Support sdk 19 where possible and add image picker (#10)3.0

* Fix plural

* Switch to long

* Test plural again

* Comment

* Major update to image picker and view utils

* Make image activity full screen

* Update min sdk and prefix

* Lower sdk requirement and make string private

* Bring kpref activity to sdk 19

13 files changed, 380 insertions, 180 deletions

diff --git a/imagepicker/README.md b/imagepicker/README.md
index 7fb185c..055b1c5 100644
--- a/imagepicker/README.md
+++ b/imagepicker/README.md
@@ -1,3 +1,21 @@
 # KAU :imagepicker
 
-WIP
\ No newline at end of file
+ImagePicker is a beautiful gallery activity that allows you to pick images
+from your storage. It is backed by FastAdapter and Glide, and offers blur and fade transitions.
+
+`ImagePickerActivity` is already fully functional, so you may directly add it to your manifest.
+However, you can also extend it to change the package name.
+
+You may also easily launch the activity through the simple binder:
+```
+Activity.kauLaunchImagePicker(YourClass::class.java, yourRequestCode)
+```
+
+If you are using the built in activity, you may omit the class argument.
+
+Note that this launches the activity through a `startActivityForResult` call
+
+You may get the activity response by overriding your `onActivityResult` method
+to first verify that the request code matches and then call `kauOnImagePickerResult`
+
+This module also has a template style `Kau.ImagePicker` that defaults to a slide up animation.
\ No newline at end of file
diff --git a/imagepicker/build.gradle b/imagepicker/build.gradle
index d63f5fd..a31fac0 100644
--- a/imagepicker/build.gradle
+++ b/imagepicker/build.gradle
@@ -1,12 +1,10 @@
-apply from: '../android-lib.gradle'
+ext.kauSubModuleMinSdk = project.CORE_MIN_SDK
 
-android {
-    resourcePrefix "kau_"
-}
+apply from: '../android-lib.gradle'
 
 dependencies {
 
-    compile project(':core-ui')
+    compile project(':adapter')
 
     compile "com.github.bumptech.glide:glide:${GLIDE}"
     kapt "com.github.bumptech.glide:compiler:${GLIDE}"
diff --git a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/BlurredImageView.kt b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/BlurredImageView.kt
index 8fb5cf3..2ce00ba 100644
--- a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/BlurredImageView.kt
+++ b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/BlurredImageView.kt
@@ -2,6 +2,7 @@ package ca.allanwang.kau.imagepicker
 
 import android.content.Context
 import android.graphics.Color
+import android.support.annotation.StyleRes
 import android.util.AttributeSet
 import android.view.View
 import android.widget.FrameLayout
@@ -17,15 +18,15 @@ import jp.wasabeef.blurry.internal.BlurTask
 /**
  * Created by Allan Wang on 2017-07-14.
  *
- * ImageView that is can be blurred and selected
+ * ImageView that can be blurred and selected
  * The frame is composed of three layers: the base, the blur, and the foreground
  * Images should be placed in the base view, and the blur view should not be touched
  * as the class will handle it
  * The foreground by default contains a white checkmark, but can be customized or hidden depending on the situation
  */
 class BlurredImageView @JvmOverloads constructor(
-        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0, defStyleRes: Int = 0
-) : FrameLayout(context, attrs, defStyleAttr, defStyleRes), MeasureSpecContract by MeasureSpecDelegate() {
+        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
+) : FrameLayout(context, attrs, defStyleAttr), MeasureSpecContract by MeasureSpecDelegate() {
 
     private var blurred = false
     val imageBase: ImageView by bindView(R.id.image_base)
@@ -38,11 +39,6 @@ class BlurredImageView @JvmOverloads constructor(
         imageForeground.setIcon(GoogleMaterial.Icon.gmd_check, 30)
     }
 
