I seen this link: https://azure.microsoft.com/en-us/documentation/articles/storage-java-how-to-use-table-storage/
but i have problem with connection string when run app with android.
This is my connection:
public static final String storageConnectionString = "DefaultEndpointsProtocol=http;"
+ "AccountName=demoeeg;"
+ "AccountKey=aDJtpWT2/UjBjrwt3BprpujNLNueTl5CjHkik6X6ELdLjGCU5jbnwXz8YCHnQs6wVO6YvY5sGUc7xWon/Iv3ug==";
and in other class I set:
private static final String USE_DEVELOPMENT_STORAGE_NAME = "UseDevelopmentStorage";
Where is my error?
Don't set use development storage. This means use the storage emulator -- and that's not going to work with Android. I'd recommend checking out the samples in the azure-storage-android repo which will give you some ideas on how to configure your application. Then, you can pull any code snippets you'd like from the how-to which will also give you more conceptual information.
Related
I'm building an app with the Entity Framework on Xamarin that lets me compare some data. But when I start my "fetchdata" function, I receive the Error:
System.Data.SqlClient.SqlException (0x80131904): Snix_Connect (provider: SNI_PN7, error: 35 - SNI_ERROR_35)Snix_Connect (provider: SNI_PN7, error: 35 - SNI_ERROR_35)
I see many posts about Xamarin / Android & that it is not possible to get a connection to a SQL Server. Is there any way to fetch data from a SQL Server with .NET Core on Xamarin?
This is the string I put into SQL_Class folder with Sql_Common.cs
Fill up the brace brackets with actual parameters (removing the brace brakets too).
public static string SQL_connection_string = #"data source={server_address};initial catalog={database_name};user id={user_id};password={password};Connect Timeout={seconds}";
Then I access whenever I need it from any xamarin code just like we use in our asp.net c#
This works for me on my app without any issues.
using (SqlConnection Sql_Connection = new SqlConnection(Sql_Common.saralEHR_connection_string))
But as #Jason mentioned in his first reply, I too would get once again check the security part. I fexperienced before publishing Package to Google Play, they encrypt the App files with Hash Key Code and then only it gets upload to server
Yes it is possible (HuurrAYY!):
Im new in .net core, c# and so on and for me it was a hell of a work to get it working..
So here for the other noobs who are seeking for Help:
Guide´s i used:
Building Android Apps with Entity Framework
https://medium.com/#yostane/data-persistence-in-xamarin-using-entity-framework-core-e3a58bdee9d1
https://blog.xamarin.com/building-android-apps-entity-framework/
Scaffolding
https://cmatskas.com/scaffolding-dbcontext-and-models-with-entityframework-core-2-0-and-the-cli/
How i did it:
Build your normal Xamarin app.
create new .net solution like in the tutorials (DONT WRITE YOUR Entity Framework CLASSES)
create a third solution what has to be a .net core console application
Scaffold your DB in your CONSOLE application move all created classes & folders in your "xamarin .net" solution & change the namespaces
Ready to Go!
Side Node: NuGets you need in every solution:
Microsoft.EntityFrameworkCore
Microsoft.EntityFrameworkCore.SqlServer
[EDIT: NuGets you need in every solution]
I am doing this way (working snippet):
string connectionString = #"data source={server};initial catalog={database};user id={user};password={password};Connect Timeout=10";
string databaseTable = "{table name}";
string selectQuery = String.Format("SELECT count(*) as Orders FROM {0}", databaseTable);
try
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
//open connection
connection.Open();
SqlCommand command = new SqlCommand(selectQuery, connection);
command.Connection = connection;
command.CommandText = selectQuery;
var result = command.ExecuteScalar().ToString();
//check if there is result
if(result != null)
{
OrdersLabel.Text = result;
}
}
}
catch (Exception ex)
{
OrdersLabel.Text = ex.Message;
}
It is working fine, but API call more elegant.
I hope it helps.
