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Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

Download This sample on Google Play Store

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public static void executeMultipartPost(String url, String imgPath, String field1, String field2){
  try {
    HttpClient client = new DefaultHttpClient();
    HttpPost poster = new HttpPost(url);

    File image = new File(imgPath);  //get the actual file from the device
    MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);          
    entity.addPart("field1", new StringBody(field1));
    entity.addPart("field2", new StringBody(field2));
    entity.addPart("image", new FileBody(image));

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// formatting numbers

// => "1.2"
String.format("%s", new DecimalFormat("#.##").format(1.2))

// => "1.20"
String.format("%.2f", 1.2)