code@20241001

app-catalog/samples/basic/src/main/AndroidManifest.xml

@@ -102,6 +102,21 @@
             android:exported="true"
             android:theme="@style/Theme.AppCompat.DayNight" />
 
+        <activity
+            android:name=".prejob.uiDemo.ep2_1"
+            android:exported="true"
+            android:theme="@style/Theme.AppCompat.DayNight" />
+
+        <activity
+            android:name=".prejob.uiDemo.ep2_2"
+            android:exported="true"
+            android:theme="@style/Theme.AppCompat.DayNight" />
+
+        <activity
+            android:name=".job.DbEntryActivity"
+            android:exported="true"
+            android:theme="@style/Theme.AppCompat.DayNight" />
+
         <!--        <activity android:name=".ep3_1second"-->
         <!--            android:icon="@drawable/rabbit"-->
         <!--            android:label="关于"-->

app-catalog/samples/basic/src/main/java/com/wintmain/basic/job/DbEntryActivity.kt

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2023-2024 wintmain
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.wintmain.basic.job
+
+import android.os.Bundle
+import android.os.PersistableBundle
+import android.widget.Button
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import com.google.android.catalog.framework.annotations.Sample
+import com.wintmain.basic.R
+
+@Sample(
+    name = "数据库示例",
+    description = "数据库的创建添加",
+    documentation = "",
+    tags = ["A-Self_demos"],
+)
+class DbEntryActivity : AppCompatActivity(R.layout.activity_db_entry) {
+    private lateinit var dbHelper: DbHelper
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        // Initialize DbHelper
+        dbHelper = DbHelper(applicationContext)
+        dbHelper.writableDatabase // Ensure database is created
+        addlisteners()
+    }
+
+    private fun addlisteners() {
+        findViewById<Button>(R.id.button_create).setOnClickListener {
+            // You may not need to do anything here as the database is already created in onCreate
+            Toast.makeText(applicationContext, "Create success.", Toast.LENGTH_LONG).show()
+        }
+        findViewById<Button>(R.id.button_add).setOnClickListener {
+            DbHelper.addToWhitelist(this, "com.wintmain.catalog.app")
+            Toast.makeText(this, "Add success.", Toast.LENGTH_LONG).show()
+        }
+        findViewById<Button>(R.id.button_remove).setOnClickListener {
+            DbHelper.removeFromWhitelist(this, "com.wintmain.catalog.app")
+            Toast.makeText(this, "Remove success.", Toast.LENGTH_LONG).show()
+        }
+        findViewById<Button>(R.id.button_getall).setOnClickListener {
+            DbHelper.addToWhitelist(this, "com.wintmain.catalog.app1")
+            DbHelper.addToWhitelist(this, "com.wintmain.catalog.app2")
+            DbHelper.addToWhitelist(this, "com.wintmain.catalog.app3")
+            val listall = DbHelper.getWhitelist(this)
+            Toast.makeText(this, "GetAll success: $listall", Toast.LENGTH_LONG).show()
+        }
+    }
+}

app-catalog/samples/basic/src/main/java/com/wintmain/basic/job/DbHelper.java

@@ -0,0 +1,118 @@
+/*
+ * Copyright 2023-2024 wintmain
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.wintmain.basic.job;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.provider.BaseColumns;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class DbHelper extends SQLiteOpenHelper {
+    private static final String DATABASE_NAME = "demo_whitelist.db";
+    private static final int DATABASE_VERSION = 1;
+
+    public static class WhitelistEntry implements BaseColumns {
+        public static final String TABLE_NAME = "whitelist";
+        public static final String COLUMN_PACKAGE_NAME = "package_name";
+    }
+
+    private static final String SQL_CREATE_ENTRIES = "CREATE TABLE " + WhitelistEntry.TABLE_NAME
+            + " (" + WhitelistEntry._ID + " INTEGER PRIMARY KEY," + WhitelistEntry.COLUMN_PACKAGE_NAME
+            + " TEXT)";
+    private static final String SQL_DELETE_ENTRIES = "DROP TABLE IF EXISTS " + WhitelistEntry.TABLE_NAME;
+
+    public DbHelper(Context context) {
+        super(context, DATABASE_NAME, null, DATABASE_VERSION);
+    }
+
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+        db.execSQL(SQL_CREATE_ENTRIES);
+        Log.d("DbHelper", "Database created");
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int i, int i1) {
+        db.execSQL(SQL_DELETE_ENTRIES);
+        onCreate(db);
+    }
+
+    public static void addToWhitelist(Context context, String packageName) {
+        DbHelper dbHelper = new DbHelper(context);
+        SQLiteDatabase db = null;
+        try {
+            db = dbHelper.getWritableDatabase();
+            ContentValues values = new ContentValues();
+            values.put(WhitelistEntry.COLUMN_PACKAGE_NAME, packageName);
+            db.insert(WhitelistEntry.TABLE_NAME, null, values);
+        } catch (Exception e) {
+            Log.e("DbHelper", "Error adding to whitelist", e);
+        } finally {
+            if (db != null) {
+                db.close();
+            }
+        }
+    }
+
+    // 从白名单列表中移除包名
+    public static void removeFromWhitelist(Context context, String packageName) {
+        DbHelper dbHelper = new DbHelper(context);
+        SQLiteDatabase db = dbHelper.getWritableDatabase();
+
+        String selection = WhitelistEntry.COLUMN_PACKAGE_NAME + " = ?";
+        String[] selectionArgs = { packageName };
+
+        db.delete(WhitelistEntry.TABLE_NAME, selection, selectionArgs);
+        db.close();
+    }
+
+    // 获取白名单列表
+    public static List<String> getWhitelist(Context context) {
+        DbHelper dbHelper = new DbHelper(context);
+        SQLiteDatabase db = dbHelper.getReadableDatabase();
+
+        String[] projection = { WhitelistEntry.COLUMN_PACKAGE_NAME };
+
+        Cursor cursor = db.query(
+                WhitelistEntry.TABLE_NAME,
+                projection,
+                null,
+                null,
+                null,
+                null,
+                null
+        );
+
+        List<String> whitelist = new ArrayList<>();
+        while (cursor.moveToNext()) {
+            String packageName = cursor.getString(cursor.getColumnIndexOrThrow(
+                    WhitelistEntry.COLUMN_PACKAGE_NAME));
+            whitelist.add(packageName);
+        }
+
+        cursor.close();
+        db.close();
+
+        return whitelist;
+    }
+}

