DisplayNameComparator

Kotlin |Java

open class DisplayNameComparator : Comparator<ApplicationInfo!>

kotlin.Any
↳	android.content.pm.ApplicationInfo.DisplayNameComparator

Summary

Public constructors
`DisplayNameComparator(pm: PackageManager!)`

Public methods
Int	`compare(aa: ApplicationInfo!, ab: ApplicationInfo!)` Compares its two arguments for order.

Inherited functions

From class Comparator

`Comparator<T>!`	`reversed()` Returns a comparator that imposes the reverse ordering of this comparator.
`Comparator<T>!`	`thenComparing(other: Comparator<in T>!)` Returns a lexicographic-order comparator with another comparator. If this `Comparator` considers two elements equal, i.e. `compare(a, b) == 0`, `other` is used to determine the order. The returned comparator is serializable if the specified comparator is also serializable.
`Comparator<T>!`	`thenComparing(keyExtractor: Function<in T, out U>!)` Returns a lexicographic-order comparator with a function that extracts a `Comparable` sort key.
`Comparator<T>!`	`thenComparing(keyExtractor: Function<in T, out U>!, keyComparator: Comparator<in U>!)` Returns a lexicographic-order comparator with a function that extracts a key to be compared with the given `Comparator`.
`Comparator<T>!`	`thenComparingDouble(keyExtractor: ToDoubleFunction<in T>!)` Returns a lexicographic-order comparator with a function that extracts a `double` sort key.
`Comparator<T>!`	`thenComparingInt(keyExtractor: ToIntFunction<in T>!)` Returns a lexicographic-order comparator with a function that extracts an `int` sort key.
`Comparator<T>!`	`thenComparingLong(keyExtractor: ToLongFunction<in T>!)` Returns a lexicographic-order comparator with a function that extracts a `long` sort key.

Public constructors

DisplayNameComparator

Added in API level 1

DisplayNameComparator(pm: PackageManager!)

Public methods

compare

Added in API level 1

fun compare(
    aa: ApplicationInfo!, 
    ab: ApplicationInfo!
): Int

Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

The implementor must ensure that signum(compare(x, y)) == -signum(compare(y, x)) for all x and y. (This implies that compare(x, y) must throw an exception if and only if compare(y, x) throws an exception.)

The implementor must also ensure that the relation is transitive: ((compare(x, y)>0) && (compare(y, z)>0)) implies compare(x, z)>0.

Finally, the implementor must ensure that compare(x, y)==0 implies that signum(compare(x, z))==signum(compare(y, z)) for all z.

Parameters
`o1`	the first object to be compared.
`o2`	the second object to be compared.

Return
`Int`	a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

Exceptions
`java.lang.ClassCastException`	if the arguments' types prevent them from being compared by this comparator.
`java.lang.NullPointerException`	if an argument is null and this comparator does not permit null arguments