feat: added support for multi item layouts in RecyclerViews

Author: Blaž Vantur

library/src/main/java/com/ethanhua/skeleton/RecyclerViewSkeletonScreen.java

@@ -1,11 +1,14 @@
 package com.ethanhua.skeleton;
 
+import android.support.annotation.ArrayRes;
 import android.support.annotation.ColorRes;
 import android.support.annotation.IntRange;
 import android.support.annotation.LayoutRes;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.widget.RecyclerView;
 
+import java.util.List;
+
 /**
  * Created by ethanhua on 2017/7/29.
  */
@@ -23,6 +26,7 @@ private RecyclerViewSkeletonScreen(Builder builder) {
         mSkeletonAdapter = new SkeletonAdapter();
         mSkeletonAdapter.setItemCount(builder.mItemCount);
         mSkeletonAdapter.setLayoutReference(builder.mItemResID);
+        mSkeletonAdapter.setArrayOfLayoutReferences(builder.mItemsResIDArray);
         mSkeletonAdapter.shimmer(builder.mShimmer);
         mSkeletonAdapter.setShimmerColor(builder.mShimmerColor);
         mSkeletonAdapter.setShimmerAngle(builder.mShimmerAngle);
@@ -49,6 +53,7 @@ public static class Builder {
         private boolean mShimmer = true;
         private int mItemCount = 10;
         private int mItemResID = R.layout.layout_default_item_skeleton;
+        private int[] mItemsResIDArray;
         private int mShimmerColor;
         private int mShimmerDuration = 1000;
         private int mShimmerAngle = 20;
@@ -118,6 +123,14 @@ public Builder load(@LayoutRes int skeletonLayoutResID) {
             return this;
         }
 
+        /**
+         * @param skeletonLayoutResIDs the loading array of skeleton layoutResID
+         */
+        public Builder loadArrayOfLayouts(@ArrayRes int[] skeletonLayoutResIDs) {
+            this.mItemsResIDArray = skeletonLayoutResIDs;
+            return this;
+        }
+
         /**
          * @param frozen whether frozen recyclerView during skeleton showing
          * @return

library/src/main/java/com/ethanhua/skeleton/SkeletonAdapter.java

@@ -2,9 +2,14 @@
 
 import android.support.annotation.IntRange;
 import android.support.v7.widget.RecyclerView;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Random;
+
 import io.supercharge.shimmerlayout.ShimmerLayout;
 
 /**
@@ -15,6 +20,7 @@ public class SkeletonAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
 
     private int mItemCount;
     private int mLayoutReference;
+    private int[] mLayoutArrayReferences;
     private int mColor;
     private boolean mShimmer;
     private int mShimmerDuration;
@@ -23,9 +29,13 @@ public class SkeletonAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
     @Override
     public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         LayoutInflater inflater = LayoutInflater.from(parent.getContext());
+        if (doesArrayOfLayoutsExist()) {
+            mLayoutReference = viewType;
+        }
         if (mShimmer) {
             return new ShimmerViewHolder(inflater, parent, mLayoutReference);
         }
+
         return new RecyclerView.ViewHolder(inflater.inflate(mLayoutReference, parent, false)) {
         };
     }
@@ -41,6 +51,19 @@ public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
         }
     }
 
+    @Override
+    public int getItemViewType(int position) {
+        if(doesArrayOfLayoutsExist()) {
+            return getCorrectLayoutItem(position);
+        }
+        return super.getItemViewType(position);
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return position;
+    }
+
     @Override
     public int getItemCount() {
         return mItemCount;
@@ -50,6 +73,10 @@ public void setLayoutReference(int layoutReference) {
         this.mLayoutReference = layoutReference;
     }
 
+    public void setArrayOfLayoutReferences(int[] layoutReferences) {
+        this.mLayoutArrayReferences = layoutReferences;
+    }
+
     public void setItemCount(int itemCount) {
         this.mItemCount = itemCount;
     }
@@ -69,4 +96,15 @@ public void setShimmerDuration(int shimmerDuration) {
     public void setShimmerAngle(@IntRange(from = 0, to = 30) int shimmerAngle) {
         this.mShimmerAngle = shimmerAngle;
     }
+
+    public int getCorrectLayoutItem(int position) {
+        if(doesArrayOfLayoutsExist()) {
+            return mLayoutArrayReferences[position % mLayoutArrayReferences.length];
+        }
+        return mLayoutReference;
+    }
+
+    private boolean doesArrayOfLayoutsExist() {
+        return mLayoutArrayReferences != null && mLayoutArrayReferences.length != 0;
+    }
 }

