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Android ViewBinding 封装使用_viewbinding封装

作者：小舞很执着 | 2024-08-19 12:40:57

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viewbinding封装

1、ViewBinding + Activity 封装

2、ViewBinding + Fragment 封装

3、ViewBinding + DaiglogFragment 封装

4、ViewBinding + Adapter 封装

1、ViewBinding + Activity 封装

  1. open abstract class BaseMVVMActivity<VB : ViewBinding, VM : BaseVM> : FragmentActivity() {
  2.  
  3.     var mContext: Context? = null
  4.     var mActivity: Activity? = null
  5.  
  6.     var mBinding: VB? = null
  7.     var mVM: VM? = null
  8.  
  9.     override fun onCreate(savedInstanceState: Bundle?) {
  10.         super.onCreate(savedInstanceState)
  11.         mContext = this
  12.         mActivity = this
  13.  
  14.         if (isFullWindow()){
  15.             ImmersionBar.with(this)
  16.                 .statusBarDarkFont(statusBarDarkFont())
  17.                 .init();
  18.         }
  19.         //拿到泛型
  20.         val superClass: ParameterizedType = javaClass.genericSuperclass as ParameterizedType
  21.  
  22.         //初始化binding
  23.         val classVB = superClass.actualTypeArguments[0] as Class<VB>
  24.         val vbMethod = classVB.getMethod("inflate", LayoutInflater::class.java)
  25.         mBinding = vbMethod.invoke(null, layoutInflater) as VB
  26.  
  27.         //初始化VM
  28.         val classVM = superClass.actualTypeArguments[1] as Class<VM>
  29.         mVM = ViewModelProvider(this).get(classVM)
  30.  
  31.         setContentView(mBinding!!.root)
  32.  
  33.         initView()
  34.         initObserve()
  35.         initData()
  36.     }
  37.  
  38.     //是否全屏
  39.     open fun isFullWindow():Boolean = true
  40.     //状态栏字体是深色
  41.     open fun statusBarDarkFont():Boolean = true
  42.  
  43.     abstract fun initView()
  44.     abstract fun initObserve()
  45.     open abstract fun initData()
  46.  
  47.     override fun onDestroy() {
  48.         super.onDestroy()
  49.         mBinding = null
  50.     }
  51. }

使用

  1. class MainActivity : BaseMVVMActivity<ActivityMainBinding, MainActivityVM>(){
  2.  
  3.     override fun initView() {    
  4.         mBinding?.btnNext?.setOnClickListener {
  5.             val intent = Intent(mActivity,Test2Activity::class.java)
  6.             startActivity(intent)
  7.         }       
  8.     }
  9.  
  10.     override fun initObserve() {
  11.     }
  12.  
  13.     override fun initData() {
  14.  
  15.     }
  16. }

2、ViewBinding + Fragment 封装

  1.  
  2. open abstract class BaseMVVMFragment<VB : ViewBinding, VM : BaseVM>:Fragment(){
  3.  
  4.     var mBinding: VB? = null
  5.     var mVM: VM? = null
  6.  
  7.     override fun onCreateView(
  8.         inflater: LayoutInflater,
  9.         container: ViewGroup?,
  10.         savedInstanceState: Bundle?
  11.     ): View? {
  12.  
  13.         //拿到泛型
  14.         val superClass: ParameterizedType = javaClass.genericSuperclass as ParameterizedType
  15.  
  16.         //初始化binding
  17.         val classVB = superClass.actualTypeArguments[0] as Class<VB>
  18.         val vbMethod = classVB.getMethod("inflate", LayoutInflater::class.java,ViewGroup::class.java,Boolean::class.java)
  19.         mBinding = vbMethod.invoke(null, inflater,container,false) as VB
  20.  
  21.         //初始化VM
  22.         val classVM = superClass.actualTypeArguments[1] as Class<VM>
  23.         mVM = ViewModelProvider(this).get(classVM)
  24.  
  25.         initView()
  26.         initObserve()
  27.         initData()
  28.         
  29.         return mBinding!!.root
  30.     }
  31.  
  32.  
  33.     abstract fun initView()
  34.     abstract fun initObserve()
  35.     open abstract fun initData()
  36.     
  37.     override fun onDestroyView() {
  38.         super.onDestroyView()
  39.  
  40.         mBinding = null
  41.     }
  42. }

使用

  1. class TestFragment:BaseMVVMFragment<MainFragmentTestBinding,TestFragmentVM>(){
  2.     override fun initView() {
  3.          
  4.     }
  5.  
  6.     override fun initObserve() {
  7.          
  8.     }
  9.  
  10.     override fun initData() {
  11.          
  12.     } 
  13. }

