code refactoring

- extract DashDividerDecoration class
- keep showing app name on main activity’s title
- show notebook’s title on list item

app/src/main/AndroidManifest.xml

@@ -34,13 +34,13 @@
             android:label="@string/preview" />
         <activity
             android:name=".ui.MainActivity"
-            android:label="@string/recent_notes" />
+            android:label="@string/app_name" />
         <activity android:name=".ui.SignInActivity" />
         <activity
             android:name=".ui.SettingsActivity"
             android:label="@string/settings" />
-
+        <activity
-        <activity android:name=".ui.AboutActivity"
+            android:name=".ui.AboutActivity"
             android:label="@string/about" />
 
         <service

app/src/main/java/org/houxg/leamonax/service/NoteService.java

@@ -30,6 +30,8 @@ import okhttp3.MediaType;
 import okhttp3.MultipartBody;
 import okhttp3.RequestBody;
 import retrofit2.Call;
+import rx.Observable;
+import rx.Subscriber;
 
 public class NoteService {
 
@@ -426,11 +428,17 @@ public class NoteService {
         return ApiProvider.getInstance().getNoteApi().update(requestBodyMap, fileBodies);
     }
 
-    public static void deleteNote(Note note) {
+    public static Observable<Void> deleteNote(final Note note) {
+        return Observable.create(
+                new Observable.OnSubscribe<Void>() {
+                    @Override
+                    public void call(Subscriber<? super Void> subscriber) {
+                        if (!subscriber.isUnsubscribed()) {
                             if (TextUtils.isEmpty(note.getNoteId())) {
                                 AppDataBase.deleteNoteByLocalId(note.getId());
                             } else {
-            UpdateRe response = RetrofitUtils.excuteWithException(deleteNote(note.getNoteId(), note.getUsn()));
+                                UpdateRe response = RetrofitUtils.excuteWithException(
+                                        ApiProvider.getInstance().getNoteApi().delete(note.getNoteId(), note.getUsn()));
                                 if (response.isOk()) {
                                     AppDataBase.deleteNoteByLocalId(note.getId());
                                     updateUsnIfNeed(response.getUsn());
@@ -438,6 +446,11 @@ public class NoteService {
                                     throw new IllegalStateException(response.getMsg());
                                 }
                             }
+                            subscriber.onNext(null);
+                            subscriber.onCompleted();
+                        }
+                    }
+                });
     }
 
     private static void updateUsnIfNeed(int newUsn) {

app/src/main/java/org/houxg/leamonax/service/NotebookService.java

@@ -3,6 +3,7 @@ package org.houxg.leamonax.service;
 
 import android.util.Log;
 
+import org.houxg.leamonax.database.AppDataBase;
 import org.houxg.leamonax.model.Account;
 import org.houxg.leamonax.model.Notebook;
 import org.houxg.leamonax.network.ApiProvider;
@@ -29,4 +30,9 @@ public class NotebookService {
             throw new IllegalStateException(notebook.getMsg());
         }
     }
+
+    public static String getTitle(long notebookLocalId) {
+        Notebook notebook = AppDataBase.getNotebookByLocalId(notebookLocalId);
+        return notebook != null ? notebook.getTitle() : "";
+    }
 }

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

@@ -51,7 +51,7 @@ import rx.schedulers.Schedulers;
 public class MainActivity extends BaseActivity implements NotebookAdapter.NotebookAdapterListener {
 
     private static final String EXT_SHOULD_RELOAD = "ext_should_reload";
-    private static final String TAG_NOTE_FRAGMENT = "note_fragment";
+    private static final String TAG_NOTE_FRAGMENT = "tag_note_fragment";
 
     NoteFragment mNoteFragment;
 
@@ -129,6 +129,15 @@ public class MainActivity extends BaseActivity implements NotebookAdapter.Notebo
         return super.onOptionsItemSelected(item);
     }
 
