Problemas al Ejecutar una aplicación Android - Unauthorized Device

Problemas al Ejecutar una aplicación Android - Unauthorized Device

  mayo 05, 2019    martosfre

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Estimad@s amig@s

En el caso de que al querer ejecutar una aplicación Android en un dispositivo real no sea reconocido el dispositivo se tiene que realizar lo siguiente:

1.-  Conectar el cable del Usb al dispositivo y dirigirse en la computadora al directorio platform-tools dentro del SDK de Android y ejecutar el comando adb devices para verificar el estado del dispositivo. 

 

 

2.-  Como el dispositivo no esté autorizado se tiene que desconectar el cable USB del dispositivo, diriguirse al teléfono a la pantalla de Opciones de Desarrollador y proceder a revocar los permisos de depuración como se muestra a continuación.

 

 

3.- Diriguirse al directorio platform-tools dentro del SDK de Android y ejecutar el comando adb kill-server y adb start-server para reiniciar el ADB Server como se muestra a continuación.

 

 

4.- Conectar nuevamente el cable USB al dispositivo, diriguirse a la computadora,  proceder a ejecutar nuevamente el comando adb devices y aceptar la huella de seguridad que aparece en el dispositivo como se muestra a continuación.

 

 

5. Finalmente ejecutar el proyecto Android seleccionando la opción Run -> Run app, a lo que se desplegará la lista de AVD's que se tiene configurado así como los dispositivos que se tienen conectado al equipo y estén autorizados para ejecutar la aplicación como se muestra a continuación.

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Encoding JSP

Encoding JSP

  enero 02, 2019    martosfre

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Hello friends, in this opportunity I will show how to change the JSP encoding. For this we need the following:

1. Select the option Windows --> Preferences o Eclipse --> Preferences depending windows or mac respectively.

2. Change the Encoding, apply and close.

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Install Docker on Centos 7

Install Docker on Centos 7

  noviembre 26, 2018    martosfre

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Hello friends, in this opportunity I am going to review how to install the Docker on Centos 7. For this we need to do the following:

1.- First, we need to install the followings dependencies: yum-utils, device-mapper-persistent-data and lvm2. In my case I have installed.

2. Next we need to add the docker repository.

3.- Then, we need to install docker using the yum install docker-ce command.

During the installation process, we need to accepted  the information key.

4.- Finally, when the installation has finished. We need start up the docker service executing the systemctl start docker command and verify it through the docker run hello-world command.

 

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Install NodeJS on Centos 7

Install NodeJS on Centos 7

  noviembre 05, 2018    martosfre

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Hello friends, in this post I am going to show how to install NodeJS on Centos 7. For do this, we need to do the following.

1.- First go to the Node download page and download it.

2.- Next uncompress the package on directory you like.

3.- Then, configures the NODE_HOME environment variable. In my case I will configure on the root account in the /etc/profile file. For this we need to log as like root user.

4. After that, you must to update the environment variables executing the source /etc/profile command in both root and user account o also we can reboot the machine.

5.- Finally, we need to test the node version with the node -v command.

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Install GIT on Centos 7

Install GIT on Centos 7

  octubre 30, 2018    martosfre

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Hello friends, in this post I'm going to show how to install GIT on Linux, specifically Centos 7. For this we need to do the following

1.- Firts go to the GIT page and download it. 

2.- In the Centos case, we need to install git using the yum install git command. Don't forget execute the command as root user.

3.- Once installed, we need to configure the user and email address. This information is known like as Identity Information. It will be used in every commit. For this we need to execute the following commands.

4.- After that to check the configuration. We need to execute the git config --list command.

 5.- Finally as optional, we could add the git.exe to PATH.

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Install OpenJDK on MAC Computer

Install OpenJDK on MAC Computer

  octubre 24, 2018    martosfre

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Hello friends, in this post I'm going to show how install the OpenJDK on Mac computer using Homebrew Package Manager . This way is very simple, for this we need to do the following:

1.- First install homebrew package manager, the indications how to do this is here.

2.- Next open a console o terminal and execute the brew tap homebrew/cask-versions command to update versions.

3.- Next execute the brew cask install adoptopenjdk8 command to install the openJDK.

4.- After that we must configure the JAVA_HOME environment variable in the .bash_profile file with the value  /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/ and export it.

 

Don't forget re-open the terminal to update the .bash_profile file.

5.- Finally verify the java version with the java -version command.

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Change Password Postgres.app on Mac

Change Password Postgres.app on Mac

  octubre 19, 2018    martosfre

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Before I show us how to change the password on Postgres is important say us that I used the Postgres.app  program to install Postgres on Mac. It is a tool  that let us manages the database from easy way. However the default installation doesn't include password.

To change the password  we must do the following steps:

1. Go to the /Applications/Postgres.app/Contents/Versions/10/bin directory and execute the ./psql --u postgres command.
2. Next we need to change the password throught the \password command. We need to enter the password twice times.
3. Next quit the postgres console.

4. After that we need to change the autentication method of trust to md5 in the pg_hba.conf  file  located in /Users//Library/Application Support/Postgres/var-10/pg_hba.conf, where is the username of computer.

       5. Finally we need to restart the Postgres.app, for this we must stop the database and start again.

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