Police Scanner App | | ValueCoders Client Case Studies

Police Scanner App

Ever thought of an application for the mobile phone that would alert you with emergency broadcast streams in real time along with text message to warn you of the disaster that can occur in future. Here is an app that focuses on these as well as some other services such as ambulance dispatch, fire departments, highway patrol and many more. Our client was keen to develop an app for the Android platform that would enable users to know about the forthcoming disaster.

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Technologies/Concepts

  • Android OS (1.1 and above)
  • Cloudfront
  • JAVA
  • MYSQL 5
  • SQLite
  • XML

Key Challenges

An application/tool for the Android, which can locate police dispatch frequencies of various countries along with cities, counties, and channels, was something that one of our clients wanted to develop. Their objective was to help people (users of the app) stay informed about any major disaster (happened/forthcoming) by listening to emergency broadcast streams in real time. Their requirement revealed that they wanted the app to stream the media buffer of a radio channel over internet and play it with native media player. He also required that all users of the app would be automatically updated to the new list whenever there is a new entry to the database that contained the list of countries, cities or station. Their requirements were stringent and needed someone who can understand their vision and meet their expectations.

When they hired ValueCoders, we had to address to the following tasks:

  • An application/tool for the Android, which can locate police dispatch frequencies.
  • It should be able to catch from various countries along with cities and channels.
  • To stream the media buffer of a radio channel over internet and play it with native media player.

While developing, we faced various challenges including the following ones:

  • Streaming media buffer of radio channel over internet and then playing it with a native player.
  • Listening to the audio stream by the users while accessing various other applications.
  • Getting all the data about the frequencies from various cities.

Our mobile app developers at ValueCoders had overcome these challenges with their innovative ideas and technical expertise.

Our Solutions

There were were a few major parts in the project which was skillfully handled by the talented development team at ValueCoders. After the client offered the development work to ValueCoders Solution’s team, ValueCoders started work responsibly and carefully in order to avoid any unusual scenario for the client and also for us. The development team had brainstorming sessions to come up with the development plans. Finally, our team developed a plug-in for Android. The app built, could meet the objective of the client as it could stream the media buffer of a radio channel over internet and also played the media buffer with the native media player.

The media buffer streamed from internet was saved into a file created locally and then played with Media player (already available in Android). The app parsed the xml file which include the radio channel info like country, city, stream url, location and .pls file. A user interface was created to display available radio channels for a country or for a city with some other information also displayed.

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