更改AlertDialog.Builder按钮颜色

Question

我试图改变AlertDialog.Builder的按钮颜色,但我没有找到一种方法来做到这一点.

我希望将按钮的颜色和标题更改为白色,就像在HOLO主题中一样.

请参阅以下2个屏幕截图作为示例:

我看过这里:

如何更改AlertDialog的主题

更改AlertDialog的样式

如何更改自定义警报对话框的背景

应用Android样式

所有这些都不适合我.

这是我的代码:

public void logInDialog()
{
    ContextThemeWrapper ctw = new ContextThemeWrapper( this,  R.style.dialogStyle);
    AlertDialog.Builder builder = new AlertDialog.Builder(ctw);
    builder.setTitle("Log in");
    View prefView = View.inflate(this, R.layout.log_in, null);  
    //The rest of the code.........
}

这是我的样式代码:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="dialogStyle" parent="android:Theme.Dialog">
        <item name="android:background">@color/white</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:button">@color/white</item>
    </style>    
</resources>

Answer 1

我知道这是一个非常古老的问题,但我遇到了同样的问题,我找到了解决方案.要更改"警报"对话框按钮内文本的颜色,您应该执行以下操作:

public void logInDialog()
{
    AlertDialog.Builder builder = new AlertDialog.Builder(context);
    LayoutInflater inflater = context.getLayoutInflater();

    //setting custom view for our dialog
    View myview = inflater.inflate(R.layout.YOUR_CUSTOM_LAYOUT, null);
    builder.setNeutralButton(android.R.string.cancel, null);
    builder.setView(myview);

    //creating an alert dialog from our builder.
    AlertDialog dialog = builder.create();
    dialog.show();

    //retrieving the button view in order to handle it.
    Button neutral_button = dialog.getButton(DialogInterface.BUTTON_NEUTRAL);

    Button positive_button = dialog.getButton(DialogInterface.BUTTON_POSITIVE);


    if (neutral_button != null) {
        neutral_button.setBackgroundDrawable(context.getResources()
                        .getDrawable(R.drawable.custom_background));

        neutral_button.setTextColor(context.getResources()
                        .getColor(android.R.color.white));
    }
    if (positive_button != null) {
        positive_button.setBackgroundDrawable(context.getResources()
                        .getDrawable(R.drawable.custom_background));

        positive_button.setTextColor(context.getResources()
                        .getColor(android.R.color.white));
    }

}

使用按钮的xmls:

custom_background.xml

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item android:drawable="#000000"/>
    <item android:drawable="@drawable/selectable_item_background"/>

</layer-list>

和selectable_item_background.xml:

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

    <item android:drawable="@drawable/item_pressed" android:state_pressed="true"/>
    <item android:drawable="@drawable/item_focused" android:state_focused="true"/>
    <item android:drawable="@drawable/item_focused" android:state_selected="true"/>
    <item android:drawable="@android:color/transparent"/>

</selector>

我个人在Fragment中使用了这个代码,这就是为什么我有一个LayoutInflater.在您的情况下,您可以跳过此步骤.希望它能在未来帮助其他人.