Calling getIntent Method in service

问题:

I have to pass parameter from MyActivity.class to TestService.class. MyActivity is a Activity class and TestService is a Service that I have made for sending messages. I have to pass parameter from Activity to the Service, but when I call Intent i = getIntent(); in service class, I am getting an error getIntent() is undefined.

So, how can I send parameters from my Activity to Service?

回答1:

Start your service like this;

 Intent ir=new Intent(this, Service.class); 
 ir.putExtra("data", data); 
 this.startService(ir); 

You attach your data as an intent extra.

Then to retrieve the data from the service;

data=(String) intent.getExtras().get("data"); 

So you can access your parameter from either the onHandleIntent or onStartCommand Intent parameter. (depending on which type of service you are running) For Example;

Service

protected void onStartCommand (Intent intent, int flags, int startId) {
    data=(String) intent.getExtras().get("data"); 
}

public int onStartCommand (Intent intent, int flags, int startId)

IntentService

protected void onHandleIntent(Intent intent) {
    data=(String) intent.getExtras().get("data"); 
}

protected abstract void onHandleIntent (Intent intent)

回答2:

When you start Service with intent(having Data) then that intent is received in method
onStart(Intent intent, int startId) or

onStartCommand (Intent intent, int flags, int startId)
{
this **intent** is your intent with data
}

of your Service.So receive your data from this method having intent as parameter