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I import project from eclipse to android studio, and got above message after Sync project with gradle files. I am new with android studio, don't know how to solve this error.

Following is the Gradle file.

apply plugin: 'com.android.application'
android {
    compileSdkVersion 19
    buildToolsVersion '19.1.0'
    defaultConfig {
        applicationId "com.s5.selfiemonkey1"
        minSdkVersion 14
        targetSdkVersion 14
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_6
        targetCompatibility JavaVersion.VERSION_1_6
    productFlavors {
dependencies {
    compile 'com.android.support:support-v4:18.0.0'
    compile 'com.google.android.gms:play-services:+'
    compile 'com.google.code.gson:gson:2.2.2'
    compile files('libs/AF-Android-SDK.jar')
    compile files('libs/AndroidSwipeLayout-v1.1.8.jar')
    compile files('libs/FlurryAnalytics-5.3.0.jar')
    compile files('libs/android-viewbadger.jar')
    compile files('libs/commons-codec-1.4.jar')
    compile files('libs/google-play-services.jar')
    compile files('libs/okhttp-2.5.0.jar')
    compile files('libs/okio-1.6.0.jar')
    compile files('libs/parcelgen.jar')
    compile files('libs/scribe-1.1.2.jar')
Build Gradle from Project 
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        jcenter()
    dependencies {
        classpath 'com.android.tools.build:gradle:1.2.3'
allprojects {
    repositories {
        jcenter()
Please advice. Thanks in advance. 
                Also one more thing  Found out in project  settings. In projects tab  android plugin repository was set to mavencentral but default library repository was blank, making both same worked for me.
– Charlie
                Sep 11, 2015 at 20:09
                sorry, but I am completely unknown with android studio and gradle scripting. Where I can find base build.gradle.
– Amol Patil
                Sep 7, 2015 at 12:59
you have to add the Gson library in the dependency using project structure, now to update the gradle, for the add the .jar file to your build.gradle file like
dependencies {
compile files('libs/gson-2.2.4.jar')
if it dosent works try changing it to 
dependencies{
compile 'com.google.code.gson:gson:2.2.+'
make sure you are also connected to the internet so that jars will be downloaded online through maven repo.
        
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