单击更改ListView的文本颜色

Question

我有一个自定义ListView列表的每一行由一个ImageView和两个组成TextView.我想在单击列表项目时将文本的颜色更改为白色(仅在单击的项目中).此外,当项目"未被点击"时(当"按下"被释放时),我想将颜色更改为黑色.单击以下内容时,我已经使项目的背景颜色发生了变化list_item_bg.xml:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item 
    android:state_selected="false"
    android:state_pressed="false" 
    android:drawable="@color/white" />

<item android:state_pressed="true" 
    android:drawable="@color/red_destaques" />

<item android:state_selected="true"
    android:drawable="@color/red_destaques" />
</selector>

而且listitem_row.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    android:id="@+id/relativeLayout1"
    android:layout_width="fill_parent"
    android:layout_height="50dip"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:padding="5dip"
    android:maxHeight="50dip"
    android:adjustViewBounds="true"
    android:background="@color/list_item_bg">

    <ImageView
        android:layout_width="70dip"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:adjustViewBounds="true"
        android:scaleType="fitStart" 
        android:src="@drawable/imagem_padrao_lista" 
        android:id="@+id/listItemLogo">
    </ImageView>

    <TextView
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:layout_height="wrap_content"
        android:text="TextView"
        android:layout_width="wrap_content"
        android:layout_toRightOf="@+id/listItemLogo"
        android:layout_toLeftOf="@+id/listItemArrow"
        android:textColor="#000000"
        android:layout_marginLeft="5dip"
        android:adjustViewBounds="true" 
        android:id="@+id/listItemTitle">
    </TextView>

    <TextView
        android:layout_height="wrap_content"
        android:text="TextView"
        android:layout_width="wrap_content"
        android:layout_toRightOf="@+id/listItemLogo"
        android:layout_below="@+id/listItemTitle"
        android:textColor="#333333"
        android:layout_marginLeft="5dip"
        android:adjustViewBounds="true" 
        android:id="@+id/listItemDescription">
    </TextView>
    <ImageView android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_alignParentRight="true" android:src="@drawable/setinha_navegacao" android:layout_centerVertical="true" android:id="@+id/listItemArrow"></ImageView>

</RelativeLayout>

我的文本改变它的颜色完全与背景改变的方式相同,如上面的xmls所示.如果可能,我宁愿通过代码进行此更改...

Answer 1

像以前一样创建一个新的StateListDrawable,但是按下默认颜色为黑色,白色为白色.

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true" android:color="@color/black" />
<item android:state_focused="true" android:color="@color/black" />
<item android:state_pressed="true" android:color="@color/black" />
<item android:color="@color/white" />
</selector>

现在在TextView中将文本颜色更改为新的drawable:

android:textColor="@color/list_item_text"

有关StateListDrawables的更多信息:http://developer.android.com/guide/topics/resources/drawable-resource.html#StateList