设备：Samsung Galaxy S4 系统：Android 5.0.1
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class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
Log.i("MainActivity", "onCreate")
}
override fun onStart() {
super.onStart()
Log.i("MainActivity", "onStart")
}
override fun onRestoreInstanceState(savedInstanceState: Bundle?) {
super.onRestoreInstanceState(savedInstanceState)
Log.i("MainActivity", "onRestoreInstanceState")
}
override fun onResume() {
super.onResume()
Log.i("MainActivity", "onResume")
}
override fun onPause() {
super.onPause()
Log.i("MainActivity", "onPause")
}
override fun onSaveInstanceState(outState: Bundle?) {
super.onSaveInstanceState(outState)
Log.i("MainActivity", "onSaveInstanceState")
}
override fun onStop() {
super.onStop()
Log.i("MainActivity", "onStop")
}
override fun onDestroy() {
super.onDestroy()
Log.i("MainActivity", "onDestroy")
}
}
启动进入前台
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com.phantomvk.playground I/MainActivity: onCreate
com.phantomvk.playground I/MainActivity: onStart
com.phantomvk.playground I/MainActivity: onResume
按Home键
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com.phantomvk.playground I/MainActivity: onPause
com.phantomvk.playground I/MainActivity: onSaveInstanceState
com.phantomvk.playground I/MainActivity: onStop
点击图标回到前台
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com.phantomvk.playground I/MainActivity: onStart
com.phantomvk.playground I/MainActivity: onResume
竖屏切换到横屏、横屏回到竖屏
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com.phantomvk.playground I/MainActivity: onPause
com.phantomvk.playground I/MainActivity: onSaveInstanceState
com.phantomvk.playground I/MainActivity: onStop
com.phantomvk.playground I/MainActivity: onDestroy
com.phantomvk.playground I/MainActivity: onCreate
com.phantomvk.playground I/MainActivity: onStart
com.phantomvk.playground I/MainActivity: onRestoreInstanceState
com.phantomvk.playground I/MainActivity: onResume
前台点击返回键
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com.phantomvk.playground I/MainActivity: onPause
com.phantomvk.playground I/MainActivity: onStop
com.phantomvk.playground I/MainActivity: onDestroy
电源键关闭屏幕
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com.phantomvk.playground I/MainActivity: onPause
com.phantomvk.playground I/MainActivity: onSaveInstanceState
com.phantomvk.playground I/MainActivity: onStop
电源键解锁回到前台
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com.phantomvk.playground I/MainActivity: onStart
com.phantomvk.playground I/MainActivity: onResume