使书籍目录能够模糊搜索

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

@@ -13,6 +13,9 @@ interface BookChapterDao {
     @Query("select * from chapters where bookUrl = :bookUrl")
     fun observeByBook(bookUrl: String): LiveData<List<BookChapter>>
 
+    @Query("SELECT * FROM chapters where title like '%'||:key||'%'")
+    fun liveDataSearch(key: String): LiveData<List<BookChapter>>
+
     @Query("select * from chapters where bookUrl = :bookUrl")
     fun getChapterList(bookUrl: String): List<BookChapter>
 

app/src/main/java/io/legado/app/ui/chapterlist/ChapterListActivity.kt

@@ -18,6 +18,7 @@ import io.legado.app.utils.visible
 import kotlinx.android.synthetic.main.activity_chapter_list.*
 import kotlinx.android.synthetic.main.view_tab_layout.*
 
+
 class ChapterListActivity : VMBaseActivity<ChapterListViewModel>(R.layout.activity_chapter_list) {
     override val viewModel: ChapterListViewModel
         get() = getViewModel(ChapterListViewModel::class.java)
@@ -52,6 +53,11 @@ class ChapterListActivity : VMBaseActivity<ChapterListViewModel>(R.layout.activi
             }
 
             override fun onQueryTextChange(newText: String): Boolean {
+                if (tab_layout.selectedTabPosition == 1) {
+
+                } else {
+                    viewModel.startChapterListSearch(newText)
+                }
                 return false
             }
         })

app/src/main/java/io/legado/app/ui/chapterlist/ChapterListFragment.kt

@@ -5,6 +5,7 @@ import android.content.Intent
 import android.os.Bundle
 import android.view.View
 import android.widget.LinearLayout
+import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -19,11 +20,13 @@ import kotlinx.android.synthetic.main.fragment_chapter_list.*
 import org.jetbrains.anko.sdk27.listeners.onClick
 
 class ChapterListFragment : VMBaseFragment<ChapterListViewModel>(R.layout.fragment_chapter_list),
-    ChapterListAdapter.Callback {
+    ChapterListAdapter.Callback,
+    ChapterListViewModel.CallBack {
     override val viewModel: ChapterListViewModel
         get() = getViewModelOfActivity(ChapterListViewModel::class.java)
 
     lateinit var adapter: ChapterListAdapter
+    private var chapterData: LiveData<List<BookChapter>>? = null
     private var durChapterIndex = 0
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -71,6 +74,20 @@ class ChapterListFragment : VMBaseFragment<ChapterListViewModel>(R.layout.fragme
                 recycler_view.scrollToPosition(it.durChapterIndex)
             }
         }
+        viewModel.callBack = this
+    }
+
+    override fun startSearch(newText: String?) {
+        chapterData?.removeObservers(this)
+        if (newText.isNullOrBlank()) {
+            initData()
+        } else {
+            chapterData = App.db.bookChapterDao().liveDataSearch(newText)
+            chapterData?.observe(viewLifecycleOwner, Observer {
+                adapter.setItems(it)
+            })
+            recycler_view.scrollToPosition(0)
+        }
     }
 
     override fun durChapterIndex(): Int {

app/src/main/java/io/legado/app/ui/chapterlist/ChapterListViewModel.kt

@@ -9,6 +9,7 @@ import io.legado.app.data.entities.Book
 class ChapterListViewModel(application: Application) : BaseViewModel(application) {
     var bookUrl: String? = null
     var book: Book? = null
+    var callBack: CallBack? = null
 
     fun loadBook(success: () -> Unit) {
         execute {
@@ -19,4 +20,12 @@ class ChapterListViewModel(application: Application) : BaseViewModel(application
             success()
         }
     }
+
+    fun startChapterListSearch(newText: String?) {
+        callBack?.startSearch(newText)
+    }
+
+    interface CallBack {
+        fun startSearch(newText: String?)
+    }
 }