补货折叠

app/src/main/java/com/xingdata/zzdpos/ui/manage/replenishment/fragment/ReplenishmentDetailFragment.java

@@ -4,6 +4,7 @@ package com.xingdata.zzdpos.ui.manage.replenishment.fragment;
 import android.annotation.SuppressLint;
 import android.graphics.drawable.Drawable;
 import android.renderscript.ScriptGroup;
+import android.support.design.widget.AppBarLayout;
 import android.support.v7.widget.LinearLayoutManager;
 import android.text.InputType;
 import android.view.KeyEvent;
@@ -46,6 +47,13 @@ public class ReplenishmentDetailFragment extends BaseFragment<ReplenishmentPrese
     private Psb mPsb;
     private long sumPrice;
     private boolean isAdd = true;
+    private CollapsingToolbarLayoutState state;
+
+    private enum CollapsingToolbarLayoutState {
+        EXPANDED,
+        COLLAPSED,
+        INTERNEDIATE
+    }
 
     @Override
     public int getLayoutId() {
@@ -57,7 +65,7 @@ public class ReplenishmentDetailFragment extends BaseFragment<ReplenishmentPrese
 
         mViewBinding.edTitle.setHint(R.string.inventory_add_et_hint);
         mViewBinding.edTitle.setText("");
-
+        initCartBar();
         initRecycycler();
         initOnClickListener();
 
@@ -65,7 +73,7 @@ public class ReplenishmentDetailFragment extends BaseFragment<ReplenishmentPrese
         new android.os.Handler().postDelayed(new Runnable() {
             @Override
             public void run() {
-         mViewBinding.recyclerView.scrollToPosition(0);
+                mViewBinding.recyclerView.scrollToPosition(0);
             }
         }, 1);
     }
@@ -319,4 +327,38 @@ public class ReplenishmentDetailFragment extends BaseFragment<ReplenishmentPrese
         mPresenter.changeTitle(getResources().getString(R.string.replenishment_meun), false);
         return super.onBackPressedSupport();
     }
+
+    public void initCartBar() {
+        mViewBinding.setIsShowBar(false);
+        mViewBinding.appBar.addOnOffsetChangedListener(new AppBarLayout
+                .OnOffsetChangedListener() {
+            @Override
+            public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
+
+                if (verticalOffset == 0) {
+                    if (state != CollapsingToolbarLayoutState.EXPANDED) {
+                        mViewBinding.setIsShowBar(false);
+                        state = CollapsingToolbarLayoutState.EXPANDED;//修改状态标记为展开
+
+                    }
+                } else if (Math.abs(verticalOffset) >= appBarLayout.getTotalScrollRange()) {
+                    if (state != CollapsingToolbarLayoutState.COLLAPSED) {
+                        mViewBinding.setIsShowBar(true);
+
+                        state = CollapsingToolbarLayoutState.COLLAPSED;//修改状态标记为折叠
+                    }
+                } else {
+                    if (state != CollapsingToolbarLayoutState.INTERNEDIATE) {
+                        if (state == CollapsingToolbarLayoutState.COLLAPSED) {
+
+                            mViewBinding.setIsShowBar(false);
+                        }
+
+                        state = CollapsingToolbarLayoutState.INTERNEDIATE;//修改状态标记为中间
+                    }
+                }
+            }
+        });
+    }
+
 }