update Butterknife to 8.0.1

app/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'com.android.application'
+apply plugin: 'android-apt'
 
 android {
     compileSdkVersion 23
@@ -29,7 +30,9 @@ dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
     compile 'com.android.support:appcompat-v7:23.3.0'
-    compile 'com.jakewharton:butterknife:7.0.1'
+    compile 'com.jakewharton:butterknife:8.0.1'
+
+    apt 'com.jakewharton:butterknife-compiler:8.0.1'
 }
 
 def Properties props = new Properties()

app/proguard-rules.pro

@@ -15,16 +15,3 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
-
-# Butterknife
--keep class butterknife.** { *; }
--dontwarn butterknife.internal.**
--keep class **$$ViewBinder { *; }
-
--keepclasseswithmembernames class * {
-    @butterknife.* <fields>;
-}
-
--keepclasseswithmembernames class * {
-    @butterknife.* <methods>;
-}

app/src/main/java/com/simplemobiletools/camera/MainActivity.java

@@ -11,14 +11,14 @@ import android.view.WindowManager;
 import android.widget.ImageView;
 import android.widget.RelativeLayout;
 
-import butterknife.Bind;
+import butterknife.BindView;
 import butterknife.ButterKnife;
 import butterknife.OnClick;
 
 public class MainActivity extends AppCompatActivity {
-    @Bind(R.id.viewHolder) RelativeLayout viewHolder;
-    @Bind(R.id.toggle_camera) View toggleCameraBtn;
-    @Bind(R.id.toggle_flash) ImageView toggleFlashBtn;
+    @BindView(R.id.viewHolder) RelativeLayout viewHolder;
+    @BindView(R.id.toggle_camera) View toggleCameraBtn;
+    @BindView(R.id.toggle_flash) ImageView toggleFlashBtn;
 
     private Preview preview;
     private int currCamera;

build.gradle

@@ -6,6 +6,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:2.1.0'
+        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files