🐔🐔🐔JetPackMvvm

• MVVMJetPackLiveDataViewModelLifecycleNavigation
• kotlin
• Retrofit,

Demo

NavigationActivity+FragmentmvpMVP hegaojian/WanAndroid

APK

• Github

• firm()

• ()

1.

• 1.1 root's build.gradleJitpack

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

• 1.2 app's build.gradle

dependencies {
  ...
  implementation 'com.github.hegaojian:JetpackMvvm:1.2.7'
}

• 1.3 app's build.gradleandroid DataBindingViewBinding

AndroidStudio 4.0 ------>
android {
    ...
    dataBinding {
        enabled = true 
    }
    viewBinding {
        enabled = true
    }
}

AndroidStudio 4.0 ------>
android {
    ...
   buildFeatures {
        dataBinding = true
        viewBinding = true
    }
}
 

2.

BaseActivity/BaseFragmentBase

• DatabindingViewBinding------- BaseVmActivity/BaseVmFragment
• Databinding-----------BaseVmDbActivity/BaseVmDbFragment**
• Viewbinding-----------BaseVmVbActivity/BaseVmVbFragment**

Activity

abstract class BaseActivity<VM : BaseViewModel, DB : ViewDataBinding> : BaseVmDbActivity<VM, DB>() {
     /**
     * ActivityId abstract
     */
    abstract override fun layoutId(): Int
    /**
     * Activityc abstract
     */
    abstract override fun initView(savedInstanceState: Bundle?)

    /**
     * liveData
     */
    override override fun createObserver()


    /**
     *  
     */
    override fun showLoading(message: String) {
       ...
    }

    /**
     *  
     */
    override fun dismissLoading() {
       ...
    }
}

Fragment

abstract class BaseFragment<VM : BaseViewModel,DB:ViewDataBinding> : BaseVmDbFragment<VM,DB>() {
   
    abstract override fun initView(savedInstanceState: Bundle?)

    /**
     *  fragment abstract
     */
    abstract override fun lazyLoadData()

    /**
     * liveData 
     */
    override override fun createObserver()
  
    /**
     * FragmentonViewCreated 
     */
    override fun initData() {

    }
    
   /**
     *  
     */
    override fun showLoading(message: String) {
       ...
    }

    /**
     *  
     */
    override fun dismissLoading() {
       ...
    }
}

3.

• 3.1 LoginViewModelBaseViewModel

class LoginViewModel : BaseViewModel() {
  
}

• 3.2 LoginFragment ,LoginViewModel,ViewDataBindfragment_login.xmldatabindingFragmentLoginBindingBuild->Clean Project

class LoginFragment : BaseFragment<LoginViewModel, FragmentLoginBinding>() {
    
    /**
     *  
     */
    override fun initView(savedInstanceState: Bundle?) {
        ...
    }
    
    /**
     *  fragment 
     */
    override fun lazyLoadData() { 
        ...
    }
}

4.Retrofit+

• **4.1 BaseNetworkApi **

class NetworkApi : BaseNetworkApi() {

   companion object {
         
        val instance: NetworkApi by lazy(mode = LazyThreadSafetyMode.SYNCHRONIZED) { NetworkApi() }

        //- NetApiService 
        val service: ApiService by lazy(mode = LazyThreadSafetyMode.SYNCHRONIZED) {
            instance.getApi(ApiService::class.java, ApiService.SERVER_URL)
        }
    }
   
    /**
     * setHttpClientBuilder
     *  OkHttpClient.Builder 
     */
    override fun setHttpClientBuilder(builder: OkHttpClient.Builder): OkHttpClient.Builder {
        builder.apply {
            //headstoken Loghead
            addInterceptor(MyHeadInterceptor())
            // 
            addInterceptor(LogInterceptor())
            // 
            connectTimeout(10, TimeUnit.SECONDS)
            readTimeout(5, TimeUnit.SECONDS)
            writeTimeout(5, TimeUnit.SECONDS)
        }
        return builder
    }

    /**
     * setRetrofitBuilder
     * Retrofit.BuilderGSONprotobuf
     */
    override fun setRetrofitBuilder(builder: Retrofit.Builder): Retrofit.Builder {
        return builder.apply {
            addConverterFactory(GsonConverterFactory.create(GsonBuilder().create()))
            addCallAdapterFactory(CoroutineCallAdapterFactory())
        }
    }
}

• 4.2:

