增加mpres相关的定义和函数

common/src/main/java/com/xypower/common/MicroPhotoContext.java

@@ -30,6 +30,7 @@ public class MicroPhotoContext {
 
     public static final String PACKAGE_NAME_MPAPP = "com.xypower.mpapp";
     public static final String PACKAGE_NAME_MPMASTER = "com.xypower.mpmaster";
+    public static final String PACKAGE_NAME_MPRES = "com.xypower.mpres";
 
     public static final String SERVICE_NAME_MPSERVICE = PACKAGE_NAME_MPAPP + ".MicroPhotoService";
 
@@ -231,6 +232,22 @@ public class MicroPhotoContext {
         return path;
     }
 
+    public static String buildMpResAppDir(Context contxt) {
+
+        String path = Environment.getExternalStorageDirectory().getAbsolutePath();
+        if (!path.endsWith(File.separator)) {
+            path += File.separator;
+        }
+
+        path += PACKAGE_NAME_MPRES + File.separator;
+        File pathFile = new File(path);
+        if (!pathFile.exists() && !pathFile.mkdirs()) {
+            return null;
+        }
+
+        return path;
+    }
+
     public static boolean hasMpAppConfig(Context context) {
         boolean existed = true;
         String appPath = MicroPhotoContext.buildMpAppDir(context);