fix npe when adapter is not yet set

README.md

@@ -7,7 +7,7 @@ Usage
 -----
 
 1. Add jcenter() to repositories block in your gradle file.
-2. Add `implementation 'com.shuhart.bubblepagerindicator:bubblepagerindicator:1.1.0'` to your dependencies.
+2. Add `implementation 'com.shuhart.bubblepagerindicator:bubblepagerindicator:1.1.1'` to your dependencies.
 3. Add `BubblePageIndicator` into your layouts or view hierarchy:
 
 ```xml

bubblepagerindicator/build.gradle

@@ -15,7 +15,7 @@ ext {
     siteUrl = 'https://github.com/shuhart/BubblePagerIndicator'
     gitUrl = 'https://github.com/shuhart/BubblePagerIndicator.git'
 
-    libraryVersion = '1.1.0'
+    libraryVersion = '1.1.1'
 
     developerId = 'shuhart'
     developerName = 'Redrick Shuhart'

bubblepagerindicator/src/main/java/com/shuhart/bubblepagerindicator/BubblePageIndicator.java

@@ -182,7 +182,7 @@ public float getRadius() {
 
     @Override
     protected int getCount() {
-        return viewPager.getAdapter().getCount();
+        return viewPager.getAdapter() == null ? 0 : viewPager.getAdapter().getCount();
     }
 
     @Override

sample/src/main/java/com/shuhart/bubblepagerindicator/sample/BlankActivity.java

@@ -4,7 +4,6 @@
 import android.support.design.widget.FloatingActionButton;
 import android.support.design.widget.Snackbar;
 import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
 import android.view.View;
 
 public class BlankActivity extends AppCompatActivity {
@@ -13,8 +12,6 @@ public class BlankActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_blank);
-        Toolbar toolbar = findViewById(R.id.toolbar);
-        setSupportActionBar(toolbar);
 
         FloatingActionButton fab = findViewById(R.id.fab);
         fab.setOnClickListener(new View.OnClickListener() {