如何在每个项目的微调器之间设置分隔符？

Question

我正在寻找一些解决方案并尝试完成它.分频器仍然没有显示出来.

我在styles.xml中为我的主题设置了样式:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Others theme here. -->
    <item name="android:dropDownListViewStyle">@style/mySpinnerStyle</item>
</style>

这是mySpinnerStyle

<style name="mySpinnerStyle" parent="android:Widget.ListView.DropDown">
    <item name="android:divider">#00ff00</item>
    <item name="android:dividerHeight">1dp</item>
</style>

这是我的微调器的片段代码:

Spinner chooseDate = (Spinner) view.findViewById(R.id.chooseDate);

String[] date_group = dateList.toArray(new String[dateList.size()]);
            ArrayAdapter<String> itemDate = new ArrayAdapter<String>(getActivity(), R.layout.spinner, date_group);
            itemDate.setDropDownViewResource(R.layout.spinner);
            chooseDate.setAdapter(itemDate);

这是我的微调器布局xml:

<Spinner
            android:theme="@style/mySpinnerStyle"
            android:spinnerMode="dialog"
            android:layout_gravity="center"
            android:layout_marginLeft="8dp"
            android:layout_marginRight="16dp"
            android:id="@+id/chooseDate"
            android:layout_width="match_parent"
            android:layout_height="38dp"
            android:background="@drawable/spinner_arrow" />

然后R.layout.spinner xml是这样的:

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/text1"
    android:textSize="22dp"
    android:theme="@style/mySpinnerStyle"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ellipsize="marquee"
    android:gravity="center"
    android:paddingRight="40dp"
    android:singleLine="true" />

我点击我的微调器显示对话框,最后没有分隔符...

我为我的微调器设置了样式,但我不能显示分隔符.我不知道为什么？

任何帮助,将不胜感激 .谢谢你的支持.

清单使用我的AppTheme:

<application
    android:allowBackup="true"
    android:icon="@drawable/app_icon_512x512"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme"
    android:name="android.support.multidex.MultiDexApplication">

Answer 1

这可能对你有帮助，

活动主文件

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp"
    tools:context=".MainActivity"
    android:background="#effbe4"
    >
    <Spinner
        android:id="@+id/spinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
</RelativeLayout>

spinner_item.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="10dp"
    android:background="@drawable/spinner_item_border"
    />

spinner_item_border.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#ff2632"/>
        </shape>
    </item>
    <item android:bottom="2dp">
        <shape android:shape="rectangle">
            <solid android:color="#d7ffa2"/>
        </shape>
    </item>
</layer-list>

活动中

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Get reference of widgets from XML layout
    Spinner spinner = (Spinner) findViewById(R.id.spinner);

    // Initializing a String Array
    String[] plants = new String[]{
            "Black birch",
            "Bolean birch",
            "Canoe birch",
            "Cherry birch",
            "European weeping birch"
    };

    // Initializing an ArrayAdapter
    ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(
            this,R.layout.spinner_item,plants
    );
    spinnerArrayAdapter.setDropDownViewResource(R.layout.spinner_item);
    spinner.setAdapter(spinnerArrayAdapter);
   }
}

Answer 2

展会分隔成旋项目需要设置两个属性为线性布局1. 除法器和分频器显示检查下面的代码.

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="?android:attr/listDivider"
android:showDividers="end"
android:orientation="vertical">
<TextView
    android:id="@+id/textview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginBottom="@dimen/dp5"
    android:textColor="#6F6F6F"

    android:textAllCaps="false"
    android:layout_marginStart="@dimen/dp5"
    android:layout_marginLeft="@dimen/dp5" />


</LinearLayout>