【六】ListView

acitvity_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:ignore="MissingDefaultResource">
    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/listviewId">
    </ListView>
</RelativeLayout>

MainActivity

public class MainActivity extends AppCompatActivity {
    //数据源
    private  static final String[] commonFunList = new String[]{
            "ListView1",
            "ListView2",
            "ListView3",
            "ListView4",
            "ListView5"
    };
    private ListView listView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        // 初始化
        listView = (ListView)findViewById(R.id.listviewId);
        //setAdapter：布局
        listView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, commonFunList));
        //setOnItemClickListener：监听点击了哪一条list
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                Dialog alertDiaLog = new AlertDialog.Builder(MainActivity.this).
                        setMessage("您点击了第" + i + "个item").create();
                alertDiaLog.show();
            }
        });
    }
}