负一屏内存优化

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/a396604593/article/details/82804496

负一屏内存优化

负一屏属于launcher的一个左屏，实际上是一个viewGroup。负一屏在launcher编辑模式下有一个开关复制控制负一屏的显示和不显示。

当负一屏不显示时，我们希望能够释放掉负一屏所有的资源和内存占用。但是这时候launcher（activity）并没有停止运行（没有onDestory）。所以许多监听和对象都需要手动释放。

Studio自带的内存分析工具：http://www.cnblogs.com/xgjblog/p/6084388.html

负一屏内存释放相关：

负一屏最外层的OnDestory

public void onDestroy() {
        Runnable r = new Runnable() {
            @Override
            public void run() {
                LongArrayMap<Service> removedService = new LongArrayMap<>();
                for (Service service : sCreateServices) {
                    removedService.put(service.type, service);
                }
                for (Service service : removedService) {
                    service.onDestroy();
                    service.destoryCustomPageManager();
                }
                mStringSort = "";
                removedService.clear();
                sCreateServices.clear();
                sIntelligenceServices.clear();
                sAllService.clear();
                sXyService.clear();
                mSortList.clear();
                mCacheCardList.clear();
                sCreateServices=null;
                sIntelligenceServices=null;
                sAllService=null;
                sXyService=null;
                mSortList=null;
                mCacheCardList=null;
                customPageInterface=null;
                mCustomPageProfile=null;
                if (mHandler!=null){
                    mHandler.removeCallbacksAndMessages(null);
                    mHandler=null;
                }
                if (AccountCustomManager.getInstance(null)!=null){
                    AccountCustomManager.getInstance(null).onDestroy();
                }
                if (SearchManager.getInstance(null)!=null){
                    SearchManager.getInstance(null).onDestroy();
                }
                if (mCustomPageView!=null){
                    mCustomPageView.removeNewsView();
                    if (mCustomPageView.getNewsView()!=null){
                        mCustomPageView.getNewsView().removeView();
                    }
                    mCustomPageView.removeAllViews();
                    mCustomPageView=null;
                }
                CLog cLog = CLog.getInstance();
                if (cLog!=null){
                    cLog.onDestroy();
                }
                ThreadPool.onDestroy();
                mCustomPageManager=null;
            }
        };
        runOnMainThread(r);
    }

AccountCustomManager的onDestory：
 

public void onDestroy() {
        Log.v(TAG, "onDestroy");
        recycleBmpRes();
        if (mReceiver != null) {
            context.getApplicationContext().unregisterReceiver(mReceiver);
            mReceiver = null;
        }
//        if (mAuthenticator!=null){
            unBindAuthenService();
//        }
        if (mHandler!=null){
            mHandler.removeCallbacksAndMessages(null);
            mHandler=null;
        }
        mAccountCustomManager=null;
    }

SearchManager的OnDestory：

public void onDestroy(){
        unRegisterSearchDataListener();
        if (searchLoaderTask!=null){
            searchLoaderTask.onDestroy();
            searchLoaderTask=null;
        }
        adapter=null;
        if (sLoad!=null){
            sLoad.removeCallbacksAndMessages(null);
            sLoad=null;
        }
        if (sLoadThread!=null){
            sLoadThread=null;
        }
        context=null;
        if (fixedThreadPool!=null){
            fixedThreadPool.shutdown();
            fixedThreadPool=null;
        }
        ContactsHelp.release();
        SmsHelp.release();
        LocalFileHelp.release();
        mySearchInterface=null;
        mSearchManager=null;
        if (contactsRunnable!=null){
            contactsRunnable.onDestroy();
            contactsRunnable=null;
        }
        if (smsMmsRunnable!=null){
            smsMmsRunnable.onDestroy();
            smsMmsRunnable=null;
        }
        if (pocketRunnable!=null){
            pocketRunnable.onDestroy();
            pocketRunnable=null;
        }
        if (calendarRunnable!=null){
            calendarRunnable.onDestroy();
            calendarRunnable=null;
        }
        if (galleryRunnable!=null){
            galleryRunnable.onDestroy();
            galleryRunnable=null;
        }
        if (fileRunnable!=null){
            fileRunnable.onDestroy();
            fileRunnable=null;
        }
        if (settingRunnable!=null){
            settingRunnable.onDestroy();
            settingRunnable=null;
        }
        if (noteRunnable!=null){
            noteRunnable.onDestroy();
            noteRunnable=null;
        }
        searchText=null;
        searchStrLowerCase=null;
        noSearchStr=null;
        TAG=null;
        SearchRunnable.clearHandler();
        ContactLocaleUtils contactLocaleUtils = ContactLocaleUtils.getContactLocaleUtils();
        if (contactLocaleUtils!=null){
            contactLocaleUtils.onDestroy();
        }
        HanziToPinyin hanziToPinyin = HanziToPinyin.getHanziToPinyin();
        if (hanziToPinyin!=null){
            hanziToPinyin.onDestroy();
        }
        MyBaseItem.onDestroy();
    }

以上主要释放了列表（mSortList.clear();）、线程池（fixedThreadPool.shutdown();）Handler（mHandler.removeCallbacksAndMessages(null)）、广播（unregisterReceiver(mReceiver)）、service（context.unbindService(conn)）、