version:1.2

fix:优化卡顿
update:基本对接完成，增加指示器放大

app/src/main/java/com/uiui/zyos/utils/FileUtil.java

@@ -0,0 +1,54 @@
+package com.uiui.zyos.utils;
+
+import android.text.TextUtils;
+
+import java.util.HashSet;
+
+public class FileUtil {
+    public static String getFileType(String url) {
+        if (url.indexOf("/") == -1) {
+            return url.substring(url.indexOf("."), url.length());
+        } else {
+            String fileName = url.substring(url.lastIndexOf("/"));
+            return fileName.substring(fileName.indexOf("."), fileName.length());
+        }
+    }
+
+    private static HashSet<String> videoFormat = new HashSet<String>() {{
+        this.add(".mp4");
+        this.add(".avi");
+        this.add(".nkv");
+        this.add(".flv");
+    }};
+    private static HashSet<String> pictureFormat = new HashSet<String>() {{
+        this.add(".png");
+        this.add(".jpg");
+        this.add(".jpeg");
+        this.add(".bmp");
+    }};
+
+    public static boolean isVideoFile(String fileName) {
+        if (TextUtils.isEmpty(fileName)) {
+            return false;
+        } else {
+            if (!fileName.startsWith(".")) {
+                return videoFormat.contains(getFileType(fileName));
+            } else {
+                return videoFormat.contains(fileName);
+            }
+        }
+    }
+
+    public static boolean isPictureFile(String fileName) {
+        if (TextUtils.isEmpty(fileName)) {
+            return false;
+        } else {
+            if (!fileName.startsWith(".")) {
+                return pictureFormat.contains(getFileType(fileName));
+            } else {
+                return pictureFormat.contains(fileName);
+            }
+        }
+    }
+
+}