Task (4.3) - 새로운 task 생성 [FLAG_ACTIVITY_SINGLE_TOP & launchMode="singleTop"]

새로운 task 생성하기

◼ Manifest

android:launchMode = ["standard" | "singleTop" | "singleTask" | "singleInstance"]

 

◼ Intent flag

FLAG_ACTIVITY_SINGLE_TOP

FLAG_ACTIVITY_NEW_TASK

FLAG_ACTIVITY_MULTIPLE_TASK

FLAG_ACTIVITY_SINGLE_TOP

대상 task 는 하나의 instance 만 사용한다.

활성화 될 task 의 top 에 같은 activity 가 존재할 경우, 새로운 activity 를 top 으로 올리지 않고 기존의 top 을 재사용.

(launchMode="singleTop" 과 FLAG_ACTIVITY_SINGLE_TOP 은 동일한 기능이다)

 

A1 activity 가 A2 activity 를 활성화 하고 A2 는 다시 자신을 활성화 하는 예를 들면 아래와 같다.

 

◼ FLAG_ACTIVITY_SINGLE_TOP 이 아닌 경우

 

 

◼ FLAG_ACTIVITY_SINGLE_TOP

Code

A2 activity

	Intent intent = new Intent(getApplication(), A2.class);
	intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
	startActivity(intent);

view raw a2.java hosted with ❤ by GitHub

 

Manifest

	<?xml version="1.0" encoding="utf-8"?>
	<manifest xmlns:android="http://schemas.android.com/apk/res/android"
	package="com.parkho.tasksample">
	<application
	android:icon="@mipmap/ic_launcher"
	android:label="@string/app_name"
	android:theme="@style/AppTheme">
	<activity
	android:name=".A1">
	<intent-filter>
	<action android:name="android.intent.action.MAIN" />
	<category android:name="android.intent.category.LAUNCHER" />
	</intent-filter>
	</activity>
	<activity android:name=".A2" />
	</application>
	</manifest>

view raw AndroidManifest.xml hosted with ❤ by GitHub

ADB

adb shell dumpsys activity

	ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
	Display #0 (activities from top to bottom):
	Stack #1:
	Task id #136
	TaskRecord
	Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.parkho.tasksample/.A1 }
	Hist #1: ActivityRecord
	Intent { cmp=com.parkho.tasksample/.A2 }
	ProcessRecord
	Hist #0: ActivityRecord
	Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.parkho.tasksample/.A1 }
	ProcessRecord

view raw logcat hosted with ❤ by GitHub