blocks|key|3252088|text|您可以简单地使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3252089|finish();
startActivity(getIntent());|code-block|syntax|javascript|3252090|若要从Activity本身刷新，请执行以下操作。|offset|length|style|CODE|3252091|entityMap^0|0|0|3|8|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

You can Simply use 

<pre><code>finish();
startActivity(getIntent());
</code></pre>

to refresh an <code>Activity</code> from within itself.

blocks|key|3252201|text|对于那些不想看到recreate()后闪烁方法的人，只需使用|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3252202|+finish();
+overridePendingTransition(0,+0);
+startActivity(getIntent());
+overridePendingTransition(0,+0);|code-block|syntax|javascript|3252203|entityMap^0|J|2|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|$]]

for those who don't want to see that blink after recreate() method simply use

<pre><code> finish();
 overridePendingTransition(0, 0);
 startActivity(getIntent());
 overridePendingTransition(0, 0);
</code></pre>

blocks|key|307579|text|这就是我在更改从首选项更改返回后重新加载活动的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307580|@Override
protected+void+onResume()+{

+++super.onResume();
+++this.onCreate(null);
}|code-block|syntax|javascript|307581|这本质上会导致活动重新绘制自身。|307582|更新：执行此操作的更好方法是调用recreate()方法。这将导致重新创建该活动。|offset|length|style|BOLD|CODE|307583|entityMap^0|0|0|0|0|3|G|A|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|T|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|U|8|@$K|V|L|W|M|N]|$K|X|L|Y|M|O]]|9|@]|A|$]]|$1|P|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|Q|$]]

This is what I do to reload the activity after changing returning from a preference change.

<pre><code>@Override
protected void onResume() {

 super.onResume();
 this.onCreate(null);
}
</code></pre>

This essentially causes the activity to redraw itself.

Updated: A better way to do this is to call the <code>recreate()</code> method. This will cause the activity to be recreated.

blocks|key|307668|text|只需使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307669|this.recreate();|code-block|syntax|javascript|307670|这将触发活动中的onCreate方法|307671|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

simply use 

<pre><code>this.recreate();
</code></pre>

this will trigger the onCreate method in the activity

blocks|key|307646|text|我看到了之前关于使用Intent重新加载活动的答案。这些方法都可以工作，但您也可以使用Activity类本身中给出的recreate()方法来做同样的事情。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307647|与其写这篇文章，不如|307648|//关闭对话框后刷新主活动|307649|Intent+refresh+=+new+Intent(this,+clsMainUIActivity.class);
startActivity(refresh);
this.finish();|code-block|syntax|javascript|307650|只需编写以下代码即可完成此操作|307651|recreate();|307652|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|T|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|V|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I saw earlier answers which have been given for reloading the activity using Intent. Those will work but you can also do the same using recreate() method given in Activity class itself.

Instead of writing this

// Refresh main activity upon close of dialog box

<pre><code>Intent refresh = new Intent(this, clsMainUIActivity.class);
startActivity(refresh);
this.finish();
</code></pre>

This can be done by writing this only

<pre><code>recreate();
</code></pre>

blocks|key|302382|text|我需要匆忙地更新我的一个应用程序中的消息列表，所以在关闭我所在的对话框之前，我刚刚刷新了我的主UI活动。我相信也有更好的方法来实现这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|302383|//+Refresh+main+activity+upon+close+of+dialog+box
Intent+refresh+=+new+Intent(this,+clsMainUIActivity.class);
startActivity(refresh);
this.finish();+//|code-block|syntax|javascript|302384|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 needed to update a message list in one of my applications in a hurry, so I just performed a refresh of my main UI activity before I closed the dialog I was in. I'm sure there are better ways to accomplish this as well. 

