blocks|key|744923|text|在context的参数位置尝试getParent()，就像new+AlertDialog.Builder(getParent());希望它能工作，它对我有效。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|744924|entityMap^0|1|7|F|B|T|11|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

Try <code>getParent()</code> at the argument place of <code>context</code> like <code>new AlertDialog.Builder(getParent());</code> Hope it will work, it worked for me.

blocks|key|744971|text|在我的例子中，我尝试这样创建我的对话框：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|744972|new+Dialog(getApplicationContext());|code-block|syntax|javascript|744973|所以我不得不换成：|744974|new+Dialog(this);|744975|它对我来说工作得很好;)|744976|entityMap^0|0|0|0|0|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]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

In my case I was trying to create my dialog like this:

<pre><code>new Dialog(getApplicationContext());
</code></pre>

So I had to change for:

<pre><code>new Dialog(this);
</code></pre>

And it works fine for me ;)

blocks|key|528553|text|我在context字段中尝试了以下内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|528554|this.getActivity().getParent()|code-block|syntax|javascript|528555|它对我来说工作得很好。这是从“Fragment”扩展而来的类：|528556|public+class+filtro+extends+Fragment{...|528557|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I tried with this in the context field:

<pre><code>this.getActivity().getParent()
</code></pre>

and it works fine for me. This was from a class which extends from "Fragment":

<pre><code>public class filtro extends Fragment{...
</code></pre>

blocks|key|528611|text|您可以继续使用getApplicationContext()，但是在使用之前，您应该添加以下标志：dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT)，并且不会显示错误。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|528612|别忘了添加权限：|528613|<uses-permission+android:name="android.permission.SYSTEM_ALERT_WINDOW"+/>|code-block|syntax|javascript|528614|entityMap^0|7|N|1D|20|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

You can continue to use <code>getApplicationContext()</code>, but before use, you should add this flag: <code>dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT)</code>, and the error will not show.

And don't forget to add permission:

<pre><code>&lt;uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" /&gt;
</code></pre>

blocks|key|745159|text|使用此选项和上下文not+worked+for+me..but+MyActivityName.this+worked。希望这对任何需要它的人都有帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|745160|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|$]]

Use this and context not worked for me..but MyActivityName.this worked. Hope this helps anyone who need it.

blocks|key|528802|text|我也有同样的例外。我解决这个问题的方法是将对话框的实例作为参数传递给函数，并使用它来代替仅传递上下文，然后使用getContext()。这个解决方案解决了我的问题，希望它能有所帮助|type|unstyled|depth|inlineStyleRanges|entityRanges|data|528803|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 got the same exception. what i do to fix this is to pass instance of the dialog 
as parameter into function and use it instead of pass only context then using getContext(). this solution solve my problem, hope it can help

blocks|key|745344|text|我通过在AndroidManifest.xml中添加下面的用户权限解决了这个错误|type|unstyled|depth|inlineStyleRanges|entityRanges|data|745345|+<uses-permission+android:name="android.permission.SYSTEM_ALERT_WINDOW"+/>|code-block|syntax|javascript|745346|此外，使用活动名称初始化警报对话框：|745347|AlertDialog.Builder+builder+=+new+AlertDialog.Builder(YourActivity.this);|745348|有关更多详细信息，请访问visit==>+How+to+create+Alert+Dialog+in+Android|offset|length|745349|entityMap|0|LINK|mutability|MUTABLE|url|https://answerdone.blogspot.com/2019/03/how-to-create-alert-dialog-with.html^0|0|0|0|0|L|11|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@$M|11|N|12|1|13]]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

I solved this error by add below user-permission in AndroidManifest.xml 

<pre><code> &lt;uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" /&gt;
</code></pre>

Also, Initialize Alert dialog with Activity Name:

<pre><code>AlertDialog.Builder builder = new AlertDialog.Builder(YourActivity.this);
</code></pre>

For More Details, visit==> <a href="https://answerdone.blogspot.com/2019/03/how-to-create-alert-dialog-with.html" rel="nofollow noreferrer">How to create Alert Dialog in Android</a>

blocks|key|528939|text|您好，如果您正在使用适配器，可能会有机会。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|528940|当您在适配器、getContext()、上下文或活动中使用任何对话框时，您需要知道的所有内容有时都不会起作用。|528941|这是我使用v.getRootView().getContext()的诀窍，其中v是您引用的视图对象。|offset|length|style|CODE|528942|例如：|528943|++++++++++++@Override
++++++++++++public+void+onClick(View+v)+{
++++++++++++++++//+TODO+Auto-generated+method+stub
++++++++++++++++new+DatePickerDialog(v.getRootView().getContext(),+date,+myCalendar
++++++++++++++++++++++++.get(Calendar.YEAR),+myCalendar.get(Calendar.MONTH),
++++++++++++++++++++++++myCalendar.get(Calendar.DAY_OF_MONTH)).show();
++++++++++++}
++++++++});++
If+you+are+getting+this+problem+because+of+alert+dialog.
Refer+[here][1]+But+it+is+same+concept.


++[1]:+https://stackoverflow.com/questions/6367771/displaying-alertdialog-inside-a-custom-listadapter-class|code-block|syntax|javascript|528944|entityMap^0|0|0|5|S|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@$F|V|G|W|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|X|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|Y|8|@]|9|@]|A|$O|P]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

Hello there if you are using adapter there might be a chance. 
All you need to know when you used any dialog in adapter,getContext(),context or activity won't work sometime.

Here is the trick I used
 <code>v.getRootView().getContext()</code>
where v is the view object you are referencing. 
Eg. 

<pre><code>
 @Override
 public void onClick(View v) {
 // TODO Auto-generated method stub
 new DatePickerDialog(v.getRootView().getContext(), date, myCalendar
 .get(Calendar.YEAR), myCalendar.get(Calendar.MONTH),
 myCalendar.get(Calendar.DAY_OF_MONTH)).show();
 }
 }); 
If you are getting this problem because of alert dialog.
Refer [here][1] But it is same concept.


 [1]: https://stackoverflow.com/questions/6367771/displaying-alertdialog-inside-a-custom-listadapter-class
</code></pre>

blocks|key|529014|text|以防你想从片段中显示对话框。只需使用"getActivity()“方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|529015|AlertDialog.Builder+builder+=+new+AlertDialog.Builder(getActivity());|code-block|syntax|javascript|529016|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|$]]

Just in case you are trying to achive showing the Dialog from a Fragment.
Just use &quot;getActivity()&quot; method.
<pre><code>AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
</code></pre>

I get the following Android exception when I try to open a dialog. Can someone please help me understand what is going on and how can I fix this problem?

<pre><code>android.view.WindowManager$BadTokenException: 
 Unable to add window -- token null is not for an application
 at android.view.ViewRoot.setView(ViewRoot.java:509)
 at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
 at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
 at android.app.Dialog.show(Dialog.java:241)
</code></pre>

Android 'Unable to add window -- token null is not for an application' exception

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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当我试图打开一个对话框时，我得到了下面的Android异常。有人能帮我了解一下发生了什么事吗?我该如何解决这个问题？android.view.WindowManager$BadTokenException:   Unable to add window -- token null is not for an appli...

问Android‘无法添加窗口-- token null不是针对应用程序的异常
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问Android‘无法添加窗口-- token null不是针对应用程序的异常
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