not scroll to top when setdata

SilenceDut · Jul 8, 2019 · 8f678ca · 8f678ca
1 parent d4085ec
commit 8f678ca
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Showing 3 changed files with 18 additions and 12 deletions.
diff --git a/app/src/main/java/com/silencedut/diffadapterdemo/LOLActivity.kt b/app/src/main/java/com/silencedut/diffadapterdemo/LOLActivity.kt
@@ -15,6 +15,7 @@ import com.silencedut.core.provider.legend.ILegendDateProvider
 import com.silencedut.diffadapter.DiffAdapter
 import com.silencedut.diffadapter.data.BaseMutableData
 import com.silencedut.diffadapter.rvhelper.RvHelper
+import com.silencedut.diffadapter.rvhelper.RvHelper.Companion
 import com.silencedut.diffadapter.utils.DiffModelProvider
 import com.silencedut.diffadapterdemo.adapter.LegendHolder
 import com.silencedut.diffadapterdemo.adapter.LegendViewData
@@ -197,7 +198,7 @@ class LOLActivity : AppCompatActivity(){
                                     return
                                 }
                                 mRVTest?.let {
-                                    RvHelper.scrollToBottom(it,(0 until diffAdapter.itemCount).random())
+                                    RvHelper.scrollTo(it, (0 until diffAdapter.itemCount).random())
                                 }
 
                                 val time = (300 until 500L).random()

diff --git a/diffadapter/src/main/java/com/silencedut/diffadapter/DiffAdapter.java b/diffadapter/src/main/java/com/silencedut/diffadapter/DiffAdapter.java
@@ -282,14 +282,6 @@ public void setDatas(List<? extends BaseMutableData> datas) {
 
         List<BaseMutableData> newList = new ArrayList<>(datas);
         mDifferHelper.submitList(newList);
-        if(mAttachedRecyclerView!=null) {
-            mDiffHandler.postDelayed(new Runnable() {
-                @Override
-                public void run() {
-                    RvHelper.Companion.scrollToBottom(mAttachedRecyclerView,0);
-                }
-            },1000);
-        }
     }
 
     public void clear() {

diff --git a/diffadapter/src/main/java/com/silencedut/diffadapter/rvhelper/RvHelper.kt b/diffadapter/src/main/java/com/silencedut/diffadapter/rvhelper/RvHelper.kt
@@ -19,14 +19,27 @@ class RvHelper {
             return recyclerView.computeVerticalScrollExtent() + recyclerView.computeVerticalScrollOffset() >= recyclerView.computeVerticalScrollRange()
         }
 
-        fun scrollToBottom(recyclerView: RecyclerView?,position:Int) {
+        @Deprecated("no use anymore",ReplaceWith("RvHelper.scrollTo(recyclerView,position)" ))
+        fun scrollToBottom(recyclerView: RecyclerView?, position: Int) {
             recyclerView?.layoutManager?.let {
-                if(it is LinearLayoutManager) {
+                if (it is LinearLayoutManager) {
                     it.scrollToPositionWithOffset(position, 0)
                 }
             }
         }
 
+        fun scrollTo(recyclerView: RecyclerView?, position: Int, delayed: Long = 0) {
+
+            recyclerView?.postDelayed({
+                recyclerView.layoutManager?.let {
+                    if (it is LinearLayoutManager) {
+                        it.scrollToPositionWithOffset(position, 0)
+                    }
+                }
+            },delayed)
+
+        }
+
         /**
          * 关闭默认局部刷新动画，对性能要求高的地方试用，比如一些公屏等刷新频繁的
          */
@@ -36,7 +49,7 @@ class RvHelper {
                 it.changeDuration = 0
                 it.moveDuration = 0
                 it.removeDuration = 0
-                if(it is SimpleItemAnimator) {
+                if (it is SimpleItemAnimator) {
                     it.supportsChangeAnimations = false
                 }
             }