update

app/build.gradle

@@ -45,6 +45,7 @@ android {
 }
 
 dependencies {
+    def room_version = "2.2.5"
     implementation fileTree(dir: "libs", include: ["*.jar"])
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation 'androidx.appcompat:appcompat:1.2.0'
@@ -72,4 +73,8 @@ dependencies {
     implementation 'com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.95'
     implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
 
+
+    implementation "androidx.room:room-runtime:$room_version"
+    annotationProcessor "androidx.room:room-compiler:$room_version"
+
 }

app/src/main/java/com/yutou/nas_music_player/Datas/MusicData.java

@@ -18,30 +18,59 @@ import com.yutou.nas_music_player.tools.StringUtil;
 
 import androidx.annotation.Nullable;
 import androidx.palette.graphics.Palette;
+import androidx.room.ColumnInfo;
+import androidx.room.Entity;
+import androidx.room.Ignore;
+import androidx.room.PrimaryKey;
 
+@Entity
 public class MusicData {
+    @PrimaryKey(autoGenerate = true)
+    private int id;
+    @ColumnInfo(name="artist")
     private String artist;//艺术家
+    @ColumnInfo(name="album")
     private String album;//专辑
+    @ColumnInfo(name="title")
     private String title;//标题
+    @ColumnInfo(name="comment")
     private String comment;//评论
+    @ColumnInfo(name="year")
     private String year;//年份
+    @ColumnInfo(name="track")
     private String track;//音轨号
+    @ColumnInfo(name="disc_no")
     private String disc_no;//碟片编号
+    @ColumnInfo(name="composer")
     private String composer;//作曲
+    @ColumnInfo(name="artist_sort")
     private String artist_sort;//分类
+    @ColumnInfo(name="lastDir")
     private String lastDir;//上一个文件夹
+    @ColumnInfo(name="file")
     private String file;
+    @ColumnInfo(name="isDir")
     private boolean isDir = false;
+    @Ignore
     private Bitmap img;
 
+    @ColumnInfo
     private int bitRate;//比特率
+    @ColumnInfo
     private int sampleRate;//采样率
+    @ColumnInfo
     private long noOfSamples;//采样数
+    @ColumnInfo
     private int channelCount;//声道
+    @ColumnInfo
     private String encodingType;//解码类型
+    @ColumnInfo
     private double durationAsDouble;//持续时长
+    @ColumnInfo
     private boolean lossless;//无损
+    @ColumnInfo
     private boolean variableBitRate;//固定码率
+    @ColumnInfo
     private String md5;//确保是同一个文件
 
     public MusicData() {

app/src/main/java/com/yutou/nas_music_player/tools/SQLiteManager.java

@@ -0,0 +1,31 @@
+package com.yutou.nas_music_player.tools;
+
+import androidx.annotation.NonNull;
+import androidx.room.Database;
+import androidx.room.DatabaseConfiguration;
+import androidx.room.InvalidationTracker;
+import androidx.room.RoomDatabase;
+import androidx.sqlite.db.SupportSQLiteOpenHelper;
+
+import com.yutou.nas_music_player.Datas.MusicData;
+
+@Database(entities = {MusicData.class},version = 1)
+public abstract  class SQLiteManager extends RoomDatabase {
+
+    @NonNull
+    @Override
+    protected SupportSQLiteOpenHelper createOpenHelper(DatabaseConfiguration config) {
+        return null;
+    }
+
+    @NonNull
+    @Override
+    protected InvalidationTracker createInvalidationTracker() {
+        return null;
+    }
+
+    @Override
+    public void clearAllTables() {
+
+    }
+}