Caused by: org.gradle.tooling.BuildException: Failed to read key from keystore     at com.android.build.gradle.tasks.PackageApplication.doFullTaskAction(PackageApplication.groovy:110)     at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.groovy:64)     at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:63)     at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(AnnotationProcessingTaskFactor y.java:235)     at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.jav a:211)     at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(AnnotationProcessingTaskFactory. java:222)     at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.jav a:200)     at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)     at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)     ... 47 more Caused by: com.android.builder.packaging.SigningException: Failed to read key from keystore     at com.android.builder.core.AndroidBuilder.packageApk(AndroidBuilder.java:1468)     at com.android.builder.core.AndroidBuilder$packageApk$6.call(Unknown Source)     at com.android.build.gradle.tasks.PackageApplication.doFullTaskAction(PackageApplication.groovy:95)     ... 55 more 

signingConfigs {   robert {     storePassword 'robert'     storeFile file('/Users/bournewang/Documents/Project/android.keystore')     keyPassword 'robert'     keyAlias 'mike'   } } 

Check your keystore file for first, in you example you creating file with name my-release-key.keystore. If its correct and really present in folder Users/bournewang/Documents/Project check alias, in your example it is -alias alias_name, but in config you specified alias mike

To find out what's wrong you can use gradle's singingReport command.  On mac:  ./gradlew signingReport On Windows:  gradle signingReport