I am trying to connect to Alexa Voice Service from an Android app following the directions on this page: https://developer.amazon.com/public/solutions/alexa/alexa-voice-service/docs/authorizing-your-alexa-enabled-product-from-an-android-or-ios-mobile-app
Bundle options = new Bundle();
String scope_data = "{\"alexa:all\":{\"productID\":\"" + PRODUCT_ID +
"\", \"productInstanceAttributes\": {\"deviceSerialNumber\":\"" + PRODUCT_DSN + "\"}}}";
options.putString(AuthzConstants.BUNDLE_KEY.SCOPE_DATA.val, scope_data);
options.putBoolean(AuthzConstants.BUNDLE_KEY.GET_AUTH_CODE.val, true);
options.putString(AuthzConstants.BUNDLE_KEY.CODE_CHALLENGE.val, CODE_CHALLENGE);
options.putString(AuthzConstants.BUNDLE_KEY.CODE_CHALLENGE_METHOD.val, "S256");
mAuthManager.authorize(APP_SCOPES, options, new AuthorizeListener());
First, I don't know what APP_SCOPES should be. I set it to:
protected static final String[] APP_SCOPE = new String[]{"profile", "postal_code"};
but I get an error from the server
AuthError cat= INTERNAL type=ERROR_SERVER_REPSONSE - com.amazon.identity.auth.device.AuthError: Error=invalid_scope error_description=An unknown scope was requested
What am I doing wrong and how can I do this right?
The APP_SCOPE is : "alexa:all"
The PRODUCT_DSN can be anything you want, "1234" as per suggestion from Joshua Frank (https://forums.developer.amazon.com/forums/message.jspa?messageID=18973#18973)
The PRODUCT_ID is the ID in the AVS Developper Portal (https://developer.amazon.com/edw/home.html#/avs/list)
The CODE_CHALLENGE the Client Secret in the Security Profile of your application (should be already hashed in S256)
The problem is not with the APP_SCOPES variable, it is actually with the PRODUCT_ID, PRODUCT_DSN variables passed in the scope data.
I faced this exact same issue and have raised a query in amazon developers forum on what needs to be passed in those variables - Alexa authentication issue using beta SDK
Once the PRODUCT_ID, PRODUCT_DSN & CODE_CHALLENGE variables are determined then the authentication should be pretty much straight forward.
The APP_SCOPE should be "alexa:all"
I am using Log4j to log data in my android application. I have configured the log4j with the help of the following class, but the log files are not getting created.
console logging is enabled, maxfilesize and maxbackupsize are also good. please let me know what i am missing here.
public class ConfigureLog4J {
static LogConfigurator logConfigurator = new LogConfigurator();
private static final int maxFileSize = 1024 * 5; // 100KB
public static final int maxBackupSize = 2; // 2 backup files
public static final String LOG_FILE_NAME = "bitzer.log";
private static HashMap<Integer, Level> logLevelMap = new HashMap<Integer, Level>();
static {
logLevelMap.put(0, Level.OFF);
logLevelMap.put(1, Level.ERROR);
logLevelMap.put(2, Level.INFO);
logLevelMap.put(3, Level.WARN);
logLevelMap.put(4, Level.DEBUG);
logLevelMap.put(5, Level.ALL);
}
public static void startWithLogLevel(int logLevel) {
logConfigurator.setFileName(getLogFileName());
logConfigurator.setRootLevel(getLevelFromInt(logLevel));
logConfigurator.setUseFileAppender(true);
logConfigurator.setUseLogCatAppender(isConsoleLoggingEnabled());
logConfigurator.setMaxFileSize(getMaxFileSize());
logConfigurator.setMaxBackupSize(maxBackupSize);
// Set log level of a specific logger
// logConfigurator.setLevel("org.apache", Level.ERROR);
logConfigurator.setResetConfiguration(true);
logConfigurator.configure();
}
private static long getMaxFileSize() {
return CompanySettings.getInstance().getValueAsInteger(R.string.max_log_size);
}
private static boolean isConsoleLoggingEnabled() {
return CompanySettings.getInstance().getValueAsBoolean(R.string.consoleLoggingEnabled);
}
private static Level getLevelFromInt(int newLogLevel) {
return logLevelMap.get(newLogLevel);
}
public static String getLogsDirectory() {
if(AppData.getInstance().getContext()!=null)
{ String packageName = AppData.getInstance().getContext().getPackageName();
System.out.println("sundeep package name is not null and it's"+packageName);
return "data/data/" + packageName + "/logs/";
}
return null;
}
public static String getLogFileName() {
return getLogsDirectory() + LOG_FILE_NAME;
}
}
SLF4J Overview
I highly recommend you use SLF4J, which is log4j's "older brother" of sorts; the same developers who made log4j made SLF4J to address the shortcomings of log4j.
