NFC读取型动物活动标签全自动无问哪里处理标签 [英] NFC read TAGS in differents Activities automaticly without ask where process the TAGS
问题描述
我想读在不同Activites没有任何标记出现在我的显示屏，哪些活动是最适合读这个标签？我想这应该是自动的。 我的code清单是这样的：
I want to read in different Activites any TAG without appear in my display, what Activity is the best for read this tag? I think this should be automatic. My code manifest is this:
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.iprocuratio.strim.LoginActivity"
android:label="@string/title_activity_login" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.iprocuratio.strim.TemperatureActivity"
android:label="@string/title_activity_temperature" >
</activity>
<activity
android:name="com.iprocuratio.strim.ConstantsActivity"
android:label="@string/title_activity_constants" >
</activity>
<activity
android:name="com.iprocuratio.strim.FC"
android:label="@string/title_activity_fc" >
</activity>
<activity
android:name="com.iprocuratio.strim.FR"
android:label="@string/title_activity_fr" >
</activity>
<activity
android:name="com.iprocuratio.strim.SatO2"
android:label="@string/title_activity_sat_o2" >
</activity>
<activity
android:name="com.iprocuratio.strim.MainActivity"
android:label="@string/app_name" >
</activity>
<activity
android:name="com.iprocuratio.strim.PrescriptionsActivity"
android:label="@string/title_activity_prescriptions">
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
</activity>
<activity
android:name="com.iprocuratio.strim.MedicamentosActivity"
android:label="@string/title_activity_medicamentos" >
</activity>
<activity
android:name="com.iprocuratio.strim.Identificacion"
android:label="@string/title_activity_identificacion" >
<intent-filter >
<action android:name="com.google.zxing.client.android.SCAN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.iprocuratio.strim.Pantallaleer"
android:label="@string/title_activity_pantallaleer" >
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
</activity>
<activity
android:name="com.iprocuratio.strim.IdentificacionFinal"
android:label="@string/title_activity_identificacion_final" >
</activity>
</application>
我已经实现了读取标签中的两项活动：
prescriptionsActivity和Pantallaleer。
例如，当我想读的prescriptionsActivity一个TAG总是出现下一个图像：
I have implemented the read the TAG in two activities: PrescriptionsActivity and Pantallaleer. For example, when I want to read a TAG in PrescriptionsActivity always appear the next image:
我想，当我读取标签不显示该窗口，并全自动选择正确的活动。 任何人都知道，我该怎么办？ 难道我的code正确？
I would like that when I read the TAG it doesn't show this window and it automaticly choose the correct activity. Anyone know, how can I do? Is my code correct?
让我知道。谢谢你。
问候。
推荐答案
这两项活动都在同一个意向敏感（在包含文字实录标签（或即双触发类型文本的MIME类型的记录/平）：
Both activities are sensitive on the same intent (i.e. both trigger on tags that contain a Text record (or a MIME type record of type text/plain):
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
这是不可能的Android告诉一下活动将更好地适应需求，特定的标签，如果都包含相同的数据类型和两个过滤器匹配相同的数据类型。因此Android的显示的意图选择器让用户选择。
It's impossible for Android to tell what activity would better fit the needs for a specific tag if both contain the same data type and both filters match the same data type. Consequently Android shows the intent chooser to let the user select.
如果你想避免的意图选择器，你应该使用每个活动不同的数据类型（使用非常不具体text / plain的数据类型的欧洲工商管理学院）。例如，如果一个标签应启动 prescriptionsActivity ，你这样写NDEF消息标记：
If you want to avoid the intent chooser, you should use different data types for each activity (insead of using the very unspecific text/plain data type). For instance, if a tag should launch PrescriptionsActivity, you would write the following NDEF message to the tag:
+-------------------------------------------------+
| EXT:iprocuratio.com:prescriptions | <your data> |
+-------------------------------------------------+
您可以使用创建的Android这个NDEF消息
You could create this NDEF message on Android using
NdefMessage msg = new NdefMessage(
NdefRecord.createExternal("iprocuratio.com", "prescriptions", yourData),
);
意图过滤器 prescriptionsActivity 然后可以是这样的：
The intent filter for PrescriptionsActivity could then look like this:
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="vnd.android.nfc"
android:host="ext"
android:pathPrefix="/iprocuratio.com:prescriptions"/>
</intent-filter>
同样，对于 Pantallaleer 的活动，你可以使用：
Similarly, for the Pantallaleer activity, you could use:
+-------------------------------------------------+
| EXT:iprocuratio.com:pantallaleer | <your data> |
+-------------------------------------------------+
您可以使用创建的Android这个NDEF消息
You could create this NDEF message on Android using
NdefMessage msg = new NdefMessage(
NdefRecord.createExternal("iprocuratio.com", "pantallaleer", yourData),
);
意图过滤器 Pantallaleer 活动可能看起来像这样：
The intent filter for Pantallaleer activity could then look like this:
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="vnd.android.nfc"
android:host="ext"
android:pathPrefix="/iprocuratio.com:pantallaleer"/>
</intent-filter>
这篇关于NFC读取型动物活动标签全自动无问哪里处理标签的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
