1、升级support v4 系列到24.1.0

2、增加混淆配置，release默认启用

app/src/main/java/com/gh/base/GHActivityLifecycleCallbacksImpl.java

@@ -0,0 +1,54 @@
+package com.gh.base;
+
+import android.app.Activity;
+import android.app.Application.ActivityLifecycleCallbacks;
+import android.os.Bundle;
+
+/**
+ * 1、写点针对生命周期的统计代码
+ * 2、写点通用的逻辑
+ * 3、接口解耦
+ *
+ * @author CsHeng
+ * @Date 09/05/2017
+ * @Time 6:22 PM
+ */
+public class GHActivityLifecycleCallbacksImpl implements ActivityLifecycleCallbacks {
+
+
+    @Override
+    public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
+
+    }
+
+    @Override
+    public void onActivityStarted(Activity activity) {
+
+    }
+
+    @Override
+    public void onActivityResumed(Activity activity) {
+
+    }
+
+    @Override
+    public void onActivityPaused(Activity activity) {
+
+    }
+
+    @Override
+    public void onActivityStopped(Activity activity) {
+
+    }
+
+    @Override
+    public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
+
+    }
+
+    @Override
+    public void onActivityDestroyed(Activity activity) {
+
+    }
+
+}