android - Intent 对象未触发 Intent 过滤器

Question

也许我误解了 Intent 和 intent-filter 的工作原理，但在我看来，这应该是一个简单的情况。但是，它不起作用。

这是我发送的 Intent :

Intent i = new Intent(Intent.ACTION_VIEW);
i.setType("vnd.android.cursor.item/vnd.connectsy.event");
startActivity(i);

这是 Intent 过滤器:

<activity android:name=".events.EventView">
    <intent-filter>
        <action android:name="android.intent.action.VIEW" />
        <data android:mimeType="vnd.android.cursor.item/vnd.connectsy.event" />
    </intent-filter>
</activity>

最后，我收到的错误:

android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW typ=vnd.android.cursor.item/vnd.connectsy.event }

Answer 1

Here's the answer :

Android treats all implicit intents passed to startActivity() as if they contained at least one category: "android.intent.category.DEFAULT" (the CATEGORY_DEFAULT constant). Therefore, activities that are willing to receive implicit intents must include "android.intent.category.DEFAULT" in their intent filters.

添加

<category android:name="android.intent.category.DEFAULT" />

到 AndroidManifest.xml 中的 Intent 过滤器