当你在Android开发过程中遇到“unresolved reference: appcompat”这个错误时,这通常意味着你的项目没有正确地识别或导入AppCompat库。AppCompat库是Android Support Library的一部分,用于确保你的应用可以在不同版本的Android上保持一致的外观和行为。以下是一些解决这个问题的步骤: 确认appcompat的上下文和用途: AppCompa...
private val SCORE_KEY ="SCORE_KEY"private val TIME_LEFT_KEY ="TIME_LEFT_KEY"}overridefunonCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)setContentView(R.layout.activity_main) Log.d(TAG,"On create called. Score is $Score")setSupportActionBar(toolbar) fab.setOnClick...
MainActivity --|> AppCompatActivity MainActivity "1" --> "1" R.layout.activity_main MainActivity --> "1" TextView Journey The journey of resolving the “Unresolved reference: android” error: journey title Resolving "Unresolved reference: android" Error section Missing Dependencies Open build.g...
确实发现该模块依赖了 appcompat 库。 注:我之所以言之凿凿的说 activity 是被 appcompat 引入的而非如图中所示的第一级依赖明明是 fragment ,是因为 fragment 其实也是被 appcompat 引入,因为这两个库是相互依赖的关系。并且我的依赖中也只写了 appcompat ,并未添加 fragment ,所以才得出如上结论。 解决方法与...
Unresolved reference: ActivityMainBinding 会提示 Unresolved reference的问题,这就是今天的坑。接下来就是解决办法,本人实测通过,如果有问题,那就有问题,反正我是编译通过并把程序跑起来了。 1.首先需要在app的build.gradle的dependencies中添加如下依赖:
The activity can be opened without any errors, and renaming it also generates without any issues. However, when running, an error always occurs. Unresolved reference: databinding How I can solve this? I have already performed various clean and build operations, as well as closed and reopened An...
您应该将View声明为类级别属性,然后可以从类中的任何位置访问它们。在函数中声明的变量只能在该函数中...
第10章 使用 Kotlin 创建 DSL第10章 使用 Kotlin 创建 DSL
import kotlinx.android.synthetic.main.activity_main.*classMainActivity:AppCompatActivity() {internallateinit var tapmeButton:Button;internallateinit var GameScore:TextView;internallateinit var Timer:TextView;internalvar Score=0internalvar gameStarted=falseinternallateinit var countDownTimer:CountDownTimerinter...