[android] async rendering

- introduces GLSurfaceView
- introduces Orchestration thread
- renders on the gl thread

1 files changed, 27 insertions, 0 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/Compare.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/Compare.java
new file mode 100644
index 0000000000..c7d7a13a3d
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/Compare.java
@@ -0,0 +1,27 @@
+package com.mapbox.mapboxsdk.utils;
+
+/**
+ * Comparisons from std sdk, which aren't available in API level <= 15
+ */
+public class Compare {
+
+  /**
+   * @see Integer#compare(int, int)
+   * @param x left side
+   * @param y right side
+   * @return std compare value
+   */
+  public static int compare(int x, int y) {
+    return (x < y) ? -1 : ((x == y) ? 0 : 1);
+  }
+
+  /**
+   * @see Boolean#compare(boolean, boolean)
+   * @param x left side
+   * @param y right side
+   * @return std compare value
+   */
+  public static int compare(boolean x, boolean y) {
+    return (x == y) ? 0 : (x ? 1 : -1);
+  }
+}