recyclerview - Could not found method compile() in gradle Android Studio -

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i'm new android studio , android development , developing first application.

i want use carview , recyclerview display data. according many tutorials on it, need add following dependencies 

compile 'com.android.support:cardview-v7:21.0.+' compile 'com.android.support:recyclerview-v7:21.0.+'

this how build.gradle is

// top-level build file can add configuration options common sub-projects/modules.  buildscript {     repositories {         jcenter()     }     dependencies {         classpath 'com.android.tools.build:gradle:2.2.2'          // note: not place application dependencies here; belong         // in individual module build.gradle files     } }  allprojects {     repositories {         jcenter()     } }  task clean(type: delete) {     delete rootproject.builddir }  dependencies {     compile 'com.android.support:cardview-v7:21.0.+'     compile 'com.android.support:recyclerview-v7:21.0.+' }

but on sync gradle, gives error as

error:could not find method compile() arguments [com.android.support:cardview-v7:21.0.+] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.defaultdependencyhandler.  please install android support repository android sdk manager.

i tried many solutions google search couldn't found working.

android studio creates project 2 build.gradle files.

this section of code 

dependencies {     compile 'com.android.support:cardview-v7:21.0.+'     compile 'com.android.support:recyclerview-v7:21.0.+' }

goes app/build.gradle of project. want update 21 version number sdk you're compiling with.

after that, have install android support repository android sdk manager.


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