java - 如何从 NavDrawer 中的项目单击开始新 Activity

Question

我是新手。我只是想知道如何通过单击抽屉导航内的选项之一来启动新的(预定义的) Activity ？我刚刚完成了有关如何制作 NavDrawer 的教程。这是到目前为止我的主要 Activity (称为 IntroActivity)

IntroActivity.java:

public class IntroActivity extends Activity {

private String[] drawerListViewItems;
private ListView drawerListView;
private DrawerLayout drawerLayout;
private ActionBarDrawerToggle actionBarDrawerToggle;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_intro);

    //Retrieve List items from strings.xml
    drawerListViewItems = getResources().getStringArray(R.array.list_items);

    //Retrieve ListView defined in intro_activity.xml
    drawerListView = (ListView) findViewById(R.id.left_drawer);

    //Set the adapter for the list view
    drawerListView.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_listview_item, drawerListViewItems));

    //App Icon
    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

    actionBarDrawerToggle = new ActionBarDrawerToggle(
            this, /* Host Activity */
            drawerLayout, /* DrawerLayout object */
            R.drawable.ic_drawer, /* Image to replace "up" image*/
            R.string.drawer_open, /* Open drawer description*/
            R.string.drawer_close /* Close drawer description*/
            );

    //Set actionBarDrawerToggle as the DrawerListener
    drawerLayout.setDrawerListener(actionBarDrawerToggle);

    getActionBar().setDisplayHomeAsUpEnabled(true);

    //ADD SHADOW TO THE RIGHT EDGE OF DRAWER
    drawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);

    //Responding to clicks implementation:
    drawerListView.setOnItemClickListener(new DrawerItemClickListener());
}

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    //Sync the toggle state after onRestart... has occurred
    actionBarDrawerToggle.syncState();
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);

    actionBarDrawerToggle.onConfigurationChanged(newConfig);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.intro, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    //Call ActionBarDrawerToggle.onOptionsItemSelected(),
            //If it returns true, then it has handles the app icon touch event
            if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
                return true;
            }

            return super.onOptionsItemSelected(item);
}

private class DrawerItemClickListener implements ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView parent, View view, int position,
            long id) {
        //I WOULD LIKE TO REPLACE THE FOLLOWING CODE WITH SOMETHING 
        //THAT CAN START A NEW ACTIVITY
        /*Toast.makeText(IntroActivity.this, ((TextView)view).getText(), 
                Toast.LENGTH_LONG).show(); */

        drawerLayout.closeDrawer(drawerListView);
    }
}

}

如果您能提供帮助，谢谢。

Answer 1

使用这个

Intent intent = new Intent(IntroActivity.this, YourNewActivity.class);
            startActivity(intent);

其中 YourNewActivity 是您要启动的 Activity