blocks|key|903515|text|我不知道你能不能专门启动gmail。你有没有在你的onClickListener中尝试过|type|unstyled|depth|inlineStyleRanges|entityRanges|data|903516|Intent+emailIntent+=+new+Intent(Intent.ACTION_SEND);
emailIntent.setType("text/plain");
startActivity(emailIntent);++|code-block|syntax|javascript|903517|你可以在这里找到更多细节：Email+android+intent|offset|length|903518|entityMap|0|LINK|mutability|MUTABLE|url|http://mobile.tutsplus.com/tutorials/android/android-email-intent/^0|0|0|D|K|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

I don't know that you can specifically launch gmail. Have you tried this in your onClickListener

<pre><code>Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.setType("text/plain");
startActivity(emailIntent); 
</code></pre>

You can find more details here: <a href="http://mobile.tutsplus.com/tutorials/android/android-email-intent/" rel="noreferrer">Email android intent</a>

blocks|key|1118359|text|正如JeffC指出的那样，很容易告诉安卓你想发送电子邮件之类的东西，然后让安卓给用户一个选择列表，其中可能会包括GMail。如果你特别想要GMail，你必须更聪明一点。(请注意，正确的MIME类型实际上是“文本/普通”，而不是“普通/文本”。对于一个奇怪的实现，GMail似乎是唯一响应后者的活动，但这不是我会指望的行为。)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1118360|下面的应用程序演示了你可以遵循的原则:实际检查所有说它们可以处理你的发送意图的活动，看看它们是否看起来像GMail。|1118361|package+com.stackoverflow.beekeeper;

import+android.app.Activity;
import+android.content.Intent;
import+android.content.pm.PackageManager;
import+android.content.pm.ResolveInfo;
import+android.os.Bundle;

import+java.util.List;

public+class+StackOverflowTest+extends+Activity+{
++++/**+Called+when+the+activity+is+first+created.+*/
++++@Override
++++public+void+onCreate(final+Bundle+savedInstanceState)+{
++++++++super.onCreate(savedInstanceState);
++++++++setContentView(R.layout.main);
++++++++final+Intent+intent+=+new+Intent(android.content.Intent.ACTION_SEND);
++++++++intent.setType("text/plain");
++++++++final+PackageManager+pm+=+getPackageManager();
++++++++final+List<ResolveInfo>+matches+=+pm.queryIntentActivities(intent,+0);
++++++++ResolveInfo+best+=+null;
++++++++for+(final+ResolveInfo+info+:+matches)
+++++++++++if+(info.activityInfo.packageName.endsWith(".gm")+%7C%7C
++++++++info.activityInfo.name.toLowerCase().contains("gmail"))+best+=+info;
++++++++if+(best+!=+null)
+++++++++++intent.setClassName(best.activityInfo.packageName,+best.activityInfo.name);
++++++++startActivity(intent);
++++}
+}|code-block|syntax|javascript|1118362|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 JeffC pointed out, it is easy to essentially tell Android that you want to send something email-like and have Android give users a list of choices, which will probably include GMail. If you specifically want GMail, you have to be a bit cleverer. (Note that the correct MIME type is actually "text/plain", not "plain/text". Do to an implementation oddity, GMail seems to be the only activity which responds to the latter, but this isn't a behavior I would count on.)

The following App demonstrates the principle you can follow: actually examine all of the activities which say they can handle your SEND intent and see if any of them look like GMail.

