得到安装程序的大小

PackageManager pm = getPackageManager(); 
 
Method getPackageSizeInfo = pm.getClass().getMethod( 
    "getPackageSizeInfo", String.class, IPackageStatsObserver.class);    getPackageSizeInfo.invoke(pm, "com.android.mms", 
    new IPackageStatsObserver.Stub() { 
 
        @Override 
        public void onGetStatsCompleted(PackageStats pStats, boolean succeeded) 
            throws RemoteException { 
 
            Log.i(TAG, "codeSize: " + pStats.codeSize); 
        } 
    });