diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ImagePickerDisplayer.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ImagePickerController.kt
similarity index 93%
rename from rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ImagePickerDisplayer.kt
rename to rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ImagePickerController.kt
index f0bd564..f07aec4 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ImagePickerDisplayer.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ImagePickerController.kt
@@ -5,7 +5,7 @@ import com.qingmei2.rximagepicker.entity.ConfigProvider
 import com.qingmei2.rximagepicker.ui.ActivityPickerViewController
 import com.qingmei2.rximagepicker.ui.ICustomPickerConfiguration
 
-class ImagePickerDisplayer(private val configProvider: ConfigProvider) {
+class ImagePickerController(private val configProvider: ConfigProvider) {
 
     fun display() {
         configProvider.config?.onDisplay()
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ProxyProviders.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ProxyProviders.kt
index 4ddc920..240b664 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ProxyProviders.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/ProxyProviders.kt
@@ -18,7 +18,7 @@ class ProxyProviders : InvocationHandler {
         return Observable.defer(Callable<ObservableSource<*>> {
             val configProvider = proxyTranslator.processMethod(method, args)
 
-            ImagePickerDisplayer(configProvider).display()
+            ImagePickerController(configProvider).display()
 
             val observable = rxImagePickerProcessor.process(configProvider)
 
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/RxImagePicker.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/RxImagePicker.kt
index f4c17be..d0e99fb 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/RxImagePicker.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/core/RxImagePicker.kt
@@ -1,14 +1,16 @@
 package com.qingmei2.rximagepicker.core
 
-import com.qingmei2.rximagepicker.ui.SystemImagePicker
+import com.qingmei2.rximagepicker.ui.BasicImagePicker
 import java.lang.reflect.Proxy
 
 object RxImagePicker {
 
-    fun create(): SystemImagePicker {
-        return create(SystemImagePicker::class.java)
+    @JvmStatic
+    fun create(): BasicImagePicker {
+        return create(BasicImagePicker::class.java)
     }
 
+    @JvmStatic
     @Suppress("UNCHECKED_CAST")
     fun <T> create(classProviders: Class<T>): T {
         val proxyProviders = ProxyProviders()
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/ConfigProvider.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/ConfigProvider.kt
index 09013bc..db9f0b9 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/ConfigProvider.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/ConfigProvider.kt
@@ -8,7 +8,7 @@ import com.qingmei2.rximagepicker.ui.ICustomPickerView
 import kotlin.reflect.KClass
 
 /**
- * Entity class for user's configration.
+ * Entity class for user's configuration.
  */
 data class ConfigProvider(val componentClazz: KClass<*>,
                           val asFragment: Boolean,
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/sources/Camera.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/sources/Camera.kt
index c7da6c8..2aa0ef3 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/sources/Camera.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/sources/Camera.kt
@@ -1,7 +1,7 @@
 package com.qingmei2.rximagepicker.entity.sources
 
 import androidx.annotation.IdRes
-import com.qingmei2.rximagepicker.ui.camera.SystemCameraFragment
+import com.qingmei2.rximagepicker.ui.camera.BasicCameraFragment
 import kotlin.reflect.KClass
 
 /**
@@ -18,7 +18,7 @@ annotation class Camera(
         /**
          * the UI component that will be displayed.
          */
-        val componentClazz: KClass<*> = SystemCameraFragment::class,
+        val componentClazz: KClass<*> = BasicCameraFragment::class,
 
         /**
          * the UI component type, as [Fragment] or [Activity].
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/sources/Gallery.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/sources/Gallery.kt
index 833d0b1..fa6dde8 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/sources/Gallery.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/entity/sources/Gallery.kt
@@ -1,7 +1,7 @@
 package com.qingmei2.rximagepicker.entity.sources
 
 import androidx.annotation.IdRes
-import com.qingmei2.rximagepicker.ui.gallery.SystemGalleryFragment
+import com.qingmei2.rximagepicker.ui.gallery.BasicGalleryFragment
 import kotlin.reflect.KClass
 
 /**
@@ -18,7 +18,7 @@ annotation class Gallery(
         /**
          * the UI component that will be displayed.
          */
-        val componentClazz: KClass<*> = SystemGalleryFragment::class,
+        val componentClazz: KClass<*> = BasicGalleryFragment::class,
 
