Kotlin 谁能帮助我,如何将fragmnet移动到活动中
我使用了一个从HomeFragment到TanamanActivity的片段,我不使用意图,因为我不太理解,有人能帮我完成下面的示例代码吗Kotlin 谁能帮助我,如何将fragmnet移动到活动中,kotlin,android-activity,fragment,Kotlin,Android Activity,Fragment,我使用了一个从HomeFragment到TanamanActivity的片段,我不使用意图,因为我不太理解,有人能帮我完成下面的示例代码吗 override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_home) val homeFragment = HomeFragment() va
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_home)
val homeFragment = HomeFragment()
val tanamanActivity = TanamanActivity()
val personFragment = PersonFragment()
makeCurrentFragment(homeFragment)
bottom_navigation.setOnNavigationItemSelectedListener {
when (it.itemId){
R.id.ic_home -> makeCurrentFragment(homeFragment)
R.id.ic_tanaman -> tanamanActivity
R.id.ic_person -> makeCurrentFragment(personFragment)
}
true
}
}
private fun makeCurrentFragment(fragment: Fragment) =
supportFragmentManager.beginTransaction().apply {
replace(R.id.fl_wrapper, fragment)
commit()
}
}
您应该使用Intent开始新的活动。示例代码:
startActivity(Intent(this, TanamanActivity::class.java))
Intentconstrutor接受两个参数:
是这样吗?
val homeFragment=homeFragment()val tanamanavity=tanamanavity()val personFragment=personFragment()startActivity(Intent(this,tanamanavity::class.java))
@HafidSuhanizar您不应该使用构造函数创建活动实例。在NavigationItemSelectedListener中使用我的代码,而不是TamacaActivity。R.id.ic\u home->makeCurrentFragment(homeFragment)R.id.ic\u tanaman->startActivity(Intent(this,tanamanaActivity::class.java))R.id.ic\u person->makeCurrentFragment(personFragment)
是这样的吗?