Android ボタンの共通化

フラグメントで共通ボタン記述。

フラグメント内のstartボタンでリスナーを記述。

CommonButtonFragment.kt

    override fun onStart(){
        super.onStart()
        btToday.setOnClickListener{onCommonButtonClick(it)}
        btCreate.setOnClickListener{onCommonButtonClick(it)}
    }

共通ボタンファンクション

CommonButtonFragment.kt

private fun onCommonButtonClick(view: View?){
        if(view != null) {
            if(activity != null) {
                //login画面の場合
                if (activity!!.localClassName == "TodayToDoTaskLoginActivity" || activity!!.localClassName == "TaskCreateLoginActivity") {
                    when (view.id) {
                        R.id.btToday -> {
                            val intent = Intent(activity, TodayToDoTaskLoginActivity::class.java)
                            startActivity(intent)
                        }
                        R.id.btCreate -> {
                            val intent = Intent(activity, TaskCreateLoginActivity::class.java)
                            startActivity(intent)
                        }
                    }
                //login画面以外の場合
                } else {
                    when (view.id) {
                        R.id.btToday -> {
                            val intent = Intent(activity, TodayToDoTaskActivity::class.java)
                            startActivity(intent)
                        }
                        R.id.btCreate -> {
                            val intent = Intent(activity, TaskCreateActivity::class.java)
                            startActivity(intent)
                        }
                    }
                }
            }
        }
    }