[移动开发]ViewBinding 简单的基类管理

BaseActivity

abstract class BaseActivity<VIEW: ViewBinding> : AppCompatActivity() {

    var mBinding : VIEW ?= null

    private val binding get() = mBinding


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        mBinding = viewBinding(layoutInflater)
        val rootView = binding?.root
        setContentView(rootView)
    }

    override fun onStart() {
        super.onStart()
        initUI()
        initListener()
    }

    abstract fun viewBinding(layoutInflater: LayoutInflater): VIEW?

    abstract fun initUI()

    abstract fun initListener()

    override fun onDestroy() {
        super.onDestroy()
        mBinding = null
    }
}

BaseActivity使用方式
ActiviytFragmentAnimationsBinding 为 activiyt_fragment_animations.xml对应生成

class MainActivity : BaseActivity<ActiviytFragmentAnimationsBinding>() {

    private val TAG = "MainActivity"

    override fun viewBinding(layoutInflater: LayoutInflater): ActiviytFragmentAnimationsBinding? 			 {
        return ActiviytFragmentAnimationsBinding.inflate(layoutInflater)
    }

    override fun initUI() {
       //可以通过BaseActivity的mBinding获取到控件
       mBinding!!.tv_test.text = "test"
    }

    override fun initListener() {
    }

    override fun onStart() {
        super.onStart()
    }
}

BaseFragment

abstract class BaseFragment<VIEW : ViewBinding>:Fragment() {

   var mBinding : VIEW ?= null

   private val binding get() = mBinding

   override fun onCreateView(
       inflater: LayoutInflater,
       container: ViewGroup?,
       savedInstanceState: Bundle?
   ): View? {
       mBinding =  viewBinding(inflater,container)
       return binding?.root
   }

   override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
       super.onViewCreated(view, savedInstanceState)
       initListener()
       initUI()
   }

   abstract fun viewBinding(inflater: LayoutInflater, container: ViewGroup?): VIEW

   override fun onStart() {
       super.onStart()

   }

   abstract fun initUI()

   abstract fun initListener()

   override fun onDestroyView() {
       super.onDestroyView()
       mBinding = null
   }

BaseFragment使用方法
用法和Activity一样

class FragmentNetWork : BaseFragment<FragmentNetworkBinding>() {

   override fun viewBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentNetworkBinding {
       return FragmentNetworkBinding.inflate(inflater, container, false)
   }

   override fun initUI() {
   }

   override fun initListener() {

   }
   
    override fun onDestroy() {
       super.onDestroy()
       mBinding = null
   }
}