blocks|key|3210354|text|正如我怀疑的那样，事情并不是在一条sql语句中执行的。为了实现它，只需在DAO对象上使用insertInTx即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3210355|下面是上面的代码，做了一些细微的修改，使它在半秒内就能运行|3210356|NewsArticle[]+newsArticles+=+new+NewsArticle[600];
NewsArticle+testArticle;
++++for+(int+i+=+0;+i+<+600;+i%2B%2B)+{
+++++++++testArticle+=+new+NewsArticle();
+++++++++testArticle.setTitle("title-text"+%2B+i);
+++++++++testArticle.setBody("body-text"+%2B+i);
+++++++++testArticle.setShortDescription("short-text"+%2B+i);
+++++++++testArticle.setDate(now);
+++++++++newsArticles[i]+=+testArticle;
++++}
newsArticleDao.insertInTx(newsArticles);|code-block|syntax|javascript|3210357|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

As I suspected things weren't executed within a single sql statement. In order to achieve it just use insertInTx on a DAO object.

Here's the above code with slight changes that make it run in like half a second

<pre><code>NewsArticle[] newsArticles = new NewsArticle[600];
NewsArticle testArticle;
 for (int i = 0; i &lt; 600; i++) {
 testArticle = new NewsArticle();
 testArticle.setTitle("title-text" + i);
 testArticle.setBody("body-text" + i);
 testArticle.setShortDescription("short-text" + i);
 testArticle.setDate(now);
 newsArticles[i] = testArticle;
 }
newsArticleDao.insertInTx(newsArticles);
</code></pre>

blocks|key|2729231|text|您还可以创建一个新的Runnable，它在DaoSession.runInTx函数中执行所有插入操作|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2729232|daoSession.runInTx(new+Runnable+{
++++public+void+run(){
++++++++Date+now+=+Calendar.getInstance().getTime();
++++++++for+(int+i+=+0;+i+<+600;+i%2B%2B)+{
+++++++++++++NewsArticle+testArticle+=+new+NewsArticle();
+++++++++++++++++++++testArticle.setTitle("title-text"+%2B+i);
+++++++++++++++++++++testArticle.setBody("body-text"+%2B+i);
+++++++++++++++++++++tesArticle.setShortDescription("short-text"+%2B+i);
+++++++++++++++++++++testArticle.setDate(now);
+++++++++++++++++++++newsArticleDao.insert(testArticle);
++++++++}
+++}
});|code-block|syntax|javascript|2729233|entityMap^0|L|I|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

you can also create a new Runnable that does all the inserts runs within the <code>DaoSession.runInTx</code> function

<pre><code>daoSession.runInTx(new Runnable {
 public void run(){
 Date now = Calendar.getInstance().getTime();
 for (int i = 0; i &lt; 600; i++) {
 NewsArticle testArticle = new NewsArticle();
 testArticle.setTitle("title-text" + i);
 testArticle.setBody("body-text" + i);
 tesArticle.setShortDescription("short-text" + i);
 testArticle.setDate(now);
 newsArticleDao.insert(testArticle);
 }
 }
});
</code></pre>

blocks|key|4852744|text|这里提供了一篇关于加速Android的SQLITE插入操作的优秀文章。尝试这一点，我可以优化同步模块的速度从1.2小时到14分钟，在同步39MB数据库。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4852745|http://tech.vg.no/2011/04/04/speeding-up-sqlite-insert-operations/|offset|length|4852746|如果您需要代码spinnets，请告诉我。|4852747|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1U|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

An excellent article on speeding up SQLITE insert operations for Android is given here.
Tryout this I could optimize the sync modules speed dramatically from 1.2 hours to 14 mins in syncing 39MB DB.

<a href="http://tech.vg.no/2011/04/04/speeding-up-sqlite-insert-operations/" rel="nofollow">http://tech.vg.no/2011/04/04/speeding-up-sqlite-insert-operations/</a>

Let me know in case if you need code spinnets.

blocks|key|4939926|text|我尝试了下面提到的，并获得了最好的性能|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4939927|++++++++DevOpenHelper+helper+=+new+DaoMaster.DevOpenHelper(this,+"db-name",
++++++++++++++++null);
++++++++SQLiteDatabase+dbGreen=+helper.getWritableDatabase();

++++++++dbGreen.beginTransaction();

++++++++//Perform+your+insertion+here
++++++++dbGreen.setTransactionSuccessful();
++++++++dbGreen.endTransaction();|code-block|syntax|javascript|4939928|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I tried below mentioned and got the best performance

<pre><code> DevOpenHelper helper = new DaoMaster.DevOpenHelper(this, "db-name",
 null);
 SQLiteDatabase dbGreen= helper.getWritableDatabase();

 dbGreen.beginTransaction();

 //Perform your insertion here
 dbGreen.setTransactionSuccessful();
 dbGreen.endTransaction();
</code></pre>

I've chosen greenDAO because it's site states that it's one of the fastest ORM systems for android. To my dissapointment it takes it like 40 seconds to insert 600 records on Samsung i9001. I'm not sure if I'm doing anything wrong.

Could you suggest anything to lessen the amount of time it takes to perform those operations ?

generator code:

<pre><code>private static void addNewsArticle(Schema schema) {
 Entity article = schema.addEntity("NewsArticle");
 article.addIdProperty().autoincrement();
 article.addStringProperty("title").notNull();
 article.addStringProperty("body").notNull();
 article.addStringProperty("shortDescription").notNull();
 article.addStringProperty("thumb");
 article.addDateProperty("date").notNull();
}
</code></pre>

insertions

<pre><code>Date now = Calendar.getInstance().getTime();
for (int i = 0; i &lt; 600; i++) {
 NewsArticle testArticle = new NewsArticle();
 testArticle.setTitle("title-text" + i);
 testArticle.setBody("body-text" + i);
 testArticle.setShortDescription("short-text" + i);
 testArticle.setDate(now);
 newsArticleDao.insert(testArticle);
}
</code></pre>

greenDAO 40 seconds to insert 600 records

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我之所以选择greenDAO，是因为它的网站宣称它是最快的安卓对象关系管理系统之一。令我失望的是，在三星i9001上插入600条记录大约需要40秒。我不确定我是否做错了什么。您有什么建议可以减少执行这些操作的时间吗？生成器代码：private static void addNewsArticle(Schema sche...

问greenDAO 40秒插入600条记录
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