当搜索记录为0条的时候，提示toast，关闭软键盘

app/src/main/java/org/houxg/leamonax/ui/NoteFragment.java

@@ -56,6 +56,11 @@ public class NoteFragment extends Fragment implements NoteAdapter.NoteAdapterLis
     ActionModeHandler<Note> mActionModeHandler;
     NoteList mNoteList;
     Mode mCurrentMode;
+    OnSearchFinishListener mOnSearchFinishListener;
+
+    public void setOnSearchFinishListener(OnSearchFinishListener onSearchFinishListener) {
+        this.mOnSearchFinishListener = onSearchFinishListener;
+    }
 
     public NoteFragment() {
     }
@@ -146,6 +151,9 @@ public class NoteFragment extends Fragment implements NoteAdapter.NoteAdapterLis
         mNotes = notes;
         Collections.sort(mNotes, new Note.UpdateTimeComparetor());
         mNoteList.render(mNotes);
+        if (mNotes.size() == 0 && mOnSearchFinishListener != null) {
+            mOnSearchFinishListener.doSearchFinish();
+        }
     }
 
     @Override
@@ -304,4 +312,8 @@ public class NoteFragment extends Fragment implements NoteAdapter.NoteAdapterLis
         }
     }
 
+    public interface OnSearchFinishListener {
+        void doSearchFinish();
+    }
+
 }

app/src/main/java/org/houxg/leamonax/ui/SearchActivity.java

@@ -4,11 +4,12 @@ import android.os.Bundle;
 import android.support.v4.app.FragmentTransaction;
 import android.support.v7.widget.SearchView;
 import android.support.v7.widget.Toolbar;
-import android.text.TextUtils;
 import android.view.View;
 import android.widget.ImageView;
 
 import org.houxg.leamonax.R;
+import org.houxg.leamonax.utils.DisplayUtils;
+import org.houxg.leamonax.utils.ToastUtils;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
@@ -46,6 +47,13 @@ public class SearchActivity extends BaseActivity {
 
         FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
         mNoteFragment = NoteFragment.newInstance();
+        mNoteFragment.setOnSearchFinishListener(new NoteFragment.OnSearchFinishListener() {
+            @Override
+            public void doSearchFinish() {
+                ToastUtils.show(SearchActivity.this, R.string.activity_search_note_not_found);
+                DisplayUtils.hideKeyboard(mSearchView);
+            }
+        });
         transaction.add(R.id.container, mNoteFragment);
         transaction.commit();
 

app/src/main/java/org/houxg/leamonax/utils/DisplayUtils.java

@@ -1,6 +1,11 @@
 package org.houxg.leamonax.utils;
 
 
+import android.content.Context;
+import android.util.Log;
+import android.view.View;
+import android.view.inputmethod.InputMethodManager;
+
 import org.houxg.leamonax.Leamonax;
 
 public class DisplayUtils {
@@ -13,4 +18,32 @@ public class DisplayUtils {
         final float scale = Leamonax.getContext().getResources().getDisplayMetrics().density;
         return (int) (px / scale + 0.5f);
     }
+
+    public static void hideKeyboard(View view) {
+        if (view == null) {
+            return;
+        }
+        try {
+            InputMethodManager imm = (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
+            if (!imm.isActive()) {
+                return;
+            }
+            imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
+        } catch (Exception e) {
+            Log.e("DisplayUtils", e.getMessage());
+        }
+    }
+
+    public static void showKeyboard(View view) {
+        if (view == null) {
+            return;
+        }
+        view.requestFocus();
+        try {
+            InputMethodManager inputManager = (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
+            inputManager.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
+        } catch (Exception e) {
+            Log.e("DisplayUtils", e.getMessage());
+        }
+    }
 }

app/src/main/res/values-zh/strings.xml

@@ -113,4 +113,5 @@
     <string name="notebook_choose_notebook_hint">选择该笔记本所在的上一级笔记本目录</string>
     <string name="notebook_default_root_notebook_title">空目录(最顶层目录)</string>
     <string name="delete_network_error">网络不可用，将在下次同步时删除</string>
+    <string name="activity_search_note_not_found">没有找到</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -115,4 +115,5 @@
     <string name="notebook_choose_notebook_hint">选择该笔记本所在的上一级笔记本目录 Choose current Notebook \'s parentNotebook directory</string>
     <string name="notebook_default_root_notebook_title">Empty directory</string>
     <string name="delete_network_error">Network is unavailable, these notes will be deleted in next sync</string>
+    <string name="activity_search_note_not_found">Not found</string>
 </resources>