java - Android studio/SDK gone dead after sudden PC power off -

it working fine till pc lost power suddenly.

the whole project went dead, tools not identifying android apis or internal classes of project.

the build gradle below :

apply plugin: 'com.android.application'  android {     compilesdkversion 23     buildtoolsversion "23.0.1"      defaultconfig {         applicationid "com.xxxxx"         minsdkversion 15         targetsdkversion 23         versioncode 1         versionname "1.0"     }     buildtypes {         release {             minifyenabled true             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro'         }     }      compileoptions {         sourcecompatibility javaversion.version_1_7         targetcompatibility javaversion.version_1_7     } }    dependencies {     compile filetree(dir: 'libs', include: ['*.jar'])     compile 'junit:junit:4.12'     compile 'com.android.support:appcompat-v7:23.1.1'     compile 'com.mcxiaoke.volley:library:1.0.19'     compile 'com.android.support:design:23.1.1'     compile 'com.squareup.picasso:picasso:2.5.2'     compile 'com.android.support:support-v4:23.1.1'     compile 'fr.avianey.com.viewpagerindicator:library:2.4.1@aar'     compile 'uk.co.chrisjenx:calligraphy:2.1.0' } 

system/ide configurations below:

• android studio 1.5.1
• stable channel
• windows 7
• jdk 7

i tried following :

1. create new project, same error
2. open old working projects
3. reinstall jdk , setting java-home
4. delete , reinstall build tools , sdk working with
5. open android studio administrator

i tried following; 1- erase android studio files, redownload , setup ... didn't work 2- created new project using eclipse , worked fine, problem wasn't in jdk, sdk or android studio

the solution set new windows