无法在android上构建SlideUpPanel演示

Question

我正在尝试重建此库的示例：

https://github.com/umano/AndroidSlidingUpPanel

使用Android Studio 1.5，但是当它到达＆＃34; setSupportActionBar（（工具栏）findViewById（R.id.main_toolbar））;＆＃34;它引发了异常。

public class DemoActivity extends AppCompatActivity {
private static final String TAG = "DemoActivity";
private SlidingUpPanelLayout mLayout;

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

    setSupportActionBar((Toolbar) findViewById(R.id.main_toolbar));

异常：

java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.sothree.slidinguppanel/com.sothree.slidinguppanel.demo.
DemoActivity}: java.lang.IllegalStateException:
This Activity already has an action bar supplied by the window decor.
Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to
false in your theme to use a Toolbar instead.

my styles.xml

<style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    <item name="android:windowActionBar">false</item>
    <item name="colorPrimary">#ffff9431</item>
    <item name="colorPrimaryDark">#ffD56600</item>

我将windowActionBar设置为false。我甚至试图删除它，但它不起作用。

我试过这个帖子但没有成功：

This Activity already has an action bar supplied by the window decor

知道发生了什么事吗？