我有很多警报对话框在我的应用程序。这是一个默认的布局,但我添加了积极和消极的按钮对话框。所以按钮得到Android 5的默认文本颜色(绿色)。我试图改变它,但没有成功。知道怎么改变文字的颜色吗?

自定义对话框:

public class MyCustomDialog extends AlertDialog.Builder {

    public MyCustomDialog(Context context,String title,String message) {
        super(context);

        LayoutInflater inflater = (LayoutInflater) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE );
        View viewDialog = inflater.inflate(R.layout.dialog_simple, null, false);

        TextView titleTextView = (TextView)viewDialog.findViewById(R.id.title);
        titleTextView.setText(title);
        TextView messageTextView = (TextView)viewDialog.findViewById(R.id.message);
        messageTextView.setText(message);

        this.setCancelable(false);

        this.setView(viewDialog);

    } }

创建对话框:

MyCustomDialog builder = new MyCustomDialog(getActivity(), "Try Again", errorMessage);
builder.setNegativeButton("OK", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            ...
                        }
}).show();

那个negativeButton是一个默认的对话框按钮,并采用Android 5 Lollipop的默认绿色。

非常感谢


您可以先尝试创建AlertDialog对象,然后使用它进行设置以更改按钮的颜色,然后显示按钮。注意,在构建器对象上,我们调用create()来获取AlertDialog对象,而不是调用show():

//1. create a dialog object 'dialog'
MyCustomDialog builder = new MyCustomDialog(getActivity(), "Try Again", errorMessage); 
AlertDialog dialog = builder.setNegativeButton("OK", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    ...
                }

            }).create();

//2. now setup to change color of the button
dialog.setOnShowListener( new OnShowListener() {
    @Override
    public void onShow(DialogInterface arg0) {
        dialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(COLOR_I_WANT);
    }
});

dialog.show()

你必须在onShow()上这样做的原因,不能在你创建对话框后得到那个按钮,因为这个按钮还没有被创建。

我改变了AlertDialog。BUTTON_POSITIVE到AlertDialog。BUTTON_NEGATIVE反映你的问题的变化。虽然“OK”键是否定键有点奇怪。通常是正面按钮。


最简单的解决方案是:

dialog.show(); //Only after .show() was called
dialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(neededColor);
dialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(neededColor);

按钮和其他文本的颜色也可以通过主题来改变:

values-21 / styles.xml

<style name="AppTheme" parent="...">
  ...
  <item name="android:timePickerDialogTheme">@style/AlertDialogCustom</item>
  <item name="android:datePickerDialogTheme">@style/AlertDialogCustom</item>
  <item name="android:alertDialogTheme">@style/AlertDialogCustom</item>
</style>

<style name="AlertDialogCustom" parent="android:Theme.Material.Light.Dialog.Alert">
  <item name="android:colorPrimary">#00397F</item>
  <item name="android:colorAccent">#0AAEEF</item>
</style>

结果:


<style name="AlertDialogCustom" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="android:colorPrimary">#00397F</item>
    <item name="android:textColorPrimary">#22397F</item>
    <item name="android:colorAccent">#00397F</item>
    <item name="colorPrimaryDark">#22397F</item>
</style>

按钮和其他文本的颜色也可以使用appcompat更改:


如果你想改变按钮的文本颜色(正面,负面,中性),只需添加到您的自定义对话框样式:

<item name="colorAccent">@color/accent_color</item>

所以,你的对话框样式必须是这样的:

<style name="AlertDialog" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="android:textColor">@android:color/black</item>
    <item name="colorAccent">@color/topeka_accent</item>
</style>

顺便说一句:

按钮的颜色(和整个样式)也取决于当前的主题,当你使用它们的时候可能会有很大的不同

android.app.AlertDialog.Builder builder = new AlertDialog.Builder()

or

android.support.v7.app.AlertDialog.Builder builder = new AlertDialog.Builder()

(用第二个更好)


下面是一种使用样式的自然方法:

如果你的AppTheme继承自Theme。MaterialComponents,那么:

<style name="AlertDialogTheme" parent="ThemeOverlay.MaterialComponents.Dialog.Alert">
    <item name="buttonBarNegativeButtonStyle">@style/NegativeButtonStyle</item>
    <item name="buttonBarPositiveButtonStyle">@style/PositiveButtonStyle</item>
</style>

