defaultConfig
                        
                               {    
                        
                                multiDexEnabled true 
                        
                               }
                        
                        
                        
                              dependencies {
                        
                               compile 'com.android.support:multidex:1.0.0'
                        
                              }
                        
                        and also add this method into your application class
                        
                        
                        
                             @Override
                        
                             protected void attachBaseContext(Context newBase) {
                        
                        
                        
                              super.attachBaseContext(newBase);
                        
                        
                        
                              MultiDex.install(this);
                        
                            }