Simple API implement DataBinding and ViewBinding. 简单的 API 实现 DataBinding 和 ViewBinding,欢迎 star
Binding
Simple API implement DataBinding and ViewBinding. Welcome star
简单的 API 实现 DataBinding 和 ViewBinding,欢迎 star
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Binding has been migrated to Maven Central because jCenter will be deprecated
Binding simplifies the use of DataBinding and ViewBinding, and only requires one line of code to implement DataBinding and ViewBinding.
The future plan of Binding provides a general findViewById
solution. Due to the iterative update of technology from butterknife, DataBinding, Kotlin synthesis method (Synthetic view) to the current ViewBinding, there may be new technologies in the future. No matter how the technology changes, just need Update Binding, the external use remains unchanged.
Kotlin synthesis method (Synthetic view) is so much more convenient than ViewBinding, why is it abandoned by Google, please check this article Kotlin 插件的落幕,ViewBinding 的崛起。
This article 竟然如此简单,DataBinding 和 ViewBinding analyzes the difference between DataBinding and ViewBinding from the perspective of use, and also introduces how to use simpler Ways to implement DataBinding and ViewBinding.
Thank you for your suggestions. At present, Binding has been adapted to a large number of scenarios. At the same time, it also provides a lot of practical cases of DataBinding and ViewBinding. If you encounter Binding incompatible scenarios during use, please raise an issue and I will solve it as soon as possible. .
If this repository is helpful to you, please give me star, thank you very much for your support, and welcome you to submit a PR ❤️❤️❤️
Binding the following advantages:
Ativity
, Fragment
, Dialog
, Adapter
, include
, merge
, ViewStub
, Navigation
etc.Activity
、AppCompatActivity
、FragmentActivity
、Fragment
、Dialog
ListAdapter
、 PagedListAdapter
、 PagingDataAdapter
、 RecyclerView.Adapter
onDestroyed()
Binding has been migrated to Maven Central because jCenter will be deprecated
add jcenter
Add the following code to the build.gradle
file at the Project level
allprojects {
repositories {
// aliyun center 包含 mavenCentral 和 jcenter
maven { url "https://maven.aliyun.com/repository/public" }
// maven
mavenCentral()
}
}
add dependency
Add the following code to the module level build.gradle
file, and you need to enable DataBinding or ViewBinding
android {
buildFeatures {
dataBinding = true
viewBinding = true
}
}
dependencies {
implementation 'com.hi-dhl:binding:${binding_version}'
}
The latest version
Binding provides a simple API as shown below.
ViewBinding
val binding: ActivityViewBindBinding by viewbind()
DataBinding
val binding: ActivityDataBindBinding by databind(R.layout.activity_data_bind)
or
val binding: ActivityDataBindBinding by databind()
let's see how to use in Ativity
, Fragment
, Dialog
, Adapter
, include
, merge
, ViewStub
, Navigation
, ViewGroup
etc.
Use DataBinding and ViewBinding in Custom ViewGroup,
Use of ViewBinding :
val binding: LayoutViewCustomBinding by viewbind()
val binding: LayoutViewCustomBinding by viewbind(this)
Use of DataBinding
val binding: LayoutViewCustomDataBinding by databind(R.layout.layout_view_custom_data)
A detailed example is shown below。
class ViewBindCustomView @JvmOverloads constructor(
context: Context,
attr: AttributeSet? = null,
defStyleAttr: Int = 0,
) : LinearLayout(context, attr, defStyleAttr) {
// ViewBinding
// When the root layout is the merge tag, use this method for initialization
val binding: LayoutViewCustomBinding by viewbind(this)
// When the root layout is a non-merge label, use this method to initialize
val binding: LayoutViewCustomBinding by viewbind()
// DataBinding
val binding: LayoutViewCustomDataBinding by databind(R.layout.layout_view_custom_data)
init {
with(binding) {
result.setText("Use DataBinding and ViewBinding in Custom ViewGroup")
}
}
}
Use DataBinding and ViewBinding in Adapter (ListAdapter, PagingDataAdapter, RecyclerView.Adapter, etc.), add by viewbind()
or by databind()
, the example is as follows,see example
class ProductViewHolder(view: View) : RecyclerView.ViewHolder(view) {
// DataBinding
val binding: RecycleItemProductBinding by databind()
fun bindData(data: Product?, position: Int) {
binding.apply {
product = data
executePendingBindings()
}
}
}
class ProductViewHolderHeader(view: View) : RecyclerView.ViewHolder(view) {
// ViewBinding
val binding: RecycleItemProductHeaderBinding by viewbind()
fun bindData(data: Product?, position: Int) {
binding.apply {
name.text = "通过 ViewBinding 绑定的 head"
}
}
}
use in Activity
, AppCompatActivity
, and FragmentActivity
, add by viewbind()
or by databind(R.layout.activity_main)
.
