1、更改build variant，debugCompile，确保正式打包不包含debug类库

2、支持按照debug/release简单区分更多代码逻辑

app/src/debug/java/com/gh/gamecenter/Injection.java

@@ -0,0 +1,40 @@
+package com.gh.gamecenter;
+
+import android.app.Application;
+
+import com.facebook.stetho.okhttp3.StethoInterceptor;
+import com.squareup.leakcanary.LeakCanary;
+
+import okhttp3.OkHttpClient;
+import okhttp3.logging.HttpLoggingInterceptor;
+
+/**
+ * @author CsHeng
+ * @Date 03/09/2017
+ * @Time 4:34 PM
+ */
+
+public class Injection {
+
+    public static boolean appInit(Application application) {
+        if (LeakCanary.isInAnalyzerProcess(application)) {
+            // This process is dedicated to LeakCanary for heap analysis.
+            // You should not init your app in this process.
+            return false;
+        }
+        LeakCanary.install(application);
+        // Normal app init code...
+        return true;
+    }
+
+    public static OkHttpClient.Builder provideRetrofitBuilder() {
+        OkHttpClient.Builder builder = new OkHttpClient.Builder();
+        HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
+        interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
+        builder.addNetworkInterceptor(interceptor);
+        builder.addNetworkInterceptor(new StethoInterceptor());
+        return builder;
+    }
+
+
+}