Library for android. Helping you to use paging library.
Add it in your root build.gradle at the end of repositories:
allProjects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}Add the dependency:
dependencies {
implementation 'com.github.fajaragungpramana:paging-helper:0.0.1'
}First step for example i use fake mvvm flow. You can create remote data source or local data source service and create repository class. For example i create FakeRepository.kt.
class FakeRepository {
fun getListDay() = PagingHelperDataSource(
onResponse = { pageIndex ->
return@PagingHelperDataSource FakeDataSource.getListDay(pageIndex)
},
onError = { e ->
// TODO: Do something here when response get an exception.
}
)
}Then create view model. And set page config, the return of pageConfig(pageLimit: Int = 15, pageSource: PagingSource) is coroutine flow Flow<PagingData>. For example i create FakeViewModel.kt.
class FakeViewModel(private val mFakeRepository: FakeRepository) {
val listDay by lazy {
PagingHelperConfig.pageConfig(pagingSource = mFakeRepository.getListDay())
}
}Then you can create paging recycler view adapter in your Activity or Fragment like this. Note: You must implement ViewBinding library to use this custom adapter.
private val mDayAdapter by lazy {
PagingHelperAdapterImpl(
Day.DIFF_UTIL,
onCreateViewBinding = { inflater, parent, _ ->
ItemListDayBinding.inflate(inflater, parent, false)
},
onBinding = { binding, entity, position ->
(binding as ItemListDayBinding).apply {
tvDay.text = "${position + 1} ${entity?.name}"
}
}
)
}This is the full code in activity for example i create MainActivity.kt.
class MainActivity : AppCompatActivity() {
private lateinit var mBinding: ActivityMainBinding
private val mFakeViewModel by lazy { FakeViewModel(FakeRepository()) }
private val mDayAdapter by lazy {
PagingHelperAdapterImpl(
Day.DIFF_UTIL,
onCreateViewBinding = { inflater, parent, _ ->
ItemListDayBinding.inflate(inflater, parent, false)
},
onBinding = { binding, entity, position ->
(binding as ItemListDayBinding).apply {
tvDay.text = "${position + 1} ${entity?.name}"
}
}
)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
mBinding = ActivityMainBinding.inflate(layoutInflater)
setContentView(mBinding.root)
mBinding.rvDay.apply {
layoutManager = LinearLayoutManager(this@MainActivity)
adapter = mDayAdapter
}
GlobalScope.launch {
mFakeViewModel.listDay.collectLatest { pagingDay ->
mDayAdapter.submitData(pagingDay)
}
}
}
}
Copyright 2021 Fajar Agung Pramana
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.