refresh diary list after click and edit diary

Author: yinjie

app/src/main/java/com/wingjay/jianshi/ui/DiaryListActivity.java

@@ -1,18 +1,17 @@
 package com.wingjay.jianshi.ui;
 
+import android.content.Intent;
 import android.database.Cursor;
-import android.support.v7.app.ActionBarActivity;
 import android.os.Bundle;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
-import android.view.Menu;
-import android.view.MenuItem;
 
 import com.wingjay.jianshi.R;
 import com.wingjay.jianshi.data.Diary;
 import com.wingjay.jianshi.db.DbUtil;
 import com.wingjay.jianshi.ui.adapter.DiaryListAdapter;
 import com.wingjay.jianshi.ui.base.BaseActivity;
+import com.wingjay.jianshi.util.ConstantUtil;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -21,7 +20,8 @@
 
 public class DiaryListActivity extends BaseActivity {
 
-    private List<Diary> diaryList;
+    private final List<Diary> diaryList = new ArrayList<>();
+    private DiaryListAdapter adapter;
 
     @InjectView(R.id.diary_list)
     RecyclerView diaryListView;
@@ -36,16 +36,27 @@ protected void onCreate(Bundle savedInstanceState) {
 
         // get all local diaries
         loadDiaries();
-        DiaryListAdapter adapter = new DiaryListAdapter(DiaryListActivity.this, diaryList);
+        adapter = new DiaryListAdapter(DiaryListActivity.this, diaryList);
         diaryListView.setAdapter(adapter);
     }
 
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (requestCode == ConstantUtil.REQUEST_CODE_VIEW_DIARY_FROM_LIST
+                && resultCode == RESULT_OK) {
+            loadDiaries();
+            adapter.notifyItemRangeChanged(0, diaryList.size());
+            adapter.notifyDataSetChanged();
+        }
+    }
+
     private void loadDiaries() {
-        diaryList = new ArrayList<>();
         Cursor cursor = DbUtil.getAllDiary();
         if (cursor.getCount() == 0) {
             return;
         }
+        diaryList.clear();
         if (cursor.moveToFirst()) {
             do {
                 Diary d = new Diary();

app/src/main/java/com/wingjay/jianshi/ui/ViewActivity.java

@@ -66,6 +66,7 @@ protected void onCreate(Bundle savedInstanceState) {
         edit.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
+                setResult(RESULT_OK);
                 Intent i = EditActivity.createIntentWithId(ViewActivity.this, diaryId);
                 startActivity(i);
                 finish();

app/src/main/java/com/wingjay/jianshi/ui/adapter/DiaryListAdapter.java

@@ -1,11 +1,9 @@
 package com.wingjay.jianshi.ui.adapter;
 
-import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.support.v7.app.AlertDialog;
 import android.support.v7.widget.RecyclerView;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -16,6 +14,8 @@
 import com.wingjay.jianshi.data.Diary;
 import com.wingjay.jianshi.db.DbUtil;
 import com.wingjay.jianshi.ui.ViewActivity;
+import com.wingjay.jianshi.ui.base.BaseActivity;
+import com.wingjay.jianshi.util.ConstantUtil;
 
 import java.util.List;
 
@@ -24,8 +24,8 @@
  */
 public class DiaryListAdapter extends RecyclerView.Adapter<DiaryListAdapter.DiaryListViewHolder> {
 
-    private Context context;
-    private List<Diary> diaryList;
+    private final BaseActivity context;
+    private final List<Diary> diaryList;
 
     public class DiaryListViewHolder extends RecyclerView.ViewHolder {
 
@@ -40,7 +40,7 @@ public DiaryListViewHolder(View itemView) {
         }
     }
 
-    public DiaryListAdapter(Context context, List<Diary> diaryList) {
+    public DiaryListAdapter(BaseActivity context, List<Diary> diaryList) {
         this.context = context;
         this.diaryList = diaryList;
     }
@@ -61,7 +61,7 @@ public void onBindViewHolder(DiaryListViewHolder diaryListViewHolder, int i) {
             @Override
             public void onClick(View v) {
                 Intent i = ViewActivity.createIntent(context, d.getId());
-                context.startActivity(i);
+                context.startActivityForResult(i, ConstantUtil.REQUEST_CODE_VIEW_DIARY_FROM_LIST);
             }
         });
         final int index = i;
@@ -97,6 +97,4 @@ public int getItemCount() {
         return diaryList.size();
     }
 
-
-
 }

app/src/main/java/com/wingjay/jianshi/util/ConstantUtil.java

@@ -0,0 +1,11 @@
+package com.wingjay.jianshi.util;
+
+/**
+ * Created by wingjay on 10/10/15.
+ */
+public class ConstantUtil {
+
+    public final static int REQUEST_CODE_VIEW_DIARY_FROM_LIST = 100;
+
+
+}