Android DEV: Andriod Studio Shows & #039; Waiting for device. & #039;

I upgraded Android Studio to 0.8.1 yesterday, so I cannot execute the App ~ The Run window shows Waiting for device. target device: lge-nexus_4-0262fa6d9d51c2e8 Event Log window display: NoSuchMethodError: com. android. builder. model. androidArtifact. getOutputs () Ljava/util/Collection;: com. android. builder. model. androidArtifact. getOutputs () Ljava/util/Collection; it has been tossing for a long time. later I remembered that Android Studio was upgraded by unzipping the installation package and overwriting the original directory. This may be because a file may have a 'new and old conflicted. check the file timestamp one by one and find that you only need to delete the 'old' file under the Android Studio directory and restart it. \ android-studio \ plugins \ android \ lib \ builder-model-0.11.0.jar because Android Studio 0.8.1 Gradle uses 0.12. + .. // Top-level build file where you can add configuration options common to all sub-projects/modules. buildscript {repositories {mavenCentral ()} dependencies {classpath 'com. android. tools. build: gradle: 0.12. + '// NOTE: Do not place your application dependencies here; they belong // in the individual module build. gradle files }}allprojects {repositories {mavenCentral () }}< ---- No Google Service ---->