Pass textview data from Main Activity to 3rd Activity recyclerview Kotlin Android-CodePudding

In MainActivity I have 2 edit text and one textView. In 2nd Activity I have a viewpager image slider. 3rd activity I ceated recyclerview that contains 3 items.

private fun namelist(): ArrayList<MyData> {
        return arrayListOf(
            MyData(
                "edit text data",      
            ),
            MyData(
                "Edit text data",
            ),
           
            MyData(
                "Text view data",
            ),
        )
    }
I wanna pass those three datas (from MainActivity) to 3rd activity Recyclerview items.

[Source code here][2]


  [App flow image link]: https://i.stack.imgur.com/fsfgI.png


  [source code link]: https://github.com/sindhujaMK/PassDataBetweenActivities

CodePudding user response：

First, make sure MyData class is Parcelable.

Then when you create an intent to navigate to the other activity add array of MyData to it. Like this

val intent = Intent(this, <OtherActivity>)
intent.putParcelableArrayListExtra(<someKey>, arrayListOf(myData1, myData2))
startActivity(intent)

Then in your other activity get data like this

val myDataList = intent.getParcelableArrayListExtra<MyData>(<someKey>)

Note that you might get deprecation error on this line of code. It was deprecated in android 33 for more type-safety

This is the new way of getting data

val myDataList = intent.getParcelableArrayListExtra(<someKey>, MyData::class.java)

CodePudding user response：

In your MainActivity 1

val sharedPreferences: SharedPreferences =
            getSharedPreferences("MySharedPref", MODE_PRIVATE)

        val myEdit = sharedPreferences.edit()

        binding?.btnButton?.setOnClickListener {
        myEdit.putString("editText1", editText1.getText().toString())
        myEdit.putString("editText2", editText2.getText().toString())
        myEdit.putString("textView1", textView1.getText().toString())

        myEdit.apply()
        val intent = Intent(this@MainActivity, SecondActivity::class.java)
            startActivity(intent)
        }

In your 3rd activity onCreate

val sharedPreferences: SharedPreferences =
            getSharedPreferences("MySharedPref", MODE_PRIVATE)

val editText1 = sharedPreferences.getString("editText1", "")
val editText2 = sharedPreferences.getString("editText2", "")
val textView1 = sharedPreferences.getString("textView1", "")

Then use these values in MyData modal.