Android Studio mailto Intent 不显示主题和邮件正文

Question

我正在尝试从我的 Android 应用程序发送电子邮件。单击一个按钮，gmail 应该会打开并显示一封新电子邮件，其中包含我之前定义的收件人、主题和电子邮件正文。到目前为止，我已经尝试发送 Intent.ACTION_VIEW 以及 Intent.ACTION_SENDTO。两者都只向收件人显示我的草稿。主题和消息都被压缩了。奇怪的是在使用模拟器时，它工作得很好。还试图锁定android错误日志。好像我没有权限。这真的是权限问题还是其他问题？ 我真的很感激任何帮助 干杯

这是我的代码：

• 通过 ACTION_VIEW 发送电子邮件

Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("mailto:" + to));
intent.putExtra(intent.EXTRA_SUBJECT, subject);
intent.putExtra(intent.EXTRA_TEXT, message);
mainActivity.startActivity(intent);

• 通过 ACTION_SENDTO 发送电子邮件

Intent email = new Intent(Intent.ACTION_SENDTO);
email.setType("message/rfc822");
email.putExtra(Intent.EXTRA_EMAIL, new String[]{to});
email.putExtra(Intent.EXTRA_SUBJECT, subject);
email.putExtra(Intent.EXTRA_TEXT, message);
mainActivity.startActivity(Intent.createChooser(email, "Choose an Email client :"));

• 来自 logcat 的错误消息

2019-12-13 01:30:35.172 29268-29268/? E//system/bin/webview_zygote32: failed to make and chown /acct/uid_99044: Permission denied
2019-12-13 01:30:35.172 29268-29268/? E/Zygote: createProcessGroup(99044, 0) failed: Permission denied
2019-12-13 01:30:35.206 29289-29289/? E/asset: setgid: Operation not permitted
2019-12-13 01:30:35.226 29296-29296/? E/asset: setgid: Operation not permitted
2019-12-13 01:30:35.355 29268-29268/? E/Typeface: Error mapping font file /system/fonts/NotoSansKhmer-Regular.ttf
2019-12-13 01:30:35.356 29268-29268/? E/Typeface: Error mapping font file /system/fonts/NotoSansKhmer-Bold.ttf
2019-12-13 01:30:35.356 29268-29268/? E/Minikin: Could not get cmap table size!
2019-12-13 01:30:35.356 29268-29268/? E/Typeface: Unable to load Family: null:und-Khmr
2019-12-13 01:30:35.484 29268-29268/? E/Typeface: Error mapping font file /system/fonts/LGAka_Light.ttf
2019-12-13 01:30:35.484 29268-29268/? E/Minikin: Could not get cmap table size!
2019-12-13 01:30:35.484 29268-29268/? E/Typeface: Unable to load Family: lg-lgaka:null
2019-12-13 01:30:35.816 29342-29342/? E//system/bin/webview_zygote32: failed to make and chown /acct/uid_99045: Permission denied
2019-12-13 01:30:35.816 29342-29342/? E/Zygote: createProcessGroup(99045, 0) failed: Permission denied
2019-12-13 01:30:35.842 29354-29354/? E/asset: setgid: Operation not permitted
2019-12-13 01:30:35.864 29367-29367/? E/asset: setgid: Operation not permitted
2019-12-13 01:30:36.139 29342-29342/? E/Typeface: Error mapping font file /system/fonts/NotoSansKhmer-Regular.ttf
2019-12-13 01:30:36.139 29342-29342/? E/Typeface: Error mapping font file /system/fonts/NotoSansKhmer-Bold.ttf
2019-12-13 01:30:36.139 29342-29342/? E/Minikin: Could not get cmap table size!
2019-12-13 01:30:36.139 29342-29342/? E/Typeface: Unable to load Family: null:und-Khmr
2019-12-13 01:30:36.362 29342-29342/? E/Typeface: Error mapping font file /system/fonts/LGAka_Light.ttf
2019-12-13 01:30:36.362 29342-29342/? E/Minikin: Could not get cmap table size!
2019-12-13 01:30:36.362 29342-29342/? E/Typeface: Unable to load Family: lg-lgaka:null
2019-12-13 01:30:36.523 4349-4359/? E/GBMv2: FPS Scaler: EXP
2019-12-13 01:30:36.602 29342-29342/? E/WebViewFactory: can't load with relro file; address space not reserved
2019-12-13 01:30:37.058 29220-29220/? E/Gmail: Gmail:EditWebView JS Console: b/119949571:draft.editor.onLoad; source: file:///android_asset/draft_editor_gmail_compiled.js at 89
2019-12-13 01:30:37.146 29220-29220/? E/Gmail: Gmail:EditWebView JS Console: b/119949571:draft.editor.onLoad is finished; source: file:///android_asset/draft_editor_gmail_compiled.js at 90