+    @Override
+    public void onBackPressed() {
+        if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
+            mDrawerLayout.closeDrawer(GravityCompat.START);
+        } else {
+            super.onBackPressed();
+        }
+    }
+
     private void fetchInfo() {
         AccountService.getInfo(AccountService.getCurrent().getUserId())
                 .subscribeOn(Schedulers.io())
@@ -169,7 +178,6 @@ public class MainActivity extends BaseActivity implements NotebookAdapter.Notebo
     public void onClickedNotebook(Notebook notebook) {
         mNoteFragment.loadNoteFromLocal(notebook.getId());
         mDrawerLayout.closeDrawer(GravityCompat.START, true);
-        setTitle(notebook.getTitle());
     }
 
     @Override
@@ -238,7 +246,6 @@ public class MainActivity extends BaseActivity implements NotebookAdapter.Notebo
     void showRecentNote() {
         mNoteFragment.loadNoteFromLocal(NoteFragment.RECENT_NOTES);
         mDrawerLayout.closeDrawer(GravityCompat.START, true);
-        setTitle(getString(R.string.recent_notes));
     }
 
     @OnClick(R.id.rl_about)

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

@@ -4,14 +4,8 @@ package org.houxg.leamonax.ui;
 import android.app.AlertDialog;
 import android.app.Fragment;
 import android.content.DialogInterface;
-import android.graphics.Canvas;
-import android.graphics.DashPathEffect;
-import android.graphics.Paint;
-import android.graphics.Path;
-import android.graphics.Rect;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
-import android.support.v13.view.ViewCompat;
 import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.widget.DefaultItemAnimator;
 import android.support.v7.widget.LinearLayoutManager;
@@ -36,6 +30,7 @@ import org.houxg.leamonax.service.NoteService;
 import org.houxg.leamonax.utils.DisplayUtils;
 import org.houxg.leamonax.utils.NetworkUtils;
 import org.houxg.leamonax.utils.ToastUtils;
+import org.houxg.leamonax.widget.DashDividerDecoration;
 
 import java.util.Collections;
 import java.util.List;
@@ -43,9 +38,7 @@ import java.util.Locale;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
-import rx.Observable;
 import rx.Observer;
-import rx.Subscriber;
 import rx.android.schedulers.AndroidSchedulers;
 import rx.schedulers.Schedulers;
 
@@ -206,17 +199,7 @@ public class NoteFragment extends Fragment implements NoteAdapter.NoteAdapterLis
     }
 
     private void deleteNote(final Note note) {
-        Observable.create(
+        NoteService.deleteNote(note)
-                new Observable.OnSubscribe<Void>() {
-                    @Override
-                    public void call(Subscriber<? super Void> subscriber) {
-                        if (!subscriber.isUnsubscribed()) {
-                            NoteService.deleteNote(note);
-                            subscriber.onNext(null);
-                            subscriber.onCompleted();
-                        }
-                    }
-                })
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(new Observer<Void>() {
@@ -248,46 +231,4 @@ public class NoteFragment extends Fragment implements NoteAdapter.NoteAdapterLis
             }
         }
     }
-
-    private static class DashDividerDecoration extends RecyclerView.ItemDecoration {
-
-        private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
-        private Path mPath;
-
-        public DashDividerDecoration(int color, int dashGap, int dashWidth, int height) {
-            mPaint.setColor(color);
-            mPaint.setStyle(Paint.Style.STROKE);
-            mPaint.setStrokeWidth(height);
-            mPaint.setPathEffect(new DashPathEffect(new float[]{dashWidth, dashGap}, 0));
-            mPath = new Path();
-        }
-
-        @Override
-        public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
-            super.onDraw(c, parent, state);
-            final int left = parent.getPaddingLeft();
-            final int right = parent.getWidth() - parent.getPaddingRight();
-            final int childCount = parent.getChildCount();
-            final int strokeWidth = (int) mPaint.getStrokeWidth();
-            for (int i = 0; i < childCount; i++) {
-                final View child = parent.getChildAt(i);
-                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
-                        .getLayoutParams();
-                final int top = child.getBottom() + params.bottomMargin +
-                        Math.round(ViewCompat.getTranslationY(child));
-                int offsetY = top + strokeWidth / 2;
-
-                mPath.reset();
-                mPath.moveTo(left, offsetY);
-                mPath.lineTo(right, offsetY);
-                c.drawPath(mPath, mPaint);
-            }
-        }
-
-        @Override
-        public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
-            super.getItemOffsets(outRect, view, parent, state);
-            outRect.set(0, 0, 0, (int) mPaint.getStrokeWidth());
-        }
-    }
 }

