up

app/src/main/java/io/legado/app/data/dao/RssArticleDao.kt

@@ -18,4 +18,7 @@ interface RssArticleDao {
 
     @Update
     fun update(vararg rssArticle: RssArticle)
+
+    @Query("delete from rssArticles where origin = :origin")
+    fun delete(origin: String)
 }

app/src/main/java/io/legado/app/ui/rss/article/RssArticlesActivity.kt

@@ -1,6 +1,8 @@
 package io.legado.app.ui.rss.article
 
 import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
@@ -38,6 +40,25 @@ class RssArticlesActivity : VMBaseActivity<RssArticlesViewModel>(R.layout.activi
         }
     }
 
+    override fun onCompatCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.rss_articles, menu)
+        return super.onCompatCreateOptionsMenu(menu)
+    }
+
+    override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            R.id.menu_clear -> {
+                intent.getStringExtra("url")?.let {
+                    refresh_progress_bar.isAutoLoading = true
+                    viewModel.loadContent(it) {
+                        refresh_progress_bar.isAutoLoading = false
+                    }
+                }
+            }
+        }
+        return super.onCompatOptionsItemSelected(item)
+    }
+
     private fun initView() {
         ATH.applyEdgeEffectColor(recycler_view)
         recycler_view.layoutManager = LinearLayoutManager(this)

app/src/main/java/io/legado/app/ui/rss/article/RssArticlesViewModel.kt

@@ -42,4 +42,10 @@ class RssArticlesViewModel(application: Application) : BaseViewModel(application
         }
     }
 
+    fun clear(url: String, onFinally: () -> Unit) {
+        execute {
+            App.db.rssArtivleDao().delete(url)
+            loadContent(url, onFinally)
+        }
+    }
 }