleDividerId = res.getIdentifier("titleDivider", "id", "android");
        final View titleDivider = window.findViewById(titleDividerId);
        if (titleDivider != null) {
            titleDivider.setBackgroundColor(green);
        }

        // Button views
        window.findViewById(res.getIdentifier("button1", "id", "android"))
                .setBackgroundDrawable(res.getDrawable(R.drawable.your_selector));
        window.findViewById(res.getIdentifier("button2", "id", "android"))
                .setBackgroundDrawable(res.getDrawable(R.drawable.your_selector));
        window.findViewById(res.getIdentifier("button3", "id", "android"))
                .setBackgroundDrawable(res.getDrawable(R.drawable.your_selector));

    }

}

XML首选项

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >

    <path_to.CustomDialogPreference
        android:dialogMessage="Message"
        android:negativeButtonText="Cancel"
        android:positiveButtonText="Okay"
        android:title="Title" />

</PreferenceScreen>

自定义选择器

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true">

    <item android:drawable="@drawable/your_pressed_drawable" android:state_pressed="true"/>
    <item android:drawable="@drawable/your_default_drawable"/>

</selector>

备用选择器

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true">

    <item android:drawable="@color/your_pressed_color" android:state_pressed="true"/>
    <item android:drawable="@color/your_default_color/>

</selector>

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