我正在尝试使用ActivityResultLauncher#launch()函数在Android程序中请求运行时用户权限。它应该创建一个权限对话框，请求用户授予所请求的权限。但在我的程序中，对话不到半秒就消失了。你能指出我错在哪里吗？
我使用以下代码片段在主Activity中请求权限：

if (ActivityCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_SCAN) != PackageManager.PERMISSION_GRANTED) {
        Log.i(TAG, "Bluetooth scan permission denied. Requesting...");
        requestPermissionLauncher.launch(Manifest.permission.BLUETOOTH_SCAN);
        Log.i(TAG, "Permission requested. Awaiting user response");
        return;
}

requestPermissionLauncher在练习中定义为fallows：

private ActivityResultLauncher<String> requestPermissionLauncher =
            registerForActivityResult(new ActivityResultContracts.RequestPermission(), isGranted -> {
            if (isGranted) {
                Log.i(TAG, "Requested permission granted!");
                scanLeDevice();
            } else {
                Log.e(TAG, "Requested permission denied!");
                Toast.makeText(this, "Permission denied! Sorry, we can't continue.", Toast.LENGTH_LONG);
            }
        });

某些选定的Logcat消息将作为fallows：

---------------------------- PROCESS STARTED (4871) for package com.example.ble_imu_data_viewer ----------------------------
...
2023-06-11 19:57:01.623  4871-4871  important_info          com.example.ble_imu_data_viewer      I  Bluetooth scan permission denied. Requesting...
2023-06-11 19:57:01.648  4871-4871  important_info          com.example.ble_imu_data_viewer      I  Permission requested. Awaiting user response
2023-06-11 19:57:01.709  4871-4871  ActivityThread          com.example.ble_imu_data_viewer      D  add activity client record, r= ActivityRecord{af555b6 token=android.os.BinderProxy@5980385 {com.example.ble_imu_data_viewer/com.example.ble_imu_data_viewer.MainActivity}} token= android.os.BinderProxy@5980385
2023-06-11 19:57:01.720  4871-4871  ZrHung.AppEyeUiProbe    com.example.ble_imu_data_viewer      D  notify runnable to start.
2023-06-11 19:57:01.737  4871-4871  OpenGLRenderer          com.example.ble_imu_data_viewer      D  Skia GL Pipeline
2023-06-11 19:57:01.750  4871-4871  HwAppInnerBoostImpl     com.example.ble_imu_data_viewer      D  set config for com.example.ble_imu_data_viewer BOOST_FLAG=false REPORT_DURATION_CLICK=1000 REPORT_TIMES_CLICK=3 REPORT_DURATION_SLIDE=5000 REPORT_TIMES_SLIDE=16
2023-06-11 19:57:01.753  4871-4871  OpenGLRenderer          com.example.ble_imu_data_viewer      D    HWUI Binary is  enabled
2023-06-11 19:57:01.753  4871-4871  OpenGLRenderer          com.example.ble_imu_data_viewer      D  disableOutlineDraw is true
2023-06-11 19:57:01.792  1263-1506  HiDATA_HiNetwork        system_server                        E  monitor handleActivityChange curPkgName is com.example.ble_imu_data_viewer curUid is 10174 lastPkgName is :com.huawei.android.launcher
2023-06-11 19:57:01.796  4871-4871  ZrHung.AppEyeUiProbe    com.example.ble_imu_data_viewer      D  stop checker.
2023-06-11 19:57:01.802  1263-1506  HiDATA_HiNetwork        system_server                        E  onAppStart packageName is com.example.ble_imu_data_viewer
2023-06-11 19:57:01.803  1263-1506  HiDATA_HiNetwork        system_server                        E  contain db file packageName: com.example.ble_imu_data_viewer iscanacce:-1
2023-06-11 19:57:01.806  1730-10535 DollieAdapterService    com.huawei.systemserver              E  notifyActivityState pkg:com.example.ble_imu_data_viewer/com.example.ble_imu_data_viewer.MainActivity state:2 fg:true mUid:10174
...
2023-06-11 19:57:11.906  4871-4871  important_info          com.example.ble_imu_data_viewer      E  Requested permission denied!
2023-06-11 19:57:11.919  4871-4871  ZrHung.AppEyeUiProbe    com.example.ble_imu_data_viewer      D  notify runnable to start.
2023-06-11 19:57:11.936  4871-4871  InputMethodManager      com.example.ble_imu_data_viewer      W  startInputReason = 1
2023-06-11 19:57:11.937  1263-1506  HiDATA_HiNetwork        system_server                        E  monitor handleActivityChange curPkgName is com.example.ble_imu_data_viewer curUid is 10174 lastPkgName is :com.example.ble_imu_data_viewer
2023-06-11 19:57:11.938  1730-10535 DollieAdapterService    com.huawei.systemserver              E  notifyActivityState pkg:com.example.ble_imu_data_viewer/com.example.ble_imu_data_viewer.MainActivity state:2 fg:true mUid:10174
...

我已经通过在Manifest文件中声明了所请求的权限BLUETOOTH_SCAN

<uses-permission android:name="android.permission.BLUETOOTH_SCAN" tools:remove="android:maxSdkVersion"/>

完整的源代码和完整的Logcat内容如下：
AndroidManifest.xml
MainActivity.java
build.gradle
Complete Logcat content