3、ViewBinding + DaiglogFragment 封装

  1. open abstract class BaseDialogFragment<VB : ViewBinding, VM : BaseVM> : DialogFragment() {
  2.  
  3.     var mBinding: VB? = null
  4.     var mVM: VM? = null
  5.  
  6.     override fun onCreate(savedInstanceState: Bundle?) {
  7.         super.onCreate(savedInstanceState)
  8.         setStyle(STYLE_NO_TITLE,R.style.MyDialog)
  9.         isCancelable = true
  10.     }
  11.  
  12.     override fun onCreateView(
  13.         inflater: LayoutInflater,
  14.         container: ViewGroup?,
  15.         savedInstanceState: Bundle?
  16.     ): View? {
  17.         //拿到泛型
  18.         val superClass: ParameterizedType = javaClass.genericSuperclass as ParameterizedType
  19.  
  20.         //初始化binding
  21.         val classVB = superClass.actualTypeArguments[0] as Class<VB>
  22.         val vbMethod = classVB.getMethod(
  23.             "inflate",
  24.             LayoutInflater::class.java,
  25.             ViewGroup::class.java,
  26.             Boolean::class.java
  27.         )
  28.         mBinding = vbMethod.invoke(null, inflater, container, false) as VB
  29.  
  30.         //初始化VM
  31.         val classVM = superClass.actualTypeArguments[1] as Class<VM>
  32.         mVM = ViewModelProvider(this).get(classVM)
  33.  
  34.         initView()
  35.         initObserve()
  36.         initData()
  37.         return mBinding!!.root
  38.     }
  39.  
  40.  
  41.     open abstract fun initView()
  42.     open abstract fun initObserve()
  43.     open abstract fun initData()
  44.     
  45. }

MyDialog.style

  1.    <style name="MyDialog" parent="Theme.AppCompat.Light.Dialog">
  2.         <!--        <item name="bottomSheetStyle">@style/Theme.Design.BottomSheetDialog</item>-->
  3.         <item name="android:background">@android:color/transparent</item>
  4.         <item name="android:windowBackground">@android:color/transparent</item>
  5.         <item name="android:windowNoTitle">true</item>
  6.         <item name="android:windowIsFloating">true</item>
  7.         <item name="android:windowIsTranslucent">false</item>
  8.     </style>

使用

  1. class TestDialog:  BaseDialogFragment<MainDialogTestBinding, TestDailogVM>(){
  2.  
  3.     override fun initView() {  
  4.     }
  5.  
  6.     override fun initObserve() {
  7.  
  8.     }
  9.  
  10.     override fun initData() {
  11.  
  12.     }
  13.       
  14. }

---------------------------------- BottomSheetDialogFragment-------------------------------------

  1. open abstract class BaseBottomDialogFragment<VB : ViewBinding, VM : BaseVM>: BottomSheetDialogFragment(){
  2.  
  3.     var mBinding: VB? = null
  4.     var mVM: VM? = null
  5.  
  6.     override fun onCreateView(
  7.         inflater: LayoutInflater,
  8.         container: ViewGroup?,
  9.         savedInstanceState: Bundle?
  10.     ): View? {
  11.  
  12.         //拿到泛型
  13.         val superClass: ParameterizedType = javaClass.genericSuperclass as ParameterizedType
  14.  
  15.         //初始化binding
  16.         val classVB = superClass.actualTypeArguments[0] as Class<VB>
  17.         val vbMethod = classVB.getMethod("inflate", LayoutInflater::class.java,ViewGroup::class.java,Boolean::class.java)
  18.         mBinding = vbMethod.invoke(null, inflater,container,false) as VB
  19.  
  20.         //初始化VM
  21.         val classVM = superClass.actualTypeArguments[1] as Class<VM>
  22.         mVM = ViewModelProvider(this).get(classVM)
  23.  
  24.         initView()
  25.         initObserve()
  26.         initData()
  27.         return mBinding!!.root
  28.     }
  29.  
  30. //禁用CollapsingToolbarLayout的展开/折叠.
  31.  
  32. // mBinding.recyclerView.isNestedScrollingEnabled = false
  33.  
  34.     open abstract fun initView()
  35.     open abstract fun initObserve()
  36.     open abstract fun initData()
  37. }

4、ViewBinding + Adapter 封装

VBViewHolder
  1.  
  2. class VBViewHolder<VB:ViewBinding>(val mBinding: VB) :BaseViewHolder(mBinding.root)
BaseVBAdapter
  1. abstract class BaseVBAdapter<T : Any, VB : ViewBinding>(mData: MutableList<T>? = null) :
  2.     BaseQuickAdapter<T, VBViewHolder<VB>>(0, mData) {
  3.     
  4.     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): VBViewHolder<VB> {
  5.         //拿到泛型
  6.         val superClass: ParameterizedType = javaClass.genericSuperclass as ParameterizedType
  7.         //初始化binding
  8.         val classVB = superClass.actualTypeArguments[1] as Class<VB>
  9.         val vbMethod = classVB.getMethod(
  10.             "inflate",
  11.             LayoutInflater::class.java,
  12.             ViewGroup::class.java,
  13.             Boolean::class.java
  14.         )
  15.         val mBinding: VB =
  16.             vbMethod.invoke(null, LayoutInflater.from(parent.context), parent, false) as VB
  17.         return VBViewHolder(mBinding)
  18.     }
  19.     
  20. }

使用 

  1. class StudentAdapter : BaseVBAdapter<String, MainItemStudentBinding>() {
  2.     override fun convert(holder: VBViewHolder<MainItemStudentBinding>, item: String) {
  3.         holder?.mBinding?.tvName?.text = "${item}"
  4.     }
  5. }

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