1、将所有Activity统一到一个base(主题AppCompatTheme)，layout和contentView统一处理

2、MainActivity tab切换方式的重构
3、下一步更改toolbar实现方式，然后再是尽量用fragment替换

app/src/main/java/com/gh/gamecenter/DownloadManagerActivity.java

@@ -11,7 +11,7 @@ import android.view.View.OnClickListener;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 import butterknife.BindView;
-import com.gh.base.BaseFragmentActivity;
+import com.gh.base.BaseActivity;
 import com.gh.common.util.DisplayUtils;
 import com.gh.download.DownloadManager;
 import com.gh.gamecenter.adapter.FragmentAdapter;
@@ -28,8 +28,7 @@ import java.util.List;
  *
  * @author 黄壮华
  */
-public class DownloadManagerActivity extends BaseFragmentActivity implements
-        OnClickListener, OnPageChangeListener {
+public class DownloadManagerActivity extends BaseActivity implements OnClickListener, OnPageChangeListener {
 
     @BindView(R.id.downloadmanager_viewPager)
     ViewPager downloadmanager_viewPager;
@@ -67,12 +66,16 @@ public class DownloadManagerActivity extends BaseFragmentActivity implements
         outState.putInt("CurrentItem", downloadmanager_viewPager.getCurrentItem());
     }
 
+    @Override
+    protected int getLayoutId() {
+        return R.layout.activity_downloadmanager;
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        View contentView = View.inflate(this, R.layout.activity_downloadmanager, null);
-        init(contentView, "下载管理");
+        init("下载管理");
 
         downloadmanager_ll_download.setOnClickListener(this);
         downloadmanager_ll_update.setOnClickListener(this);