sample/build.gradle

@@ -23,9 +23,9 @@ dependencies {
     androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    //implementation project(':library')
-    implementation 'com.ethanhua:skeleton:1.1.1'
-    implementation 'io.supercharge:shimmerlayout:2.1.0'
+    implementation project(':library')
+//    implementation 'com.ethanhua:skeleton:1.1.1'
+//    implementation 'io.supercharge:shimmerlayout:2.1.0'
     implementation 'com.android.support.constraint:constraint-layout:1.0.2'
     implementation 'com.android.support:recyclerview-v7:26.1.0'
     implementation 'com.android.support:appcompat-v7:26.1.0'

sample/build/generated/source/buildConfig/debug/com/ethanhua/skeleton/sample/BuildConfig.java

@@ -0,0 +1,13 @@
+/**
+ * Automatically generated file. DO NOT MODIFY
+ */
+package com.ethanhua.skeleton.sample;
+
+public final class BuildConfig {
+  public static final boolean DEBUG = Boolean.parseBoolean("true");
+  public static final String APPLICATION_ID = "com.ethanhua.skeleton.sample";
+  public static final String BUILD_TYPE = "debug";
+  public static final String FLAVOR = "";
+  public static final int VERSION_CODE = 6;
+  public static final String VERSION_NAME = "1.0.0";
+}

sample/build/generated/source/r/debug/android/arch/lifecycle/R.java

@@ -0,0 +1,10 @@
+/* AUTO-GENERATED FILE.  DO NOT MODIFY.
+ *
+ * This class was automatically generated by the
+ * gradle plugin from the resource data it found. It
+ * should not be modified by hand.
+ */
+package android.arch.lifecycle;
+
+public final class R {
+}

