如何显示从状态栏通知开始的权限活动？

显示从状态栏通知开始的权限活动，可以通过以下步骤实现：

1. 在AndroidManifest.xml文件中，添加以下权限：<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />private static final int REQUEST_CODE_NOTIFICATION_ACTIVITY = 1000; private void requestNotificationActivityPermission() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { if (!Settings.canDrawOverlays(this)) { Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName())); startActivityForResult(intent, REQUEST_CODE_NOTIFICATION_ACTIVITY); } } }@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); requestNotificationActivityPermission(); }@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == REQUEST_CODE_NOTIFICATION_ACTIVITY) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { if (!Settings.canDrawOverlays(this)) { // 权限被拒绝 Toast.makeText(this, "权限被拒绝，无法显示通知", Toast.LENGTH_SHORT).show(); } else { // 权限被授权 showNotification(); } } } }private void showNotification() { WindowManager windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE); WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams( WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.TYPE_PHONE, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT); layoutParams.gravity = Gravity.TOP | Gravity.START; layoutParams.x = 0; layoutParams.y = 100; TextView textView = new TextView(this); textView.setText("这是一个通知"); textView.setTextColor(Color.WHITE); textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 16); textView.setBackgroundColor(Color.BLACK); textView.setPadding(10, 10, 10, 10); windowManager.addView(textView, layoutParams); Handler handler = new Handler(); handler.postDelayed(new Runnable() { @Override public void run() { windowManager.removeView(textView); } }, 3000); }现在，当用户授权了权限后，就可以在状态栏显示通知了。
2. 在需要显示通知的Activity中，添加以下代码：
3. 在Activity的onCreate方法中，调用requestNotificationActivityPermission方法：
4. 在Activity的onActivityResult方法中，处理权限请求结果：
5. 在Activity中，创建一个方法showNotification，用于显示通知：