Answer 1

我认为我们遇到了同样的问题。 Android API 29 引入了一些关于向其他应用发送数据的改进。在此处查看更多详细信息：Sending simple data to other apps

这是适合我的解决方案。

Intent selectorIntent = new Intent(Intent.ACTION_SENDTO);
selectorIntent.setData(Uri.parse("mailto:"));

final Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.putExtra(Intent.EXTRA_EMAIL, new String[]{"address@mail.com"});
emailIntent.putExtra(Intent.EXTRA_SUBJECT, "The subject");
emailIntent.putExtra(Intent.EXTRA_TEXT, "The email body");
emailIntent.setSelector( selectorIntent );

activity.startActivity(Intent.createChooser(emailIntent, "Send email..."));

简而言之，您需要使用 Android 标准应用选择器，此外，您还指定要发送电子邮件。因此，结果，电子邮件客户端只会出现。 如果用户只安装了一个电子邮件客户端，intent 将立即重定向到它。

希望这对你也有帮助。

Answer 2

试试这个代码，它对我有用。

Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto:")); // only email apps should handle this
intent.putExtra(Intent.EXTRA_EMAIL, new String[]{email});
intent.putExtra(Intent.EXTRA_SUBJECT, "Subject here");
intent.putExtra(Intent.EXTRA_TEXT,"Body Here");
if (intent.resolveActivity(getPackageManager()) != null) {
    startActivity(intent);
}

还在 android manifest 中添加意图过滤器。

<activity ...>
<intent-filter>
    <action android:name="android.intent.action.SENDTO" />
    <data android:scheme="mailto" />
    <category android:name="android.intent.category.DEFAULT" />
</intent-filter>

Answer 3

为了让它在三星和 Pixel 设备上运行，我们必须在 url 和附加参数上添加参数

val email = "xxxx@xxxx.com"
val subject = "xxxx"
val body = "xxxx"

val selectorIntent = Intent(Intent.ACTION_SENDTO)
val urlString = "mailto:" + Uri.encode(email) + "?subject=" + Uri.encode(subject) + "&body=" + Uri.encode(body)
selectorIntent.data = Uri.parse(urlString)

val emailIntent = Intent(Intent.ACTION_SEND)
emailIntent.putExtra(Intent.EXTRA_EMAIL, arrayOf(email))
emailIntent.putExtra(Intent.EXTRA_SUBJECT, subject)
emailIntent.putExtra(Intent.EXTRA_TEXT, body)
emailIntent.selector = selectorIntent

startActivity(Intent.createChooser(emailIntent, "Send email"))

Answer 4

我们用于电子邮件的旧代码几天前就停止工作了。

是这样的：

public static void shareTextToEmail(Context context, String[] email, String subject, String text)
    Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.parse("mailto:" + TextUtils.join(",", email)));
    emailIntent.putExtra(Intent.EXTRA_EMAIL, email);
    emailIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
    emailIntent.putExtra(Intent.EXTRA_TEXT, text);
    try {
        context.startActivity(Intent.createChooser(emailIntent, context.getString(R.string.share_email_title)));
    } catch (android.content.ActivityNotFoundException e) {
        Toast.makeText(context, context.getString(R.string.share_no_intent_handler_found), Toast.LENGTH_SHORT).show();
    }
}

我根据 Zak.Antonio 的回答采用了它：

public static void shareTextToEmail(Context context, String[] email, String subject, String text)
    Intent selectorIntent = new Intent(Intent.ACTION_SENDTO);
    selectorIntent.setData(Uri.parse("mailto:"));

    final Intent emailIntent = new Intent(Intent.ACTION_SEND);
    emailIntent.putExtra(Intent.EXTRA_EMAIL, email);
    emailIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
    emailIntent.putExtra(Intent.EXTRA_TEXT, text);
    emailIntent.setSelector(selectorIntent);

    try {
        context.startActivity(Intent.createChooser(emailIntent, context.getString(R.string.share_email_title)));
    } catch (android.content.ActivityNotFoundException e) {
        Toast.makeText(context, context.getString(R.string.share_no_intent_handler_found), Toast.LENGTH_SHORT).show();
    }
}

