Question

我正在尝试使用ArrayAdapter在ListView中显示数组项。它没有在ListView中显示任何项目，也没有显示任何错误，下面是我的java类和xml。

package church.llagc.com;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;


public class listView extends AppCompatActivity {

    ArrayAdapter<String> adapter;

    String[] alphabitlist = {"A","Aa","I","EE","U","Uu","E","EI","O","Oo","Ka","Ga","Cha","Ja","Tha","Da","Na","Pa","Ba",
            "Bha","Ma","Ya","Ra","La","Va","Ssa","Sha","Sa","Ha"};

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

        adapter= new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,alphabitlist);
        ListView alpabits = (ListView) findViewById(R.id.alphabitorder);
        alpabits.setAdapter(adapter);
    }
}

containt_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="church.llagc.com.MainActivity"
    tools:showIn="@layout/app_bar_main">

   <include layout="@layout/activity_list_view"/>

</android.support.constraint.ConstraintLayout>

和我的activity_list_view.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    tools:context="church.llagc.com.listView">

    <ListView
        android:background="@drawable/alphabit_bg"
        android:id="@+id/alphabitorder"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="2"
        android:scrollbars="none"/>

     <ListView
         android:id="@+id/itemcontent"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_weight="8"/>

    </LinearLayout>

如果您有任何疑问，请发表评论。

Answer 1

试试这个。

   <ListView
    android:background="@drawable/alphabit_bg"
    android:id="@+id/alphabitorder"
    android:layout_width="0dp"
    android:layout_height="match_parent"
    android:layout_weight="2"
    android:scrollbars="none"/>

 <ListView
     android:id="@+id/itemcontent"
     android:layout_width="0dp"
     android:layout_height="match_parent"
     android:layout_weight="8"/>

    </LinearLayout>

Answer 2

不要使用android.R.layout.simple_list_item_1并创建自己的布局文件。这个android.R.layout.simple_list_item_1布局文件有一个简单的text view，但文字颜色与白色有关，这就是你无法看到它的原因。现在，您必须创建一个仅包含text view并设置text color的新布局文件，并将其传递给您的适配器

ListView未显示任何项

2 个答案: