Merge pull request #15 from AlanCheen/feature/asynclistdiffer

Feature/asynclistdiffer
AlanCheen · Jan 8, 2019 · a942741 · a942741
2 parents a9d11b9 + 68c2f4a
commit a942741
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Showing 4 changed files with 86 additions and 27 deletions.
diff --git a/app/src/main/java/me/yifeiyuan/flapdev/DifferActivity.java b/app/src/main/java/me/yifeiyuan/flapdev/DifferActivity.java
@@ -4,15 +4,13 @@
 import android.os.Handler;
 import android.support.annotation.NonNull;
 import android.support.v7.app.AppCompatActivity;
-import android.support.v7.recyclerview.extensions.AsyncListDiffer;
 import android.support.v7.util.DiffUtil;
 import android.support.v7.widget.RecyclerView;
-import android.util.Log;
 
 import java.util.ArrayList;
 import java.util.List;
 
-import me.yifeiyuan.flap.FlapAdapter;
+import me.yifeiyuan.flap.extensions.DifferFlapAdapter;
 import me.yifeiyuan.flapdev.simpletext.SimpleTextModel;
 
 /**
@@ -24,8 +22,7 @@ public class DifferActivity extends AppCompatActivity {
 
     private static final String TAG = "DifferActivity";
 
-    private FlapAdapter flapAdapter;
-    private AsyncListDiffer<SimpleTextModel> differ;
+    private DifferFlapAdapter<SimpleTextModel> flapAdapter;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -34,49 +31,59 @@ protected void onCreate(Bundle savedInstanceState) {
 
         RecyclerView recyclerView = findViewById(R.id.rv_items);
 
-        flapAdapter = new FlapAdapter();
-
-        List<SimpleTextModel> models = new ArrayList<>();
-
-        models.add(new SimpleTextModel("Android"));
-        models.add(new SimpleTextModel("Java"));
-        models.add(new SimpleTextModel("Kotlin"));
-
-        flapAdapter.setData(models);
-
-        recyclerView.setAdapter(flapAdapter);
-
-        differ = new AsyncListDiffer<SimpleTextModel>(flapAdapter, new DiffUtil.ItemCallback<SimpleTextModel>() {
+        flapAdapter = new DifferFlapAdapter<>(new DiffUtil.ItemCallback<SimpleTextModel>() {
             @Override
             public boolean areItemsTheSame(@NonNull final SimpleTextModel simpleTextModel, @NonNull final SimpleTextModel t1) {
-                Log.d(TAG, "areItemsTheSame() called with: simpleTextModel = [" + simpleTextModel + "], t1 = [" + t1 + "]");
-                return false;
+                return true;
             }
 
             @Override
             public boolean areContentsTheSame(@NonNull final SimpleTextModel simpleTextModel, @NonNull final SimpleTextModel t1) {
-                Log.d(TAG, "areContentsTheSame() called with: simpleTextModel = [" + simpleTextModel + "], t1 = [" + t1 + "]");
-                return false;
+                return simpleTextModel.equals(t1);
             }
         });
+
+        List<SimpleTextModel> models = new ArrayList<>();
+
+        for (int i = 0; i < 20; i++) {
+            models.add(new SimpleTextModel("Android :" + i));
+        }
+
+        flapAdapter.setData(models);
+
+        recyclerView.setAdapter(flapAdapter);
     }
 
     @Override
     protected void onResume() {
         super.onResume();
         changeModels();
+//        testClear();
+    }
+
+    private void testClear() {
+        new Handler().postDelayed(new Runnable() {
+
+            @Override
+            public void run() {
+//                flapAdapter.getData().clear(); will throw UnsupportedOperationException
+                flapAdapter.setData(new ArrayList<>());
+            }
+        }, 3000);
     }
 
     private void changeModels() {
         new Handler().postDelayed(new Runnable() {
             @Override
             public void run() {
                 List<SimpleTextModel> newModels = new ArrayList<>();
-                newModels.add(new SimpleTextModel("iOS"));
-                newModels.add(new SimpleTextModel("OC"));
-                newModels.add(new SimpleTextModel("Kotlin"));
+
+                for (int i = 0; i < 20; i++) {
+//                    newModels.add(new SimpleTextModel("Android :" + i));
+                    newModels.add(new SimpleTextModel("Android :" + (i % 2 == 0 ? i : (666))));
+                }
+
                 flapAdapter.setData(newModels);
-                differ.submitList(newModels);
             }
         }, 5000);
     }

diff --git a/app/src/main/java/me/yifeiyuan/flapdev/simpletext/SimpleTextItem.java b/app/src/main/java/me/yifeiyuan/flapdev/simpletext/SimpleTextItem.java
@@ -1,6 +1,7 @@
 package me.yifeiyuan.flapdev.simpletext;
 
 import android.support.annotation.NonNull;
+import android.util.Log;
 import android.view.View;
 import android.widget.TextView;
 
@@ -27,6 +28,7 @@ public SimpleTextItem(final View itemView) {
 
     @Override
     protected void onBind(@NonNull final SimpleTextModel model, @NonNull final FlapAdapter adapter, @NonNull final List<Object> payloads) {
+        Log.d(TAG, "onBind: " + getAdapterPosition());
         tvContent.setText(model.content);
     }
 

diff --git a/flap/src/main/java/me/yifeiyuan/flap/FlapAdapter.java b/flap/src/main/java/me/yifeiyuan/flap/FlapAdapter.java
@@ -116,7 +116,7 @@ public FlapAdapter setLifecycleEnable(boolean lifecycleEnable) {
         return this;
     }
 
-    private Object getItem(final int position) {
+    protected Object getItem(final int position) {
         return getData().get(position);
     }
 

diff --git a/flap/src/main/java/me/yifeiyuan/flap/extensions/DifferFlapAdapter.java b/flap/src/main/java/me/yifeiyuan/flap/extensions/DifferFlapAdapter.java
@@ -0,0 +1,50 @@
+package me.yifeiyuan.flap.extensions;
+
+import android.support.annotation.NonNull;
+import android.support.v7.recyclerview.extensions.AsyncDifferConfig;
+import android.support.v7.recyclerview.extensions.AsyncListDiffer;
+import android.support.v7.util.AdapterListUpdateCallback;
+import android.support.v7.util.DiffUtil;
+
+import java.util.List;
+
+import me.yifeiyuan.flap.FlapAdapter;
+
+/**
+ * Created by 程序亦非猿 on 2019/1/4.
+ */
+@SuppressWarnings("unchecked")
+public class DifferFlapAdapter<T> extends FlapAdapter {
+
+    private AsyncListDiffer<T> differ;
+
+    public DifferFlapAdapter(final @NonNull DiffUtil.ItemCallback<T> itemCallback) {
+        differ = new AsyncListDiffer(this, itemCallback);
+    }
+
+    public DifferFlapAdapter(@NonNull AsyncDifferConfig<T> config) {
+        differ = new AsyncListDiffer(new AdapterListUpdateCallback(this), config);
+    }
+
+    @Override
+    public DifferFlapAdapter setData(@NonNull final List<?> data) {
+        differ.submitList((List<T>) data);
+        return this;
+    }
+
+    @Override
+    protected T getItem(int position) {
+        return differ.getCurrentList().get(position);
+    }
+
+    @Override
+    public int getItemCount() {
+        return differ.getCurrentList().size();
+    }
+
+    @NonNull
+    @Override
+    public List<T> getData() {
+        return differ.getCurrentList();
+    }
+}