我是Android的新手,尤其是Kotlin开发上的人。
如何从标题开始,我试图了解如何实现这一点: 我有一个带有一些按钮和文本视图的活动。我将实现在UI上单击5次后打开的隐藏片段。该片段工作看起来像活动。我能够正确打开片段并正确设置布局。我不知道如何从活动到片段替换按钮活动设置。我对textview有同样的问题。我该如何实现? 预先感谢。
在这里打开片段的Activity Kotlin部分:
grpc
科特林片段课:
override fun onTouchEvent(event: MotionEvent): Boolean {
var eventaction = event.getAction()
if (eventaction == MotionEvent.ACTION_UP) {
//get system current milliseconds
var time = System.currentTimeMillis()
//if it is the first time, or if it has been more than 3 seconds since the first tap ( so it is like a new try), we reset everything
if (startMillis == 0L || (time-startMillis> 3000) ) {
startMillis=time
count=1
}
//it is not the first, and it has been less than 3 seconds since the first
else{ // time-startMillis< 3000
count++
}
if (count==5) {
// Log.d("tag","start hidden layout")
// Get the text fragment instance
val textFragment = MyFragment()
val mytostring =board_status_tv.toString()
val mArgs = Bundle()
mArgs.putString(BOARDSTATE, mytostring)
textFragment.setArguments(mArgs)
// Get the support fragment manager instance
val manager = supportFragmentManager
// Begin the fragment transition using support fragment manager
val transaction = manager.beginTransaction()
// Replace the fragment on container
transaction.replace(R.id.fragment_container,textFragment)
transaction.addToBackStack(null)
// Finishing the transition
transaction.commit()
}
return true
}
return false
}
答案 0 :(得分:1)
请注意,您需要先获取Text,然后再将其转换为字符串,如第二行所示。
board_status_tv .getText()。 toString()
DataIntegrityViolationException
希望这可以解决您的问题