fix 可能存在的内存优化

UPDATE_VERSION.md

 ## 下方个版本说明，可以当做简单的wiki使用~，效果可参考DEMO。
 
+### 1.6.1(2017-03-20)
+* setSpeed接口修改为支持播放中设置
+
 ### 1.6.0 (2017-02-19)
 * update ijkplayer to 0.7.7.1。
 * 增加了弹幕demo，主要演示如何快速集成弹幕功能。

app/src/main/java/com/example/gsyvideoplayer/DetailPlayer.java

@@ -55,6 +55,7 @@ public class DetailPlayer extends AppCompatActivity {
         ButterKnife.bind(this);
 
         String url = "http://baobab.wdjcdn.com/14564977406580.mp4";
+        //String url = "http://hls.ciguang.tv/hdtv/video.m3u8";
         //String url = "https://res.exexm.com/cw_145225549855002";
         detailPlayer.setUp(url, true, null, "测试视频");
 

gsyVideoPlayer/src/main/java/com/shuyu/gsyvideoplayer/video/StandardGSYVideoPlayer.java

@@ -49,7 +49,7 @@ import static com.shuyu.gsyvideoplayer.utils.CommonUtil.hideNavKey;
 public class StandardGSYVideoPlayer extends GSYVideoPlayer {
 
 
-    protected Timer DISSMISS_CONTROL_VIEW_TIMER;
+    protected Timer mDismissControlViewTimer;
 
     protected ProgressBar mBottomProgressBar;
 
@@ -218,6 +218,7 @@ public class StandardGSYVideoPlayer extends GSYVideoPlayer {
         switch (mCurrentState) {
             case CURRENT_STATE_NORMAL:
                 changeUiToNormal();
+                cancelDismissControlViewTimer();
                 break;
             case CURRENT_STATE_PREPAREING:
                 changeUiToPrepareingShow();
@@ -879,17 +880,19 @@ public class StandardGSYVideoPlayer extends GSYVideoPlayer {
 
     private void startDismissControlViewTimer() {
         cancelDismissControlViewTimer();
-        DISSMISS_CONTROL_VIEW_TIMER = new Timer();
+        mDismissControlViewTimer = new Timer();
         mDismissControlViewTimerTask = new DismissControlViewTimerTask();
-        DISSMISS_CONTROL_VIEW_TIMER.schedule(mDismissControlViewTimerTask, 2500);
+        mDismissControlViewTimer.schedule(mDismissControlViewTimerTask, 2500);
     }
 
     private void cancelDismissControlViewTimer() {
-        if (DISSMISS_CONTROL_VIEW_TIMER != null) {
-            DISSMISS_CONTROL_VIEW_TIMER.cancel();
+        if (mDismissControlViewTimer != null) {
+            mDismissControlViewTimer.cancel();
+            mDismissControlViewTimer = null;
         }
         if (mDismissControlViewTimerTask != null) {
             mDismissControlViewTimerTask.cancel();
+            mDismissControlViewTimerTask = null;
         }
 
     }