更改文本颜色的ListView项目 [英] Change text color for ListView items
问题描述
我如何改变文字颜色为添加到的ListView
的项目。我需要在一定条件下,改变不同的行,以不同的文本颜色(例如,行0 =红色,ROW1 =白色,ROW3 =蓝色等)编程以改变在code中的颜色。设置文本颜色,在XML布局不会满足我的要求。这是我的code:
@覆盖
公共无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.listview);
setListAdapter(新ArrayAdapter<字符串>(ListViewEx.this,
R.layout.list_item_1,Global.availableDecks));
//这样的事情
//listview.getPosition(0).setTextColor(red);
//listview.getPosition(1).setTextColor(white);
//listview.getPosition(2).setTextColor(blue);
和我的XML:
< XML版本=1.0编码=UTF-8&GT?;
< TextView中的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + /标记
机器人:layout_width =match_parent
机器人:layout_height =35dp
机器人:textAppearance =机器人:ATTR / textAppearanceLarge
机器人:TEXTSIZE =30像素
机器人:layout_marginLeft =5像素
机器人:单线=真
/>
实现自己的ArrayAdapter,并覆盖 getView()
方法:
公共类适配器1扩展ArrayAdapter<字符串> {
公共适配器1(上下文的背景下,INT渣油,ArrayList的<字符串>项目){
超(背景下,渣油,项目);
}
@覆盖
公共查看getView(INT位置,查看convertView,ViewGroup中父){
视图V = super.getView(位置,convertView,父母);
如果(位置== 1){
((TextView中)V).setTextColor(Color.GREEN);
}
返回伏;
}
}
不要忘了提供一个替代其他
条款的颜色设置为默认,这样你就不会有问题,当你在处理一个循环一行。
然后,在你的活动:
setListAdapter(新适配器1(ListViewEx.this,
R.layout.list_item_1,Global.availableDecks));
How do I change the text color for the items that are added to a ListView
. I need to change the colors programmatically in code based on certain conditions and changing different rows to different text colors(e.g. row 0 = red, row1= white, row3= blue etc). Setting a text color in the xml layout will not meet my requirements. Here is my code:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
setListAdapter(new ArrayAdapter<String>(ListViewEx.this,
R.layout.list_item_1, Global.availableDecks));
//something like this
//listview.getPosition(0).setTextColor(red);
//listview.getPosition(1).setTextColor(white);
//listview.getPosition(2).setTextColor(blue);
and my xml:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/label"
android:layout_width="match_parent"
android:layout_height="35dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="30px"
android:layout_marginLeft="5px"
android:singleLine="true"
/>
Implement your own ArrayAdapter and override the getView()
method:
public class Adapter1 extends ArrayAdapter<String> {
public Adapter1(Context context, int resID, ArrayList<String> items) {
super(context, resID, items);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = super.getView(position, convertView, parent);
if (position == 1) {
((TextView) v).setTextColor(Color.GREEN);
}
return v;
}
}
Don't forget to provide an alternative else
clause to set the color to the default so you don't have problems when you're dealing with a recycled row.
Then in your activity:
setListAdapter(new Adapter1(ListViewEx.this,
R.layout.list_item_1, Global.availableDecks));
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