<<Android开发艺术探索>>读书笔记--Activity LaunchMode

(A、B、C、D分别为Activity A、Activity B、Activity C、Activity D简写,

ActivitySingleTask为android:launchMode="singleTask"的Activity

ActivitySingleInstance为android:launchMode="singleInstance"的Activity)

1. standard:Activity的默认启动模式,

standard-demo0: 使用getApplicationContext()为Context时,会抛出异常.(修改StandModeTestcase.demo0(Context))

2. singleTop: 

singleTop-demo0:

    A: Intent.FLAG_ACTIVITY_SINGLE_TOP

    B: 

    C:

    ABCA->ABCA

singleTop-demo1:

    A:

    B:

    C: Intent.FLAG_ACTIVITY_SINGLE_TOP

    ABCC->ABC

3. singleTask:

singleTask-demo0:

    A: Intent.FLAG_ACTIVITY_NEW_TASK

    B:

    C:

    ABCA->ABC

singleTask-demo1:

    A: Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK

    B:

    C:

    ABCA->A

    onCreateA() onCreateB() onCreateC() onCreateA() onDestroyA() onDestroyB() onDestroyC()

singleTask-demo2:

    ActivitySingleTask:

    B:

    C:

    ActivitySingleTask B C ActivitySingleTask -> ActivitySingleTask

    onCreateSingleTask() onCreateB() onCreateC() onNewIntentSingleTask() onDestroyB() onDestroyC()

4. singleInstance: 

singleInstance-demo0:

    ActivitySingleInstance:

    B:

    C:

    ActivitySingleInstance B C ActivitySingleInstance -> B C ActivitySingleInstance

    onCreateSingleInstance() onCreateB() onCreateC() onNewIntentSingleInstance()

参考代码：https://github.com/afunx/AndroidDemo365/tree/master/AndroidDemo365/ActivityLaunchMode