The difference is, whereas log4j is a full-fledged logging framework, SLF4J is a facade which you use directly in your Java code. The facade aspect allows you to plugin a concrete logging implementation — such as log4j, logback, Android's Log utility, etc. — at runtime.
It allows you to write code that can be used between different projects without having to go through your code and convert your logging statements to use the target project's logging framework. If you have several thousand lines of code which use log4j, but the target you're importing them into uses Apache Commons logging, you'll soon find yourself with a headache if you manually make the changes... even with the assistance of a capable IDE.
Using log4j in Android
There's a great Android library for logging to log4j — as well as many other logging frameworks as well — called android-logging-log4j. Check out the very excellent section on "Using log4j over slf4j", which is the route I take in my Android projects.
Examples from my own projects
Here are some examples from my own projects, such as my Awnry News & Weather app. (Yeah, shameless plug :P)
Required JARs on classpath
Basically these are the JARs I'll typically have in my project's classpath (version numbers vary as new releases come about, of course).
android-logging-log4j-1.0.3.jar
log4j-1.2.17.jar
slf4j-api-1.7.6.jar
slf4j-log4j12-1.7.6.jar
Instantiating a class's logger
And here's how I instantiate my general logger in each of my classes that require logging:
package com.awnry.android.naw;
...
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
...
public class NawApplication extends Application
{
private static final Logger log = LoggerFactory.getLogger(NawApplication.class);
As you can see, I'm only referencing SLF4J's Logger and LoggerFactory interfaces, even though the actual logging may eventually be accomplished using log4j or Android's Log.
That's the beauty of SLF4J's facade design: You aren't tied down to any specific logging implementation/framework; you can change your mind in the future without having to change a line of your code. If you're using log4j over SLF4J now, but in the future you want to use the Apache Commons Logging framework all you have to do is switch out the SLF4J-to-log4j bridge to a SLF4J-to-ACL bridge, and none of your Java code will be any wiser as it only calls SLF4J interfaces. The time-honored adage to code to an interface, not an implementation holds true once again, and SLF4J is a superb example of that.
Configuring the Android app's logging
In my Application.onCreate() method, I configure my logging like this:
#Override
public void onCreate()
{
...
String logFile = getFilesDir().getAbsolutePath() + File.separator + "logs" + File.separator + "debug.log";
log.info("Application log file: " + logFile);
LogConfigurator logConfigurator = new LogConfigurator(logFile, Level.TRACE);
logConfigurator.configure();
...
}
This part is actually optional, I believe. In my case I do this because I use the ACRA library to help catch unexpected program crashes and report the details back to me for debugging, so you might not need to define your android-logging-log4j's LogConfigurator as I do here.
Why you are using log4j.
There are efficient Log utility is available specially designed for android.
Use LogCat. Its very simple to use and standard way of putting log in your android app.
Is there anyone there who can tell me how i can send a string ("example") to an ipadress on a local network via wifi in as3 on air on adroid.
Thanks in advance!
FlashCreated
I'd imagine you can just use the HTTPService class or URLRequest (if you're not using Flex) the code would be something like this:
var urlRequest:URLRequest = new URLRequest("http://192.168.1.100/test.php");
var urlVariables:URLVariables = new URLVariables();
urlVariables.testVarName = "example";
urlRequest.data = urlVariables;
sendToUrl(urlRequest);
alternatively if you want to listen to the response use a URLLoader, if you're going with Flex HTTPService basically wraps up this functionality into a single class for that just create one set the url and call myHTTPService.send([optional params if not on data]);
Let me know if this doesn't work out and what errors you get or behavior, haven't actually tried yet within an Android device but if there's variance in the approach I'd like to know as well.
So php file is resident on the computer your sending the mesange to?
Im trying to access the certificate/signature from inside an android app, so that I can do something with the certificate.
I googled a bit and found the code below:
Class c = getClass();
ProtectionDomain pd = c.getProtectionDomain();
CodeSource cs = pd.getCodeSource();
Certificate[] signingCertificates = cs.getCertificates();
String st = signingCertificates[0].toString();
but c.getProtectionDomain() returns null.
anyone can help? many thanks.
Take a look at Android sources:
frameworks/base/core/java/android/content/pm/PakcageParser.java
frameworks/base/core/java/android/content/pm/Signature.java
You can perform the same on your app's own .apk.