I am trying to pass data from one fragment to another but I am facing issue with sending data from parcelable from one fragment to another.
class MainFragment : Fragment() {
companion object {
public val KEY_PARSE_DATA = "parseData"
}
private var parseData: ParseData? = null
override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
// Inflate the layout for this fragment
return inflater!!.inflate(R.layout.fragment_main, container, false).apply {
val editName = findViewById(R.id.edit_Name) as EditText
val editSurname = findViewById(R.id.edit_Surname) as EditText
val buttonNext = findViewById(R.id.btn_Next) as Button
buttonNext.setOnClickListener(View.OnClickListener {
val fragment = AnotherFragment()
if (parseData != null) {
var parseData = ParseData(editName.text.toString(), editSurname.text.toString())
val fragment = AnotherFragment()
val bundle = Bundle()
bundle.putParcelable(KEY_PARSE_DATA, parseData)
fragment.setArguments(bundle)
fragmentManager.beginTransaction().add(R.id.fragment_container, fragment).commitAllowingStateLoss()
}
})
}
}
}// Required empty public constructor
Parcelable class for implementing it
@SuppressLint("ParcelCreator")
@Parcelize
data class ParseData(val firstName: String, val lastName: String) : Parcelable {
constructor(parcel: Parcel) : this(
parcel.readString(),
parcel.readString()) {
}
override fun toString(): String {
return "ParseData(firstName='$firstName', lastName='$lastName')"
}
companion object : Parceler<ParseData> {
override fun ParseData.write(parcel: Parcel, flags: Int) {
parcel.writeString(firstName)
parcel.writeString(lastName)
}
override fun create(parcel: Parcel): ParseData {
return ParseData(parcel)
}
}
}
And another fragment which grab data from parcelable class in android
class AnotherFragment : Fragment() {
override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
// Inflate the layout for this fragment
return inflater!!.inflate(R.layout.fragment_another, container, false).apply {
val textName = findViewById<TextView>(R.id.textFirst)
val textSurname = findViewById<TextView>(R.id.textSecond)
val bundle = arguments
if (bundle != null) {
val parseData = bundle.getParcelable<ParseData>(KEY_PARSE_DATA)
textName.setText(parseData.firstName)
textSurname.setText(parseData.lastName)
}
}
}
}
I tried some example but I cant get clear idea how parcelable is implemented in andoid application based on kotlin and build.gradle file
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.assignment.ankitt.kotlinsecond"
minSdkVersion 19
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
androidExtensions {
experimental = true
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.android.support:support-v4:26.1.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}
The first step is adding the kotlin-parcelize plugin to the shared module build. gralde file, till being able to use Parcelize annotation: As you know in regular Android projects if we want to make a class Parcelable, we should add the Parcelize annotation to it and implement the Parcelable interface.
Save. In Android, to pass the data from one activity to another activity, we use the Parcelable. The kotlin-parcelize plugin provides a Parcelable implementation generator. The Android's Parcelable is an interface on which, the values can be written and read from a Parcel.
Now it is enough to add 'kotlin-parcelize' plugin. So for example:
plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-parcelize'
}
Add below code into your App Level gradle.
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
androidExtensions {
experimental = true
}
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