-    companion object {
-        const val ANIMATION_DURATION = 200L
-        const val ANIMATION_SCALE = 0.95f
-    }
-
     override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
         val result = onMeasure(this, widthMeasureSpec, heightMeasureSpec)
         super.onMeasure(result.first, result.second)
@@ -73,13 +69,12 @@ class BlurredImageView @JvmOverloads constructor(
         val factor = BlurFactor()
         factor.width = width
         factor.height = height
-        val task = BlurTask(imageBase, factor) {
+       BlurTask(imageBase, factor) {
             imageBlur.setImageDrawable(it)
             scaleAnimate(ANIMATION_SCALE).start()
             imageBlur.alphaAnimate(1f).start()
             imageForeground.alphaAnimate(1f).start()
-        }
-        task.execute()
+        }.execute()
     }
 
     /**
diff --git a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageHelper.kt b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageHelper.kt
deleted file mode 100644
index 9b45679..0000000
--- a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageHelper.kt
+++ /dev/null
@@ -1,10 +0,0 @@
-package ca.allanwang.kau.imagepicker
-
-import com.bumptech.glide.annotation.GlideModule
-import com.bumptech.glide.module.LibraryGlideModule
-
-/**
- * Created by Allan Wang on 2017-07-04.
- */
-@GlideModule
-class KauGlide : LibraryGlideModule()
\ No newline at end of file
diff --git a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageItem.kt b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageItem.kt
index 852e1e8..d258822 100644
--- a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageItem.kt
+++ b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageItem.kt
@@ -25,33 +25,42 @@ class ImageItem(val data: ImageModel)
     : KauIItem<ImageItem, ImageItem.ViewHolder>(R.layout.kau_iitem_image, { ViewHolder(it) }) {
 
     private var failedToLoad = false
+    var withFade = true
 
-    fun bindEvents(fastAdapter: FastAdapter<ImageItem>) {
-        fastAdapter.withMultiSelect(true)
-        fastAdapter.withSelectable(true)
-        fastAdapter.withOnClickListener { v, _, _, _ ->
-            val image = v as BlurredImageView
-            image.toggleBlur()
-            true
+    companion object {
+        fun bindEvents(fastAdapter: FastAdapter<ImageItem>) {
+            fastAdapter.withMultiSelect(true)
+                    .withSelectable(true)
+                    //adapter selector occurs before the on click event
+                    .withOnClickListener { v, _, item, _ ->
+                        val image = v as BlurredImageView
+                        if (item.isSelected) image.blur()
+                        else image.removeBlur()
+                        true
+                    }
         }
     }
 
+    override fun isSelectable(): Boolean = !failedToLoad
+
     override fun bindView(holder: ViewHolder, payloads: List<Any>?) {
         super.bindView(holder, payloads)
-        holder.container.alpha = 0f
+        if (withFade) holder.container.alpha = 0f
         Glide.with(holder.itemView)
                 .load(data.data)
                 .listener(object : RequestListener<Drawable> {
                     override fun onLoadFailed(e: GlideException?, model: Any, target: Target<Drawable>, isFirstResource: Boolean): Boolean {
                         failedToLoad = true;
                         holder.container.setIcon(GoogleMaterial.Icon.gmd_error);
-                        holder.container.animate().alpha(1f).start();
+                        if (withFade) holder.container.animate().alpha(1f).start();
                         return true;
                     }
 
                     override fun onResourceReady(resource: Drawable, model: Any, target: Target<Drawable>, dataSource: DataSource, isFirstResource: Boolean): Boolean {
-                        holder.container.animate().alpha(1f).start();
-                        return false;
+                        holder.container.imageBase.setImageDrawable(resource)
+                        if (isSelected) holder.container.blurInstantly()
+                        if (withFade) holder.container.animate().alpha(1f).start();
+                        return true;
                     }
                 })
                 .into(holder.container.imageBase)
@@ -63,14 +72,13 @@ class ImageItem(val data: ImageModel)
                 .sizePx(sizePx)
                 .paddingPx(sizePx / 3)
                 .color(Color.WHITE))
-        //todo add background
-        imageBase.setBackgroundColor(ImagePickerActivityBase.accentColor)
+        imageBase.setBackgroundColor(ImagePickerActivity.accentColor)
         imageForeground.gone()
     }
 
     private fun computeViewSize(context: Context): Int {
         val screenWidthPx = context.resources.displayMetrics.widthPixels
-        return screenWidthPx / ImagePickerActivityBase.computeColumnCount(context)
+        return screenWidthPx / ImagePickerActivity.computeColumnCount(context)
     }
 
