Question

我正在使用自定义单选列表视图。我想以编程方式调用ItemOnClickListener。我在我的xml中使用android:listSelector="#47D149"属性。我看到了this post。 performItemClick函数正在运行，但不会更改列表项的背景。

我该怎么办？有什么建议。谢谢！

Answer 1

<强>样品

的ListView

<ListView
            android:id="@+id/navigation_menu_container"
            android:layout_width="240dp"
            android:layout_height="match_parent"
            android:layout_below="@id/rlBanner"
            android:layout_gravity="start"
            android:background="@color/nyc_black"
            android:choiceMode="singleChoice"
            android:divider="@color/border_black"
            android:dividerHeight="@dimen/divider_height"
            android:listSelector="@drawable/item_selector" >

可绘/ item_selector.xml

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

可绘/ item_normal.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle"
     >
    <solid 
        android:color="@color/black"
        />
</shape>

可绘/ item_pressed.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle"
     >
     <solid 
         android:color="@color/red"
         />
</shape>

尝试上面的示例。 :)告诉我它是否有效

Answer 2

也许您可以在适配器本身中处理它？</ p>

@Override
    public View getView(final int position, View convertView, final ViewGroup parent) {
        if (null == convertView) {
            LayoutInflater inflater = (LayoutInflater) _context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.list_item, parent, false);
        }

        if(this.getItem(position).isChecked()){
            convertView.setBackgroundResource(android.R.color.holo_blue_bright);
        }else{
            convertView.setBackgroundResource(android.R.color.white);
        }

        final View tempFinalView = convertView;
        tempFinalView.setOnClickListener(new View.OnClickListener() {
                                                              @Override
                                                              public void onClick(View v) {
                                                                  if (getItem(position).isChecked()) {
                                                                      getItem(position).setChecked(false);
                                                                      tempFinalView.setBackgroundResource(R.color.white);
                                                                  } else {
                                                                      getItem(position).setChecked(true);
                                                                      tempFinalView.setBackgroundResource(R.color.pressed);
                                                                  }
                                                              }
                                                          }
        );

   return convertView;
}

修改：如果您不想在项目中添加其他变量。您可以使用标记功能。

只需设置并获取标记。

private static int VIEW_TAG = 99;

@覆盖 public View getView（final int position，View convertView，final ViewGroup parent）{ if（null == convertView）{ LayoutInflater inflater =（LayoutInflater）_context.getSystemService（Activity.LAYOUT_INFLATER_SERVICE）; convertView = inflater.inflate（R.layout.list_item，parent，false）; }

if((Boolean)convertView.getTag(VIEW_TAG)){ convertView.setBackgroundResource(android.R.color.holo_blue_bright); }else{ convertView.setBackgroundResource(android.R.color.white); } final View tempFinalView = convertView; tempFinalView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (getItem(position).isChecked()) { convertView.setTag(VIEW_TAG,new Boolean(false)); tempFinalView.setBackgroundResource(R.color.white); } else { convertView.setTag(VIEW_TAG,new Boolean(true)); tempFinalView.setBackgroundResource(R.color.pressed); } } } );

return convertView; }

Answer 3

确定。我找到了解决方案。 :) @Shifar Shifz回答，不要使用

android:listSelector="@drawable/item_selector"

而不是将此drawable xml添加到row.xml布局中作为背景

android:background="@drawable/item_selector"

Android Custom Listview以编程方式单击项目

3 个答案: