来看日志：
04-05 03:38:54.224: E/start(9713): ~1333597134230 04-05 03:38:55.024: D/dalvikvm(9713): GC_FOR_MALLOC freed 2463 objects / 413552 bytes in 107ms 04-05 03:38:55.774: D/dalvikvm(9713): GC_FOR_MALLOC freed 1698 objects / 566968 bytes in 89ms 04-05 03:38:56.724: D/dalvikvm(9713): GC_FOR_MALLOC freed 1678 objects / 507304 bytes in 48ms 04-05 03:38:58.254: D/dalvikvm(9713): GC_FOR_MALLOC freed 1600 objects / 529256 bytes in 45ms 04-05 03:39:00.273: D/dalvikvm(9713): GC_FOR_MALLOC freed 1623 objects / 505208 bytes in 44ms 04-05 03:39:01.264: D/dalvikvm(9713): GC_FOR_MALLOC freed 1600 objects / 529216 bytes in 46ms 04-05 03:39:01.554: D/dalvikvm(9713): GC_FOR_MALLOC freed 1623 objects / 505152 bytes in 47ms 04-05 03:39:01.874: D/dalvikvm(9713): GC_FOR_MALLOC freed 1600 objects / 529216 bytes in 45ms 04-05 03:39:02.094: E/endTime(9713): ~1333597142101 04-05 03:39:02.094: E/time---->(9713): 7871 04-05 03:39:02.094: E/average(9713): 157
日志的最后一条显示：平均提交耗时约为157毫秒，当然这里每次提交3条记录，那么每次commit大概耗时52毫秒
2.采用先提交，最后一次性commit方法
button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { SharedPreferenceManager manager = SharedPreferenceManager.getInstance(); Long startTime = Calendar.getInstance().getTimeInMillis(); Log.e("start","~"+startTime ); for(int i=0;i<50;i++){ manager.putInt("first"+i, 1); manager.putInt("second"+i, 2); manager.putInt("third"+i, 3); } manager.commit(); Long endTime = Calendar.getInstance().getTimeInMillis(); Log.e("endTime","~"+endTime ); Log.e("time---->", ""+(endTime-startTime)); Log.e("average", ""+(endTime-startTime)/50); } });
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