Merge "commons" into the project root directory

app/src/main/java/fr/free/nrw/commons/WelcomeActivity.java

@@ -0,0 +1,68 @@
+package fr.free.nrw.commons;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.support.v4.view.PagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import com.viewpagerindicator.CirclePageIndicator;
+
+public class WelcomeActivity extends Activity {
+    static final int PAGE_WIKIPEDIA = 0,
+            PAGE_COPYRIGHT = 1,
+            PAGE_FINAL = 2;
+    static final int[] pageLayouts = new int[] {
+            R.layout.welcome_wikipedia,
+            R.layout.welcome_copyright,
+            R.layout.welcome_final
+    };
+
+    private ViewPager pager;
+    private Button yesButton;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_welcome);
+
+        pager = (ViewPager)findViewById(R.id.welcomePager);
+        pager.setAdapter(new PagerAdapter() {
+            @Override
+            public int getCount() {
+                return pageLayouts.length;
+            }
+
+            @Override
+            public boolean isViewFromObject(View view, Object o) {
+                return (view == o);
+            }
+
+            @Override
+            public Object instantiateItem(ViewGroup container, int position) {
+                View view = getLayoutInflater().inflate(pageLayouts[position], null);
+                container.addView(view);
+                if (position == PAGE_FINAL) {
+                    yesButton = (Button)view.findViewById(R.id.welcomeYesButton);
+                    yesButton.setOnClickListener(new View.OnClickListener() {
+                        public void onClick(View view) {
+                            finish();
+                        }
+                    });
+                }
+                return view;
+            }
+
+            @Override
+            public void destroyItem(ViewGroup container, int position, Object obj) {
+                yesButton = null;
+                container.removeView((View)obj);
+            }
+        });
+
+        CirclePageIndicator indicator = (CirclePageIndicator)findViewById(R.id.welcomePagerIndicator);
+        indicator.setViewPager(pager);
+    }
+}