优化底部导航

app/src/main/java/cn/yunliyunwai/beyondclouds/MainActivity.java

@@ -29,6 +29,7 @@ import cn.yunliyunwai.beyondclouds.viewmodel.MainActivityViewModel;
 
 public class MainActivity extends BaseActivity<MainActivityViewModel, ActivityMainBinding> implements BottomNavigationView.OnNavigationItemSelectedListener, BottomNavigationView.OnNavigationItemReselectedListener {
 
+    private static final String MAIN_NAV_FRAGMENT_TAG_PREFIX = "main_nav_fragment:";
     private static final String TAG = MainActivity.class.getCanonicalName();
     private List<Fragment> fragments;
 
@@ -58,6 +59,10 @@ public class MainActivity extends BaseActivity<MainActivityViewModel, ActivityMa
     }
 
     private void initBottomNavigation(Bundle savedInstanceState) {
+        binding.bottomNavigationView.setOnNavigationItemSelectedListener(this);
+        binding.bottomNavigationView.setOnNavigationItemReselectedListener(this);
+        binding.bottomNavigationView.setItemIconTintList(null);
+
         fragments = new ArrayList<>(5);
         fragments.add(new HomeFragment());
         fragments.add(new ProjectFragment());
@@ -67,17 +72,19 @@ public class MainActivity extends BaseActivity<MainActivityViewModel, ActivityMa
 
         if (null != savedInstanceState) {
             for (Fragment fragment : getSupportFragmentManager().getFragments()) {
-                fragments.set(Integer.valueOf(fragment.getTag()), fragment);
+                String tag = fragment.getTag();
+                if (tag.startsWith(MAIN_NAV_FRAGMENT_TAG_PREFIX)) {
+                    fragments.set(Integer.valueOf(tag.replace(MAIN_NAV_FRAGMENT_TAG_PREFIX, "")), fragment);
+                }
+            }
+            if (binding.getViewModel().getCurrentIndex() != -1) {
+                switchFragment(binding.getViewModel().getCurrentIndex());
+            } else {
+                switchFragment(0);
             }
-            switchFragment(binding.getViewModel().getCurrentIndex());
         } else {
             switchFragment(0);
         }
-
-
-        binding.bottomNavigationView.setOnNavigationItemSelectedListener(this);
-        binding.bottomNavigationView.setOnNavigationItemReselectedListener(this);
-        binding.bottomNavigationView.setItemIconTintList(null);
     }
 
     @Override
@@ -141,7 +148,7 @@ public class MainActivity extends BaseActivity<MainActivityViewModel, ActivityMa
         if (fragments.get(index).isAdded()) {
             transaction.show(fragments.get(index));
         } else {
-            transaction.add(R.id.fragment_container, fragments.get(index), String.valueOf(index));
+            transaction.add(R.id.fragment_container, fragments.get(index), MAIN_NAV_FRAGMENT_TAG_PREFIX + String.valueOf(index));
         }
 
         transaction.commit();

app/src/main/java/cn/yunliyunwai/beyondclouds/ui/HomeFragment.java

@@ -5,7 +5,6 @@ import android.text.InputType;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -74,17 +73,6 @@ public class HomeFragment extends BaseFragment<HomeFragmentViewModel, FragmentHo
             }
         });
         binding.searchBar.setInputType(InputType.TYPE_NULL);
-        binding.searchBar.setInputFocusListener(new View.OnFocusChangeListener() {
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                if (!hasFocus) {
-                    return;
-                }
-                Toast.makeText(v.getContext(), "点击了搜索框", Toast.LENGTH_SHORT).show();
-                v.clearFocus();
-            }
-        });
-
 
     }
 

app/src/main/java/cn/yunliyunwai/beyondclouds/ui/ProjectFragment.java

@@ -5,7 +5,6 @@ import android.text.InputType;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -63,18 +62,6 @@ public class ProjectFragment extends BaseFragment<ProjectFragmentViewModel, Frag
         }, binding.magicIndicator, binding.viewPager, viewModel, false);
 
         binding.searchBar.setInputType(InputType.TYPE_NULL);
-        binding.searchBar.setInputFocusListener(new View.OnFocusChangeListener() {
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                if (!hasFocus) {
-                    return;
-                }
-                Toast.makeText(v.getContext(), "点击了搜索框", Toast.LENGTH_SHORT).show();
-                v.clearFocus();
-            }
-        });
-
-
     }
 
     @Override

app/src/main/res/layout/activity_main.xml

@@ -27,6 +27,9 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             app:layout_constraintBottom_toBottomOf="parent"
+            app:itemBackground="@null"
+            app:itemHorizontalTranslationEnabled="false"
+            app:itemIconTint="@null"
             app:itemIconSize="22dp"
             app:menu="@menu/bottom_menu"
             app:labelVisibilityMode="labeled"