app-catalog/samples/basic/src/main/java/com/wintmain/basic/prejob/uiDemo/Ep2_UIExt.kt

@@ -0,0 +1,133 @@
+/*
+ * Copyright 2023-2024 wintmain
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.wintmain.basic.prejob.uiDemo
+
+import android.annotation.SuppressLint
+import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.os.Message
+import android.view.View
+import android.widget.ArrayAdapter
+import android.widget.AutoCompleteTextView
+import android.widget.Button
+import android.widget.ProgressBar
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import com.google.android.catalog.framework.annotations.Sample
+import com.wintmain.basic.R
+
+
+@Sample(
+    name = "ArrayAdapter",
+    description = "Adapter适配器入门",
+    documentation = "",
+    tags = ["A-Self_demos"],
+)
+class ep2_1 : AppCompatActivity() {
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.example2_1)
+
+        // 获取自动完成文本框
+        val textView =
+            findViewById<View>(R.id.autoCompleteTextView1) as AutoCompleteTextView
+        // 创建一个ArrayAdapter适配器
+        val adapter =
+            ArrayAdapter(this, android.R.layout.simple_dropdown_item_1line, COUNTRIES)
+        // 为自动完成文本框设置适配器
+        textView.setAdapter(adapter)
+
+        val button = findViewById<View>(R.id.button1) as Button
+        button.setOnClickListener {
+            Toast.makeText(
+                this@ep2_1,
+                textView.text.toString(),
+                Toast.LENGTH_SHORT
+            ).show()
+        }
+    }
+
+    companion object {
+        private val COUNTRIES =
+            arrayOf("android", "android app", "android开发", "开发应用", "开发者")
+    }
+}
+
+@Sample(
+    name = "进度条",
+    description = "进度条展示入门",
+    documentation = "",
+    tags = ["A-Self_demos"],
+)
+class ep2_2 : AppCompatActivity() {
+    private var horizonP: ProgressBar? = null // 水平进度条
+    private var circleP: ProgressBar? = null // 圆形进度条
+    private var mProgressStatus = 0 // 完成进度
+    private var mHandler: Handler // 声明一个用于处理消息的Handler类的对象
+
+    init {
+        // 使用主线程的 Looper 创建 Handler
+        mHandler = Handler(Looper.getMainLooper()) {
+            when (it.what) {
+                0x111 -> {
+                    horizonP!!.progress = mProgressStatus // 更新进度
+                }
+                0x110 -> {
+                    Toast.makeText(this@ep2_2, "耗时操作已经完成", Toast.LENGTH_SHORT).show()
+                    horizonP!!.visibility = View.GONE // 设置进度条不显示，并且不占用空间
+                    circleP!!.visibility = View.GONE
+                }
+            }
+            true // 表示消息被处理
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.example2_2)
+
+        horizonP = findViewById(R.id.progressBar1) // 获取进度条
+        circleP = findViewById(R.id.progressBar2)
+
+        Thread {
+            while (true) {
+                mProgressStatus = doWork() // 获取耗时操作完成的百分比
+                val m = Message()
+                if (mProgressStatus < 100) {
+                    m.what = 0x111
+                    mHandler.sendMessage(m) // 发送信息
+                } else {
+                    m.what = 0x110
+                    mHandler.sendMessage(m) // 发送消息
+                    break
+                }
+            }
+        }.start() // 开启一个线程
+    }
+
+    // 模拟一个耗时操作
+    private fun doWork(): Int {
+        mProgressStatus = (mProgressStatus + (Math.random() * 10)).toInt() // 改变完成进度
+        try {
+            Thread.sleep(200) // 线程休眠200毫秒
+        } catch (e: InterruptedException) {
+            e.printStackTrace()
+        }
+        return mProgressStatus
+    }
+}