<pre><code>package com.stackoverflow.beekeeper;

import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;

import java.util.List;

public class StackOverflowTest extends Activity {
 /** Called when the activity is first created. */
 @Override
 public void onCreate(final Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 final Intent intent = new Intent(android.content.Intent.ACTION_SEND);
 intent.setType("text/plain");
 final PackageManager pm = getPackageManager();
 final List&lt;ResolveInfo&gt; matches = pm.queryIntentActivities(intent, 0);
 ResolveInfo best = null;
 for (final ResolveInfo info : matches)
 if (info.activityInfo.packageName.endsWith(".gm") ||
 info.activityInfo.name.toLowerCase().contains("gmail")) best = info;
 if (best != null)
 intent.setClassName(best.activityInfo.packageName, best.activityInfo.name);
 startActivity(intent);
 }
 }
</code></pre>

blocks|key|1118375|text|try{++++
++++Intent+intent+=+new+Intent+(Intent.ACTION_VIEW+,+Uri.parse("mailto:"+%2B+"your_email"));
++++intent.putExtra(Intent.EXTRA_SUBJECT,+"your_subject");
++++intent.putExtra(Intent.EXTRA_TEXT,+"your_text");
++++startActivity(intent);
}catch(ActivityNotFoundException+e){
++++//TODO+smth
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1118376|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>try{ 
 Intent intent = new Intent (Intent.ACTION_VIEW , Uri.parse("mailto:" + "your_email"));
 intent.putExtra(Intent.EXTRA_SUBJECT, "your_subject");
 intent.putExtra(Intent.EXTRA_TEXT, "your_text");
 startActivity(intent);
}catch(ActivityNotFoundException e){
 //TODO smth
}
</code></pre>

blocks|key|903617|text|如果你在这一行没有得到任何东西|type|unstyled|depth|inlineStyleRanges|entityRanges|data|903618|final+List<ResolveInfo>+matches+=+pm.queryIntentActivities(intent,+0);|offset|length|style|CODE|903619|然后将此行替换为|903620|final+List<ResolveInfo>+matches+=+pm.queryIntentActivities(intent,+1);|903621|entityMap^0|0|0|1Y|0|0|0|1Y|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@$D|P|E|Q|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@$D|T|E|U|F|G]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|M|$]]

if you don't get anything in this line 

<code>final List&lt;ResolveInfo&gt; matches = pm.queryIntentActivities(intent, 0);</code>

then replace this line with 

<code>final List&lt;ResolveInfo&gt; matches = pm.queryIntentActivities(intent, 1);</code>

blocks|key|903733|text|这段代码将直接启动gmail应用程序来发送电子邮件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|903734|我发现使用this+post时，这里最重要的部分是找到"packageName“和"activityInfo.name”。|offset|length|903735|我只想使用没有选择器的gmail。请注意，包名是硬编码的，所以如果Gmail更改了包名，它将不再起作用。|903736|关键是setComponent，其中第一个参数是包名，第二个参数是activityInfo名称。|903737|但就像我说的，谨慎使用，我重复一遍；如果用户没有安装gmail应用程序，或者gmail更改了它的包名或活动名来发送一封电子邮件，这个(硬)代码就会崩溃。你已经被警告了;)|903738|以下是我的代码|903739|Intent+myIntent+=+new+Intent(Intent.ACTION_SEND);

PackageManager+pm+=+getPackageManager();
Intent+tempIntent+=+new+Intent(Intent.ACTION_SEND);
tempIntent.setType("*/*");
List<ResolveInfo>+resInfo+=+pm.queryIntentActivities(tempIntent,+0);
for+(int+i+=+0;+i+<+resInfo.size();+i%2B%2B)+{
++++ResolveInfo+ri+=+resInfo.get(i);
++++if+(ri.activityInfo.packageName.contains("android.gm"))+{
++++++++myIntent.setComponent(new+ComponentName(ri.activityInfo.packageName,+ri.activityInfo.name));
++++++++myIntent.setAction(Intent.ACTION_SEND);
++++++++myIntent.putExtra(Intent.EXTRA_EMAIL,+new+String[]{"exampleto@gmail.com"});
++++++++myIntent.setType("message/rfc822");
++++++++myIntent.putExtra(Intent.EXTRA_TEXT,+"extra+text");
++++++++myIntent.putExtra(Intent.EXTRA_SUBJECT,+"Extra+subject");
++++++++myIntent.putExtra(Intent.EXTRA_STREAM,+Uri.parse("uri://your/uri/string");
++++}
}
startActivity(myIntent);|code-block|syntax|javascript|903740|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/9730243/how-to-filter-specific-apps-for-action-send-intent-and-set-a-different-text-for/^0|0|5|9|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@$D|12|E|13|1|14]]|A|$]]|$1|F|3|G|5|6|7|15|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|16|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|17|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|18|8|@]|9|@]|A|$]]|$1|N|3|O|5|P|7|19|8|@]|9|@]|A|$Q|R]]|$1|S|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

