[Anko]使用anko alert示例

alert { 
      customView { 
          verticalLayout { 
         //对话框标题 
          toolbar {
         id = R.id.dialog_toolbar                                lparams(width = matchParent, height = wrapContent) 
         backgroundColor = ContextCompat.getColor(ctx, R.color.colorAccent) 
        title = "What's your next milestone?"                                setTitleTextColor(ContextCompat.getColor(ctx, android.R.color.white)) 
         } 
       val task = editText { 
              hint = "To do task "
             padding = dip(20) 
       } 
        positiveButton("Add") { 
              if(task.text.toString().isEmpty()) { 
                toast("Oops!! Your task says nothing!") 
               }                                else { 
             adapter.add(task.text.toString())                                    showHideHintListView(todoList!!) 
               } 
            }
         } 
       }
    }.show()

context?.alert("You are forced to be offline. Please try to login again.") {
                title = "Warning"
                isCancelable = false
                positiveButton("OK" ){
                    ActivityCollector.finishAll()
                    context.startActivity<LoginActivity>()
                }
            }?.show()