<style name="NegativeButtonStyle" parent="Widget.MaterialComponents.Button.TextButton.Dialog">
    <item name="android:textColor">#f00</item>
</style>

<style name="PositiveButtonStyle" parent="Widget.MaterialComponents.Button.TextButton.Dialog">
    <item name="android:textColor">#00f</item>
</style>

如果你的AppTheme继承自Theme。AppCompat:

<style name="AlertDialogTheme" parent="ThemeOverlay.AppCompat.Dialog.Alert">
    <item name="buttonBarNegativeButtonStyle">@style/NegativeButtonStyle</item>
    <item name="buttonBarPositiveButtonStyle">@style/PositiveButtonStyle</item>
</style>

<style name="NegativeButtonStyle" parent="Widget.AppCompat.Button.ButtonBar.AlertDialog">
    <item name="android:textColor">#f00</item>
</style>

<style name="PositiveButtonStyle" parent="Widget.AppCompat.Button.ButtonBar.AlertDialog">
    <item name="android:textColor">#00f</item>
</style>

使用你的AlertDialogTheme在你的AppTheme

<item name="alertDialogTheme">@style/AlertDialogTheme</item>

或者在构造函数中

androidx.appcompat.app.AlertDialog.Builder(context, R.style.AlertDialogTheme)

或者如果你正在使用MaterialAlertDialogBuilder,那么使用

<item name="materialAlertDialogTheme">@style/AlertDialogTheme</item>

对我来说就不同了,我使用的是按钮主题

<style name="ButtonLight_pink" parent="android:Widget.Button">
    <item name="android:background">@drawable/light_pink_btn_default_holo_light</item>
    <item name="android:minHeight">48dip</item>
    <item name="android:minWidth">64dip</item>
    <item name="android:textColor">@color/tab_background_light_pink</item>
</style>

因为android:textColor是白色的,我没有看到任何按钮文本(对话框按钮基本上也是按钮)。 好了,改了,改了。


有两种方法可以更改对话框按钮的颜色。

基本的方法

如果你只是想改变一个活动,在alertDialog.show()后面写下面两行;

alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(getResources().getColor(R.color.colorPrimary));
alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(getResources().getColor(R.color.colorPrimaryDark));

推荐

我建议在styles.xml中为AlertDialog添加一个主题,这样就不必在每个活动/对话调用中一次又一次地编写相同的代码。您只需创建一个样式,并在对话框上应用该主题。所以当你想要改变AlertDialog框的颜色时,只要在styles.xml中改变颜色,所有的对话框都会在整个应用程序中更新。

<style name="AlertDialogTheme" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="colorAccent">@color/colorPrimary</item>
</style>

并在AlertDialog中应用主题。构建器

AlertDialog.Builder builder = new AlertDialog.Builder(this, R.style.AlertDialogTheme);

In your app's theme/style, add the following lines: <item name="android:buttonBarNegativeButtonStyle">@style/NegativeButtonStyle</item> <item name="android:buttonBarPositiveButtonStyle">@style/PositiveButtonStyle</item> <item name="android:buttonBarNeutralButtonStyle">@style/NeutralButtonStyle</item> Then add the following styles: <style name="NegativeButtonStyle" parent="Widget.MaterialComponents.Button.TextButton.Dialog"> <item name="android:textColor">@color/red</item> </style> <style name="PositiveButtonStyle" parent="Widget.MaterialComponents.Button.TextButton.Dialog"> <item name="android:textColor">@color/red</item> </style> <style name="NeutralButtonStyle" parent="Widget.MaterialComponents.Button.TextButton.Dialog"> <item name="android:textColor">#00f</item> </style>

使用此方法无需在AlertDialog构建器中设置主题。


你可以这样做:简单的方法

// Initializing a new alert dialog
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(R.string.message);
builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        doAction();
    }
});
builder.setNegativeButton(R.string.cancel, null);

// Create the alert dialog and change Buttons colour
AlertDialog dialog = builder.create();
dialog.setOnShowListener(new DialogInterface.OnShowListener() {
    @Override
    public void onShow(DialogInterface arg0) {
        dialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(getResources().getColor(R.color.red));
        dialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(getResources().getColor(R.color.blue));
        //dialog.getButton(AlertDialog.BUTTON_NEUTRAL).setTextColor(getResources().getColor(R.color.black));
    }
});
dialog.show();

Kotlin 2020:非常简单的方法

在dialog.show()之后使用:

dialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(ContextCompat.getColor(requireContext(), R.color.yourColor))

使用styles.xml (value)

非常简单的解决方案,改变colorPrimary作为您的选择,它将改变按钮文本的警告框的颜色。

<style name="MyAlertDialogStyle" parent="android:Theme.Material.Dialog.Alert">


        <!-- Used for the buttons -->
        <item name="colorAccent">@android:color/white</item>
        <!-- Used for the title and text -->
        <item name="android:textColorPrimary">@color/black</item>

        <!-- Used for the background -->
        <item name="android:background">#ffffff</item>
        <item name="android:colorPrimary">@color/white</item>
        <item name="android:colorAccent">@color/white</item>
        <item name="android:windowEnterAnimation">@anim/bottom_left_enter</item>
    </style>

替代方案(使用Java)

 @SuppressLint("ResourceAsColor")
            public boolean onJsAlert(WebView view, String url, String message, final JsResult result) {

                AlertDialog dialog = new AlertDialog.Builder(view.getContext(), R.style.MyAlertDialogStyle)

                        .setTitle("Royal Frolics")
                        .setIcon(R.mipmap.ic_launcher)
                        .setMessage(message)
                        .setPositiveButton("OK", (dialog1, which) -> {
                            //do nothing
                            result.confirm();
                        }).create();

                Objects.requireNonNull(dialog.getWindow()).getAttributes().windowAnimations = R.style.MyAlertDialogStyle;
                dialog.show();
                
                dialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(R.color.white);
                return true;

            }

我们可以创建扩展函数,并在Dialog .show()之后调用扩展函数来定制警报对话框按钮的颜色。

fun AlertDialog.makeButtonTextBlue() {
this.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(ContextCompat.getColor(context, R.color.blue))
this.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(ContextCompat.getColor(context, R.color.blue))
}

用法:

dialog.show()
dialog.makeButtonTextBlue()

快速简单的方法: 更改res/values/colors.xml中的colorAccent颜色,颜色以十六进制表示,例如#010613为黑色。 拜拜


这是一个自定义主题,以改变AlertDialog按钮的textColor。 它在我的设备上工作-三星ga70 -安卓11

<style name="AlertDialogCustom" parent="Theme.AppCompat.Light.Dialog.Alert">
    <!--Support for other devices, I think so-->
        <item name="android:textColor">@color/yourcolor</item>
        <item name="colorButtonNormal">@color/yourcolor</item>
        <item name="colorAccent">@color/yourcolor</item>
    <!--only this code works on my device-->
        <item name="buttonBarButtonStyle">@style/MyButtonStyle</item>
    </style>

    <!--only this code works on my device-->
    <style name="MyButtonStyle" parent="Widget.AppCompat.Button.Borderless">
        <item name="android:textColor">@color/yourcolor</item>
    </style>

在学习的同时又看了很多造型。要知道的一件重要的事情是,代码比样式更高级。按键的样式并不适用,所以我感谢Ramakrishna Joshi在这篇文章中的回答。我在其中添加了白天和夜晚的主题:

private fun AlertDialog.dlgTextColor() {
    val currentNightMode = (resources.configuration.uiMode
            and Configuration.UI_MODE_NIGHT_MASK)
    when (currentNightMode) {
        Configuration.UI_MODE_NIGHT_YES -> {
            this.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(ContextCompat.getColor(context, R.color.yellow_accent))
            this.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(ContextCompat.getColor(context, R.color.yellow_accent))
        }
        Configuration.UI_MODE_NIGHT_NO -> {
            this.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(ContextCompat.getColor(context, R.color.blue_accent))
            this.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(ContextCompat.getColor(context, R.color.blue_accent))
        }
    }
}

对它的调用是:

.dlgTextColor()

在对话构建器中,对该方法的调用确实跟在.show之后。


以下是@trungdinhtrong接受的答案的Kotlin版本:

val alert = builder.create()
if (button1Text == "Delete") {
    alert.setOnShowListener { dialog ->
        alert.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(Color.RED);
    }
}

BTW, it seems like Android's idea of "positive" and "negative" buttons isn't compatible with the idea of "safe" and "destructive" buttons. In a dialog with Cancel and Delete buttons, I think Android would consider Delete the positive button because it performs an action, but I would consider it a destructive button because it leads to data loss. So instead of using the styles file to set positive and negative button colors, I'm using this code to make the Delete button red even though it's the "positive" button.