Multiple dex files define

问题一:
Error:Error converting bytecode to dex:
Cause: com.android.dex.DexException:
Multiple dex files define Landroid/support/v7/widget/AdapterHelper$Callback;

Android Studio的情况下。双击shift弹出全局搜索，就可以找到，重复引用的类或者源码。到时候逐个去掉重复引用即可

http://blog.csdn.net/qq_24216407/article/details/72842614

问题二：

Caused by: 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.
at android.support.v7.app.AppCompatDelegateImplV9.setSupportActionBar(AppCompatDelegateImplV9.java:207)
at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:130)
at com.hbjyjt.logistics.activity.home.DriverMainActivity.setupToolbar(DriverMainActivity.java:41)
at com.hbjyjt.logistics.activity.home.DriverMainActivity.onCreate(DriverMainActivity.java:34)
at android.app.Activity.performCreate(Activity.java:5975)

将主题中的ActionBar去掉

android:theme="@style/Theme.AppCompat.Light.NoActionBar"