android studio开发教程 ListActivity的2种使用方法：系统默认布局和自己定义布局

看了视频和百度的资料，自己摸索了下。

第一种：系统默认布局

public class MainActivity extends ListActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        String[] names = {"name1","name2","name3"};        ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,names);        setListAdapter(adapter);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.menu_main, menu);        return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        //noinspection SimplifiableIfStatement        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}

 
 第二种：使用自定义布局

public class MainActivity extends ListActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);                //与上一个演示唯一的区别在这里，你可以设置自己想要的布局        setContentView(R.layout.activity_main);                String[] names = {"name1","name2","name3"};        ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,names);        setListAdapter(adapter);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.menu_main, menu);        return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        //noinspection SimplifiableIfStatement        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}

自己演示了看看吧

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