android获取通知权限

支持API19以上

方法一：public boolean isNotificationEnable(Context context){

AppOpsManager mAppOps = (AppOpsManager) context.getSystemService(APP_OPS_SERVICE);
ApplicationInfo appInfo = context.getApplicationInfo();
String pkg = context.getApplicationContext().getPackageName();
int uid = appInfo.uid;

Class appOpsClass = null;
/* Context.APP_OPS_MANAGER */
try {
appOpsClass = Class.forName(AppOpsManager.class.getName());
Method checkOpNoThrowMethod = appOpsClass.getMethod("checkOpNoThrow", 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 (ClassNotFoundException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return false;

}

方法二：op为11

public int checkOp(Context context, int op) {
final int version = Build.VERSION.SDK_INT;
if (version >= 19) {
Object object = context.getSystemService("appops");
Class c = object.getClass();
try {
Class[] cArg = new Class[3];
cArg[0] = int.class;
cArg[1] = int.class;
cArg[2] = String.class;
Method lMethod = c.getDeclaredMethod("checkOp", cArg);
return (Integer) lMethod.invoke(object, op,
Binder.getCallingUid(), context.getPackageName());
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
return -1;
}

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