ItemID 使用 ChipNavigationBar Android -> kotlin
ItemID using ChipNavigationBar Android -> kotlin
我在里面使用这个onCreate()
。我为主页创建了四个片段,例如,搜索和个人资料。我从 https://github.com/ismaeldivita/chip-navigation-bar
得到这个 ChipNavgation
lateinit var btm_nav : ChipNavigationBar
btm_nav = findViewById(R.id.btm_nav)
val homeFragment = HomeFragment()
val favoriteFragment = FavoriteFragment()
val searchFragment = SearchFragment()
val profileFragment = ProfileFragment()
setCurrentFragment(homeFragment)
btm_nav.setOnItemSelectedListener({
when (it.itemId) {
R.id.home -> setCurrentFragment(homeFragment)
R.id.fav -> setCurrentFragment(favoriteFragment)
R.id.search -> setCurrentFragment(searchFragment)
R.id.profile -> setCurrentFragment(profileFragment)
}
})
但此代码不是 运行,无法访问 ItemID。
错误 -> 未解析的引用:itemId
enter image description here
看图
setOnItemSelectedListener
方法回调本身返回菜单项的 id
。 it
是菜单项的id
。将 it.itemId
更改为 it
btm_nav.setOnItemSelectedListener({
when (it) {
R.id.home -> setCurrentFragment(homeFragment)
R.id.fav -> setCurrentFragment(favoriteFragment)
R.id.search -> setCurrentFragment(searchFragment)
R.id.profile -> setCurrentFragment(profileFragment)
}
})
我在里面使用这个onCreate()
。我为主页创建了四个片段,例如,搜索和个人资料。我从 https://github.com/ismaeldivita/chip-navigation-bar
lateinit var btm_nav : ChipNavigationBar
btm_nav = findViewById(R.id.btm_nav)
val homeFragment = HomeFragment()
val favoriteFragment = FavoriteFragment()
val searchFragment = SearchFragment()
val profileFragment = ProfileFragment()
setCurrentFragment(homeFragment)
btm_nav.setOnItemSelectedListener({
when (it.itemId) {
R.id.home -> setCurrentFragment(homeFragment)
R.id.fav -> setCurrentFragment(favoriteFragment)
R.id.search -> setCurrentFragment(searchFragment)
R.id.profile -> setCurrentFragment(profileFragment)
}
})
但此代码不是 运行,无法访问 ItemID。 错误 -> 未解析的引用:itemId enter image description here
看图
setOnItemSelectedListener
方法回调本身返回菜单项的 id
。 it
是菜单项的id
。将 it.itemId
更改为 it
btm_nav.setOnItemSelectedListener({
when (it) {
R.id.home -> setCurrentFragment(homeFragment)
R.id.fav -> setCurrentFragment(favoriteFragment)
R.id.search -> setCurrentFragment(searchFragment)
R.id.profile -> setCurrentFragment(profileFragment)
}
})