bug fixes in remove pages fragment

Author: Swati4star

app/build.gradle

@@ -10,8 +10,8 @@ android {
         minSdkVersion 21
         multiDexEnabled true
         targetSdkVersion 28
-        versionCode 79
-        versionName "8.5.2"
+        versionCode 80
+        versionName "8.5.3"
     }
     buildTypes {
         release {

app/src/main/assets/whatsnew.json

@@ -1,21 +1,31 @@
 {
   "data": [
+
     {
-      "title": "Modify Existing PDF",
-      "content": "Add images to existing PDF",
-      "icon": "ic_add_black_24dp"
-    },
-    {
-      "title": "Rearrange images while creating PDF",
-      "content": "Now, you can easily sort images while creating PDF using images",
-      "icon": "ic_text_format_black_24dp"
+      "title": "Reorder PDF pages",
+      "content": "Fixed errors in Reorder and Remove PDF pages.",
+      "icon": ""
     }
+
   ],
   "old_data": {
     //paste old data here
     "version_code": [
     ],
 
+    "79" : [
+      {
+        "title": "Modify Existing PDF",
+        "content": "Add images to existing PDF",
+        "icon": "ic_add_black_24dp"
+      },
+      {
+        "title": "Rearrange images while creating PDF",
+        "content": "Now, you can easily sort images while creating PDF using images",
+        "icon": "ic_text_format_black_24dp"
+      }
+    ],
+
     "74" : [
       {
         "title": "Merge PDF",

app/src/main/java/swati4star/createpdf/activity/RearrangePdfPages.java

@@ -13,6 +13,8 @@
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.Toolbar;
 import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
 
 import com.afollestad.materialdialogs.MaterialDialog;
 
@@ -34,6 +36,8 @@ public class RearrangePdfPages extends AppCompatActivity implements RearrangePdf
 
     @BindView(R.id.recyclerView)
     RecyclerView mRecyclerView;
+    @BindView(R.id.sort)
+    Button sortButton;
 
     public static ArrayList<Bitmap> mImages;
     private RearrangePdfAdapter mRearrangeImagesAdapter;
@@ -49,9 +53,14 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
 
         Toolbar toolbar = findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
-        Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
         ButterKnife.bind(this);
-        if (mImages == null || mImages.size() < 1)
+
+        mSequence = new ArrayList<>();
+        Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
+        sortButton.setVisibility(View.GONE);
+        if (mImages == null || mImages.size() < 1) {
+            finish();
+        } else
             initRecyclerView(mImages);
     }
 

app/src/main/java/swati4star/createpdf/util/FileUtils.java

@@ -319,6 +319,9 @@ public static String getFileDirectoryPath(String path) {
      */
     public static String saveImage(String filename, Bitmap finalBitmap) {
 
+        if (finalBitmap == null)
+            return null;
+
         if (checkIfBitmapIsWhite(finalBitmap))
             return null;
 
@@ -346,6 +349,10 @@ public static String saveImage(String filename, Bitmap finalBitmap) {
      * @return - true, if bitmap is all white
      */
     private static boolean checkIfBitmapIsWhite(Bitmap bitmap) {
+
+        if (bitmap == null)
+            return true;
+
         int w = bitmap.getWidth();
         int h = bitmap.getHeight();
         for (int i =  0; i < w; i++) {

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

@@ -25,7 +25,7 @@
         <Button
             android:id="@+id/sort"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+            android:layout_height="45dp"
             android:layout_marginStart="10dp"
             android:layout_marginEnd="10dp"
             android:background="@drawable/cornered_edges"
@@ -39,7 +39,7 @@
     <android.support.v7.widget.RecyclerView
         android:id="@+id/recyclerView"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content"
         android:orientation="vertical" />
 
 </LinearLayout>