pyos
8314b7d3c9
In general, calling open methods in open class constructors is unsafe because their overrides will see an uninitialized instance. This change makes it at least possible to use the view cache in such cases. ^KT-50627 Fixed
56 lines
1.6 KiB
Kotlin
Vendored
56 lines
1.6 KiB
Kotlin
Vendored
package test
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import android.app.Activity
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import android.view.View
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import android.widget.*
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import kotlinx.android.synthetic.main.layout.*
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import kotlinx.android.synthetic.clearFindViewByIdCache
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class R {
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class id {
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companion object {
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const val item_detail_container = 0
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const val textView1 = 1
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const val password = 2
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const val textView2 = 3
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const val passwordConfirmation = 4
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const val login = 5
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}
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}
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}
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open class MyActivity(): Activity() {
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val textViewWidget = TextView(this)
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val editTextWidget = EditText(this)
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val buttonWidget = Button(this)
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override fun <T : View> findViewById(id: Int): T? {
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return when (id) {
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R.id.textView1 -> textViewWidget
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R.id.password -> editTextWidget
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R.id.login -> buttonWidget
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else -> null
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} as T?
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}
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open fun findPasswordWidget(): View = null!!
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private val textViewReadInInit = textView1
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private val passwordReadThroughOverride = findPasswordWidget()
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private fun check(expect: String, actual: String) =
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if (expect != actual) "'$actual' != '$expect'" else null
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public fun box(): String =
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check("Button", login.toString())
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?: check("TextView", textViewReadInInit.toString())
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?: check("EditText", passwordReadThroughOverride.toString())
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?: "OK".also { clearFindViewByIdCache() }
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}
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class MyActivity2 : MyActivity() {
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override fun findPasswordWidget() = password
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}
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fun box(): String = MyActivity2().box()
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