class MainActivity : AppCompatActivity() {
// DataBinding
val binding: ActivityMainBinding by databind(R.layout.activity_main)
// ViewBinding
val binding: ActivityMainBinding by viewbind()
}
There are two ways in Fragment
, and their use positions are different, as shown below.
onCreateView
,see example(It is not recommended to use Method 1,It is recommended to use Method 2,see issue #13)onViewCreated
,see example ViewBindFragment.kt and DataBindRecycleFragment.kt
Method 1:
class FragmentNav1 : Fragment() {
// DataBinding
val binding: FragmentMainBinding by databind()
// ViewBinding
val binding: FragmentMainBinding by viewbind()
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View {
return binding.root
}
}
Method 2:
class FragmentNav1 : Fragment(R.layout.fragment_main) {
// DataBinding
val binding: FragmentMainBinding by databind()
// ViewBinding
val binding: FragmentMainBinding by viewbind()
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
binding.apply { textView.setText("Binding") }
}
}
The usage in Dialog
is as follows。
class AppDialog(context: Context) : Dialog(context, R.style.AppDialog) {
// DataBinding
val binding: DialogAppBinding by databind(R.layout.dialog_data_binding)
// ViewBinding
val binding: DialogAppBinding by viewbind()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding.apply { result.setText("DialogAppBinding") }
}
}
or add life cycle listening
class AppDialog(context: Context,lifecycle: Lifecycle) : Dialog(context, R.style.AppDialog) {
// use DataBinding life cycle listening
val binding: DialogAppBinding by databind(R.layout.dialog_data_binding, lifecycle)
// use ViewBinding life cycle listening
val binding: DialogAppBinding by viewbind(lifecycle)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding.apply { result.setText("DialogAppBinding") }
}
}
Extension method that supports DataBinding to bind data when initialized,Thanks to @br3ant
contribute,see example
val binding: ActivityDataBindBinding by databind(R.layout.activity_data_bind) {
val account = Account()
account.name = "test"
this.account = account
}
Do not want to generate a binding class for a layout, add the following attributes to the root view of the layout file
<LinearLayout tools:viewBindingIgnore="true" >
</LinearLayout>
-keepclassmembers class ** implements androidx.viewbinding.ViewBinding {
public static ** bind(***);
public static ** inflate(***);
public static ** inflate(**,**);
}
2023-04-13(V1.2.0)
2022-10-07(V1.1.9)
2022-7-13(V1.1.7)
2022-5-12(V1.1.5)
2022-5-03(V1.1.4)
2021-5-09(V1.1.3)
2021-3-09(V1.1.2)
2021-1-25(V1.0.9)
2021-1-14(V1.0.8)
2020-12-31
2020-12-28(V1.0.6)
2020-12-21(V1.0.5)
2020-12-17(V1.0.4)
Support all Adapters related to RecyclerView.ViewHolder (ListAdapter, PagingDataAdapter, RecyclerView.Adapter, etc.) to use DataBinding and ViewBinding,see example
Extension method that supports DataBinding to bind data when initialized,Thanks to @br3ant
contribute,see example
2020-12-15(V1.0.3)
by databind(R.layout.dialog_data_binding)
or by databind(R.layout.dialog_data_binding, lifecycle)
onDestroyed()
2020-12-14:
2020-12-13(V1.0.1)
by viewbind()
or by viewbind(lifecycle)
2020-12-12(V1.0.0)
Activity
、AppCompatActivity
、FragmentActivity
、Fragment
onDestroyed()
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