     override fun unbindView(holder: ViewHolder) {
@@ -81,6 +89,7 @@ class ImageItem(val data: ImageModel)
         } else {
             holder.container.fullReset()
         }
+        failedToLoad = false
     }
 
     class ViewHolder(v: View) : RecyclerView.ViewHolder(v) {
diff --git a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageModel.kt b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageModel.kt
index 26e4137..d744650 100644
--- a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageModel.kt
+++ b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImageModel.kt
@@ -1,6 +1,8 @@
 package ca.allanwang.kau.imagepicker
 
 import android.database.Cursor
+import android.os.Parcel
+import android.os.Parcelable
 import android.provider.MediaStore
 import android.support.annotation.NonNull
 
@@ -8,14 +10,45 @@ import android.support.annotation.NonNull
 /**
  * Created by Allan Wang on 2017-07-14.
  */
-class ImageModel(@NonNull cursor: Cursor) {
 
-    val size = cursor.getLong(MediaStore.Images.Media.SIZE)
-    val dateModified = cursor.getLong(MediaStore.Images.Media.DATE_MODIFIED)
-    val data = cursor.getString(MediaStore.Images.Media.DATA)
-    val displayName = cursor.getString(MediaStore.Images.Media.DISPLAY_NAME)
+data class ImageModel(val size: Long, val dateModified: Long, val data: String, val displayName: String) : Parcelable {
 
-    private fun Cursor.getString(name: String) = getString(getColumnIndex(name))
-    private fun Cursor.getLong(name: String) = getLong(getColumnIndex(name))
+    constructor(@NonNull cursor: Cursor) : this(
+            cursor.getLong(MediaStore.Images.Media.SIZE),
+            cursor.getLong(MediaStore.Images.Media.DATE_MODIFIED),
+            cursor.getString(MediaStore.Images.Media.DATA),
+            cursor.getString(MediaStore.Images.Media.DISPLAY_NAME)
+    )
 
