blocks|key|413570|text|在加载数据前清除所有字段从DB.loading数据开始，从take+and到此清除上一字段之前。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|413571|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Clear all fields before loading data start from DB.loading data from take little time and before this clear previous field.

blocks|key|429965|text|您可以在此处将所有字段设置为空。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|429966|您需要覆盖onSaveInstanceState(捆绑包savedInstanceState)，并将您想要更改的应用程序活动状态值写入捆绑包参数，如下所示：|429967|@Override
public+void+onSaveInstanceState(Bundle+savedInstanceState)+{
++super.onSaveInstanceState(savedInstanceState);
++/*+Save+UI+state+changes+to+the+savedInstanceState.
++*+This+bundle+will+be+passed+to+onCreate+if+the+process+is
++*+killed+and+restarted+activity
++*/
++savedInstanceState.putString("YourString",+"");

++//+etc...
++//+etc...
}|code-block|syntax|javascript|429968|Bundle本质上是存储NVP+(“名称-值对”)映射的一种方式，它将被传递到onCreate()和onRestoreInstanceState()，您可以在其中提取如下值：|429969|@Override
public+void+onRestoreInstanceState(Bundle+savedInstanceState)+{
++super.onRestoreInstanceState(savedInstanceState);
++//+Restore+UI+state+from+the+savedInstanceState.
++//+This+bundle+has+also+been+passed+to+onCreate.

++String+myString+=+savedInstanceState.getString("YourString");
}|429970|您通常会使用此技术来存储应用程序的实例值(选择、未保存的文本)等。|429971|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Here You can put all field as blank..

You need to override onSaveInstanceState(Bundle savedInstanceState) and write the application activity state values you want to change to the Bundle parameter like this:

<pre><code>@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
 super.onSaveInstanceState(savedInstanceState);
 /* Save UI state changes to the savedInstanceState.
 * This bundle will be passed to onCreate if the process is
 * killed and restarted activity
 */
 savedInstanceState.putString("YourString", "");

 // etc...
 // etc...
}
</code></pre>

The Bundle is essentially a way of storing a NVP ("Name-Value Pair") map, and it will get passed in to onCreate() and also onRestoreInstanceState() where you'd extract the values like this:

<pre><code>@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
 super.onRestoreInstanceState(savedInstanceState);
 // Restore UI state from the savedInstanceState.
 // This bundle has also been passed to onCreate.

 String myString = savedInstanceState.getString("YourString");
}
</code></pre>

You would usually use this technique to store instance values for your application (selections, unsaved text) etc.

I have two activities A and B. When the application starts, activity A is loaded and I load data to it from database.
I can go to activity B without any problems, but when I go back to activity A, the old data are viewed for a moment and the activity is reloaded.

Any idea how to fix this?

Returning back to last state in previous activity

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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我有两个活动A和B。当应用程序启动时，活动A被加载，我从数据库加载数据到活动A。我可以毫不费力地转到活动B，但当我返回到活动A时，系统会暂时查看旧数据，并重新加载该活动。你知道怎么解决这个问题吗？

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