android - 更改 "DialogPreference"的突出显示颜色(按钮颜色)

Question

我完全按照 http://www.lukehorvat.com/blog/android-seekbardialogpreference 中解释的方式实现了 DialogPreference

此外，我能够更改 DialogPreference 的文本和分隔线颜色，但我无法更改按钮在按下时的突出显示颜色。有人知道怎么做吗？

更新:

我为 DialogPreference 使用以下布局:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:orientation="vertical">
<TextView
        android:id="@+id/text_dialog_message"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dip"
        android:paddingLeft="12dip"
        android:paddingRight="12dip"/>
<TextView
        android:id="@+id/text_progress"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dip"
        android:gravity="center_horizontal"/>
<SeekBar
        android:id="@+id/seek_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="6dip"
        android:layout_marginTop="6dip"/>
</LinearLayout>

关于此 DialogPreference 或我目前更改的布局的唯一样式属性是通过编程更改的:

        int alertTitleId = this.getContext().getResources().getIdentifier("alertTitle", "id", "android");
        TextView alertTitle = (TextView) getDialog().getWindow().getDecorView().findViewById(alertTitleId);
        alertTitle.setTextColor(color); // change title text color

        int titleDividerId = this.getContext().getResources().getIdentifier("titleDivider", "id", "android");
        View titleDivider = getDialog().getWindow().getDecorView().findViewById(titleDividerId);
        titleDivider.setBackgroundColor(color); // change divider color

Answer 1

您需要做的就是子类化 DialogPreference，然后调用 Resource.getIdentifier 来定位您想要设置主题的每个 View，就像您一样正在做，但您不需要调用 Window.getDecorView。这是一个例子:

自定义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>

截图