title: Error inflating class com.google.android.gms.common.SignInButton
body: <p>I have tried to integrate google+ authentication in my android app but got an exception. I have included google-play-services.jar and google-play-services_lib as library project.
  I have attached log cat file below</p>
  
  <pre><code>   ComponentInfo{com.GenioCode.doodle/com.GenioCode.doodle.Register}: android.view.InflateException: Binary XML file line #115: Error inflating class com.google.android.gms.common.SignInButton
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.ActivityThread.access$600(ActivityThread.java:141)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.os.Handler.dispatchMessage(Handler.java:99)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.os.Looper.loop(Looper.java:137)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.ActivityThread.main(ActivityThread.java:5041)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at java.lang.reflect.Method.invokeNative(Native Method)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at java.lang.reflect.Method.invoke(Method.java:511)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at dalvik.system.NativeStart.main(Native Method)
  12-24 02:49:44.566: E/AndroidRuntime(12969): Caused by: android.view.InflateException: Binary XML file line #115: Error inflating class com.google.android.gms.common.SignInButton
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:749)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.Activity.setContentView(Activity.java:1881)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at com.GenioCode.doodle.Register.onCreate(Register.java:40)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.Activity.performCreate(Activity.java:5104)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    ... 11 more
  12-24 02:49:44.566: E/AndroidRuntime(12969): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.common.SignInButton" on path: /data/app/com.GenioCode.doodle-1.apk
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.createView(LayoutInflater.java:552)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
  12-24 02:49:44.566: E/AndroidRuntime(12969):    ... 23 more
  </code></pre>
  
  <p>What is the issue here</p>