相关疑难解决方法(0)

我正在尝试将我的应用从API19升级到API21

我对gradle属性所做的主要更改是:

compileSdkVersion 21
buildToolsVersion "21.0.2"

minSdkVersion 8
targetSdkVersion 21


compile 'com.android.support:appcompat-v7:21.0.0'

该应用程序构建正常,但我总是收到以下错误:

10-22 23:10:38.867    7972-8058/com.example.android.demo E/ACRA? com.example.android.demo fatal error : Unable to start activity ComponentInfo{com.example.android.demo/com.example.android.demo.MainActivity2}: android.view.InflateException: Binary XML file line #27: Error inflating class android.support.v7.internal.widget.ActionBarContainer
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.android.demo/com.example.android.demo.MainActivity2}: android.view.InflateException: Binary XML file line #27: Error inflating class android.support.v7.internal.widget.ActionBarContainer
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
        at android.app.ActivityThread.access$800(ActivityThread.java:144)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5221)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
 Caused by: android.view.InflateException: Binary XML …