Android 意图过滤器:将应用程序与文件扩展名关联

问题描述

我有一个自定义文件类型/扩展名，我想将其与我的应用相关联.

I have a custom file type/extension that I want to associate my app with.

据我所知，数据元素就是为此目的而制作的，但我无法让它工作.http://developer.android.com/guide/topics/manifest/data-element.html根据文档和很多论坛帖子，它应该是这样工作的:

As far as I know, the data element is made for this purpose, but I can't get it working.http://developer.android.com/guide/topics/manifest/data-element.htmlAccording to the docs, and a lot of forum posts, it should work like this:

<intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="android.intent.category.BROWSABLE" />
    <data android:mimeType="application/pdf" />
</intent-filter>

好吧，它不起作用.我做错了什么?我只是想声明我自己的文件类型.

Well, it does not work. What did I do wrong? I simply want to declare my own file type.

推荐答案

您需要多个意图过滤器来处理您想要处理的不同情况.

You need multiple intent filters to address different situation you want to handle.

示例1，处理没有mimetypes的http请求:

Example 1, handle http requests without mimetypes:

  <intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.BROWSABLE" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:scheme="http" />
    <data android:host="*" />
    <data android:pathPattern=".*\.pdf" />
  </intent-filter>

处理与后缀无关的 mimetypes:

Handle with mimetypes, where the suffix is irrelevant:

  <intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.BROWSABLE" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:scheme="http" />
    <data android:host="*" />
    <data android:mimeType="application/pdf" />
  </intent-filter>

处理来自文件浏览器应用的意图:

Handle intent from a file browser app:

  <intent-filter>
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.DEFAULT" />
    <data android:scheme="file" />
    <data android:host="*" />
    <data android:pathPattern=".*\.pdf" />
  </intent-filter>

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