This code will directly start the gmail application to send an email.

I found out using <a href="https://stackoverflow.com/questions/9730243/how-to-filter-specific-apps-for-action-send-intent-and-set-a-different-text-for/">this post</a> that the important part here is to find the "packageName" and the "activityInfo.name"

I wanted to only use gmail without a chooser. Note that the package name is hard coded so if Gmail changes its packagename it won't work any more.

The key to this was the setComponent where the first param is the package name and the second param is the activityInfo name.

But like i said use with caution, I repeat myself; if the user doesn't have the gmail app installed or gmail changes its package name or Activty name to send an email this (hard)code will break. Thy have been warned ;)

Here is my code

<pre><code>Intent myIntent = new Intent(Intent.ACTION_SEND);

PackageManager pm = getPackageManager();
Intent tempIntent = new Intent(Intent.ACTION_SEND);
tempIntent.setType("*/*");
List&lt;ResolveInfo&gt; resInfo = pm.queryIntentActivities(tempIntent, 0);
for (int i = 0; i &lt; resInfo.size(); i++) {
 ResolveInfo ri = resInfo.get(i);
 if (ri.activityInfo.packageName.contains("android.gm")) {
 myIntent.setComponent(new ComponentName(ri.activityInfo.packageName, ri.activityInfo.name));
 myIntent.setAction(Intent.ACTION_SEND);
 myIntent.putExtra(Intent.EXTRA_EMAIL, new String[]{"exampleto@gmail.com"});
 myIntent.setType("message/rfc822");
 myIntent.putExtra(Intent.EXTRA_TEXT, "extra text");
 myIntent.putExtra(Intent.EXTRA_SUBJECT, "Extra subject");
 myIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("uri://your/uri/string");
 }
}
startActivity(myIntent);
</code></pre>

blocks|key|1118515|text|public+static+void+openGmail(Activity+activity,String[]+email,+String+subject,+String+content)+{
++++Intent+emailIntent+=+new+Intent(Intent.ACTION_SEND);
++++emailIntent.putExtra(Intent.EXTRA_EMAIL,+email);
++++emailIntent.putExtra(Intent.EXTRA_SUBJECT,+subject);
++++emailIntent.setType("text/plain");
++++emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,+content);
++++final+PackageManager+pm+=+activity.getPackageManager();
++++final+List<ResolveInfo>+matches+=+pm.queryIntentActivities(emailIntent,+0);
++++ResolveInfo+best+=+null;
++++for(final+ResolveInfo+info+:+matches)
++++++++if+(info.activityInfo.packageName.endsWith(".gm")+%7C%7C+info.activityInfo.name.toLowerCase().contains("gmail"))
++++++++++++best+=+info;
++++if+(best+!=+null)
++++++++emailIntent.setClassName(best.activityInfo.packageName,+best.activityInfo.name);

