kotlin牛逼的语法，baseActivity

BaseActivity kotlin 简单Toast事例代码

abstract class BaseActivity : Activity(){
    
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
         initView()
        initData()
    }

    abstract fun initData()

    abstract fun initView()
    protected fun toast(ctx : Context,toast_text : String,toast_time:Int = Toast.LENGTH_SHORT){
        Toast.makeText(ctx,toast_text,toast_time).show()
    }

}
继承BaseActivity的使用方法

toast(this,"this is my world")
toast(this,"this is my wrold",

 Toast.LENGTH_SHORT

)
--------------------
toast_time : Int
在子类里面可被重新定义
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