-}
\ No newline at end of file
+    constructor(parcel: Parcel) : this(
+            parcel.readLong(),
+            parcel.readLong(),
+            parcel.readString(),
+            parcel.readString())
+
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        parcel.writeLong(this.size)
+        parcel.writeLong(this.dateModified)
+        parcel.writeString(this.data)
+        parcel.writeString(this.displayName)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    companion object CREATOR : Parcelable.Creator<ImageModel> {
+        override fun createFromParcel(parcel: Parcel): ImageModel {
+            return ImageModel(parcel)
+        }
+
+        override fun newArray(size: Int): Array<ImageModel?> {
+            return arrayOfNulls(size)
+        }
+    }
+
+}
+
+private fun Cursor.getString(name: String) = getString(getColumnIndex(name))
+private fun Cursor.getLong(name: String) = getLong(getColumnIndex(name))
\ No newline at end of file
diff --git a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerActivity.kt b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerActivity.kt
new file mode 100644
index 0000000..814cde4
--- /dev/null
+++ b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerActivity.kt
@@ -0,0 +1,200 @@
+package ca.allanwang.kau.imagepicker
+
+import android.Manifest
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import android.database.Cursor
+import android.os.Bundle
+import android.provider.MediaStore
+import android.support.design.widget.AppBarLayout
+import android.support.design.widget.CoordinatorLayout
+import android.support.design.widget.FloatingActionButton
+import android.support.v4.app.LoaderManager
+import android.support.v4.content.CursorLoader
+import android.support.v4.content.Loader
+import android.support.v7.app.AppCompatActivity
+import android.support.v7.widget.GridLayoutManager
+import android.support.v7.widget.LinearLayoutManager
+import android.support.v7.widget.RecyclerView
+import android.support.v7.widget.Toolbar
+import android.widget.TextView
+import ca.allanwang.kau.animators.FadeScaleAnimatorAdd
+import ca.allanwang.kau.animators.KauAnimator
+import ca.allanwang.kau.permissions.kauRequestPermissions
+import ca.allanwang.kau.utils.*
+import com.mikepenz.fastadapter.commons.adapters.FastItemAdapter
+import com.mikepenz.google_material_typeface_library.GoogleMaterial
+
+
+/**
+ * Created by Allan Wang on 2017-07-04.
+ *
+ * Base activity for selecting images from storage
+ */
+open class ImagePickerActivity : AppCompatActivity(), LoaderManager.LoaderCallbacks<Cursor> {
+
+    val imageAdapter = FastItemAdapter<ImageItem>()
+
+    val coordinator: CoordinatorLayout by bindView(R.id.kau_coordinator)
+    val toolbar: Toolbar by bindView(R.id.kau_toolbar)
+    val selectionCount: TextView by bindView(R.id.kau_selection_count)
+    val recycler: RecyclerView by bindView(R.id.kau_recyclerview)
+    val fab: FloatingActionButton by bindView(R.id.kau_fab)
+
+    companion object {
+        /**
+         * Given the dimensions of our device and a minimum image size,
+         * Computer the optimal column count for our grid layout
+         *
+         * @return column count
+         */
+        fun computeColumnCount(context: Context): Int {
+            val minImageSizePx = context.dimenPixelSize(R.dimen.kau_image_minimum_size)
+            val screenWidthPx = context.resources.displayMetrics.widthPixels
+            return screenWidthPx / minImageSizePx
+        }
+
+        var accentColor: Int = 0xff666666.toInt()
+
+        fun onImagePickerResult(resultCode: Int, data: Intent?): List<ImageModel> {
+            if (resultCode != Activity.RESULT_OK || data == null || !data.hasExtra(IMAGE_PICKER_RESULT))
+                return emptyList()
+            return data.getParcelableArrayListExtra(IMAGE_PICKER_RESULT)
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContentView(R.layout.kau_activity_image_picker)
+
+        selectionCount.setCompoundDrawables(null, null, GoogleMaterial.Icon.gmd_image.toDrawable(this, 18), null)
+
+        setSupportActionBar(toolbar)
+        supportActionBar?.apply {
+            setDisplayHomeAsUpEnabled(true)
+            setDisplayShowHomeEnabled(true)
+            setHomeAsUpIndicator(GoogleMaterial.Icon.gmd_close.toDrawable(this@ImagePickerActivity, 18))
+        }
+        toolbar.setNavigationOnClickListener { onBackPressed() }
+
+        recycler.apply {
+            layoutManager = GridLayoutManager(context, computeColumnCount(context))
+            adapter = imageAdapter
+            setHasFixedSize(true)
+            itemAnimator = KauAnimator(FadeScaleAnimatorAdd(0.8f))
+        }
+
+        ImageItem.bindEvents(imageAdapter)
+        imageAdapter.withSelectionListener({ _, _ -> selectionCount.text = imageAdapter.selections.size.toString() })
+
+        fab.apply {
+            show()
+            setIcon(GoogleMaterial.Icon.gmd_send)
+            setOnClickListener {
+                val selection = imageAdapter.selectedItems
+                if (selection.isEmpty()) {
+                    toast(R.string.kau_no_images_selected)
+                } else {
+                    val intent = Intent()
+                    val data = ArrayList(selection.map { it.data })
+                    intent.putParcelableArrayListExtra(IMAGE_PICKER_RESULT, data)
