Android - 更改ListView特定项目的背景颜色

Question

我正在制作一个游戏，它将使用Listview来将某些文本显示为聊天。

其中一些文字代表事件，所以我想根据该特定事件更改背景颜色： EX。有人就会被杀死，那是特定Listview项目将具有红色背景颜色

如何实现这一目标？

这是我的Java代码：

  //STARTING SETUP 
     ArrayList<String> arrayListMother; 
     ArrayAdapter<String> arrayAdapterMother; 
     ListView listViewMother; 

     int counter; 
     boolean introDone = false; 

     String[] night = {"Welcome!","This is Lupus In Tabula!","You're gonna experience the Hasbro Game in a total new way, have fun!"}; 
     String[] day = {"Thank you!","Great","Let's do it!"}; 
     String[] dead = {"Thank you!","Great","Let's do it!"}; 
     String[] saved = {"Thank you!","Great","Let's do it!"}; 

     Button buttonGo; 
     //ENDING SETUP 


     //CREATE - CREATE// 
     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.activity_game); 
      setup(); 

     } 
     //CREATE - CREATE// 


    public void setup(){ 

    arrayListMother = new ArrayList<String>(); 
    arrayAdapterMother = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arrayListMother); 
    listViewMother = (ListView) findViewById(R.id.list_mother); 
    listViewMother.setAdapter(arrayAdapterMother); 
    buttonGo = (Button)findViewById(R.id.buttonGo); 
} 

这是我的XML代码：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical"> 

<ListView 
    android:id="@+id/list_mother" 
    android:text="@string/go" 
    android:layout_width="match_parent" 
    android:layout_height="0dp" 
    android:textAppearance="?attr/textAppearanceListItem" 
    android:divider="@null" 
    android:layout_weight="7"/> 

<Button 
    android:id="@+id/buttonGo" 
    android:layout_width="match_parent" 
    android:layout_height="0dp" 
    android:layout_weight="1" 
    android:text="@string/go" 
    android:textColor="@color/white" 
    android:background="@color/colorPrimary" 
    android:enabled="true" 
    android:onClick="play" /> 
</LinearLayout> 

Answer 1

覆盖getView为ArrayAdapter。基于条件变化的颜色或做需要什么。您已经提供了参数ArrayAdapter构造函数。因此没有必要再次夸大观点。获取相同的内容并执行所需的操作。类似地，getItem(position)将数据存放在specidifed的位置。

http://developer.android.com/reference/android/widget/ArrayAdapter.html#getItem(int)

listViewMother.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arrayListMother) { 
@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    View row = super.getView(position, convertView, parent); 

    if(getItem(position).equals("Somebody gets killed")) 
    { 
     // do something change color 
     row.setBackgroundColor (Color.RED); // some color 
    } 
    else 
    { 
     // default state 
     row.setBackgroundColor (Color.WHITE); // default coloe 
    } 
    return row; 
    } 
}); 

Answer 2

使用此代码：

listViewMother.getChildAt(position).setBackgroundColor(
      Color.parseColor("#00743D")); 

Answer 3

在您的适配器类，你有约束力的观点，你可以检查特定的条件，并设置颜色以下way.This方式，你可以设置文本或背景的颜色动态。希望这可以帮助。 我在这里使用回收浏览器，它在骑在onBindViewHolder上。你的适配器应该有绑定视图的方法。

@Override 
public void onBindViewHolder(ViewHolder holder, int position) { 
    Person person = personList.get(position); 

    holder.username.setText(person.getName()); 
    holder.arriveTime.setText(DateFormat.format("hh:mm a",(person.getArriveTime() * 1000))); 


    if(person.getName().equals("NoVisitor")) 
    { 
     holder.username.setTextColor(Color.GRAY); 
     holder.arriveTime.setTextColor(Color.GRAY); 
     holder.leaveTime.setTextColor(Color.GRAY); 
    } 
    else 
    { 
     holder.username.setTextColor(Color.BLACK); 
     holder.arriveTime.setTextColor(Color.BLACK); 
     holder.leaveTime.setTextColor(Color.BLACK); 
    } 
}