Android reads metadata custom data under application and other nodes under the manifest file

Introduced

Android provides a custom configuration in the form of meta-date using key-value pairs. Generally used as channel identification. Can be used under the <application>,<activity>,<activity-alias>,<provider>,<receiver> node. All values are stored in the same bundle and can be used with Packageiteminfo.metadata channel data.

form of Use:

1 <meta-data android:name= "string" 2 android:resource= "Resource Specification" 3 Android:value= "string"/>

Resource and value can be used directly, but note that if you use the

1 <meta-data android:name= "Zoo" android:value= "@string/kangaroo"/>

Then you get the ID value, which is the number in the R file, not the actual resource value. Instead, use resource to fetch the resource value (using Getint ()).

1 <meta-data android:name= "Zoo" android:resource= "@string/kangaroo"/>

Android:name: Make sure it's the only thing that's OK.

Android:value: The value can be:

1. String use GetString () to get

2. Integers such as "100" are obtained using Getint ()

3. Boolean value: "True", "false" using Getboolean () to get

4. Color value: "#rgb", "#argb", "#rrggbb", or "#aarrggbb" use Getint () to get

5. Floating-point value: "1.2" Using GetFloat ()

Note: The bundle uses a return (string) O; to get the code to get a stringvalue value if you configure a string to be configured with a value of "000", but when the metadata is wrapped into bundles, "000" is parsed into an integer 0, so using GetString () will be null.

Instance:

At the end of the manifest node, add:

1 <meta-data android:value= "googleplay_v165" android:name= "Haiwan_channel"/>

In a custom application inside a method

1  PublicString gethaiwanversion () {2String channel = "";3         Try {4Channel = This. Getpackagemanager (). Getapplicationinfo (Getpackagename (), Packagemanager.get_meta_data). MetaData.getString (" Haiwan_channel ");5}Catch(namenotfoundexception e) {6 e.printstacktrace ();7         }8         returnChannel;9}

Other nodes:

1 //in the Activity app <meta-data> elements. 2Activityinfo info = This. Getpackagemanager ()3 . Getactivityinfo (Getcomponentname (), packagemanager.get_meta_data);4Info.metaData.getString ("Meta_name");5  6     //application <meta-data> elements in application. 7ApplicationInfo AppInfo = This. Getpackagemanager ()8 . Getapplicationinfo (Getpackagename (), packagemanager.get_meta_data);9AppInfo.metaData.getString ("Meta_name");Ten   One     //in service apps <meta-data> elements.  AComponentName cn =NewComponentName ( This, MetadataService.class); -ServiceInfo info = This. Getpackagemanager (). GetServiceInfo (CN, packagemanager.get_meta_data); -Info.metaData.getString ("Meta_name"); the   -     //applications <meta-data> elements in receiver.  -ComponentName cn =NewComponentName (context, metadatareceiver.class); -Activityinfo info =Context.getpackagemanager (). Getreceiverinfo (CN, packagemanager.get_meta_data); +Info.metaData.getString ("Meta_name");

Android reads metadata custom data under application and other nodes under the manifest file