+                    setResult(RESULT_OK, intent)
+                    finish()
+                }
+            }
+            hideOnDownwardsScroll(recycler)
+        }
+
+        loadImages()
+    }
+
+    /**
+     * Request read permissions and load all external images
+     * The result will be filtered through {@link #onLoadFinished(Loader, Cursor)}
+     * Call this to make sure that we request permissions each time
+     * The adapter will be cleared on each successful call
+     */
+    private fun loadImages() {
+        kauRequestPermissions(Manifest.permission.READ_EXTERNAL_STORAGE) {
+            granted, _ ->
+            if (granted) {
+                supportLoaderManager.initLoader(LOADER_ID, null, this)
+                setToolbarScrollable(true)
+            } else {
+                toast(R.string.kau_permission_denied)
+                setToolbarScrollable(false)
+            }
+        }
+    }
+
+    /**
+     * Decide whether the toolbar can hide itself
+     * We typically want this behaviour unless we don't have enough images
+     * to fill the entire screen. In that case we don't want the recyclerview to be scrollable
+     * which means the toolbar shouldn't scroll either
+
+     * @param scrollable true if scroll flags are enabled, false otherwise
+     */
+    private fun setToolbarScrollable(scrollable: Boolean) {
+        val params = toolbar.layoutParams as AppBarLayout.LayoutParams
+        if (scrollable)
+            params.scrollFlags = AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS or AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL
+        else
+            params.scrollFlags = 0
+    }
+
+    override fun onCreateLoader(id: Int, args: Bundle?): Loader<Cursor> {
+        val columns = arrayOf(
+                MediaStore.Images.Media._ID,
+                MediaStore.Images.Media.TITLE,
+                MediaStore.Images.Media.DATA,
+                MediaStore.Images.Media.SIZE,
+                MediaStore.Images.Media.DISPLAY_NAME,
+                MediaStore.Images.Media.DATE_MODIFIED
+        )
+        return CursorLoader(this,
+                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
+                columns,
+                null,
+                null,
+                //Sort by descending date
+                MediaStore.Images.Media.DATE_MODIFIED + " DESC")
+    }
+
+    override fun onLoadFinished(loader: Loader<Cursor>, data: Cursor?) {
+        reset()
+        if (data == null || !data.moveToFirst()) {
+            toast(R.string.kau_no_images_found)
+            setToolbarScrollable(false)
+            return
+        }
+        do {
+            val model = ImageModel(data)
+            if (!shouldLoad(model)) continue
+            imageAdapter.add(ImageItem(model))
+        } while (data.moveToNext())
+        setToolbarScrollable((recycler.layoutManager as LinearLayoutManager).findLastCompletelyVisibleItemPosition() < imageAdapter.getItemCount() - 1)
+    }
+
+    /**
+     * Optional filter to decide which images get displayed
+     * Defaults to checking their sizes to filter out
+     * very small images such as lurking drawables/icons
+     *
+     * Returns true if model should be displayed, false otherwise
+     */
+    open fun shouldLoad(model: ImageModel): Boolean = model.size > 10000L
+
+    private fun reset() {
+        imageAdapter.clear();
+    }
+
+    override fun onLoaderReset(loader: Loader<Cursor>) = reset()
+
+    override fun onBackPressed() {
+        setResult(RESULT_CANCELED)
+        super.onBackPressed()
+    }
+}
\ No newline at end of file
diff --git a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerActivityBase.kt b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerActivityBase.kt
deleted file mode 100644
index 24c2db7..0000000
--- a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerActivityBase.kt
+++ /dev/null
@@ -1,114 +0,0 @@
-package ca.allanwang.kau.imagepicker
-
-import android.Manifest
-import android.content.Context
-import android.database.Cursor
-import android.os.Bundle
-import android.provider.MediaStore
-import android.support.v4.app.LoaderManager
-import android.support.v4.content.CursorLoader
-import android.support.v4.content.Loader
-import android.support.v7.app.AppCompatActivity
-import android.support.v7.widget.GridLayoutManager
-import android.support.v7.widget.RecyclerView
-import android.support.v7.widget.Toolbar
-import ca.allanwang.kau.permissions.kauRequestPermissions
-import ca.allanwang.kau.ui.widgets.ElasticDragDismissFrameLayout
-import ca.allanwang.kau.utils.bindView
-import ca.allanwang.kau.utils.dimenPixelSize
-import com.mikepenz.fastadapter.commons.adapters.FastItemAdapter
-
-
-/**
- * Created by Allan Wang on 2017-07-04.
- *
- */
-abstract class ImagePickerActivityBase : AppCompatActivity(), LoaderManager.LoaderCallbacks<Cursor> {
-
-    val toolbar: Toolbar by bindView(R.id.kau_toolbar)
-    val draggableFrame: ElasticDragDismissFrameLayout by bindView(R.id.kau_draggable)
-    val recycler: RecyclerView by bindView(R.id.kau_recycler)
-    val imageAdapter = FastItemAdapter<ImageItem>()
-
-    companion object {
-        /**
-         * Given the dimensions of our device and a minimum image size,
-         * Computer the optimal column count for our grid layout