++++activity.startActivity(emailIntent);
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1118516|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>public static void openGmail(Activity activity,String[] email, String subject, String content) {
 Intent emailIntent = new Intent(Intent.ACTION_SEND);
 emailIntent.putExtra(Intent.EXTRA_EMAIL, email);
 emailIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
 emailIntent.setType("text/plain");
 emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, content);
 final PackageManager pm = activity.getPackageManager();
 final List&lt;ResolveInfo&gt; matches = pm.queryIntentActivities(emailIntent, 0);
 ResolveInfo best = null;
 for(final ResolveInfo info : matches)
 if (info.activityInfo.packageName.endsWith(".gm") || info.activityInfo.name.toLowerCase().contains("gmail"))
 best = info;
 if (best != null)
 emailIntent.setClassName(best.activityInfo.packageName, best.activityInfo.name);

 activity.startActivity(emailIntent);
}
</code></pre>

blocks|key|1118559|text|<TextView
+android:id="@%2Bid/EmailId"
+android:linksClickable="true"
+android:autoLink="email"
+android:text="info@stackoverflow.com"
+/>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1118560|这是在点击textView时发送电子邮件的最佳方法。|unstyled|1118561|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>&lt;TextView
 android:id="@+id/EmailId"
 android:linksClickable="true"
 android:autoLink="email"
 android:text="info@stackoverflow.com"
 /&gt;
</code></pre>

This is the best method to send email on click of textView.

blocks|key|903833|text|Intent+intent+=+new+Intent(Intent.ACTION_SEND).setType("text/plain")
++++++++++++++++++++++++.putExtra(Intent.EXTRA_EMAIL,+new+String[]{emails});
++++++++++++++++List<ResolveInfo>+matches+=+activity.getPackageManager().queryIntentActivities(intent,+0);
++++++++++++++++ResolveInfo+best+=+null;
++++++++++++++++for+(ResolveInfo+info+:+matches)+{
++++++++++++++++++++if+(info.activityInfo.packageName.endsWith(".gm")+%7C%7C+info.activityInfo.name.toLowerCase().contains("gmail"))+{
++++++++++++++++++++++++best+=+info;
++++++++++++++++++++}
++++++++++++++++}
++++++++++++++++if+(best+!=+null)+{
++++++++++++++++++++intent.setClassName(best.activityInfo.packageName,best.activityInfo.name);
++++++++++++++++}
++++++++++++++++activity.startActivity(intent);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|903834|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>Intent intent = new Intent(Intent.ACTION_SEND).setType("text/plain")
 .putExtra(Intent.EXTRA_EMAIL, new String[]{emails});
 List&lt;ResolveInfo&gt; matches = activity.getPackageManager().queryIntentActivities(intent, 0);
 ResolveInfo best = null;
 for (ResolveInfo info : matches) {
 if (info.activityInfo.packageName.endsWith(".gm") || info.activityInfo.name.toLowerCase().contains("gmail")) {
 best = info;
 }
 }
 if (best != null) {
 intent.setClassName(best.activityInfo.packageName,best.activityInfo.name);
 }
 activity.startActivity(intent);
</code></pre>

