ListView的最简单使用

public class MainActivity extends AppCompatActivity {

    private ListView listView;
    private String[] data={"a","b","c","d","e"};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = findViewById(R.id.listview);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, data);
//第一个参数为上下文，第二个为listView子项的显示布局，这里传入android系统的内置布局，第三个参数为数据
        listView.setAdapter(adapter);

    }}