{
    "data": ...,
    "errorCode": 0,
    "errorMsg": ""
}

Android ApierrorCode0 -dataerrorCode==0 BaseResponse

data class ApiResponse<T>(var errorCode: Int, var errorMsg: String, var data: T) : BaseResponse<T>() {

    // wanandroid   0 
    override fun isSucces() = errorCode == 0

    override fun getResponseCode() = errorCode

    override fun getResponseData() = data

    override fun getResponseMsg() = errorMsg

}

• 4.3 ViewModelviewModelScopeIO2

1ResultStateActivity/FragmentResultState

class RequestLoginViewModel: BaseViewModel {

  //
    var loginResult = MutableLiveData<ResultState<UserInfo>>()
    
  //
    var loginResult2 = MutableLiveData<ResultState<ApiResponse<UserInfo>>>()
    
  fun login(username: String, password: String){
   //1. Activity/Fragment
        request(
            { HttpRequestCoroutine.login(username, password) }, //
            loginResult,//ActivityfragmentloginActivity
            true,//false 
            "..."//...
        )
        
   //2.Activity/Fragmentcode
        requestNoCheck(
          {HttpRequestCoroutine.login(username,password)},
          loginResult2,
          true,
          "...") 
}


class LoginFragment : BaseFragment<LoginViewModel, FragmentLoginBinding>() {
    
    private val requestLoginRegisterViewModel: RequestLoginRegisterViewModel by viewModels()
    
    /**
     *  
     */
    override fun initView(savedInstanceState: Bundle?) {
        ...
    }
    
    /**
     *  fragment 
     */
    override fun lazyLoadData() { 
        ...
    }
    
    override fun createObserver(){
      //
       requestLoginRegisterViewModel.loginResult.observe(viewLifecycleOwner,
            Observer { resultState ->
                parseState(resultState, {
                    // 
                    it.username.logd()
                }, {
                    //(...)
                    showMessage(it.errorMsg)
                })
            })
    
       //
       requestLoginRegisterViewModel.loginResult2.observe(viewLifecycleOwner, Observer {resultState ->
               parseState(resultState,{
                   if(it.errorCode==0){
                       // 
                       it.data.username.logd()
                   }else{
                       //
                       showMessage(it.errorMsg)
                   }
               },{
                   //
                   showMessage(it.errorMsg)
               })
           })
   } 
}

2 ViewModel

class RequestLoginViewModel : BaseViewModel() {
    
  fun login(username: String, password: String){
   //1.
     request({HttpRequestCoroutine.login(username,password)},{
             //  
             it.username.logd()
         },{
             // 
             it.errorMsg.logd()
         },true,"...")
        
   //2.code
       requestNoCheck({HttpRequestCoroutine.login(username,password)},{
            // 
            if(it.errorCode==0){
                //
                it.data.username.logd()
            }else{
                //
                it.errorMsg.logd()
            }
        },{
            // 
            it.errorMsg.logd()
        },true,"...")
}
 

ViewModelActivity/FragmentViewModel

val mainViewModel:MainViewModel by viewModels()

val mainViewModelMainViewModel by activityViewModels()

loadingActivity | Fragment

addLoadingObserve(viewModel)

4.4

jetpackMvvmLog false true

5.ViewModel

• 5.1activity/fragmentViewModel

 val mainViewModel = ViewModelProvider(this,
            ViewModelProvider.AndroidViewModelFactory(application)).get(MainViewModel::class.java)

**Ktx

//activityActivityViewModel
 private val mainViewModel:MainViewModel by viewModels()
 
//activityApplicationViewModelApplicationBaseApp
 private val mainViewModel by lazy { getAppViewModel<MainViewModel>()}

//fragmentFragmentViewModel
 private val mainViewModel:MainViewModel by viewModels()

//fragmentActivityViewModel
private val mainViewModelMainViewModel by activityViewModels()

//fragmentApplicationViewModelApplicationBaseApp
private val mainViewModel by lazy { getAppViewModel<MainViewModel>()}

6.

 
 me.hgj.jetpackmvvm.ext.util
 me.hgj.jetpackmvvm.ext.view
 

7.

-keep class me.hgj.jetpackmvvm.**{*;}
################ ViewBinding & DataBinding ###############
-keepclassmembers class * implements androidx.viewbinding.ViewBinding {
  public static * inflate(android.view.LayoutInflater);
  public static * inflate(android.view.LayoutInflater, android.view.ViewGroup, boolean);
  public static * bind(android.view.View);
}

• QQ419581249

License

 Copyright 2019, hegaojian()       
  
   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.