我是新手开发者,正在使用android-support v7集成导航抽屉控件,有一个问题想请教。当我启动应用程序时,主要布局是这样的:
<?xml version="1.0" encoding="utf-8"?>
<!-- The main content view -->
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<!-- The navigation drawer -->
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@android:color/white"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp" />
这是我的主要活动:
drawerList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Fragment fragment = null;
switch (position) {
case 0:
fragment = new Fragment1();
break;
case 1:
fragment = new Fragment2();
break;
case 2:
fragment = new Fragment3();
break;
case 3:
fragment = new Fragment4();
break;
}
FragmentManager fragmentManager =
getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.content_frame, fragment)
.commit();
drawerList.setItemChecked(position, true);
tituloSeccion = opcionesMenu[position];
getSupportActionBar().setTitle(tituloSeccion);
drawerLayout.closeDrawer(drawerList);
}
});
如何设置应用程序的默认片段,例如主布局?谢谢