Question

我正在尝试将DrawerLayout添加到我的应用中。这是我的布局：

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <ListView
            android:id="@+id/list"
            android:listSelector="@android:color/transparent"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>
    </FrameLayout>
    <ListView
        android:id="@+id/left_drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"/>
</android.support.v4.widget.DrawerLayout>

活动代码：

public class HomeActivity extends AppCompatActivity {

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

        setupNavigationDrawer();
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
    }

    private void setupNavigationDrawer() {

        DrawerLayout mDrawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(
                this,
                mDrawerLayout,
                R.string.hello_world,
                R.string.hello_world
        ) {
            public void onDrawerClosed(View view) {
                //Snackbar.make(view, R.string.drawer_close, Snackbar.LENGTH_SHORT).show();
            }

            public void onDrawerOpened(View drawerView) {
                //Snackbar.make(drawerView, R.string.drawer_open, Snackbar.LENGTH_SHORT).show();
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);
        mDrawerToggle.syncState();
    }
}

我可以从左侧滑动并查看我的抽屉菜单，但我看不到切换抽屉菜单的活动标题左侧的任何ActionBar按钮。如何在活动中添加“汉堡包”按钮？

Answer 1

    mDrawerToggle = new ActionBarDrawerToggle(this,Drawer,toolbar,R.string.openDrawer,R.string.closeDrawer){
                @Override
                public void onDrawerOpened(View drawerView) {
                    super.onDrawerOpened(drawerView);
                }
                @Override
                public void onDrawerClosed(View drawerView) {
                    super.onDrawerClosed(drawerView);
                }
            };
            Drawer.setDrawerListener(mDrawerToggle);// use this line to set Drawer toggle

Android没有看到ActionBarDrawerToggle

1 个答案: