优化

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

@@ -12,10 +12,10 @@ interface BookSourceDao {
     fun liveDataAll(): LiveData<List<BookSource>>
 
     @Query("select * from book_sources where bookSourceName like :searchKey or bookSourceGroup like :searchKey or bookSourceUrl like :searchKey  or bookSourceComment like :searchKey order by customOrder asc")
-    fun liveDataSearch(searchKey: String = ""): LiveData<List<BookSource>>
+    fun liveDataSearch(searchKey: String): LiveData<List<BookSource>>
 
     @Query("select * from book_sources where bookSourceGroup like :searchKey order by customOrder asc")
-    fun liveDataGroupSearch(searchKey: String = ""): LiveData<List<BookSource>>
+    fun liveDataGroupSearch(searchKey: String): LiveData<List<BookSource>>
 
     @Query("select * from book_sources where enabled = 1 order by customOrder asc")
     fun liveDataEnabled(): LiveData<List<BookSource>>

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

@@ -28,9 +28,15 @@ interface RssSourceDao {
     @Query("SELECT * FROM rssSources where sourceGroup like :key order by customOrder")
     fun liveGroupSearch(key: String): LiveData<List<RssSource>>
 
-    @Query("SELECT * FROM rssSources where enabled = 1 and (sourceName like '%'||:searchKey||'%' or sourceGroup like '%'||:searchKey||'%' or sourceUrl like '%'||:searchKey||'%') order by customOrder")
+    @Query("SELECT * FROM rssSources where enabled = 1 order by customOrder")
+    fun liveEnabled(): LiveData<List<RssSource>>
+
+    @Query("SELECT * FROM rssSources where enabled = 1 and (sourceName like :searchKey or sourceGroup like :searchKey or sourceUrl like :searchKey) order by customOrder")
     fun liveEnabled(searchKey: String): LiveData<List<RssSource>>
 
+    @Query("SELECT * FROM rssSources where enabled = 1 and sourceGroup like :searchKey order by customOrder")
+    fun liveEnabledByGroup(searchKey: String): LiveData<List<RssSource>>
+
     @Query("select sourceGroup from rssSources where trim(sourceGroup) <> ''")
     fun liveGroup(): LiveData<List<String>>
 

app/src/main/java/io/legado/app/ui/main/rss/RssFragment.kt

@@ -92,7 +92,7 @@ class RssFragment : VMBaseFragment<RssSourceViewModel>(R.layout.fragment_rss),
             }
 
             override fun onQueryTextChange(newText: String?): Boolean {
-                initData(newText ?: "")
+                initData(newText)
                 return false
             }
         })
@@ -113,9 +113,16 @@ class RssFragment : VMBaseFragment<RssSourceViewModel>(R.layout.fragment_rss),
         }
     }
 
-    private fun initData(searchKey: String = "") {
+    private fun initData(searchKey: String? = null) {
         liveRssData?.removeObservers(this)
-        liveRssData = App.db.rssSourceDao.liveEnabled(searchKey).apply {
+        liveRssData = when {
+            searchKey.isNullOrEmpty() -> App.db.rssSourceDao.liveEnabled()
+            searchKey.startsWith("group:") -> {
+                val key = searchKey.substringAfter("group:")
+                App.db.rssSourceDao.liveEnabledByGroup("%$key%")
+            }
+            else -> App.db.rssSourceDao.liveEnabled("%$searchKey%")
+        }.apply {
             observe(viewLifecycleOwner, {
                 adapter.setItems(it)
             })

app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt

@@ -199,8 +199,7 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
 
     private fun initLiveDataSource(searchKey: String? = null) {
         sourceLiveData?.removeObservers(this)
-        sourceLiveData =
+        sourceLiveData = when {
-            when {
             searchKey.isNullOrBlank() -> {
                 App.db.rssSourceDao.liveAll()
             }
@@ -211,11 +210,12 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
             else -> {
                 App.db.rssSourceDao.liveSearch("%$searchKey%")
             }
-            }
+        }.apply {
-        sourceLiveData?.observe(this, {
+            observe(this@RssSourceActivity, {
                 adapter.setItems(it, adapter.diffItemCallback)
             })
         }
+    }
 
     private fun showHelp() {
         val text = String(assets.open("help/SourceMRssHelp.md").readBytes())