重点是：

• 在emailIntent 中将Intent.ACTION_SENDTO 替换为Intent.ACTION_SEND
• 将Intent.ACTION_SENDTO 移动到selectorIntent
• 不要将电子邮件放在意图数据中，仅将它们放在附加信息中 Intent.EXTRA_EMAIL

Answer 5

这个答案对我使用 Uri 进行解析对我有用

Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.parse("mailto:?subject=" + subject + "&to=" + to));
 context.startActivity(emailIntent);

Answer 6

试试这个代码

    val emailIntent = Intent(Intent.ACTION_SEND)
    emailIntent.setType("text/plain")
    emailIntent.putExtra(Intent.EXTRA_EMAIL, arrayOf("jon@example.com")) 
    emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Email subject")
    emailIntent.putExtra(Intent.EXTRA_TEXT, "Email message text")
    val packageManager = packageManager
    val activities = packageManager.queryIntentActivities(emailIntent, 0)
    val isIntentSafe = activities.size > 0
    if (isIntentSafe) {
        startActivity(emailIntent);
    }else{
        Log.d("MainActivty","Email App not installed");
    }

Answer 7

在运行 Android 10 的三星上似乎既不能向 SENDTO 意图添加 Extras，也不能使用 selectorIntent。对电子邮件地址、主题和正文进行编码的 Uri 似乎在运行 Android 10 及更低版本的多台设备上效果最佳。 EmailIntentLibrary 对解决使 URI 编码适用于复杂正文内容的细节有很大帮助。

val email = Uri.encode("xxxx@xxxx.com")
val subject = Uri.encode("xxxx")
val body = Uri.encode("some body. one two & more. \n new line \n &%>?")
val uri = "mailto:$email?subject=$subject&body=$body"
val intent = Intent(Intent.ACTION_SENDTO)
intent.type = "text/plain"
intent.data = Uri.parse(uri)
startActivity(intent)

如果您对在选择器中有很多选项感到满意，下面来自 Android Development Guide 的示例确实有效（用于过滤这些选项的 ACTION_SENDTO 示例对我不起作用）

fun composeEmail(addresses: Array<String>, subject: String, attachment: Uri) {
    val intent = Intent(Intent.ACTION_SEND).apply {
        type = "*/*"
        putExtra(Intent.EXTRA_EMAIL, addresses)
        putExtra(Intent.EXTRA_SUBJECT, subject)
        putExtra(Intent.EXTRA_STREAM, attachment)
    }
    if (intent.resolveActivity(packageManager) != null) {
        startActivity(intent)
    }
}

Answer 8

如果您的应用面向 Android 11（API 级别 30）或更高版本，那么我们需要添加：

• <queries> 应用程序清单文件中的元素（因为 Package visibility Android 11 中的更改）

像这样在 Manifest 中设置queries：

<manifest package="com.example.app">
    ...
    <!-- Package visibility -->
    <queries>
        <!-- Mail -->
        <intent>
            <action android:name="android.intent.action.SENDTO" />
            <data android:scheme="mailto" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent>
    </queries>
    ...
</manifest>

Kotlin 方法打开电子邮件应用程序：

fun composeEmail(recipient: String, subject: String, body: String) {
    val selectorIntent = Intent(Intent.ACTION_SENDTO).apply{
        data = Uri.parse("mailto:") // only email apps should handle this
    }
    val emailIntent = Intent(Intent.ACTION_SEND).apply {
        putExtra(Intent.EXTRA_EMAIL, arrayOf(recipient))
        putExtra(Intent.EXTRA_SUBJECT, subject)
        putExtra(Intent.EXTRA_TEXT, body)
        selector = selectorIntent
    }
    if (emailIntent.resolveActivity(packageManager) != null) {
        startActivity(emailIntent)
    }
}

Answer 9

非常感谢，在我没有使用选择器意图之前，唯一对我有用的针对 Android 31 的解决方案；）谢谢