comply with lint checks

Author: Cliffus

app/src/main/AndroidManifest.xml

@@ -13,22 +13,28 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<manifest package="at.blogc.android.views"
-          xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest
+    xmlns:tools="http://schemas.android.com/tools"
+    package="at.blogc.android.views"
+    xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme">
+        android:theme="@style/AppTheme"
+        tools:ignore="AllowBackup">
+
         <activity android:name="at.blogc.android.activities.MainActivity">
+
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
-
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
+
         </activity>
+
     </application>
 
 </manifest>

app/src/main/java/at/blogc/android/activities/MainActivity.java

@@ -29,8 +29,9 @@ public class MainActivity extends AppCompatActivity
 {
     private static final String TAG = "ExpandableTextView";
 
+    @SuppressWarnings("ConstantConditions")
     @Override
-    protected void onCreate(Bundle savedInstanceState)
+    protected void onCreate(final Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);
         this.setContentView(R.layout.activity_main);
@@ -51,6 +52,7 @@ protected void onCreate(Bundle savedInstanceState)
         // toggle the ExpandableTextView
         buttonToggle.setOnClickListener(new View.OnClickListener()
         {
+            @SuppressWarnings("ConstantConditions")
             @Override
             public void onClick(final View v)
             {

expandabletextview/src/main/java/at/blogc/android/views/ExpandableTextView.java

@@ -49,17 +49,17 @@ public class ExpandableTextView extends TextView
     private boolean expanded;
     private int originalHeight;
 
-    public ExpandableTextView(Context context)
+    public ExpandableTextView(final Context context)
     {
         this(context, null);
     }
 
-    public ExpandableTextView(Context context, AttributeSet attrs)
+    public ExpandableTextView(final Context context, final AttributeSet attrs)
     {
         this(context, attrs, 0);
     }
 
-    public ExpandableTextView(Context context, AttributeSet attrs, int defStyle)
+    public ExpandableTextView(final Context context, final AttributeSet attrs, final int defStyle)
     {
         super(context, attrs, defStyle);