科特林与片段

Question

var bundle : Bundle ? =null 

    bundle?.putString("text",text) 

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
     frag = Fragment.instantiate(context,Fragment2::class.java.name) as Fragment2 
    } 

    frag?.arguments=bundle 

    fragmentManager.beginTransaction().replace(R.id.contentPanel1,frag).commit() 

我已经写在片段1这些代码和数据传递给它

在片段2我receving捆绑为空谁能解决这个问题

var bundle : Bundle ? 
bundle = arguments 

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
    Toast.makeText(context,bundle.toString(),Toast.LENGTH_LONG).show() 
} 

Answer 1

的问题是，你不要初始化下面的bundle.look var。

val bundle = Bundle() 

bundle.putString("text",text) 

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
    frag = Fragment.instantiate(context,Fragment2::class.java.name) as Fragment2 
} 

frag?.arguments=bundle 

fragmentManager.beginTransaction().replace(R.id.contentPanel1,frag).commit()