blocks|key|903897|text|只需将这组代码放在您的单击事件/触发器事件中，它就会直接导航到gmail原生应用程序，并预先填充所有详细信息。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|903898|所有的电子邮件属性/详细信息都在下面的代码集中(添加了注释)。|903899|Intent+intent+=+new+Intent(Intent.ACTION_SEND);
++++++++String[]+recipients+=+{"recipient@gmail.com"};//Add+multiple+recipients+here
++++++++intent.putExtra(Intent.EXTRA_EMAIL,+recipients);
++++++++intent.putExtra(Intent.EXTRA_SUBJECT,+"Mail+Subject");+//Add+Mail+Subject
++++++++intent.putExtra(Intent.EXTRA_TEXT,+"Enter+your+mail+body+here...");//Add+mail+body
++++++++intent.putExtra(Intent.EXTRA_CC,+"mailcc@gmail.com");//Add+CC+emailid's+if+any
++++++++intent.putExtra(Intent.EXTRA_BCC,+"mailbcc@gmail.com");//Add+BCC+email+id+if+any
++++++++intent.setType("text/html");
++++++++intent.setPackage("com.google.android.gm");//Added+Gmail+Package+to+forcefully+open+Gmail+App
++++++++startActivity(Intent.createChooser(intent,+"Send+mail"));|code-block|syntax|javascript|903900|#HAPPY_CODING|903901|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Just Place the set of code in your click event/trigger event and it will directly navigate you to the native gmail application with all the details pre-filled.
All the email attributes/details are there in the set of code below(Comments added).
<pre><code>Intent intent = new Intent(Intent.ACTION_SEND);
 String[] recipients = {&quot;recipient@gmail.com&quot;};//Add multiple recipients here
 intent.putExtra(Intent.EXTRA_EMAIL, recipients);
 intent.putExtra(Intent.EXTRA_SUBJECT, &quot;Mail Subject&quot;); //Add Mail Subject
 intent.putExtra(Intent.EXTRA_TEXT, &quot;Enter your mail body here...&quot;);//Add mail body
 intent.putExtra(Intent.EXTRA_CC, &quot;mailcc@gmail.com&quot;);//Add CC emailid's if any
 intent.putExtra(Intent.EXTRA_BCC, &quot;mailbcc@gmail.com&quot;);//Add BCC email id if any
 intent.setType(&quot;text/html&quot;);
 intent.setPackage(&quot;com.google.android.gm&quot;);//Added Gmail Package to forcefully open Gmail App
 startActivity(Intent.createChooser(intent, &quot;Send mail&quot;));
</code></pre>
#HAPPY_CODING

blocks|key|903969|text|您可以使用Simple+Intent.ACTION_SEND+intent为电子邮件数组设置Intent.EXTRA_EMAIL在电子邮件编辑器中为主题行设置Intent.EXTRA_SUBJECT浏览此处提供的更多额外选项->+https://developer.android.com/guide/components/intents-common#Email|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|903970|下面是一个快速代码片段|903971|Intent+intent+=+new+Intent(Intent.ACTION_SEND);
++++++++++++++++intent.setType("*/*");
++++++++++++++++intent.putExtra(Intent.EXTRA_EMAIL,+new+String[]{"test@gmail.com"});
++++++++++++++++intent.putExtra(Intent.EXTRA_SUBJECT,+"Feedback");
++++++++++++++++if+(intent.resolveActivity(ctx.getPackageManager())+!=+null)+{
++++++++++++++++++++startActivity(intent);
++++++++++++++++}|code-block|syntax|javascript|903972|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/guide/components/intents-common#Email^0|C|I|1A|I|27|K|37|1V|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|15|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

You can use Simple <code>Intent.ACTION_SEND</code> intent
set <code>Intent.EXTRA_EMAIL</code> for array of emails
set <code>Intent.EXTRA_SUBJECT</code> for subject line in email composer
Explore more EXTRA options available here -> <a href="https://developer.android.com/guide/components/intents-common#Email" rel="nofollow noreferrer">https://developer.android.com/guide/components/intents-common#Email</a>

Here's a quick code snippet 

<pre><code>Intent intent = new Intent(Intent.ACTION_SEND);
 intent.setType("*/*");
 intent.putExtra(Intent.EXTRA_EMAIL, new String[]{"test@gmail.com"});
 intent.putExtra(Intent.EXTRA_SUBJECT, "Feedback");
 if (intent.resolveActivity(ctx.getPackageManager()) != null) {
 startActivity(intent);
 }
</code></pre>

I am trying to open up Gmail Compose screen when a button is clicked in my Android App.
Do I need some API key for this from Google? or what do I need to do in my button onClickListener?

Any kind of insight is much appreciated.

How to open Gmail Compose when a button is clicked in Android App?

Android

我正在尝试打开Gmail撰写屏幕时，我的Android应用程序中的一个按钮被单击。我需要一些来自谷歌的API密钥吗？或者我需要在我的按钮onClickListener中做什么？任何类型的洞察力都是非常受欢迎的。

问在Android App中点击按钮后如何打开Gmail Compose？
EN

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问在Android App中点击按钮后如何打开Gmail Compose？
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