sample/build/generated/source/r/debug/android/support/compat/R.java

@@ -0,0 +1,129 @@
+/* AUTO-GENERATED FILE.  DO NOT MODIFY.
+ *
+ * This class was automatically generated by the
+ * gradle plugin from the resource data it found. It
+ * should not be modified by hand.
+ */
+package android.support.compat;
+
+public final class R {
+    public static final class attr {
+        public static final int font = 0x7f020075;
+        public static final int fontProviderAuthority = 0x7f020077;
+        public static final int fontProviderCerts = 0x7f020078;
+        public static final int fontProviderFetchStrategy = 0x7f020079;
+        public static final int fontProviderFetchTimeout = 0x7f02007a;
+        public static final int fontProviderPackage = 0x7f02007b;
+        public static final int fontProviderQuery = 0x7f02007c;
+        public static final int fontStyle = 0x7f02007d;
+        public static final int fontWeight = 0x7f02007e;
+    }
+    public static final class bool {
+        public static final int abc_action_bar_embed_tabs = 0x7f030000;
+    }
+    public static final class color {
+        public static final int notification_action_color_filter = 0x7f040045;
+        public static final int notification_icon_bg_color = 0x7f040046;
+        public static final int ripple_material_light = 0x7f040051;
+        public static final int secondary_text_default_material_light = 0x7f040053;
+    }
+    public static final class dimen {
+        public static final int compat_button_inset_horizontal_material = 0x7f05004a;
+        public static final int compat_button_inset_vertical_material = 0x7f05004b;
+        public static final int compat_button_padding_horizontal_material = 0x7f05004c;
+        public static final int compat_button_padding_vertical_material = 0x7f05004d;
+        public static final int compat_control_corner_material = 0x7f05004e;
+        public static final int notification_action_icon_size = 0x7f05005e;
+        public static final int notification_action_text_size = 0x7f05005f;
+        public static final int notification_big_circle_margin = 0x7f050060;
+        public static final int notification_content_margin_start = 0x7f050061;
+        public static final int notification_large_icon_height = 0x7f050062;
+        public static final int notification_large_icon_width = 0x7f050063;
+        public static final int notification_main_column_padding_top = 0x7f050064;
+        public static final int notification_media_narrow_margin = 0x7f050065;
+        public static final int notification_right_icon_size = 0x7f050066;
+        public static final int notification_right_side_padding_top = 0x7f050067;
+        public static final int notification_small_icon_background_padding = 0x7f050068;
+        public static final int notification_small_icon_size_as_large = 0x7f050069;
+        public static final int notification_subtext_size = 0x7f05006a;
+        public static final int notification_top_pad = 0x7f05006b;
+        public static final int notification_top_pad_large_text = 0x7f05006c;
+    }
+    public static final class drawable {
+        public static final int notification_action_background = 0x7f06005d;
+        public static final int notification_bg = 0x7f06005e;
+        public static final int notification_bg_low = 0x7f06005f;
+        public static final int notification_bg_low_normal = 0x7f060060;
+        public static final int notification_bg_low_pressed = 0x7f060061;
+        public static final int notification_bg_normal = 0x7f060062;
+        public static final int notification_bg_normal_pressed = 0x7f060063;
+        public static final int notification_icon_background = 0x7f060064;
+        public static final int notification_template_icon_bg = 0x7f060065;
+        public static final int notification_template_icon_low_bg = 0x7f060066;
+        public static final int notification_tile_bg = 0x7f060067;
+        public static final int notify_panel_notification_icon_bg = 0x7f060068;
+    }
+    public static final class id {
+        public static final int action_container = 0x7f07000e;
+        public static final int action_divider = 0x7f070010;
+        public static final int action_image = 0x7f070011;
+        public static final int action_text = 0x7f070017;
+        public static final int actions = 0x7f070018;
+        public static final int async = 0x7f07001e;
+        public static final int blocking = 0x7f070024;
+        public static final int chronometer = 0x7f070034;
+        public static final int forever = 0x7f070047;
+        public static final int icon = 0x7f07004a;
+        public static final int icon_group = 0x7f07004b;
+        public static final int info = 0x7f070054;
+        public static final int italic = 0x7f070055;
+        public static final int line1 = 0x7f070058;
+        public static final int line3 = 0x7f070059;
+        public static final int normal = 0x7f070062;
+        public static final int notification_background = 0x7f070063;
+        public static final int notification_main_column = 0x7f070064;
+        public static final int notification_main_column_container = 0x7f070065;
+        public static final int right_icon = 0x7f07006d;
+        public static final int right_side = 0x7f07006e;
+        public static final int text = 0x7f07008e;
+        public static final int text2 = 0x7f07008f;
+        public static final int time = 0x7f070092;
+        public static final int title = 0x7f070093;
+    }
+    public static final class integer {
+        public static final int status_bar_notification_info_maxnum = 0x7f080004;
+    }
+    public static final class layout {
+        public static final int notification_action = 0x7f09002e;
+        public static final int notification_action_tombstone = 0x7f09002f;
+        public static final int notification_template_custom_big = 0x7f090036;
+        public static final int notification_template_icon_group = 0x7f090037;
+        public static final int notification_template_part_chronometer = 0x7f09003b;
+        public static final int notification_template_part_time = 0x7f09003c;
+    }
+    public static final class string {
+        public static final int status_bar_notification_info_overflow = 0x7f0b0022;
+    }
+    public static final class style {
+        public static final int TextAppearance_Compat_Notification = 0x7f0c00fa;
+        public static final int TextAppearance_Compat_Notification_Info = 0x7f0c00fb;
+        public static final int TextAppearance_Compat_Notification_Line2 = 0x7f0c00fd;
+        public static final int TextAppearance_Compat_Notification_Time = 0x7f0c0100;
+        public static final int TextAppearance_Compat_Notification_Title = 0x7f0c0102;
+        public static final int Widget_Compat_NotificationActionContainer = 0x7f0c016b;
+        public static final int Widget_Compat_NotificationActionText = 0x7f0c016c;
+    }
+    public static final class styleable {
+        public static final int[] FontFamily = { 0x7f020077, 0x7f020078, 0x7f020079, 0x7f02007a, 0x7f02007b, 0x7f02007c };
+        public static final int FontFamily_fontProviderAuthority = 0;
+        public static final int FontFamily_fontProviderCerts = 1;
+        public static final int FontFamily_fontProviderFetchStrategy = 2;
+        public static final int FontFamily_fontProviderFetchTimeout = 3;
+        public static final int FontFamily_fontProviderPackage = 4;
+        public static final int FontFamily_fontProviderQuery = 5;
+        public static final int[] FontFamilyFont = { 0x7f020075, 0x7f02007d, 0x7f02007e };
+        public static final int FontFamilyFont_font = 0;
+        public static final int FontFamilyFont_fontStyle = 1;
+        public static final int FontFamilyFont_fontWeight = 2;
+    }
+}