[英]How to instantiate interface in Kotlin?
setOnPlaceSelectedListener
將接口作為參數。 在Java中,可以通過覆蓋get-go上的所有方法來創建該接口的實例。 如何在Kotlin做到這一點?
autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
@Override
public void onPlaceSelected(Place place) {
txtView.setText(place.getName()+","+place.getId());
Log.i(TAG, "Place: " + place.getName() + ", " + place.getId());
}
@Override
public void onError(Status status) {
// TODO: Handle the error.
Log.i(TAG, "An error occurred: " + status);
}
});
您可以找到官方文檔( https://kotlinlang.org/docs/reference/object-declarations.html ),您可以創建一個對象聲明:
window.addMouseListener(object : MouseAdapter() {
override fun mouseClicked(e: MouseEvent) { ... }
override fun mouseEntered(e: MouseEvent) { ... }
})
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