1、处理viewpager fragment

2、将MainActivity管理的逻辑移到MainFragment，MessageFragment，NewsFragment同理，
3、处理首页ViewPager等手动计算size的问题
4、添加一堆ScaleXXXView，可以用来设定View本身的比例大小

TODO
1、将DownloadManagerActivity也处理成Fragment
2、其他界面也慢慢处理成Fragment

app/src/main/java/com/gh/base/fragment/BaseFragment.java

@@ -0,0 +1,139 @@
+package com.gh.base.fragment;
+
+import android.os.Bundle;
+import android.support.annotation.LayoutRes;
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Toast;
+
+import com.gh.base.OnRequestCallBackListener;
+import com.gh.common.util.EntranceUtils;
+import com.gh.common.util.RuntimeUtils;
+import com.gh.gamecenter.eventbus.EBMiPush;
+
+import org.greenrobot.eventbus.EventBus;
+import org.greenrobot.eventbus.Subscribe;
+import org.greenrobot.eventbus.ThreadMode;
+
+import butterknife.ButterKnife;
+
+/**
+ * Created by LGT on 2016/9/4.
+ * Fragment 基类
+ */
+public abstract class BaseFragment extends Fragment implements OnRequestCallBackListener, View.OnClickListener {
+
+    // TODO private view
+    protected View view;
+
+    protected boolean isEverPause;
+
+    protected String mEntrance;
+
+    @LayoutRes
+    protected abstract int getLayoutId();
+
+    /**
+     * 责任链，谁处理了就返回true，否则返回super.handleOnClick(View view)
+     *
+     * @return
+     */
+    protected boolean handleOnClick(View view) {
+        return true;
+    }
+
+    @Override
+    public void onClick(View v) {
+        handleOnClick(v);
+    }
+
+    protected void initView(View view) {
+    }
+
+    protected void postRunnable(Runnable runnable) {
+//        if (getView() != null) {
+//            getView().post(runnable);
+//        }
+        RuntimeUtils.getInstance().runOnUiThread(runnable);
+    }
+
+    protected void postDelayedRunnable(Runnable runnable, long delayMillis) {
+        RuntimeUtils.getInstance().runOnUiThread(runnable, delayMillis);
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mEntrance = getActivity().getIntent().getStringExtra(EntranceUtils.KEY_ENTRANCE);
+        isEverPause = false;
+        EventBus.getDefault().register(this);
+        view = View.inflate(getContext(), getLayoutId(), null);
+        ButterKnife.bind(this, view);
+        initView(view);
+    }
+
+    //TODO 尴尬，必须的有subscribe才能register
+    @Subscribe(threadMode = ThreadMode.BACKGROUND)
+    public void onDummyEvent(EBMiPush push) {
+        //
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        if (container != null) {
+            container.removeView(view);
+        }
+        return view;
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        isEverPause = false;
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        isEverPause = true;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        EventBus.getDefault().unregister(this);
+    }
+
+    public void toast(String msg) {
+        Toast.makeText(getContext(), msg, Toast.LENGTH_SHORT).show();
+    }
+
+    public boolean isEverPause() {
+        return isEverPause;
+    }
+
+    @Override
+    public void loadDone() {
+
+    }
+
+    @Override
+    public void loadDone(Object obj) {
+
+    }
+
+    @Override
+    public void loadError() {
+
+    }
+
+    @Override
+    public void loadEmpty() {
+
+    }
+
+}