Develop Reference

how to convert byte string to pdf to display it in Web view in Android Studio?

I am calling a json API from which I am getting a pdf element , it looks like this , this file is only for example as it is corrupted but looks like this :
JVBERi0xLjUNCiW1tbW1DQoxIDAgb2JqDQo8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFIvTGFuZyhlbi1VUykgL1N0cnVjdFRyZWVSbDQTRGRTNBQ0MxQTg5PjwxOTIzMDRGMTgwOTZCMzQ0QjExQ0E0RkUzQUNDMUE4OT5dIC9QcmV2IDk3NjgwL1hSZWZTdG0gOTY0MTg+Pg0Kc3RhcnR4cmVmDQoxMDgzNzgNCiUlRU9G
I want to convert it into pdf to display it into web view in my application.
My tried Code:
String fileUrl = response.getPdf();
byte[] bytes = null;
try {
bytes = fileUrl.getBytes("UTF-8");
Log.e("Byte Array",bytes.toString());
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
It Converts into [B#a4d4cef. After this i am not understanding what to do.
Any help would be appreciated.
Thanks.

android separating a text file

I've been researching about how diablo 2 dynamically generates loot, and I thought it'd be fun to create a fun app that will randomly generate items using this system.
I currently have code which I believe should read the entire txt file, but it's not parsed.
It looks like:
private void itemGenerator() {
int ch;
StringBuffer strContent = new StringBuffer("");
InputStream fs = getResources().openRawResource(R.raw.treasureclass);
// read file until end and put into strContent
try {
while((ch = fs.read()) != -1){
strContent.append((char)ch);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
An example in the text file would look something like:
Treasure Class Item1 Item2 Item3
tc:armo3 Quilted_Armor Buckler Leather_Armor
tc:armo60a Embossed_Plate Sun_Spirit Fury_Visor
tc:armo60b Sacred_Rondache Mage_Plate Diadem
So what I'm thinking right now is putting each row into an array with StringTokenizer delimited by \n to get each row. Then somehow do it again with tab-delimited for each item in the array and put it into a 2D array?
I haven't coded it yet because I think there's a better way to implement this that I haven't been able to find, and was hoping for some helpful input on the matter.
For anyone actually interested in knowing how the item generation works, their wiki page, http://diablo2.diablowiki.net/Item_Generation_Tutorial, goes very in-depth!

I think you are facing problem in distinguishing between each lines that are read-out from file. In order to read the file line-by-line you should change your code as below:
InputStream fs = getResources().openRawResource(R.raw.treasureclass);
BufferedReader br = new BufferedReader(new InputStreamReader(fs));
String line = null;
while((line = br.readLine()) != null){
Log.i("line", line);
//split the content of 'line' and save them in your desired way
}

Open raw text recourse and diplay wrong next line

InputStream inputStream = getResources().openRawResource(idtext);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
String myText = "";
int in;
try {
in = inputStream.read();
while (in != -1) {
byteArrayOutputStream.write(in);
in = inputStream.read();
}
inputStream.close();
myText = byteArrayOutputStream.toString();
} catch (IOException e) {
e.printStackTrace();
}
myTextView.setText(myText); `
My code is used to display long text file in raw res. I don't know why, but some of text file display wrong about next line, any help?

It would be good if you can share some sample display vs your expected output.
From the initial guess, it could be because of couple of reasons:
The encoding used in the text file. So, if you have written the text in ASCII and displaying it while using UTF-8 strings, it would mess up few things. This should be consistent.
Could be a good case of how line feeds are encoding in the file, like \r\n or just \n.
You can also try encapsulating your InputStream to FileReader and line reading streams which are more specialized in directly reading strings, rather than converting it.
You can probably use a library like Apache Commons IO to manage all the stuffs for you.

URL Decoder not working

I am trying to decode a name string which contains apostrophe. This name string is being parsed in an XML parser, so what I want to do is that the apostrophe should be displayed normally, rather than being displayed as '. I tried using the URLDecoder.decode(myString, "UTF-*"); to decode it but to no avail. From one solution posted on StackOverflow I found that we need to use the URLDecoder.decode() twice. However, even that is not working. The code that I am using is:
try {
temp = URLDecoder.decode("Wing's", "UTF-8");
nameOrg = URLDecoder.decode(temp, "UTF-8");
}
catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
At the end it should display Wing's as Wing's, but it is displaying the same string. Any help would be great. Thanks in advance.

Why don't you just decode it using Html.fromHtml(String source),
Spanned temp = Html.fromHtml("Wing's");
Log.d("decoded", temp.toString());
Output - Wing's

Android: How to read a txt file which contains Chinese characters?

i have a txt file which contains many chinese characters, and the txt file is in the directory res/raw/test.txt. I want to read the file but somehow i can't make the chinese characters display correctly. Here is my code:
try {
InputStream inputstream = getResources().openRawResource(R.raw.test);
BufferedReader bReader = new BufferedReader(
new InputStreamReader(inputstream,Charset.forName("UTF-8")));
String line = null;
while ((line= bReader.readLine())!= null) {
Log.i("lolo", line);
System.out.println("here is some chinese character 这是一些中文字");
}
} catch (IOException e) {
e.printStackTrace();
}
Both Log.i("lolo", line); and System.out.println("here is some chinese character 这是一些中文字") don't show characters correctly, i can not even see the chinese characters in the println() method.
What can i do to fix this problem? Can anybody help me?

In order to correctly handle non-ASCII characters such as UTF-8 multi-byte characters, it's important to understand how these characters are encoded and displayed.
Your console (output screen) may not support the display of non-ASCII characters. If that's the case, your UTF-8 characters will be displayed as garbage. Sometimes, you will be able to change the character encoding on the console. Sometimes not.
Even if the console correctly displayed UTF-8 characters, it's possible that your string does not correctly store the Chinese characters. You may think that it's correct because your editor displays them, but ensure that the character encoding of your editor also supports UTF-8.

I also was trying to figure out that. First you need to open the .txt file with the notepad and then click on File->Save as, there you will see a dropdown menu that says Enconding, so change it to UTF-8. After saving the file you should remove the .txt extension to the file and then add the file to the path res/raw and then you can refer to it from the code as R.raw.txtFileName.
That's all, i will put my code where I used the chinese characters and I could show them in the emulator.
If you have any other question, let me know because i am also developing something related with characters. Here is the code:
public List<String> getWords() {
List<String> contents = new ArrayList<String>();
try {
InputStream inputStream = getResources().openRawResource(R.raw.chardb);
BufferedReader input = new BufferedReader(new InputStreamReader(inputStream,Charset.forName("UTF-8")));
try {
String line = null;
while (( line = input.readLine()) != null){
contents.add(line);
}
}
finally {
input.close();
}
}
catch (IOException ex){
ex.printStackTrace();
}
return contents;
}