Hoppa is a micro utility extension created around AndroidX and Kotlin to reduce code duplication for simple use-cases.
repositories {
maven { url 'https://jitpack.io' }
}
dependencies {
implementation platform("xyz.tynn.hoppa:bom:$hoppaVersion")
}
implementation 'xyz.tynn.hoppa:keyboard'
A small utility to react to visibility changes of on-screen keyboards.
activity.hideKeyboardOnFocusChange { it !is EditText }
activity.setOnKeyboardVisibilityChangeListener(::hideNavigation)
implementation 'xyz.tynn.hoppa:flow'
Missing builders and operators for Flow.
deferred.asFlow()
flow.asFlow()
flow.collectIn(scope) { use(it) }
flow.stateIn(scope, Eagerly)
Analogous to runCatching { ... }, the flowCatching() operator
wraps values and error with the Result type. The flowThrowing
unwraps the Result values and errors again.
flow.flowCatching().flowThrowing()
Builder for flows from SharedPreferences.
prefs.getBooleanFlow("key", false)
prefs.getFloatFlow("key", 0F)
prefs.getIntFlow("key", 0)
prefs.getLongFlow("key", 0L)
prefs.getStringFlow("key", null)
prefs.getStringSetFlow("key", null)
The SharedPreferencesFlow also provides read write access to preference.
prefs.asBooleanFlow("key", false)
prefs.asFloatFlow("key", 0F)
prefs.asIntFlow("key", 0)
prefs.asLongFlow("key", 0L)
prefs.asStringFlow("key", "")
prefs.asStringFlow("key")
prefs.asStringSetFlow("key", setOf())
prefs.asStringSetFlow("key")
val flow = prefs.asStringFlow("key")
flow.value = "value"
implementation 'xyz.tynn.hoppa:delegate'
Extensions to provide mapped data with delegates.
val foo by delegate.map { long.toString() }
var foo by delegate.map {
inverseTransform = { string.toLong() },
transform = { long.toString() },
}
val foo by delegate.nonNull()
var foo by delegate.nonNull()
Delegate extension to access data from SharedPreferences.
var foo by prefs.boolean("key", false)
var foo by prefs.enum("key", Enum.Value)
var foo by prefs.float("key", -1F)
var foo by prefs.int("key", -1)
var foo by prefs.long("key", -1L)
var foo by prefs.string("key", "")
var foo by prefs.stringSet("key", setOf())
var foo by prefs.nullableEnum<Enum>("key")
var foo by prefs.nullableString("key")
var foo by prefs.nullableStringSet("key")
Delegate extension to access data from SavedStateHandle.
val handle: SavedStateHandle
var foo by handle
implementation 'xyz.tynn.hoppa:storage'
An extension to create a data store from a Context and
serializers for the JSON format.
context.createDataStore(fileName, serializer)
gson.asSerializer(defaultValue)
Json.asSerializer(defaultValue)
moshi.asSerializer(defaultValue)
An extension of android.database.DatabaseUtils for SupportSQLiteStatement,
SupportSQLiteDatabase and RoomDatabase.
roomDb.queryNumEntries(tableName, selection, arg1, arg2)
db.queryNumEntries(tableName, selection, arg1, arg2)
db.longForQuery(query, arg1, arg2)
prog.longForQuery(arg1, arg2)
db.stringForQuery(query, arg1, arg2)
prog.stringForQuery(arg1, arg2)
prog.bindAllArgsAsStrings(arg1, arg2)
prog.bindObject(index, any)
Extensions to create and configure room databases directly
or using the DatabaseBuilder utility.
databaseBuilder<MyRoomDatabase>("name").build {
allowMainThreadQueries()
}
databaseBuilder.build<MyRoomDatabase>("name") {
allowMainThreadQueries()
}
context.databaseBuilder("name")
context.buildDatabase("name") {
allowMainThreadQueries()
}
context.inMemoryDatabaseBuilder("name")
context.buildInMemoryDatabase("name") {
allowMainThreadQueries()
}
An in memory implementation of SharedPreferences backed by an ArrayMap. The call
to prefs.edit().commit() always returns false.
implementation 'xyz.tynn.hoppa:time'
A set of java.time to ThreeTenBp mappers.
javaTimeDate.toThreeTenBp()
threeTenBpDate.toJavaTime()
implementation 'xyz.tynn.hoppa:recycler'
A simple implementation of DiffUtil.ItemCallback defaulting to the equality
oldItem == newItem for both areItemsTheSame() and areContentsTheSame().
DiffUtilItemCallback()
DiffUtilItemCallback { oldItem, newItem ->
oldItem.id == newItem.id
}
DiffUtilItemCallback(
areItemsTheSame = { oldItem, newItem -> oldItem.id == newItem.id },
areContentsTheSame = { oldItem, newItem -> oldItem == newItem }
)
Some simple delegates to ViewHolder.itemView for accessing tags or setting
(long) click listeners.
holder.context
holder[tagId] = tagValue
holder.getTag(tagId)
holder.setOnClickListener { doSomething() }
holder.setOnLongClickListener { true }
implementation 'xyz.tynn.hoppa:binding'
A simple RecyclerView.ViewHolder providing access to a ViewBinding.
holder.binding.textView.text = "value"
Some simple delegates and extensions to access or use a ViewBinding
with an Activity.
activity.contentViewBinding(ResourceBinding::inflate)
activity.viewBinding(ResourceBinding::inflate)
activity.setContentView(binding)
activity.setContentView(ResourceBinding::inflate)
Some simple delegates and extensions to access or use a ViewBinding
with a Fragment.
fragment.viewBinding(ResourceBinding::bind)
fragment.bind(ResourceBinding::bind)
Some simple delegates to ViewBinding.root for accessing tags or setting
(long) click listeners.
binding.context
binding[tagId] = tagValue
binding.getTag(tagId)
binding.setOnClickListener { doSomething() }
binding.setOnLongClickListener { true }
A simple extension to inflate a ViewBinding with a parent ViewGroup.
parent.inflate(attachToRoot = true, ResourceBinding::inflate)
Copyright (C) 2020-2021 Christian Schmitz
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.