-         *
-         * @return column count
-         */
-        fun computeColumnCount(context: Context): Int {
-            val minImageSizePx = context.dimenPixelSize(R.dimen.kau_image_minimum_size)
-            val screenWidthPx = context.resources.displayMetrics.widthPixels
-            return screenWidthPx / minImageSizePx
-        }
-
-        var accentColor: Int = 0xff666666.toInt()
-    }
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.kau_activity_image_picker)
-        recycler.layoutManager = GridLayoutManager(this, computeColumnCount(this))
-        recycler.adapter = imageAdapter
-
-        with(imageAdapter) {
-            withPositionBasedStateManagement(false)
-            withMultiSelect(true)
-            withSelectable(true)
-            withOnClickListener { v, _, _, _ ->
-                (v as BlurredImageView).toggleBlur()
-                true
-            }
-        }
-        draggableFrame.addListener(object : ElasticDragDismissFrameLayout.SystemChromeFader(this) {
-            override fun onDragDismissed() {
-                if (draggableFrame.translationY < 0) {
-//                    window.returnTransition = TransitionInflater.from(this@ImagePickerActivityBase)
-//                            .inflateTransition(R.transition.kau_about_return_upwards)
-                }
-                finishAfterTransition()
-            }
-        })
-        kauRequestPermissions(Manifest.permission.READ_EXTERNAL_STORAGE) {
-            granted, _ ->
-            if (granted) {
-                supportLoaderManager.initLoader(42, null, this)
-            }
-        }
-    }
-
-    override fun onCreateLoader(id: Int, args: Bundle?): Loader<Cursor> {
-        val columns = arrayOf(
-                MediaStore.Images.Media._ID,
-                MediaStore.Images.Media.TITLE,
-                MediaStore.Images.Media.DATA,
-                MediaStore.Images.Media.SIZE,
-                MediaStore.Images.Media.DISPLAY_NAME,
-                MediaStore.Images.Media.DATE_MODIFIED
-        )
-        return CursorLoader(this,
-                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
-                columns,
-                null,
-                null,
-                MediaStore.Images.Media.DATE_MODIFIED + " DESC")
-    }
-
-    override fun onLoadFinished(loader: Loader<Cursor>, data: Cursor?) {
-        reset()
-        if (data == null) return
-        if (data.moveToFirst()) {
-            do {
-                val img = ImageModel(data)
-                imageAdapter.add(ImageItem(img))
-            } while (data.moveToNext())
-        }
-    }
-
-    private fun reset() {
-        imageAdapter.clear();
-    }
-
-    override fun onLoaderReset(loader: Loader<Cursor>) = reset()
-}
\ No newline at end of file
diff --git a/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerBinder.kt b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerBinder.kt
new file mode 100644
index 0000000..9e63464
--- /dev/null
+++ b/imagepicker/src/main/kotlin/ca/allanwang/kau/imagepicker/ImagePickerBinder.kt
@@ -0,0 +1,34 @@
+package ca.allanwang.kau.imagepicker
+
+import android.app.Activity
+import android.content.Intent
+
+/**
+ * Created by Allan Wang on 2017-07-21.
+ *
+ * Extension functions for interacting with the image picker
+ * as well as internal constants
+ */
+
+/**
+ * Image picker launcher
+ */
+fun Activity.kauLaunchImagePicker(clazz: Class<out ImagePickerActivity>, requestCode: Int) {
+    startActivityForResult(Intent(this, clazz), requestCode)
+}
+
+fun Activity.kauLaunchImagePicker(requestCode: Int) = kauLaunchImagePicker(ImagePickerActivity::class.java, requestCode)
+
+/**
+ * Image picker result
+ * call under [Activity.onActivityResult]
+ * and make sure that the requestCode matches first
+ */
+fun Activity.kauOnImagePickerResult(resultCode: Int, data: Intent?) = ImagePickerActivity.onImagePickerResult(resultCode, data)
+
+internal const val LOADER_ID = 42
+internal const val IMAGE_PICKER_RESULT = "image_picker_result"
+
+internal const val ANIMATION_DURATION = 200L
+internal const val ANIMATION_SCALE = 0.95f
+
diff --git a/imagepicker/src/main/res-public/values/public.xml b/imagepicker/src/main/res-public/values/public.xml
new file mode 100644
index 0000000..cf14680
--- /dev/null
+++ b/imagepicker/src/main/res-public/values/public.xml
@@ -0,0 +1,4 @@
+<resources xmlns:tools='http://schemas.android.com/tools' tools:ignore='ResourceName'>
+<!-- AUTO-GENERATED FILE.  DO NOT MODIFY. public.xml is generated by the generatepublicxml gradle task -->
+    <public name='dummy' type='id' />
+</resources>
\ No newline at end of file
diff --git a/imagepicker/src/main/res/layout/kau_activity_image_picker.xml b/imagepicker/src/main/res/layout/kau_activity_image_picker.xml
index 6e0bf67..5b0300d 100644
--- a/imagepicker/src/main/res/layout/kau_activity_image_picker.xml
+++ b/imagepicker/src/main/res/layout/kau_activity_image_picker.xml
@@ -1,29 +1,54 @@
 <?xml version="1.0" encoding="utf-8"?>
-<ca.allanwang.kau.ui.widgets.ElasticDragDismissFrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/kau_coordinator"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:id="@+id/kau_draggable"
-    app:dragDismissDistance="@dimen/kau_drag_dismiss_distance"
-    app:dragDismissScale="0.95">
+    android:fitsSystemWindows="true">
 
