大家好,我是android编程的新手。我正在尝试通过数组适配器填充 ListView。运行后错误是:不幸的是应用程序已停止。我不知道出了什么问题。我尝试在没有 setAdapter 的情况下运行代码,它工作正常。这是我的代码
布局文件:1.activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:orientation="vertical">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<EditText android:id="@+id/emp_name"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="@string/emp_name" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/button_search"
android:clickable="true"
android:onClick="search" />
</LinearLayout>
<ListView
android:id="@+id/emp_list"
android:layout_width="75dp"
android:layout_height="fill_parent" >
</ListView>
</LinearLayout>
2.emp_list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/emp_item"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
</TextView>
Main_activity.java
protected void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); String[] employees = {"Christophe Coenraets", "John Smith"}; ListAdapter adapter = new ArrayAdapter<String> (this,R.layout.activity_main,R.id.emp_item,employees); ListView employeeList = (ListView) findViewById(R.id.emp_list); employeeList.setAdapter(adapter); setContentView(R.layout.activity_main); }