如何在android 5中更改默认对话框按钮文本颜色

Question

我的应用程序中有很多警报对话框.这是默认布局,但我在对话框中添加正负按钮.因此按钮获得Android 5(绿色)的默认文本颜色.我试图改变它但没有成功.知道如何改变文字颜色吗？

My Custom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();

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

非常感谢

Answer 1

以下是使用样式执行此操作的自然方法:

<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>

AppTheme在您的中设置此属性Theme.MaterialComponents

<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>

或者通过构建器中的构造函数 AppTheme

Answer 2

您可以先尝试创建AlertDialog对象,然后使用它来设置更改按钮的颜色然后显示它.(注意,在builder对象而不是调用show()我们调用create()以获取AlertDialog对象:

//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()

您必须onShow()在创建对话框后执行此操作并且无法获得该按钮的原因是该按钮尚未创建.

我改变AlertDialog.BUTTON_POSITIVE到AlertDialog.BUTTON_NEGATIVE以反映你的问题的变化.虽然很奇怪"OK"按钮会是一个负面按钮.通常它是正面按钮.

Answer 3

按钮和其他文本的颜色也可以通过主题更改:

值-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:

Answer 4

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);

Answer 5

有两种方法可以更改对话框按钮颜色.

基本方式

如果您只想更改活动,请在后面写下以下两行 alertDialog.show();

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

推荐的

我建议为其添加一个主题AlertDialog,styles.xml这样您就不必在每个活动/对话框调用中反复编写相同的代码.您只需创建样式并在对话框中应用该主题即可.因此,每当您想要更改AlertDialog框的颜色时,只需更改styles.xml中的颜色,所有对话框都将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>

并将主题应用于 AlertDialog.Builder

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

Answer 6

1. 在您应用的主题/样式中，添加以下几行：

   <item name="android:buttonBarNegativeButtonStyle">@style/NegativeButtonStyle</item>
   <item name="android:buttonBarPositiveButtonStyle">@style/PositiveButtonStyle</item>
   <item name="android:buttonBarNeutralButtonStyle">@style/NeutralButtonStyle</item>
   

2. 然后添加以下样式：

   <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。

Answer 7

Kotlin 2020：非常简单的方法

使用后dialog.show()：

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

Answer 8

如果要更改按钮文本颜色(正面,负面,中性),只需添加到自定义对话框样式:

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

因此,您的对话框样式必须如下所示:

<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>

Answer 9

我们可以创建扩展函数并在dialog.show()之后调用扩展函数来自定义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()

Answer 10

<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>

使用appcompat也可以更改按钮和其他文本的颜色:

Answer 11

这是你的方法：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();

Answer 12

使用styles.xml（值）

非常简单的解决方案，更改 colorPrimary 作为您的选择，它将更改警报框按钮文本的颜色。

<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;

            }