1.跳转

 var intent = Intent(this,SendActivity::class.java);
        intent.putExtra("kotpar","test");
        startActivity(intent);

2.接收值

  var str = intent.getStringExtra("kotpar");
        df.text=str;

3.设置状态栏的颜色

private fun setTitleColor3() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                //设置修改状态栏
                    try {
                        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
                        //设置状态栏的颜色，和你的app主题或者标题栏颜色设置一致就ok了
                        window.statusBarColor =
                            resources.getColor(com.gentle.kotlinzhengxie.R.color.selectbg);
                    }catch (e:Exception){
                        e.printStackTrace();
                    }
        }
    }

4.异常的捕获

 try {
   }catch (e:Exception){//此处区别于java代码
                        e.printStackTrace();
                    }