         /**
          * the UI component type, as [Fragment] or [Activity].
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/function/Functions.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/function/Functions.kt
index 26f0510..b03e0b7 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/function/Functions.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/function/Functions.kt
@@ -7,4 +7,4 @@ import kotlin.jvm.JvmName
 
 fun parseResultNoExtraData(uri: Uri): Result {
     return Result.Builder(uri).build()
-}
+}
\ No newline at end of file
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/SystemImagePicker.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/BasicImagePicker.kt
similarity index 93%
rename from rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/SystemImagePicker.kt
rename to rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/BasicImagePicker.kt
index ce60e68..dcc7610 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/SystemImagePicker.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/BasicImagePicker.kt
@@ -6,7 +6,7 @@ import com.qingmei2.rximagepicker.entity.sources.Camera
 import com.qingmei2.rximagepicker.entity.sources.Gallery
 import io.reactivex.Observable
 
-interface SystemImagePicker {
+interface BasicImagePicker {
 
     @Gallery
     fun openGallery(context: Context): Observable<Result>
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/camera/SystemCameraFragment.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/camera/BasicCameraFragment.kt
similarity index 96%
rename from rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/camera/SystemCameraFragment.kt
rename to rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/camera/BasicCameraFragment.kt
index 0f1b8bd..f867e61 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/camera/SystemCameraFragment.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/camera/BasicCameraFragment.kt
@@ -15,7 +15,7 @@ import io.reactivex.subjects.PublishSubject
 import java.text.SimpleDateFormat
 import java.util.*
 
-class SystemCameraFragment : BaseSystemPickerFragment(), ICameraCustomPickerView {
+class BasicCameraFragment : BaseSystemPickerFragment(), ICameraCustomPickerView {
 
     private var cameraPictureUrl: Uri? = null
 
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/DefaultSystemGalleryConfig.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/BasicGalleryConfig.kt
similarity index 88%
rename from rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/DefaultSystemGalleryConfig.kt
rename to rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/BasicGalleryConfig.kt
index 9002eec..fb388c8 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/DefaultSystemGalleryConfig.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/BasicGalleryConfig.kt
@@ -74,5 +74,12 @@ sealed class DefaultGalleryMimes {
         fun imageOnly(): BaseMimesType = Image
 
         fun audioOnly(): BaseMimesType = Audio
+
+        // Call this function if you want to select multiple types at the same time.
+        // For example: "video/*;image/*"
+        fun customTypes(types: String): BaseMimesType = object : BaseMimesType() {
+
+            override fun getMimesType(): String = types
+        }
     }
 }
\ No newline at end of file
diff --git a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/SystemGalleryFragment.kt b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/BasicGalleryFragment.kt
similarity index 96%
rename from rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/SystemGalleryFragment.kt
rename to rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/BasicGalleryFragment.kt
index e1c8e55..b549d5c 100644
--- a/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/SystemGalleryFragment.kt
+++ b/rximagepicker/src/main/java/com/qingmei2/rximagepicker/ui/gallery/BasicGalleryFragment.kt
@@ -11,7 +11,7 @@ import com.qingmei2.rximagepicker.ui.ICustomPickerConfiguration
 import io.reactivex.Observable
 import io.reactivex.subjects.PublishSubject
 
-class SystemGalleryFragment : BaseSystemPickerFragment(), IGalleryCustomPickerView {
+class BasicGalleryFragment : BaseSystemPickerFragment(), IGalleryCustomPickerView {
 
