Add intro wizard for application

app/src/main/java/protect/card_locker/IntroActivity.java

@@ -0,0 +1,43 @@
+package protect.card_locker;
+
+import android.os.Bundle;
+import android.support.annotation.LayoutRes;
+import android.support.v4.app.Fragment;
+
+import com.github.paolorotolo.appintro.AppIntro;
+
+
+public class IntroActivity extends AppIntro
+{
+    @Override
+    public void init(Bundle savedInstanceState)
+    {
+        addIntroSlide(R.layout.intro1_layout);
+        addIntroSlide(R.layout.intro2_layout);
+        addIntroSlide(R.layout.intro3_layout);
+        addIntroSlide(R.layout.intro4_layout);
+        addIntroSlide(R.layout.intro5_layout);
+        addIntroSlide(R.layout.intro6_layout);
+    }
+
+    private void addIntroSlide(@LayoutRes int layout)
+    {
+        Fragment slide = new IntroSlide();
+        Bundle args = new Bundle();
+        args.putInt("layout", layout);
+        slide.setArguments(args);
+        addSlide(slide);
+    }
+
+    @Override
+    public void onSkipPressed(Fragment fragment) {
+        finish();
+    }
+
+    @Override
+    public void onDonePressed(Fragment fragment) {
+        finish();
+    }
+}
+
+

app/src/main/java/protect/card_locker/IntroSlide.java

@@ -0,0 +1,25 @@
+package protect.card_locker;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+public class IntroSlide extends Fragment
+{
+    int _layout;
+
+    @Override
+    public void setArguments(Bundle bundle)
+    {
+        _layout = bundle.getInt("layout");
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
+    {
+        View v = inflater.inflate(_layout, container, false);
+        return v;
+    }
+}

app/src/main/java/protect/card_locker/MainActivity.java

@@ -4,6 +4,7 @@ import android.content.ClipData;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.ClipboardManager;
+import android.content.SharedPreferences;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.database.Cursor;
@@ -41,6 +42,12 @@ public class MainActivity extends AppCompatActivity
         setSupportActionBar(toolbar);
 
         updateLoyaltyCardList();
+
+        SharedPreferences prefs = getSharedPreferences("protect.card_locker", MODE_PRIVATE);
+        if (prefs.getBoolean("firstrun", true)) {
+            startIntro();
+            prefs.edit().putBoolean("firstrun", false).commit();
+        }
     }
 
     @Override
@@ -152,6 +159,12 @@ public class MainActivity extends AppCompatActivity
             return true;
         }
 
+        if(id == R.id.action_intro)
+        {
+            startIntro();
+            return true;
+        }
+
         if(id == R.id.action_about)
         {
             displayAboutDialog();
@@ -168,7 +181,8 @@ public class MainActivity extends AppCompatActivity
             "Commons CSV", "https://commons.apache.org/proper/commons-csv/",
             "Guava", "https://github.com/google/guava",
             "ZXing", "https://github.com/zxing/zxing",
-            "ZXing Android Embedded", "https://github.com/journeyapps/zxing-android-embedded"
+            "ZXing Android Embedded", "https://github.com/journeyapps/zxing-android-embedded",
+            "AppIntro", "https://github.com/apl-devs/AppIntro"
         );
 
         StringBuilder libs = new StringBuilder().append("<ul>");
@@ -230,4 +244,10 @@ public class MainActivity extends AppCompatActivity
             })
             .show();
     }
+
+    private void startIntro()
+    {
+        Intent intent = new Intent(this, IntroActivity.class);
+        startActivity(intent);
+    }
 }