使用 Android SDK 阅读 Gmail 邮件

Question

我想在我的安卓应用程序中阅读Gmail邮件。有没有使用Android SDK可以做到这一点的方法？如果没有，还有哪些其他选项？解析Gmail原子文件？

- phoenix7

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这里不接受与开发相关的问题。 - Matthew Read

Answer 1

我在这里提出并回答这个问题。 您需要Gmail.java代码（问题中有一个链接），并且您必须了解不应使用未记录的提供程序。

有没有一些很好的简短的代码示例，可以简单地读取新的Gmail邮件？

- Aracem

Answer 2

使用Gmail API是可能的，以下是我发现有用的一些步骤。

1. Start with the official sample to get the GMailAPI started, see here
2. When following the instructions I found it helpful to read about the app signing here in order to get Step1+2 in the sample right.
3. With the sample running you can use the information here to access messages. You can e.g. replace the implementation in MakeRequestTask.getDataFromApi

4. Be sure to add at least the read-only scope for proper permissions. In the sample the scopes are defined in an array:

   private static final String[] SCOPES = { GmailScopes.GMAIL_LABELS, mailScopes.GMAIL_READONLY };

5. My intention was to read all subjects. I used the following code (which is the adapted getDataFromApi method from the official sample):

    private List<String> getDataFromApi() throws IOException {
        // Get the labels in the user's account. "me" referes to the authentized user.
        String user = "me";
        List<String> labels = new ArrayList<String>();
   
        ListMessagesResponse response = mService.users().messages().list(user).execute();
   
        for (Message message : response.getMessages()) {
   
            Message readableMessage = mService.users().messages().get(user, message.getId()).execute();
            if (readableMessage.getPayload() != null) {
                for (MessagePartHeader header : readableMessage.getPayload().getHeaders()) {
                    if (header.getName().compareToIgnoreCase("Subject") == 0) {
                        labels.add(header.getValue());
                   }
               }
           }
       }
   
       return labels;
   }
   

- anhoppe