Added Script file chooser. Fixed the issue that background image setting not working

common/src/main/java/com/stardust/pio/PFile.java

@@ -208,6 +208,7 @@ public class PFile {
             a = -1;
         if (b < 0)
             b = fileName.length();
+        // FIXME: 2017/4/3 StringOutOfBoundsException
         fileName = fileName.substring(a + 1, b);
         return fileName;
     }

common/src/main/java/com/stardust/util/FileUtils.java

@@ -34,8 +34,10 @@ public class FileUtils {
                 if (cursor.moveToFirst()) {
                     return cursor.getString(column_index);
                 }
-            } catch (Exception e) {
-                // Eat it
+            } catch (Exception ignored) {
+            } finally {
+                if (cursor != null)
+                    cursor.close();
             }
         } else if ("file".equalsIgnoreCase(uri.getScheme())) {
             return uri.getPath();

common/src/main/java/com/stardust/util/SdkVersionUtil.java

@@ -0,0 +1,40 @@
+package com.stardust.util;
+
+import android.os.Build;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+
+/**
+ * Created by Stardust on 2017/4/3.
+ */
+
+public class SdkVersionUtil {
+
+    private static final String[] SDK_VERSIONS = {
+            "1.0", "1.1", "1.5", "1.6", "2.0", "2.0.1", "2.1.x", "2.2.x",
+            "2.3", "2.3.3", "3.0.x", "3.1.x", "3.2", "4.0", "4.0.3", "4.1",
+            "4.2", "4.3", "4.4.2", "4.4W", "5.0", "5.1", "6.0", "7.0", "7.1",
+            "8.0"
+    };
+
+    public static String sdkIntToString(int i) {
+        if (i > 26) {
+            return "Unknown";
+        }
+        return SDK_VERSIONS[i - 1];
+    }
+
+    public static final class TestSuite {
+
+        @Test
+        public void test() {
+            assertEquals("5.0", sdkIntToString(21));
+            assertEquals("8.0", sdkIntToString(26));
+            assertEquals("Unknown", sdkIntToString(27));
+        }
+
+    }
+}