Change mangas from categories (needs testing)

2015-12-29 01:00:05 +01:00
parent 3f1f9ea9f2
commit 1360a90bf9
15 changed files with 245 additions and 69 deletions
@@ -0,0 +1,48 @@
+package eu.kanade.mangafeed.ui.base.adapter;
+
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentStatePagerAdapter;
+import android.util.SparseArray;
+import android.view.ViewGroup;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class SmartFragmentStatePagerAdapter extends FragmentStatePagerAdapter {
+    // Sparse array to keep track of registered fragments in memory
+    private SparseArray<Fragment> registeredFragments = new SparseArray<Fragment>();
+
+    public SmartFragmentStatePagerAdapter(FragmentManager fragmentManager) {
+        super(fragmentManager);
+    }
+
+    // Register the fragment when the item is instantiated
+    @Override
+    public Object instantiateItem(ViewGroup container, int position) {
+        Fragment fragment = (Fragment) super.instantiateItem(container, position);
+        registeredFragments.put(position, fragment);
+        return fragment;
+    }
+
+    // Unregister when the item is inactive
+    @Override
+    public void destroyItem(ViewGroup container, int position, Object object) {
+        registeredFragments.remove(position);
+        super.destroyItem(container, position, object);
+    }
+
+    // Returns the fragment for the position (if instantiated)
+    public Fragment getRegisteredFragment(int position) {
+        return registeredFragments.get(position);
+    }
+
+    public List<Fragment> getRegisteredFragments() {
+        ArrayList<Fragment> fragments = new ArrayList<>();
+        for (int i = 0; i < registeredFragments.size(); i++) {
+            fragments.add(registeredFragments.valueAt(i));
+        }
+        return fragments;
+    }
+
+}