默认启动模式下
08-15 17:05:49.064 13796-13796/? W/生命周期: onCreate
08-15 17:05:49.094 13796-13796/? W/生命周期: onStart
08-15 17:05:49.094 13796-13796/? W/生命周期: onResume
08-15 17:05:53.754 13796-13796/ W/生命周期: onPause
08-15 17:05:53.774 13796-13796/ W/Main2Activity: onCreate
08-15 17:05:53.774 13796-13796/ W/Main2Activity: onStart
08-15 17:05:53.774 13796-13796/ W/Main2Activity: onResume
08-15 17:05:54.594 13796-13796/ W/生命周期: onStop
08-15 17:05:54.594 13796-13796/ W/生命周期: onDestroy
08-15 17:06:15.764 13796-13796/ W/Main2Activity: onPause
08-15 17:06:15.834 13796-13796/ W/生命周期: onCreate
08-15 17:06:15.834 13796-13796/ W/生命周期: onStart
08-15 17:06:15.834 13796-13796/ W/生命周期: onResume
08-15 17:06:16.584 13796-13796/ W/Main2Activity: onStop
08-15 17:06:16.584 13796-13796/ W/Main2Activity: onDestroy
在singleTop启动模式下
08-15 17:17:05.003 26790-26790/? W/生命周期: onCreate
08-15 17:17:05.013 26790-26790/? W/生命周期: onStart
08-15 17:17:05.013 26790-26790/? W/生命周期: onResume
08-15 17:17:10.093 26790-26790/ W/生命周期: onPause
08-15 17:17:10.123 26790-26790/ W/Main2Activity: onCreate
08-15 17:17:10.123 26790-26790/ W/Main2Activity: onStart
08-15 17:17:10.123 26790-26790/ W/Main2Activity: onResume
08-15 17:17:10.873 26790-26790/ W/生命周期: onStop
08-15 17:17:10.873 26790-26790/ W/生命周期: onDestroy
08-15 17:17:17.333 26790-26790/ W/Main2Activity: onPause
08-15 17:17:17.403 26790-26790/ W/生命周期: onCreate
08-15 17:17:17.403 26790-26790/ W/生命周期: onStart
08-15 17:17:17.403 26790-26790/ W/生命周期: onResume
08-15 17:17:18.143 26790-26790/ W/Main2Activity: onStop
08-15 17:17:18.143 26790-26790/ W/Main2Activity: onDestroy
在singleInstance启动模式下
08-15 17:18:34.913 28581-28581/? W/生命周期: onCreate
08-15 17:18:34.913 28581-28581/? W/生命周期: onStart
08-15 17:18:34.913 28581-28581/? W/生命周期: onResume
08-15 17:18:56.883 28581-28581/ W/生命周期: onPause
08-15 17:18:56.893 28581-28581/ W/Main2Activity: onCreate
08-15 17:18:56.893 28581-28581/ W/Main2Activity: onStart
08-15 17:18:56.893 28581-28581/ W/Main2Activity: onResume
08-15 17:18:57.703 28581-28581/ W/生命周期: onStop
08-15 17:18:57.703 28581-28581/ W/生命周期: onDestroy
08-15 17:19:00.123 28581-28581/ W/Main2Activity: onPause
08-15 17:19:00.203 28581-28581/ W/生命周期: onCreate
08-15 17:19:00.203 28581-28581/ W/生命周期: onStart
08-15 17:19:00.203 28581-28581/ W/生命周期: onResume
08-15 17:19:00.953 28581-28581/ W/Main2Activity: onStop
08-15 17:19:00.953 28581-28581/ W/Main2Activity: onDestroy
08-15 17:05:49.064 13796-13796/? W/生命周期: onCreate
08-15 17:05:49.094 13796-13796/? W/生命周期: onStart
08-15 17:05:49.094 13796-13796/? W/生命周期: onResume
08-15 17:05:53.754 13796-13796/ W/生命周期: onPause
08-15 17:05:53.774 13796-13796/ W/Main2Activity: onCreate
08-15 17:05:53.774 13796-13796/ W/Main2Activity: onStart
08-15 17:05:53.774 13796-13796/ W/Main2Activity: onResume
08-15 17:05:54.594 13796-13796/ W/生命周期: onStop
08-15 17:05:54.594 13796-13796/ W/生命周期: onDestroy
08-15 17:06:15.764 13796-13796/ W/Main2Activity: onPause
08-15 17:06:15.834 13796-13796/ W/生命周期: onCreate
08-15 17:06:15.834 13796-13796/ W/生命周期: onStart
08-15 17:06:15.834 13796-13796/ W/生命周期: onResume
08-15 17:06:16.584 13796-13796/ W/Main2Activity: onStop
08-15 17:06:16.584 13796-13796/ W/Main2Activity: onDestroy
在singleTop启动模式下
08-15 17:17:05.003 26790-26790/? W/生命周期: onCreate
08-15 17:17:05.013 26790-26790/? W/生命周期: onStart
08-15 17:17:05.013 26790-26790/? W/生命周期: onResume
08-15 17:17:10.093 26790-26790/ W/生命周期: onPause
08-15 17:17:10.123 26790-26790/ W/Main2Activity: onCreate
08-15 17:17:10.123 26790-26790/ W/Main2Activity: onStart
08-15 17:17:10.123 26790-26790/ W/Main2Activity: onResume
08-15 17:17:10.873 26790-26790/ W/生命周期: onStop
08-15 17:17:10.873 26790-26790/ W/生命周期: onDestroy
08-15 17:17:17.333 26790-26790/ W/Main2Activity: onPause
08-15 17:17:17.403 26790-26790/ W/生命周期: onCreate
08-15 17:17:17.403 26790-26790/ W/生命周期: onStart
08-15 17:17:17.403 26790-26790/ W/生命周期: onResume
08-15 17:17:18.143 26790-26790/ W/Main2Activity: onStop
08-15 17:17:18.143 26790-26790/ W/Main2Activity: onDestroy
在singleInstance启动模式下
08-15 17:18:34.913 28581-28581/? W/生命周期: onCreate
08-15 17:18:34.913 28581-28581/? W/生命周期: onStart
08-15 17:18:34.913 28581-28581/? W/生命周期: onResume
08-15 17:18:56.883 28581-28581/ W/生命周期: onPause
08-15 17:18:56.893 28581-28581/ W/Main2Activity: onCreate
08-15 17:18:56.893 28581-28581/ W/Main2Activity: onStart
08-15 17:18:56.893 28581-28581/ W/Main2Activity: onResume
08-15 17:18:57.703 28581-28581/ W/生命周期: onStop
08-15 17:18:57.703 28581-28581/ W/生命周期: onDestroy
08-15 17:19:00.123 28581-28581/ W/Main2Activity: onPause
08-15 17:19:00.203 28581-28581/ W/生命周期: onCreate
08-15 17:19:00.203 28581-28581/ W/生命周期: onStart
08-15 17:19:00.203 28581-28581/ W/生命周期: onResume
08-15 17:19:00.953 28581-28581/ W/Main2Activity: onStop
08-15 17:19:00.953 28581-28581/ W/Main2Activity: onDestroy
解决方案 »
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启动模式, 只是控制activiy栈的.
默认模式: 只要是startacitivity, 就会创建一个新的,放到栈顶.
singleInstance 只允许栈中有一个activity, 其它activity都不能加入到这个栈中.
singleTop 如果栈顶已经是需要的activity, 就不会创建新实例.
singleTask 如果栈的任意地方有这个acitivity, 就弹出它上面的全部activity, 直到把目标activity弹到栈顶.