blocks|key|1133694|text|选择器使用户能够选择默认邮件应用程序之外的其他邮件应用程序。这是非常有用的，如果你使用普通的gmail+(私人)和电子邮件(工作相关)，你想选择哪一个。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1133695|应该始终使用...|1133696|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

The chooser enables the user to pick another mail application than the default. Its very useful if you use normal gmail (privat) and email (work related) and you want to choose which one to take.

Should always be used...

blocks|key|1133768|text|但对于遇到它的其他人，您可以将意图上的类型设置为mime类型的电子邮件，这至少会将其限制为可以发送适当类型的消息的应用程序：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1133769|Intent+i+=+new+Intent(Intent.ACTION_SEND);+
i.setType(+"message/rfc822");
startActivity(Intent.createChooser(i,+"Send+mail..."));|code-block|syntax|javascript|1133770|使选择器对话框更清晰。|1133771|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|$]]

Way old message but for others who come across it, you can set the type on the Intent to the mime type of emails, which will at least limit it to applications that can send that appropriate type of message:

<pre><code>Intent i = new Intent(Intent.ACTION_SEND); 
i.setType( "message/rfc822");
startActivity(Intent.createChooser(i, "Send mail..."));
</code></pre>

Makes the chooser dialog much cleaner.

blocks|key|919289|text|如果你不使用createChooser()，系统仍然会显示选择器对话框，除非用户已经表示他们已经决定使用哪个已安装的程序来完成给定的任务(或者他们已经撤销了之前的决定)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|919290|如果使用createChooser()，系统将始终显示该对话框，即使已经有明确的首选项也是如此。|919291|所以，这两个都是绝对正确的，你必须决定在任何给定的情况下使用哪一个。您的使用里程可能有所不同，但基本上，如果您提供文本、图像、视频或类似的显示或编辑格式，您可能希望省略createChooser()，这样用户已经喜欢的任何内容都可以立即开始。另一方面，如果你想分享一些你希望用户每次使用不同的安装程序来处理的事情(比如，发送电子邮件、Facebook、聊天等等)，你可能想要使用createChooser()让你的用户更容易地在运行中进行选择。|919292|entityMap^0|6|F|0|4|F|0|2C|F|59|F|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|K|$]]

If you don't use <code>createChooser()</code>, the system will still present the chooser dialog unless the user has already expressed their decision as to which installed program to use for the given task (or they have withdrawn their previous decision).

If you do use <code>createChooser()</code>, the system will always present the dialog, even if there already is an expressed preference.

So, both are absolutely correct, you have to decide which one to use in any given case. Your mileage might vary, but basically, if you offer up a format like a text, an image, a video or similar for display or editing, you probably want to omit <code>createChooser()</code> so that whatever the user already prefers can start immediately. On the other hand, if you want to share something that you expect the user to handle with a different installed program (say, send an e-mail, Facebook, chat, whatever) every time, you probably want to use <code>createChooser()</code> to make it easy for your user to select on the fly.

blocks|key|1133883|text|我个人使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1133884|try+{
++++startActivity(i);
}+catch+(ActivityNotFoundException+e)+{
++++startActivity(Intent.createChooser(i,+null));
}|code-block|syntax|javascript|1133885|因此，它将使用默认值，如果用户有默认值，将弹出“无应用程序”窗口，如果没有应用程序。两个人都很开心。|1133886|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 personally use:

<pre><code>try {
 startActivity(i);
} catch (ActivityNotFoundException e) {
 startActivity(Intent.createChooser(i, null));
}
</code></pre>

So it will use default if user has default, will popup "no app" window if no app. Both are happy.

blocks|key|919369|text|我推荐使用de.cketti.mailto:email-intent-builder库，而不是使用Android框架提供的API。This+article解释了什么是损坏的，以及为什么您应该切换。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|919370|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/cketti/EmailIntentBuilder|1|https://medium.com/@cketti/android-sending-email-using-intents-3da63662c58f^0|5|11|5|11|0|1T|C|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@$9|S|A|T|1|U]|$9|V|A|W|1|X]]|E|$]]|$1|F|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]|N|$5|I|J|K|E|$L|O]]]]

I recommend having a look at the <a href="https://github.com/cketti/EmailIntentBuilder" rel="nofollow noreferrer"><code>de.cketti.mailto:email-intent-builder</code></a> library instead of using the API provided by the Android framework. <a href="https://medium.com/@cketti/android-sending-email-using-intents-3da63662c58f" rel="nofollow noreferrer">This article</a> explains what is broken and why you should switch.

When ever we need to send an email in Android we will invoke registered email application using Intent.ACTION_SEND like below

<pre><code>Intent i = new Intent(Intent.ACTION_SEND);
startActivity(Intent.createChooser(i, "Send mail..."));
</code></pre>

My doubt is why do we need to use Intent.createChooser in startActivity rather than using
<code>startActivty(i)</code>.
Is there any specific reason of using <code>Intent.createChooser()</code>?

What is the purpose of using Intent.createChooser() in StartActivity() while sending email in Android

Android

当我们需要在安卓系统中发送电子邮件时，我们将使用Intent.ACTION_SEND调用注册的电子邮件应用程序，如下所示Intent i = new Intent(Intent.ACTION_SEND);startActivity(Intent.createChooser(i, "Send mail..."));我的疑...

问在安卓系统中发送电子邮件时，在StartActivity()中使用Intent.createChooser()的目的是什么
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问在安卓系统中发送电子邮件时，在StartActivity()中使用Intent.createChooser()的目的是什么
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