ArrayAdapter简单适配器用法Android

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public class MainActivity extends Activity {    private ListView listViewMain;    String[] totalList = null;//new String[]{"文本1","文本2","文本3","文本4","文本5"};    @Override    protected void onCreate(Bundle savedInstanceState) {         totalList = getResources().getStringArray(R.array.userName);                super.onCreate(savedInstanceState);        ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.select_dialog_item, totalList);        setContentView(R.layout.activity_main);        listViewMain = (ListView) findViewById(R.id.listView_Main);                listViewMain.setAdapter(adapter);    }}

 xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >        android:id="@+id/listView_Main"        android:layout_width="match_parent"        android:layout_height="wrap_content" >

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