<pre><code>// Refresh main activity upon close of dialog box
Intent refresh = new Intent(this, clsMainUIActivity.class);
startActivity(refresh);
this.finish(); //
</code></pre>

blocks|key|3037736|text|Android包括一个进程管理系统，它处理活动的创建和销毁，这在很大程度上否定了手动重新启动活动的任何好处。你可以在Application+Fundamentals上看到更多关于它的信息|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3037737|不过，好的做法是确保您的onPause和onStop方法释放您不需要保留的任何资源，并使用onLowMemory将您的活动需求减少到最低限度。|3037738|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/guide/topics/fundamentals.html#procthread|1|http://developer.android.com/reference/android/app/Activity.html#onLowMemory^0|1M|O|0|0|19|B|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

Android includes a process management system which handles the creation and destruction of activities which largely negates any benefit you'd see from manually restarting an activity. You can see more information about it at <a href="http://developer.android.com/guide/topics/fundamentals.html#procthread" rel="nofollow noreferrer">Application Fundamentals</a>

What is good practice though is to ensure that your onPause and onStop methods release any resources which you don't need to hold on to and use <a href="http://developer.android.com/reference/android/app/Activity.html#onLowMemory" rel="nofollow noreferrer">onLowMemory</a> to reduce your activities needs to the absolute minimum.

blocks|key|3252141|text|从相同的activity开始，然后关闭activity。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3252142|Intent+refresh+=+new+Intent(this,+Main.class);
startActivity(refresh);//Start+the+same+Activity
finish();+//finish+Activity.|code-block|syntax|javascript|3252143|entityMap^0|4|8|J|8|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

Start with an intent your same <code>activity</code> and close the <code>activity</code>.

<pre><code>Intent refresh = new Intent(this, Main.class);
startActivity(refresh);//Start the same Activity
finish(); //finish Activity.
</code></pre>

blocks|key|302485|text|重新加载整个活动可能是一项繁重的任务。只需将需要刷新的代码部分放入(kotlin)：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|302486|override+fun+onResume()+{
++++super.onResume()
++++//here...
}|code-block|syntax|javascript|302487|Java：|302488|@Override
public+void+onResume(){
++++super.onResume();
++++//here...

}|302489|并在需要时调用"onResume()“。|302490|entityMap^0|Y|6|0|0|0|0|8|A|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

Reloading your whole activity may be a heavy task.
Just put the part of code that has to be refreshed in (kotlin):

<pre><code>override fun onResume() {
 super.onResume()
 //here...
}
</code></pre>

Java:

<pre><code>@Override
public void onResume(){
 super.onResume();
 //here...

}
</code></pre>

And call "onResume()" whenever needed.

blocks|key|307535|text|在某些情况下，这是最佳实践，在其他情况下，这不是一个好主意，如果你选择这样做，它是由上下文驱动的，使用以下内容是从活动传递给她儿子的最佳方式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307536|++++Intent+i+=+new+Intent(myCurrentActivityName.this,activityIWishToRun.class);++++
++++startActivityForResult(i,+GlobalDataStore.STATIC_INTEGER_VALUE);|code-block|syntax|javascript|307537|问题是，每当您从activityIWishToRun完成()时，您就会返回到您的生活活动|307538|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

in some cases it's the best practice in other it's not a good idea it's context driven
if you chose to do so using the following is the best way to pass from an activity to her sons :

<pre><code> Intent i = new Intent(myCurrentActivityName.this,activityIWishToRun.class); 
 startActivityForResult(i, GlobalDataStore.STATIC_INTEGER_VALUE);
</code></pre>

the thing is whenever you finish() from activityIWishToRun you return to your a living activity

blocks|key|3037678|text|我不认为这是个好主意..。最好是实现一个更干净的方法。例如，如果您的活动包含一个表单，则clear方法可以只清除表单中的每个小部件并删除所有临时数据。我猜这就是您想要的:将活动恢复到其初始状态。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3037679|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|$]]

I don't think that's a good idea... it'd be better to implement a cleaner method. For instance, if your activity holds a form, the cleaner method could just clear each widget in the form and delete all temporary data. I guess that's what you want: restore the activity to its initial state.

