Allow disabling left/right swipe on the graphs

Fixes #860
 Added preference to control this option
 Swiping down will still toggle a sync of the data from the device (if connected) in any case

CHANGELOG.md

@@ -1,5 +1,8 @@
 ### Changelog
 
+#### Version NEXT
+* Charts: added preference to disable swiping charts left/right
+
 #### Version 0.22.1
 * Mi Band 2: Fix being detected as Amazfit Bip which lead to various problems especially on newly paired devices
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/charts/ChartsActivity.java

@@ -29,8 +29,10 @@ import android.support.v4.app.FragmentStatePagerAdapter;
 import android.support.v4.content.LocalBroadcastManager;
 import android.support.v4.view.ViewPager;
 import android.support.v4.widget.SwipeRefreshLayout;
+import android.util.AttributeSet;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
@@ -66,7 +68,7 @@ public class ChartsActivity extends AbstractGBFragmentActivity implements Charts
     private Date mStartDate;
     private Date mEndDate;
     private SwipeRefreshLayout swipeLayout;
-    private ViewPager viewPager;
+    private NonSwipeableViewPager viewPager;
 
     LimitedQueue mActivityAmountCache = new LimitedQueue(60);
 
@@ -153,7 +155,7 @@ public class ChartsActivity extends AbstractGBFragmentActivity implements Charts
         enableSwipeRefresh(true);
 
         // Set up the ViewPager with the sections adapter.
-        viewPager = (ViewPager) findViewById(R.id.charts_pager);
+        viewPager = (NonSwipeableViewPager) findViewById(R.id.charts_pager);
         viewPager.setAdapter(getPagerAdapter());
         viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
             @Override
@@ -365,3 +367,26 @@ public class ChartsActivity extends AbstractGBFragmentActivity implements Charts
         }
     }
 }
+
+class NonSwipeableViewPager extends ViewPager {
+
+    public NonSwipeableViewPager(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        if (GBApplication.getPrefs().getBoolean("charts_allow_swipe", true)) {
+            return super.onInterceptTouchEvent(ev);
+        }
+        return false;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent ev) {
+        if (GBApplication.getPrefs().getBoolean("charts_allow_swipe", true)) {
+            return super.onTouchEvent(ev);
+        }
+        return false;
+    }
+}

app/src/main/res/layout/activity_charts.xml

@@ -12,7 +12,7 @@
         android:layout_height="match_parent"
         android:orientation="vertical">
 
-        <android.support.v4.view.ViewPager
+        <nodomain.freeyourgadget.gadgetbridge.activities.charts.NonSwipeableViewPager
             android:id="@+id/charts_pager"
             android:layout_width="match_parent"
             android:layout_height="0dp"
@@ -25,7 +25,7 @@
                 android:layout_height="wrap_content"
                 android:layout_gravity="top"
                 app:tabMode="scrollable" />
-        </android.support.v4.view.ViewPager>
+        </nodomain.freeyourgadget.gadgetbridge.activities.charts.NonSwipeableViewPager>
 
         <LinearLayout
             android:id="@+id/charts_date_bar"

app/src/main/res/values/strings.xml

@@ -70,6 +70,7 @@
     <string name="pref_title_general_autocreonnect">Reconnect automatically</string>
     <string name="pref_title_audo_player">Preferred Audioplayer</string>
     <string name="pref_default">Default</string>
+    <string name="pref_title_charts_swipe">Enable left/right swipe in the charts activity</string>
 
     <string name="pref_header_datetime">Date and Time</string>
     <string name="pref_title_datetime_syctimeonconnect">Sync time</string>

app/src/main/res/xml/changelog_master.xml

@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <changelog>
+    <release version="next">
+        <change>Charts: added preference to disable swiping charts left/right</change>
+    </release>
     <release version="0.22.1" versioncode="109">
         <change>Mi Band 2: Fix being detected as Amazfit Bip which lead to various problems especially on newly paired devices</change>
     </release>

app/src/main/res/xml/preferences.xml

@@ -92,6 +92,10 @@
                 android:maxLength="2"
                 android:title="@string/activity_prefs_sleep_duration" />
         </PreferenceScreen>
+        <CheckBoxPreference
+            android:defaultValue="true"
+            android:key="charts_allow_swipe"
+            android:title="@string/pref_title_charts_swipe" />
     </PreferenceCategory>
     <PreferenceCategory
         android:key="pref_key_datetime"