Explicit/implicit startup of remote services

　　When communicating between processes, it is often designed to open a remote service. There are two ways to open a remote service, one is to open it explicitly, and the other is to open it implicitly. Let's look at them separately:

1. Implicitly open

　　Server : The configuration in AndroidManifest.xml where the Service is located is as follows, note that exported = "true", only if it is true can it be accessed by other apps, otherwise it is limited to the application.

 <service
       android:name=".BookManagerService"
       android:exported="true">
       <intent-filter>
           <action android:name="com.sl.aidl"/>
           <category android:name="android.intent.category.DEFAULT"/>
       </intent-filter>
</service>

　　Client : need to enable remote service

Intent service = new Intent();
service.setAction("com.sl.aidl"); //service 的 action 值
service.setPackage( "com.sl.binderservice" ); //The name of the package where the remote service is located 
// Binding service 
bindService(service, mConnection, Context.BIND_AUTO_CREATE); 
// Start the service
 startService(service);

Second, the display is turned on

　　Server : AndroidManifest.xml

<service android:name=".BookManagerService" android:exported="true"/>

　　Client :

public static final String NAME_REMOTE_SERVICE = "com.sl.aidl" ;
public static final String PACKAGE_REMOTE_SERVICE = "com.sl.binderservice" ;
//启动服务
Intent startIntent = new Intent ();
ComponentName componentName = new ComponentName(PACKAGE_REMOTE_SERVICE ,NAME_REMOTE_SERVICE);
startIntent .setComponent (componentName );
startService( startIntent) ;
// Binding service 
Intent startIntent = new Intent ();
ComponentName componentName = new ComponentName(PACKAGE_REMOTE_SERVICE ,NAME_REMOTE_SERVICE);
startIntent .setComponent (componentName );
bindService( startIntent, mConnection, Context.BIND_AUTO_CREATE) ;    

　　These are the two opening methods.