使用协程简化异步代码

Author: fmtcias

app/src/main/java/com/fmt/github/base/fragment/BaseListMVFragment.kt

@@ -45,7 +45,7 @@ abstract class BaseListMVFragment<M> : BaseVMFragment(), OnRefreshListener,
         initViewModelAction()
     }
 
-    private fun initViewModelAction() {
+    protected fun initViewModelAction() {
         (mPage == 1).yes {
             mRefreshLayout.autoRefreshAnimationOnly()
         }

app/src/main/java/com/fmt/github/ext/XPopupExt.kt

@@ -6,6 +6,24 @@ import androidx.lifecycle.MutableLiveData
 import com.fmt.github.AppContext
 import com.fmt.github.R
 import com.lxj.xpopup.XPopup
+import kotlin.coroutines.resume
+import kotlin.coroutines.suspendCoroutine
+
+//回调转协程
+suspend fun showConfirmPopup(context: Context, title: String, message: String) =
+    suspendCoroutine<Boolean> { continuation ->
+        XPopup.Builder(context)
+            .asConfirm(
+                title,
+                message,
+                context.getString(R.string.cancel),
+                context.getString(R.string.sure),
+                { continuation.resume(true) },
+                { continuation.resume(false) },
+                false
+            )
+            .show()
+    }
 
 fun createSortReposPopup(context: Context): LiveData<SortOption> {
     val liveData = MutableLiveData<SortOption>()//LiveData代替回调接口
@@ -67,9 +85,12 @@ fun createSortUsesPopup(context: Context): LiveData<SortOption> {
     XPopup.Builder(context)
         .asBottomList(
             context.getString(R.string.sort_options), arrayOf(
-                context.getString(R.string.best_match), context.getString(R.string.most_followers),
-                context.getString(R.string.fewest_followers), context.getString(R.string.most_recently_joined),
-                context.getString(R.string.least_recently_joined), context.getString(R.string.most_repositories),
+                context.getString(R.string.best_match),
+                context.getString(R.string.most_followers),
+                context.getString(R.string.fewest_followers),
+                context.getString(R.string.most_recently_joined),
+                context.getString(R.string.least_recently_joined),
+                context.getString(R.string.most_repositories),
                 context.getString(R.string.fewest_repositories)
             )
         ) { position, _ ->

app/src/main/java/com/fmt/github/home/activity/HomeActivity.kt

@@ -4,6 +4,7 @@ import android.content.Intent
 import android.view.LayoutInflater
 import android.view.Menu
 import android.view.MenuItem
+import android.widget.Toast
 import androidx.appcompat.app.ActionBarDrawerToggle
 import androidx.core.content.ContextCompat
 import androidx.databinding.DataBindingUtil
@@ -17,6 +18,8 @@ import com.fmt.github.base.viewmodel.BaseViewModel
 import com.fmt.github.constant.Constant
 import com.fmt.github.data.storage.Preference
 import com.fmt.github.databinding.LayoutNavHeaderBinding
+import com.fmt.github.ext.showConfirmPopup
+import com.fmt.github.ext.yes
 import com.fmt.github.home.adapter.HomePageAdapter
 import com.fmt.github.home.viewmodel.HomeViewModel
 import com.fmt.github.user.activity.AboutActivity
@@ -52,7 +55,8 @@ class HomeActivity : BaseVMActivity(), NavigationView.OnNavigationItemSelectedLi
     override fun getViewModel(): BaseViewModel = mViewModel
 
     private fun initUserInfo() {
-        lifecycleScope.launch {//Androidx的协程支持LifecycleScope、ViewModelScope
+        lifecycleScope.launch {
+            //Androidx的协程支持LifecycleScope、ViewModelScope
             mUser = mUserDao.getAll()[0]
             initHeaderLayout()
             initViewPager()
@@ -111,7 +115,7 @@ class HomeActivity : BaseVMActivity(), NavigationView.OnNavigationItemSelectedLi
 
             R.id.item_about -> Intent(this, AboutActivity::class.java).run { startActivity(this) }
 
-            R.id.item_logout -> logout()
+            R.id.item_logout -> showLogoutPopup()
         }
         mDrawerLayout.closeDrawers()//选择菜单时，关闭侧滑菜单
         return true
@@ -146,6 +150,18 @@ class HomeActivity : BaseVMActivity(), NavigationView.OnNavigationItemSelectedLi
         }
     }
 
+    private fun showLogoutPopup() {
+        lifecycleScope.launch {
+            showConfirmPopup(
+                this@HomeActivity,
+                getString(R.string.tips),
+                getString(R.string.logout_message)
+            ).yes {
+                logout()
+            }
+        }
+    }
+
     private fun logout() {
         mViewModel.deleteAuthorization(mUser.uid).observe(this, Observer {
             if (it) {

app/src/main/java/com/fmt/github/user/fragment/UserReposFragment.kt

@@ -60,15 +60,12 @@ class UserReposFragment : BaseListMVFragment<ReposItemModel>(){
         arguments?.let {
             mUserName = it.getString(KEY)
             mIsFavor = it.getBoolean(IS_FAVOR)
-            getListData()
+            initViewModelAction()
             if (mIsFavor) initStarEvent()
         }
     }
 
     override fun getListData() {
-        (mPage == 1).yes {
-            mRefreshLayout.autoRefreshAnimationOnly()
-        }
         mIsFavor.yes {
             mViewModel.getStarredRepos(mUserName, mPage).observe(this, mListObserver)
         }.otherwise {

app/src/main/res/values/strings.xml

@@ -4,8 +4,8 @@
         <item>Repos</item>
         <item>Favor</item>
     </string-array>
-    <string name="open">开启</string>
-    <string name="close">关闭</string>
+    <string name="open">open</string>
+    <string name="close">close</string>
     <string name="go_to_login">Sign in</string>
     <string name="please_enter_search_keywords">Please enter search keywords</string>
     <string name="introduce">I am %s, welcome you to visit my Home Page!</string>
@@ -43,6 +43,11 @@
     <string name="asc">asc</string>
     <string name="desc">desc</string>
 
+    <string name="tips">Tips</string>
+    <string name="logout_message">Are you sure to exit?</string>
+    <string name="cancel">cancel</string>
+    <string name="sure">sure</string>
+
     <string-array name="github_glyph_strings">
         <item>M256 70.7c-102.6 0-185.9 83.2-185.9 185.9 0 82.1 53.3 151.8 127.1 176.4 9.3 1.7 12.3-4
             12.3-8.9V389.4c-51.7 11.3-62.5-21.9-62.5-21.9 -8.4-21.5-20.6-27.2-20.6-27.2 -16.9-11.5 1.3-11.3 1.3-11.3