Tag Archives: Fileinputstream

How to encrypt and decrypt an audio file in Android?

Here is a simple example to encrypt and decrypt a audio file in Android. We will directly go to the implementation part. Demo Video You can check the demo video here. Download Library You can download the simple library from here. Aim Download an audio file from internet. Encrypt and save the encrypted file in Disk, so that… Read More »

How to encrypt and decrypt a file using “AES” algorithm in Android? – Google’s Advice

This is a simple example showing how to encrypt and decrypt a file in android. what we will do in this post is 1. Generate a key for encrypting our data. 2. Create a file and save data using ENCRYPTION with our generated key to the SDCARD. 3. With the help of the key DECRYPT the File and… Read More »

How to copy a file to another saved in SDCARD in Android?

Hello all… This tutorial explains how to copy a file contents to another in Android. The file to copy is saved in SDCARD, however you can change the path to save it in your application sandbox. if you want to save it in your sandbox, change the path to /data/data/your_packagename/your_file.extension Now we will see the layout for the… Read More »

How to store an Image from Android to a SQlite and retrieve it?

Hello all… In today’s post I will show you how to store an image in an SQLite database and retrieve it. First I will just create a Database Helper Class for adding and reading from the Database. Our Database contains only one table “Images” with two columns “id” and “image”. Note : If you want to see the… Read More »

How to read and write files to SDCARD and application SandBox in Android – A complete example?

Here is a complete example of How to read and write files to SDCARD and application SandBox in Android. First create a new project and inside the mainActivity paste this code. Now create another class named MyFile.java and copy this code into it. Now the layout for the xml file. Note you should give this permission in the… Read More »

Serialization in Android – A Simple example.

Serializing a class file provides a fast and efficeint way to store information produced by your application! What is serialization? Serialization is essentually taking a screenshot of a class file and its contents. For example, lets say you have the following class: Now we will save this data to a file in the SDCARD. Make sure to add… Read More »

How to download a file from a remote site in android? – Another simple example – Method -3

Hello all ……. I have shown many examples on how to download and upload files in android through this site. These are other methods for downloadign a file in android. 1. How to Download an image in ANDROID programatically? 2. How to download a file to your android device from a remote server with a custom progressbar showing… Read More »

How to download a file to your android device from a remote server with a custom progressbar showing progress?

Actually this is really simple. I have already posted an example for how to download a file in this post. How to Download an image in ANDROID programatically? This is another one little different with a progressbar included. Previously I have shown three other methods to upload files to a server. Check these posts to refer this. 1.… Read More »

How to upload an image from Android device to server? – Method 4

Hello all…. This post is also about uploading an image to server from your android device. Previously I have shown three other methods to upload an image to a server. Check these posts to refer this. 1. Uploading audio, video or image files from Android to server 2. How to Upload Multiple files in one request along with… Read More »

Copying an image to another in ANDROID.

Here is a simple example to copy an image to another image file in ANDROID. In this example a button click will open the gallery and after that it will be copied to another image file. You have to check the File-explorer to find the file. This is the java code for doing it. here is the main.xml… Read More »

Uploading audio, video or image files from Android to server

Hello everyone, Check out the popular posts from Coderzheaven.com Uploading and Downloading of files – Popular and Useful posts from CoderzHeaven In one of the previous posts I have shown one method to upload an image in android. Here is another method to upload a media file like images,audio or video in android. Here is the main java… Read More »

How to Download an image in ANDROID programatically?

Hello everyone.. In one of my tutorials I have shown you how to upload an image in android.. In todays tutorial I will show you how to download an image into your phone programatically. I am just picking up an image url from google to show the download. Previously I have shown three other methods to upload files… Read More »

How to add files like images inside your emulator in ANDROID?

In many of our android applications we need images and other files to be inside your emulator, such as images in the gallery. But unlike iPhone we cannot simply drag and drop files inside the emulator., because iPhone’s is simply a simulator. It justs creates an envoronment for testing. But ANDROID mimics the real phone. So we need… Read More »