blocks|key|307557|text|在对此进行了一段时间的实验之后，我没有发现重新启动活动会产生意想不到的后果。此外，我认为这与Android在方向改变时默认做的事情非常相似，所以我看不出在类似的情况下不做这件事的理由。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307558|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|$]]

After experimenting with this for a while I've found no unexpected consequences of restarting an activity. Also, I believe this is very similar to what Android does by default when the orientation changes, so I don't see a reason not to do it in a similar circumstance.

blocks|key|307605|text|我也有同样的问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307606|import+android.support.v4.content.IntentCompat;

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK+%7CIntentCompat.FLAG_ACTIVITY_CLEAR_TASK);|code-block|syntax|javascript|307607|这段代码很适合我。Android+api+17|307608|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

i have same problem

<pre><code>import android.support.v4.content.IntentCompat;

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |IntentCompat.FLAG_ACTIVITY_CLEAR_TASK);
</code></pre>

this code work for me .
Android api 17

blocks|key|3252288|text|在活动中，您可以调用recreate()来“重新创建”活动(11%2B接口)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3252289|entityMap^0|A|A|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

In an activity you can call <code>recreate()</code> to "recreate" the activity (API 11+)

blocks|key|3037936|text|我有另一种方法，比如:将我的活动的launchMode设置为singleTop，不调用finish()，只需调用startActivity(getIntent())即可完成工作。您只需关心onCreate()和onNewIntent中的新数据。使用Sush的方式，应用程序可能会像AMAN+SINGH所说的那样闪烁。但我认为，即使他解决了“眨眼”问题，辛格的方法仍然会创造出一种新的活动，这在某种程度上是不必要的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3037937|这个问题太晚了，但是如果有人在寻找解决方案，它就在这里。|3037938|entityMap^0|H|A|U|9|17|8|1K|Q|2M|A|2X|B|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|I|$]]

I had another approach like: setting the <code>launchMode</code> of my activity to <code>singleTop</code> and without calling <code>finish()</code>, just <code>startActivity(getIntent())</code> will do the job. You just have to care about the new data in <code>onCreate()</code> and <code>onNewIntent</code>. With Sush's way, the application may blink as AMAN SINGH said. But AMAN SINGH's approach will still create a new activity which is somehow, unnecessary, even if he fixed the 'blink' problem, I think.
Too late for this question, but if someone looking for a solution, here it is.

blocks|key|307692|text|我使用了这个，没有使用finish()，它工作得很好|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|307693|startActivity(getIntent());|code-block|syntax|javascript|307694|entityMap^0|B|8|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|$]]

i used this and it works fine without 
<code>finish()</code>

<pre><code>startActivity(getIntent());
</code></pre>

blocks|key|307704|text|对我来说，它是有效的，它不是创建另一个意图，在相同的意图上加载新的数据。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307705|++++overridePendingTransition(0,+0);
++++finish();
++++overridePendingTransition(0,+0);
++++startActivity(getIntent());
++++overridePendingTransition(0,+0);|code-block|syntax|javascript|307706|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|$]]

for me it's working it's not creating another Intents and on same the Intents new data loaded.
<pre><code> overridePendingTransition(0, 0);
 finish();
 overridePendingTransition(0, 0);
 startActivity(getIntent());
 overridePendingTransition(0, 0);
</code></pre>

blocks|key|307686|text|在登录后，我也遇到了同样的问题，所以我使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307687|@Override
protected+void+onRestart()+{
++++this.recreate();
++++super.onRestart();
}|code-block|syntax|javascript|307688|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|$]]

After login I had the same problem so I used

<pre><code>@Override
protected void onRestart() {
 this.recreate();
 super.onRestart();
}
</code></pre>

Is it a good practice to reload an <code>Activity</code> in Android?

What would be the best way to do it? <code>this.finish</code> and then <code>this.startActivity</code> with the activity <code>Intent</code>?

Reload activity in Android

Android

Java

在Android中重新加载Activity是一种好的做法吗？最好的方法是什么?先使用this.finish，然后使用activity Intent执行this.startActivity

问在Android中重新加载活动
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