Android學習筆記_58_清除手機應用程式緩衝

通過查看手機設定(setting)原始碼，發現它裡面擷取應用大小和緩衝大小是通過PackageManager裡面的getPackageSizeInfo方法。然而此方法時私人的，因此通過反射調用此方法。裡面要用到IPackageStatsObserver介面，它是一個aidl方式進行訪問。

  DemoActivity  Map<String, CacheInfo> ==  HashMap<String, CacheInfo>=<PackageInfo> packageinfos ==== =   onItemClick(AdapterView<?> position,                 "haha"= "android.intent.action.VIEW""android.intent.category.DEFAULT""android.intent.category.VOICE_LAUNCH"="pkg", info.getPackname());      getAppSize(= PackageManager..getMethod("getPackageSizeInfo",  Class[]{String.  onGetStatsCompleted(PackageStats pStats, succeeded)                              cachesize = codesize = datasize ==  MyAdapter  Set<Entry<String, CacheInfo>> List<CacheInfo>==  ArrayList<CacheInfo> (Entry<String, CacheInfo>  Object getItem(  getItemId( View getView(= = (convertView == = View.inflate(DemoActivity., R.layout.item, =====

            String getDataSize( (size < 0= 0=  DecimalFormat("####.00" (size < 1024 size + "bytes"  (size < 1024 * 1024 kbsize = size / formater.format(kbsize) + "KB"  (size < 1024 * 1024 * 1024 mbsize = size / 1024f / formater.format(mbsize) + "MB"  (size < 1024 * 1024 * 1024 * 1024 gbsize = size / 1024f / 1024f / formater.format(gbsize) + "GB" "size: error"           String getKBDataSize( (size < 0= 0 getDataSize(size * 1024

 

aidl檔案：IPackageStatsObserver.aidl

 onGetStatsCompleted(in PackageStats pStats, 

PackageStats.aidl