     private var mDefaultSystemGalleryConfig: DefaultSystemGalleryConfig? = null
 
diff --git a/rximagepicker/src/test/java/com/qingmei2/rximagepicker/core/RxImagePickerTest.kt b/rximagepicker/src/test/java/com/qingmei2/rximagepicker/core/RxImagePickerTest.kt
index 716f8d4..df9b55a 100644
--- a/rximagepicker/src/test/java/com/qingmei2/rximagepicker/core/RxImagePickerTest.kt
+++ b/rximagepicker/src/test/java/com/qingmei2/rximagepicker/core/RxImagePickerTest.kt
@@ -6,7 +6,7 @@ class RxImagePickerTest {
 //    private val mockActivity: FragmentActivity = mock()
 //    private val mockFragmentManager: FragmentManager = mock()
 //
-//    private val mockPicker: SystemImagePicker = mock()
+//    private val mockPicker: BasicImagePicker = mock()
 //
 //    @Before
 //    fun setUp() {
@@ -46,13 +46,13 @@ class RxImagePickerTest {
 //    fun createTestWithNoParamSuccess() {
 //        val spy = instanceWithActivityBuilder()
 //                .let { spy(it) }
-//        doReturn(mockPicker).whenever(spy).create(SystemImagePicker::class.java)
+//        doReturn(mockPicker).whenever(spy).create(BasicImagePicker::class.java)
 //
 //        val defaultImagePicker = spy.create()
 //
 //        argumentCaptor<Class<Any>>().apply {
 //            verify(spy, Times(1)).create(capture())
-//            assertEquals(firstValue, SystemImagePicker::class.java)
+//            assertEquals(firstValue, BasicImagePicker::class.java)
 //        }
 //        assertEquals(defaultImagePicker, mockPicker)
 //    }
diff --git a/sample/src/main/java/com/qingmei2/sample/system/SystemActivity.kt b/sample/src/main/java/com/qingmei2/sample/system/SystemActivity.kt
index ca32aa3..84bb5f6 100644
--- a/sample/src/main/java/com/qingmei2/sample/system/SystemActivity.kt
+++ b/sample/src/main/java/com/qingmei2/sample/system/SystemActivity.kt
@@ -14,7 +14,7 @@ import kotlinx.android.synthetic.main.activity_system.*
 @SuppressLint("CheckResult")
 class SystemActivity : AppCompatActivity() {
 
-    private lateinit var defaultImagePicker: BasicImagePicker
+    private lateinit var defaultImagePicker: SystemImagePicker
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -26,7 +26,7 @@ class SystemActivity : AppCompatActivity() {
     }
 
     private fun initRxImagePicker() {
-        defaultImagePicker = RxImagePicker.create(BasicImagePicker::class.java)
+        defaultImagePicker = RxImagePicker.create(SystemImagePicker::class.java)
     }
 
     private fun pickGallery() {
@@ -34,7 +34,10 @@ class SystemActivity : AppCompatActivity() {
                 .openGallery(
                         this,
                         DefaultSystemGalleryConfig.instance(
-                                mimesType = DefaultGalleryMimes.videoOnly()
+                                // mimesType = DefaultGalleryMimes.videoOnly()     // only video files
+                                // mimesType = DefaultGalleryMimes.imageOnly()     // only image files, default options.
+                                // mimesType = DefaultGalleryMimes.audioOnly()     // only audio files
+                                mimesType = DefaultGalleryMimes.customTypes("video/*;image/*") // multiType
                         )
                 )
                 .subscribe { result -> onPickUriSuccess(result.uri) }
diff --git a/sample/src/main/java/com/qingmei2/sample/system/BasicImagePicker.kt b/sample/src/main/java/com/qingmei2/sample/system/SystemImagePicker.kt
similarity index 73%
rename from sample/src/main/java/com/qingmei2/sample/system/BasicImagePicker.kt
rename to sample/src/main/java/com/qingmei2/sample/system/SystemImagePicker.kt
index 12cd696..248e042 100644
--- a/sample/src/main/java/com/qingmei2/sample/system/BasicImagePicker.kt
+++ b/sample/src/main/java/com/qingmei2/sample/system/SystemImagePicker.kt
@@ -7,10 +7,11 @@ import com.qingmei2.rximagepicker.entity.sources.Gallery
 import com.qingmei2.rximagepicker.ui.ICustomPickerConfiguration
 import io.reactivex.Observable
 
-interface BasicImagePicker {
+interface SystemImagePicker {
 
     @Gallery
-    fun openGallery(context: Context, config: ICustomPickerConfiguration): Observable<Result>
+    fun openGallery(context: Context,
+                    config: ICustomPickerConfiguration?): Observable<Result>
 
     @Camera
     fun openCamera(context: Context): Observable<Result>