[android] - use FileSource pause and resume when foregrounding/backgrounding app

1 files changed, 23 insertions, 1 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/storage/FileSource.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/storage/FileSource.java
index a968cdf192..41dc449b50 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/storage/FileSource.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/storage/FileSource.java
@@ -72,7 +72,7 @@ public class FileSource {
         MapboxConstants.KEY_META_DATA_SET_STORAGE_EXTERNAL,
         MapboxConstants.DEFAULT_SET_STORAGE_EXTERNAL);
     } catch (PackageManager.NameNotFoundException exception) {
-      Timber.e(exception,"Failed to read the package metadata: ");
+      Timber.e(exception, "Failed to read the package metadata: ");
     } catch (Exception exception) {
       Timber.e(exception, "Failed to read the storage key: ");
     }
@@ -119,17 +119,39 @@ public class FileSource {
   }
 
   private long nativePtr;
+  private long activeCounter;
+  private boolean wasPaused;
 
   private FileSource(String cachePath, AssetManager assetManager) {
     initialize(Mapbox.getAccessToken(), cachePath, assetManager);
   }
 
+  public void activate() {
+    activeCounter++;
+    if (activeCounter == 1 && wasPaused) {
+      wasPaused = false;
+      resume();
+    }
+  }
+
+  public void deactivate() {
+    activeCounter--;
+    if (activeCounter == 0) {
+      wasPaused = true;
+      pause();
+    }
+  }
+
   public native void setAccessToken(@NonNull String accessToken);
 
   public native String getAccessToken();
 
   public native void setApiBaseUrl(String baseUrl);
 
+  private native void resume();
+
+  private native void pause();
+
   /**
    * Sets a callback for transforming URLs requested from the internet
    * <p>