correct build.gradle

src/.idea/gradle.xml

@@ -12,10 +12,12 @@
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/CalendarView" />
+            <option value="$PROJECT_DIR$/DataBase" />
             <option value="$PROJECT_DIR$/app" />
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />
+        <option name="useQualifiedModuleNames" value="true" />
       </GradleProjectSettings>
     </option>
   </component>

src/.idea/runConfigurations.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>

src/DataBase/.gitignore

@@ -0,0 +1 @@
+/build

src/DataBase/build.gradle

@@ -0,0 +1,38 @@
+plugins {
+    id 'com.android.library'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        minSdkVersion 29
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles "consumer-rules.pro"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.2.1'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+}

src/DataBase/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

src/DataBase/src/androidTest/java/com/showme/database/ExampleInstrumentedTest.java

@@ -0,0 +1,26 @@
+package com.showme.database;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.showme.database.test", appContext.getPackageName());
+    }
+}

src/DataBase/src/main/AndroidManifest.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.showme.database">
+
+</manifest>

src/DataBase/src/main/java/com/showme/database/DatabaseHelper/CourseSQLHelper.java

@@ -0,0 +1,33 @@
+package com.showme.database.DatabaseHelper;
+
+import android.content.Context;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+public class CourseSQLHelper extends SQLiteOpenHelper {
+    private static final String db_name = "course";//自定义的数据库名；
+    private static final int version = 2;//版本号
+
+    public CourseSQLHelper(Context context) {
+        super(context, db_name, null, version);
+    }
+
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+        db.execSQL("create table courses(" +
+                "id integer primary key autoincrement," +
+                "course_name text," +
+                "teacher text," +
+                "class_room text," +
+                "day integer," +
+                "class_start integer," +
+                "class_end integer," +
+                "weeks text)");
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        db.execSQL("drop table if exists schedules");
+        onCreate(db);
+    }
+}

src/DataBase/src/main/java/com/showme/database/DatabaseHelper/ScheduleSQLHelper.java

@@ -0,0 +1,39 @@
+package com.showme.database.DatabaseHelper;
+
+import android.content.Context;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+public class ScheduleSQLHelper extends SQLiteOpenHelper {
+    private static final String db_name = "MySchedule";//自定义的数据库名；
+    private static final int version = 98889;//版本号
+
+    public ScheduleSQLHelper(Context context) {
+        super(context, db_name, null, version);
+    }
+
+    // 该方法会自动调用，首先系统会检查该程序中是否存在数据库名为‘MySchedule’的数据库
+    // 如果存在则不会执行该方法，如果不存在则会执行该方法。
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+        String sql = "create table schedules(" +
+                "id Integer primary key autoincrement," +     //id自增,只支持integer不支持int
+                "scheduleName varchar(50)," +
+                "schedulePlace varchar(50)," +
+                "ifSchedulePlace integer," +
+                "startTime varchar(50)," +
+                "ifStartTime integer," +
+                "endTime varchar(50)," +
+                "ifEndTime interger," +
+                "time varchar(30)" +
+                ")";
+        db.execSQL(sql);
+    }
+
+    //数据库版本更新时执行该方法,如果表已存在则先删除再调用onCreate重新创建
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        db.execSQL("drop table if exists schedules");
+        onCreate(db);
+    }
+}

src/DataBase/src/main/java/com/showme/database/MySQLiteDatabase.java

@@ -0,0 +1,12 @@
+package com.showme.database;
+
+import android.database.sqlite.SQLiteDatabase;
+
+public class MySQLiteDatabase {
+    public static SQLiteDatabase scheduleSQL;
+
+    public static SQLiteDatabase courseSQL;
+
+    public static SQLiteDatabase zoneSQL;
+
+}

src/DataBase/src/main/java/com/showme/database/utils/CourseSQLUtils.java

@@ -0,0 +1,10 @@
+package com.showme.database.utils;
+
+import android.database.sqlite.SQLiteDatabase;
+
+import com.showme.database.MySQLiteDatabase;
+
+public class CourseSQLUtils {
+    private static SQLiteDatabase courseSQL = MySQLiteDatabase.courseSQL;
+
+}

src/DataBase/src/main/java/com/showme/database/utils/ScheduleSQLUtils.java

@@ -0,0 +1,69 @@
+package com.showme.database.utils;
+
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+
+import com.showme.database.MySQLiteDatabase;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ScheduleSQLUtils {
+    private static SQLiteDatabase database = MySQLiteDatabase.scheduleSQL;
+
+    public static List<String> queryByDate(String date) {
+        //columns为null 查询所有列
+        List<String> res = new ArrayList<>();
+        String aScheduleName;
+        Cursor cursor = database.query("schedules",null,"time=?",new String[]{date},null,null,null);
+        if(cursor.moveToFirst()){
+            int scheduleCount = 0;
+            do{
+                aScheduleName = cursor.getString(cursor.getColumnIndex("scheduleName"));
+                String aStartTime = cursor.getString(cursor.getColumnIndex("startTime"));
+                Integer ifStartTime = cursor.getInt(cursor.getColumnIndex("ifStartTime"));
+                String aEndTime = cursor.getString(cursor.getColumnIndex("endTime"));
+                Integer ifEndTime = cursor.getInt(cursor.getColumnIndex("ifEndTime"));
+                String scheduleText = aScheduleName;
+
+                if(ifStartTime == 1){
+                    scheduleText += "($时间:"+aStartTime;
+
+                    if(ifEndTime ==1){
+                        scheduleText += "\n"+aEndTime;
+                    } else {
+                        scheduleText += "\n24:00";
+                    }
+                } else {
+                    scheduleText += "($时间: 00:00\n24:00";
+                }
+
+                scheduleCount++;
+                res.add(scheduleText);
+            }while (cursor.moveToNext());
+        }
+        cursor.close();
+        return res;
+    }
+
+    public static String extractScheduleName(String scheduleText) {
+        int index = scheduleText.indexOf("($时间:");
+        if (index != -1) {
+            return scheduleText.substring(0, index);
+        }
+        return null;
+    }
+
+    public static String extractScheduleTime(String scheduleText) {
+        int index = scheduleText.indexOf("($时间:");
+        if (index != -1) {
+            return scheduleText.substring(index+5);
+        }
+        return null;
+    }
+
+    public static boolean isScheduleMarked(String date) {
+        Cursor cursor = database.query("schedules",null,"time=?",new String[]{date},null,null,null);
+        return cursor.moveToFirst();
+    }
+}

src/DataBase/src/test/java/com/showme/database/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package com.showme.database;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}

src/app/build.gradle

@@ -34,6 +34,7 @@ dependencies {
     implementation 'com.google.android.material:material:1.2.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
     implementation project(path: ':CalendarView')
+    implementation project(path: ':DataBase')
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'

src/settings.gradle

@@ -1,3 +1,4 @@
+include ':DataBase'
 include ':app'
 rootProject.name = "My Application"
 include ':CalendarView'