app/src/main/java/org/houxg/leamonax/widget/DashDividerDecoration.java

@@ -0,0 +1,53 @@
+package org.houxg.leamonax.widget;
+
+
+import android.graphics.Canvas;
+import android.graphics.DashPathEffect;
+import android.graphics.Paint;
+import android.graphics.Path;
+import android.graphics.Rect;
+import android.support.v13.view.ViewCompat;
+import android.support.v7.widget.RecyclerView;
+import android.view.View;
+
+public class DashDividerDecoration extends RecyclerView.ItemDecoration {
+
+    private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+    private Path mPath;
+
+    public DashDividerDecoration(int color, int dashGap, int dashWidth, int height) {
+        mPaint.setColor(color);
+        mPaint.setStyle(Paint.Style.STROKE);
+        mPaint.setStrokeWidth(height);
+        mPaint.setPathEffect(new DashPathEffect(new float[]{dashWidth, dashGap}, 0));
+        mPath = new Path();
+    }
+
+    @Override
+    public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
+        super.onDraw(c, parent, state);
+        final int left = parent.getPaddingLeft();
+        final int right = parent.getWidth() - parent.getPaddingRight();
+        final int childCount = parent.getChildCount();
+        final int strokeWidth = (int) mPaint.getStrokeWidth();
+        for (int i = 0; i < childCount; i++) {
+            final View child = parent.getChildAt(i);
+            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
+                    .getLayoutParams();
+            final int top = child.getBottom() + params.bottomMargin +
+                    Math.round(ViewCompat.getTranslationY(child));
+            int offsetY = top + strokeWidth / 2;
+
+            mPath.reset();
+            mPath.moveTo(left, offsetY);
+            mPath.lineTo(right, offsetY);
+            c.drawPath(mPath, mPaint);
+        }
+    }
+
+    @Override
+    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
+        super.getItemOffsets(outRect, view, parent, state);
+        outRect.set(0, 0, 0, (int) mPaint.getStrokeWidth());
+    }
+}

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

@@ -22,15 +22,14 @@
         android:orientation="horizontal">
 
         <TextView
-            android:id="@+id/tv_notebook"
+            android:id="@+id/tv_dirty"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginEnd="8dp"
             android:fontFamily="sans-serif-light"
-            android:textColor="@color/colorAccent"
+            android:text="@string/changed"
-            android:textSize="12sp"
+            android:textColor="#FFA726"
-            android:visibility="gone"
+            android:textSize="12sp" />
-            tools:text="Gradle" />
 
         <TextView
             android:id="@+id/tv_update_time"
@@ -42,14 +41,14 @@
             tools:text="9-18 23:23" />
 
         <TextView
-            android:id="@+id/tv_dirty"
+            android:id="@+id/tv_notebook"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginStart="8dp"
-            android:fontFamily="sans-serif-light"
+            android:fontFamily="sans-serif-medium"
-            android:text="@string/changed"
+            android:textColor="@color/hint_text_light"
-            android:textColor="#FFA726"
+            android:textSize="12sp"
-            android:textSize="12sp" />
+            tools:text="Gradle" />
 
     </LinearLayout>
 

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

@@ -7,6 +7,8 @@
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
         <item name="android:actionMenuTextColor">@color/menu_text</item>
+
+        <item name="android:homeAsUpIndicator">@drawable/ic_arrow_back_white</item>
     </style>
 
     <style name="SettingsStatus">