Android kotlin使用註解實現防按鈕連點功能的示例

@Retention(AnnotationRetention.RUNTIME)
@Target(AnnotationTarget.FUNCTION)
annotation class SingleClick(
  // 點擊間隔時間，毫秒
  val value: Long = 500
)

import android.os.SystemClock
import org.aspectj.lang.ProceedingJoinPoint
import org.aspectj.lang.annotation.Around
import org.aspectj.lang.annotation.Aspect
import org.aspectj.lang.annotation.Pointcut
import org.aspectj.lang.reflect.MethodSignature

@Aspect
class SingleClickAspect {

  /**
   * 定義切點，標記切點為所有被@SingleClick註解的方法
   * 註意：這裡 你的包名.SingleClick 需要替換成
   * 你自己項目中SingleClick這個類的全路徑
   */
  @Pointcut("execution(@你的包名.SingleClick * *(..))")
  fun methodAnnotated() { }

  /**
   * 定義一個切面方法，包裹切點方法
   */
  @Around("methodAnnotated()")
  @Throws(Throwable::class)
  fun aroundJoinPoint(joinPoint: ProceedingJoinPoint) {
    try {
      // 取出方法的註解
      val signature = joinPoint.signature as MethodSignature
      val method = signature.method
      // 檢查方法是否有註解
      val hasAnnotation = method != null && method.isAnnotationPresent(SingleClick::class.java)
      if (hasAnnotation) {
        // 計算點擊間隔，沒有註解默認500，有註解按註解參數來，註解參數為空默認500；
        val singleClick = method.getAnnotation(SingleClick::class.java)
        val interval = singleClick.value
        // 檢測間隔時間是否達到預設時間並且線程空閑
        if (canClick(interval)) {
          joinPoint.proceed()
        }
      } else {
        joinPoint.proceed()
      }
    } catch (e: Exception) {
      // 出現異常不攔截點擊事件
      joinPoint.proceed()
    }
  }

  // 判斷是否響應點擊
  private fun canClick(interval: Long): Boolean {
    val time = SystemClock.elapsedRealtime()
    val timeInterval = Math.abs(time - mLastClickTime)
    if (timeInterval > interval) {
      mLastClickTime = time
      return true
    }
    return false
  }

  companion object {
    // 最後一次點擊的時間
    private var mLastClickTime: Long = 0
  }

}

buildscript {
  dependencies {
    classpath 'com.hujiang.aspectjx:gradle-android-plugin-aspectjx:2.0.4'
  }
}

plugins {
  id 'android-aspectjx'
}

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context=".MainActivity">

  <TextView
    android:onClick="onTextClick"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

class MainActivity : AppCompatActivity() {
  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
  }

  @SingleClick(800)
  fun onTextClick(view: View) {

  }
}