4.4以下并没有提过从app跳转到应用通知设置页面的Action，可考虑跳转到应用详情页面,下面是直接跳转到应用通知设置的代码：
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Intent intent = new Intent();
intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
intent.putExtra("app_package", getActivity().getPackageName());
intent.putExtra("app_uid", getActivity().getApplicationInfo().uid);
startActivity(intent);
} else if (android.os.Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setData(Uri.parse("package:" + getActivity().getPackageName()));
startActivity(intent);
}
跳转到应用详情页面的代码如下：
Intent localIntent = new Intent();
localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (Build.VERSION.SDK_INT >= 9) {
localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
localIntent.setData(Uri.fromParts("package", getActivity().getPackageName(), null));
} else if (Build.VERSION.SDK_INT <= 8) {
localIntent.setAction(Intent.ACTION_VIEW);
localIntent.setClassName("com.android.settings", "com.android.settings.InstalledAppDetails");
localIntent.putExtra("com.android.settings.ApplicationPkgName", getActivity().getPackageName());
}
startActivity(localIntent);
对于检测app是否开启通知，同样是针对4.4以上的系统才有效:
NotificationManagerCompat manager = NotificationManagerCompat.from(App.getInstance().getContext());
boolean isOpened = manager.areNotificationsEnabled();
4.4以下调用该方法并不会出错，只是全部返回true,默认开启状态
网友评论
参见源码：Input: EXTRA_APP_PACKAGE, the package to display. Constant Value: "android.provider.extra.APP_PACKAGE"，其中渠道ID为可选，可不设置。见
Input: Optionally, {@link #EXTRA_CHANNEL_ID}, to highlight that channel.
因此对于Android O版本可做以下处理：
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);
intent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());
context.startActivity(intent);
}