android 跳转到应用通知设置界面(Android 8.0以上)

boolean areNotificationsEnabled = mNotificationManagerCompat.areNotificationsEnabled();        if (!areNotificationsEnabled) {            // Because the user took an action to create a notification, we create a prompt to let            // the user re-enable notifications for this application again.            Snackbar snackbar = Snackbar                    .make(                            mMainRelativeLayout,                            "You need to enable notifications for this app",                            Snackbar.LENGTH_LONG)                    .setAction("ENABLE", new View.OnClickListener() {                        @Override                        public void onClick(View view) {                            // Links to this app's notification settings                            openNotificationSettingsForApp();                        }                    });            snackbar.show();            return;        }

首先通过areNotificationsEnabled查询应用是否有通知权限，如果没有则执行openNotificationSettingsForApp()方法。

private void openNotificationSettingsForApp() {     // Links to this app's notification settings.     Intent intent = new Intent();     intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);     //这种方案适用于 API 26, 即8.0（含8.0）以上可以用     intent.putExtra(Settings.EXTRA_APP_PACKAGE, getApplicationContext().getPackageName());     intent.putExtra(Settings.EXTRA_CHANNEL_ID, getApplicationInfo().uid);     //这种方案适用于 API21——25，即 5.0——7.1 之间的版本可以使用     intent.putExtra("app_package", pkg);     intent.putExtra("app_uid", uid);     startActivity(intent); }

通过intent启动系统应用的通知管理界面。

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