问官网android 点播demo运行报错，请问怎么解决？

01-11 155405.517: E/AndroidRuntime(20545): FATAL EXCEPTION: main01-11 155405.517: E/AndroidRuntime(20545): Process: com.example.playersdkdemo, PID: 2054501-11 155405.517: E/AndroidRuntime(20545): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.playersdkdemo/com.example.playersdkdemo.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class com.tencent.qcload.playersdk.ui.VideoRootFrame01-11 155405.517: E/AndroidRuntime(20545): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2362)01-11 155405.517: E/AndroidRuntime(20545): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2424)01-11 155405.517: E/AndroidRuntime(20545): at android.app.ActivityThread.access$900(ActivityThread.java:155)01-11 155405.517: E/AndroidRuntime(20545): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1323)01-11 155405.517: E/AndroidRuntime(20545): at android.os.Handler.dispatchMessage(Handler.java:102)01-11 155405.517: E/AndroidRuntime(20545): at android.os.Looper.loop(Looper.java:139)01-11 155405.517: E/AndroidRuntime(20545): at android.app.ActivityThread.main(ActivityThread.java:5298)01-11 155405.517: E/AndroidRuntime(20545): at java.lang.reflect.Method.invoke(Native Method)01-11 155405.517: E/AndroidRuntime(20545): at java.lang.reflect.Method.invoke(Method.java:372)01-11 155405.517: E/AndroidRuntime(20545): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:950)01-11 155405.517: E/AndroidRuntime(20545): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745)01-11 155405.517: E/AndroidRuntime(20545): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class com.tencent.qcload.playersdk.ui.VideoRootFrame01-11 155405.517: E/AndroidRuntime(20545): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:757)01-11 155405.517: E/AndroidRuntime(20545): at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)01-11 155405.517: E/AndroidRuntime(20545): at android.view.LayoutInflater.inflate(LayoutInflater.java:504)01-11 155405.517: E/AndroidRuntime(20545): at android.view.LayoutInflater.inflate(LayoutInflater.java:414)01-11 155405.517: E/AndroidRuntime(20545): at android.view.LayoutInflater.inflate(LayoutInflater.java:365)01-11 155405.517: E/AndroidRuntime(20545): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:378)01-11 155405.517: E/AndroidRuntime(20545): at android.app.Activity.setContentView(Activity.java:2202)01-11 155405.517: E/AndroidRuntime(20545): at com.example.playersdkdemo.MainActivity.onCreate(MainActivity.java:29)01-11 155405.517: E/AndroidRuntime(20545): at android.app.Activity.performCreate(Activity.java:6072)01-11 155405.517: E/AndroidRuntime(20545): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)01-11 155405.517: E/AndroidRuntime(20545): at com.lbe.client.zz.ba.callActivityOnCreate(InstrumentationDelegate.java:76)01-11 155405.517: E/AndroidRuntime(20545): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2315)01-11 155405.517: E/AndroidRuntime(20545): ... 10 more01-11 155405.517: E/AndroidRuntime(20545): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.tencent.qcload.playersdk.ui.VideoRootFrame" on path: DexPathList[zip file "/data/app/com.example.playersdkdemo-1/base.apk",nativeLibraryDirectories=/vendor/lib, /system/lib]01-11 155405.517: E/AndroidRuntime(20545): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)01-11 155405.517: E/AndroidRuntime(20545): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)01-11 155405.517: E/AndroidRuntime(20545): at java.lang.ClassLoader.loadClass(ClassLoader.java:469)01-11 155405.517: E/AndroidRuntime(20545): at android.view.LayoutInflater.createView(LayoutInflater.java:571)01-11 155405.517: E/AndroidRuntime(20545): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)01-11 155405.517: E/AndroidRuntime(20545): ... 21 more01-11 155405.517: E/AndroidRuntime(20545): Suppressed: java.lang.ClassNotFoundException: com.tencent.qcload.playersdk.ui.VideoRootFrame01-11 155405.517: E/AndroidRuntime(20545): at java.lang.Class.classForName(Native Method)01-11 155405.517: E/AndroidRuntime(20545): at java.lang.BootClassLoader.findClass(ClassLoader.java:781)01-11 155405.517: E/AndroidRuntime(20545): at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)01-11 155405.517: E/AndroidRuntime(20545): at java.lang.ClassLoader.loadClass(ClassLoader.java:504)01-11 155405.517: E/AndroidRuntime(20545): ... 24 more01-11 155405.517: E/AndroidRuntime(20545): Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available