我正在尝试根据 channel 中未读消息的数量设置 TextView 的颜色。像这样:
android:textColor="@{channel.unreadCount > 0 ? @color/selector_conversation_row_title_unread : @color/selector_conversation_row_title_read}"
这只设置了标题的颜色,同时:
android:textColor="@color/selector_conversation_row_title_unread"
此代码将 textColor 设置为选择器,如果我按下 TextView,颜色会发生变化,这与第一条语句不同。
selector_conversation_row_title_unread:
<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:state_pressed="false" android:color="@color/colorConversationTitleUnread"/>
<item android:state_focused="true" android:state_pressed="true" android:color="#ffffff"/>
<item android:state_focused="false" android:state_pressed="true" android:color="#ffffff"/>
<item android:color="@color/colorConversationTitleUnread"/>
</selector>
selector_conversation_row_title_read:
<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:state_pressed="false" android:color="@color/colorConversationTitle"/>
<item android:state_focused="true" android:state_pressed="true" android:color="#ffffff"/>
<item android:state_focused="false" android:state_pressed="true" android:color="#ffffff"/>
<item android:color="@color/colorConversationTitle"/>
</selector>
为什么选择器只能用作?:
android:textColor="@color/selector_conversation_row_title_unread"
最佳答案
Android 数据绑定(bind)不知道资源类型,因此您必须在表达式中提供它:
android:textColor="@{channel.unreadCount > 0 ? @colorStateList/selector_conversation_row_title_unread : @colorStateList/selector_conversation_row_title_read}"
关于android - TextView textColor 中的数据绑定(bind)选择器,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39472503/