Intent to start activity - but don't bring to front

问题

Description:

• Activity A is visible (or in the background)
• Intent I is received by a broadcast with valuable extras and then passes the extras to a new Intent I2 that will be used to start activity A.
• Outcome: Do not bring activity to front if activity is in background.

Code:

Intent I2= new Intent(context, MyActivity.class); 
I2.putExtra(..
I2.setFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK); // | Intent.FLAG_ACTIVITY_NEW_TASK); 
context.startActivity(I2);

Note: I added no "android:taskAffinity" to manifest.. i thought you should know

回答1:

if you want your activity to be in background add this line in the oncreate of activity

moveTaskToBack(true);

回答2:

You can use this line in your onCreate() method:

moveTaskToBack(true);

回答3:

You don't want to start an Activity in the background. There are better ways to do what you want. You can have your Activity register to receive the broadcast Intent, for example. It will get the call to onReceive() even if it is in the background. You can determine if your Activity is in the background by setting a variable to true in onPause() and to false in onResume(). Then in onReceive(), if the variable is true you are in the background.

来源：https://stackoverflow.com/questions/10008879/intent-to-start-activity-but-dont-bring-to-front