如何做到从Android的2意向过滤器更换到Android 4？ [英] How did intent-filter change from Android 2 to Android 4?

问题描述

我有以下意图过滤器在我的Andr​​oidManifest.xml这工作得很好Android中2.xx的，不会做的Andr​​oid 4.xx的东西：

I have the following intent-filter in my AndroidManifest.xml which works perfectly well in Android 2.x.x and does not do anything in Android 4.x.x:

  <intent-filter
    android:icon="@drawable/ic_fx_603p_pf"
    android:label="FX-603P Program File"
    android:priority="1"
  >
    <category
      android:name="android.intent.category.DEFAULT"
    ></category>
    <action
      android:name="android.intent.action.VIEW"
    ></action>
    <data
      android:host="*"
      android:pathPattern=".*\\.pf"
      android:scheme="file"
    ></data>
  </intent-filter>

现在的问题是：什么都有变化，我该怎么做的意图再次工作

The question is: What has changes and how can I make the intent work again?

预期的行为：在选择与文件* PF 扩展的文件管理器（如天文）我的应用程序应该被启动，该文件应打开。另外，文件管理器应该使用我们提供的图标以可视化的文件。

The expected behaviour: In selecting a file with *.pf extension in a file-manger (like Astro) my application should be started and the file should be opened. Also the file-manger should use us the provided icon to visualize the file.

推荐答案

：MIMETYPE 不是强制性的。因此该解决方案是：

Well after some experimenting I found out that android:mimeType is not mandatory. Therefore the solution is:

  <intent-filter
    android:icon="@drawable/ic_fx_602p_pf"
    android:label="FX-602P Program File"
    android:priority="1"
  >
    <category
      android:name="android.intent.category.DEFAULT"
    ></category>
    <action
      android:name="android.intent.action.VIEW"
    ></action>
    <data
      android:host=""
      android:mimeType="*/*"
      android:pathPattern=".*\\.pf"
      android:scheme="file"
    ></data>
    <data
      android:host="*"
      android:mimeType="application/x-fx-602p.program"
    ></data>
  </intent-filter>

随着一点点额外的我发现了一个＆LT;意向滤光器＆gt; 可以拥有两个或多个＆lt;数据＆GT; 标签。如果任何一个比赛的目的是叫（逻辑OR）

As a little extra I found out that an <intent-filter> can have two ore more <data> tags. If either match the intent is called (logical OR)

在标签内的所有属性必须匹配（逻辑AND）。

Inside a tag all attributes must match (logical AND).

但没有与此解决方案的一个问题：它似乎没有在安卓2.x中的错误和＆LT的属性;数据＆GT; 不严格处理逻辑并导致所有文件被匹配时，安卓MIMETYPE 属性设置。不错啊，你不能两者兼得，将与未来去，如果是这样的话。

However there is a problem with this solution: It seems there is a bug in Android 2.x and the attributes of the <data> are not strictly treated logical AND resulting in all files being matched when the android:mimeType attribute is set. Ah well, you can't have it both ways and will go with the future if that is the case.

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