Implements #96, Change log / What's new popup on start

- Checks the last version from preferences with current
- Stores current version
- switches to about - changelog on version change

4 files changed, 37 insertions, 1 deletions

diff --git a/main/res/values/preference_keys.xml b/main/res/values/preference_keys.xml
index 906158d..f8b9230 100644
--- a/main/res/values/preference_keys.xml
+++ b/main/res/values/preference_keys.xml
@@ -171,4 +171,5 @@
     <string name="pref_ec_icons">ec_icons</string>
     <string name="pref_memory_dump">memory_dump</string>
     <string name="pref_appearance">pref_appearance</string>
+    <string name="pref_changelog_last_version">changelog_last_version</string>
 </resources>
diff --git a/main/src/cgeo/geocaching/AboutActivity.java b/main/src/cgeo/geocaching/AboutActivity.java
index 6cda723..f46a5a6 100644
--- a/main/src/cgeo/geocaching/AboutActivity.java
+++ b/main/src/cgeo/geocaching/AboutActivity.java
@@ -14,6 +14,7 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.apache.commons.lang3.tuple.Pair;
 
+import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
@@ -28,6 +29,8 @@ import java.util.Scanner;
 
 public class AboutActivity extends AbstractViewPagerActivity<AboutActivity.Page> {
 
+    private static final String EXTRA_ABOUT_STARTPAGE = "cgeo.geocaching.extra.about.startpage";
+
     class LicenseViewCreator extends AbstractCachingPageViewCreator<ScrollView> {
 
         @InjectView(R.id.license) protected TextView licenseLink;
@@ -142,7 +145,13 @@ public class AboutActivity extends AbstractViewPagerActivity<AboutActivity.Page>
     @Override
     public void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState, R.layout.viewpager_activity);
-        createViewPager(0, null);
+
+        int startPage = Page.VERSION.ordinal();
+        Bundle extras = getIntent().getExtras();
+        if (extras != null) {
+            startPage = extras.getInt(EXTRA_ABOUT_STARTPAGE, startPage);
+        }
+        createViewPager(startPage, null);
         reinitializeViewPager();
     }
 
@@ -210,4 +219,10 @@ public class AboutActivity extends AbstractViewPagerActivity<AboutActivity.Page>
         return result;
     }
 
+    public static void showChangeLog(Context fromActivity) {
+        final Intent intent = new Intent(fromActivity, AboutActivity.class);
+        intent.putExtra(EXTRA_ABOUT_STARTPAGE, Page.CHANGELOG.ordinal());
+        fromActivity.startActivity(intent);
+    }
+
 }
diff --git a/main/src/cgeo/geocaching/MainActivity.java b/main/src/cgeo/geocaching/MainActivity.java
index 473d870..8de27b0 100644
--- a/main/src/cgeo/geocaching/MainActivity.java
+++ b/main/src/cgeo/geocaching/MainActivity.java
@@ -213,6 +213,8 @@ public class MainActivity extends AbstractActionBarActivity {
         Log.i("Starting " + getPackageName() + ' ' + version + " a.k.a " + Version.getVersionName(this));
 
         init();
+
+        checkShowChangelog();
     }
 
     @Override
@@ -726,6 +728,16 @@ public class MainActivity extends AbstractActionBarActivity {
         }
     }
 
+    private void checkShowChangelog() {
+        int lastVersion = Settings.getLastChangelogVersion();
+        int version = Version.getVersionCode(this);
+        Settings.setLastChangelogVersion(version);
+        // don't show change log after new install...
+        if (lastVersion > 0 && version != lastVersion) {
+            AboutActivity.showChangeLog(this);
+        }
+    }
+
     /**
      * @param view
      *            unused here but needed since this method is referenced from XML layout
diff --git a/main/src/cgeo/geocaching/settings/Settings.java b/main/src/cgeo/geocaching/settings/Settings.java
index a527fc5..474558d 100644
--- a/main/src/cgeo/geocaching/settings/Settings.java
+++ b/main/src/cgeo/geocaching/settings/Settings.java
@@ -1008,4 +1008,12 @@ public class Settings {
         return getString(R.string.pref_ec_icons, "1");
     }
 
+    /* Store last version for the changelog display */
+    public static int getLastChangelogVersion() {
+        return getInt(R.string.pref_changelog_last_version, 0);
+    }
+
+    public static void setLastChangelogVersion(int version) {
+        putInt(R.string.pref_changelog_last_version, version);
+    }
 }