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现在一般应用都需要集成推送功能,给用户推送一些相关的消息,这就需要应用取得应用通知栏权限,但是目前国内大部分厂商默认都是不开启通知栏权限的,所以在需要的时候,就要先检测是否开启通知栏权限,如果未开启,则要引导用户去设置中打开通知栏权限。
不多比比,直接上代码:
public class NotificationUtil {
private static final String CHECK_OP_NO_THROW = "checkOpNoThrow";
private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";
//调用该方法获取是否开启通知栏权限
public static boolean isNotifyEnabled(Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
return isEnableV26(context);
} else {
return isEnabledV19(context);
}
}
/**
* 8.0以下判断
*
* @param context api19 4.4及以上判断
* @return
*/
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
private static boolean isEnabledV19(Context context) {
AppOpsManager mAppOps =
(AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
ApplicationInfo appInfo = context.getApplicationInfo();
String pkg = context.getApplicationContext().getPackageName();
int uid = appInfo.uid;
Class appOpsClass = null;
try {
appOpsClass = Class.forName(AppOpsManager.class.getName());
Method checkOpNoThrowMethod =
appOpsClass.getMethod(CHECK_OP_NO_THROW,
Integer.TYPE, Integer.TYPE, String.class);
Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);
int value = (Integer) opPostNotificationValue.get(Integer.class);
return ((Integer) checkOpNoThrowMethod.invoke(mAppOps, value, uid, pkg) ==
AppOpsManager.MODE_ALLOWED);
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
/**
* 8.0及以上通知权限判断
*
* @param context
* @return
*/
private static boolean isEnableV26(Context context) {
ApplicationInfo appInfo = context.getApplicationInfo();
String pkg = context.getApplicationContext().getPackageName();
int uid = appInfo.uid;
try {
NotificationManager notificationManager = (NotificationManager)
context.getSystemService(Context.NOTIFICATION_SERVICE);
Method sServiceField = notificationManager.getClass().getDeclaredMethod("getService");
sServiceField.setAccessible(true);
Object sService = sServiceField.invoke(notificationManager);
Method method = sService.getClass().getDeclaredMethod("areNotificationsEnabledForPackage"
, String.class, Integer.TYPE);
method.setAccessible(true);
return (boolean) method.invoke(sService, pkg, uid);
} catch (Exception e) {
return true;
}
}
}
那么4.4以下的版本能否通过反射获取?答案是否定的!
我在stackoverflow上找到一个回答:
Android 4.1: How to check notifications are disabled for the application?
回答中说,在12年的IO大会上有人问了,项目负责人说不能!
还有一点就是,回答在16年被编辑,v4包中加入的
NotificationManagerCompat.from(this).areNotificationsEnabled();
可以判断是否开启通知栏权限。
亲测,使用support v4:28.0.0
使用此api可以全版本判断获取是否开启通知栏权限!
Intent localIntent = new Intent();
//直接跳转到应用通知设置的代码:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {//8.0及以上
localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
localIntent.setData(Uri.fromParts("package", getPackageName(), null));
} else if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {//5.0以上到8.0以下
localIntent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
localIntent.putExtra("app_package", getPackageName());
localIntent.putExtra("app_uid", getApplicationInfo().uid);
} else if (android.os.Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {//4.4
localIntent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
localIntent.addCategory(Intent.CATEGORY_DEFAULT);
localIntent.setData(Uri.parse("package:" + getPackageName()));
} else {
//4.4以下没有从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,
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", getPackageName(), null));
} else if (Build.VERSION.SDK_INT <= 8) {
localIntent.setAction(Intent.ACTION_VIEW);
localIntent.setClassName("com.android.settings", "com.android.setting.InstalledAppDetails");
localIntent.putExtra("com.android.settings.ApplicationPkgName", getPackageName());
}
}
startActivity(localIntent);
好了,完结!
参考文章:
https://www.jianshu.com/p/2d0a9d5559fc
https://www.jianshu.com/p/757476ca3d67
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