-    <LinearLayout
+    <android.support.design.widget.AppBarLayout
+        android:id="@+id/kau_appbar"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:layout_marginTop="@dimen/kau_drag_dismiss_distance"
-        android:orientation="vertical">
+        android:layout_height="wrap_content"
+        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
 
         <android.support.v7.widget.Toolbar
             android:id="@+id/kau_toolbar"
             android:layout_width="match_parent"
-            android:layout_height="?attr/actionBarSize" />
+            android:layout_height="?attr/actionBarSize"
+            app:layout_scrollFlags="scroll|enterAlways"
+            app:popupTheme="@style/ThemeOverlay.AppCompat.Light">
 
-        <android.support.v7.widget.RecyclerView
-            android:id="@+id/kau_recycler"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:background="?android:colorBackground" />
+            <TextView
+                android:id="@+id/kau_selection_count"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="end"
+                android:drawablePadding="@dimen/kau_padding_small"
+                android:gravity="center_vertical"
+                android:paddingEnd="@dimen/kau_padding_normal"
+                android:paddingStart="@dimen/kau_padding_normal"
+                android:text="@string/kau_0" />
+
+        </android.support.v7.widget.Toolbar>
+
+    </android.support.design.widget.AppBarLayout>
+
+    <android.support.v7.widget.RecyclerView
+        android:id="@+id/kau_recyclerview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/kau_fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/kau_fab_margin"
+        android:clickable="true"
+        app:backgroundTint="?colorAccent"
+        app:layout_anchor="@id/kau_recyclerview"
+        app:layout_anchorGravity="bottom|right|end" />
 
-    </LinearLayout>
 
-</ca.allanwang.kau.ui.widgets.ElasticDragDismissFrameLayout>
\ No newline at end of file
+</android.support.design.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/imagepicker/src/main/res/values/strings.xml b/imagepicker/src/main/res/values/strings.xml
new file mode 100644
index 0000000..7aa7f3e
--- /dev/null
+++ b/imagepicker/src/main/res/values/strings.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="kau_no_images_found">No images found</string>
+    <string name="kau_no_images_selected">No images have been selected</string>
+    <string name="kau_blurrable_imageview">Blurrable ImageView</string>
+</resources>
\ No newline at end of file
diff --git a/imagepicker/src/main/res/values/styles.xml b/imagepicker/src/main/res/values/styles.xml
index 1fbb184..0d9ce64 100644
--- a/imagepicker/src/main/res/values/styles.xml
+++ b/imagepicker/src/main/res/values/styles.xml
@@ -1,5 +1,7 @@
 <resources>
 
-    <style name="Kau.Translucent.ImagePicker" parent="Kau.Translucent.SlideBottom" />
+    <style name="Kau.ImagePicker">
+        <item name="android:windowAnimationStyle">@style/KauSlideInSlideOutBottom</item>
+    </style>
 
 </resources>