默认情况下，Android打开菜单导航抽屉

Question

我想知道是否默认情况下可以打开“导航菜单”吗？

我的应用程序基于此菜单，因此如果默认情况下未打开导航菜单，则看来我的应用程序为空。

我的首选是XML。

感谢帮助！

Answer 1

// Delay is in milliseconds
static final int DRAWER_DELAY = 200;

@Override
protected void onCreate(Bundle savedInstanceState) {
    ...
    // Building NavDrawer logic here. Just a method call would be best.
    ...
    new Handler().postDelayed(openDrawerRunnable(), DRAWER_DELAY);
}

private Runnable openDrawerRunnable() {
    return new Runnable() {

        @Override
        public void run() {
            drawerLayout.openDrawer(Gravity.LEFT);
        }
    }
}