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How to access lottie files outside res folder programatically

I don't know this is a duplicate question or not, but i tried to search similar question according to this.
I want to access the file that located outside /res folder programatically.
I already know if we want to access /res folder, then we just call it's id like getString(), getDrawable() etc.
But in my case, I want to access anim_empty.json programatically. How to do that?

Try following method for accessing JSON data:
public static String loadJSONFromAsset(Context mContext, String fileName) {
String json;
try {
InputStream is = mContext.getAssets().open(fileName);
int size = is.available();
byte[] buffer = new byte[size];
is.read(buffer);
is.close();
json = new String(buffer, "UTF-8");
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
return json;
}
Modify the method according to your usage..

In the truth, i just wanted to call the Lottie animation files, i thought that i need to write script like the answer above but all i need is just these (Getting Started With Animations in Android Using Lottie — Kotlin and enter link description here):
lottieAnimationView = findViewById(R.id.empty_hstanim);
lottieAnimationView.setAnimation("anim_empty.json");
lottieAnimationView.playAnimation();
Thanks for the kind answer anyway!

How can I pass data to libcore on Android?

I was modifying the libcore on Andorid for debugging purpose.
It took a lot of time to build even for a variable change.
Is it possible to pass the data to libcore of android?
(so I can change the data in the running time).
I tried System.getProperty() but the data could not cross process.
I also tried SystemProperties.get() but it seems it can not be used in libcore (it could not find the package and symbol).
Does anyone know how to pass data to the libcore on Android?

Thanks Nativ.
JNI is doable but a little complicated for me.
Finally, I used a simple, easy but stupid way to do that.
I created a file and saved my parameter in this file, and get the data from libcore.
It is a stupid way but worked for me for debugging.
Now I don't need to rebuild libcore and It saved much for me.

You can use reflection on class android.os.SystemProperties to get System Properties at runtime.
Code example:
public static String getSystemProperty(String key) {
String value = "";
try {
Class clazz = Class.forName("android.os.SystemProperties");
if (clazz != null) {
Object object = clazz.newInstance();
value = (String) (clazz.getMethod("get", String.class).invoke(object, key));
} else {
System.err.println(TAG + ", getSystemProperty: Class is null.");
}
} catch (Exception e) {
e.printStackTrace();
}
return value;
}

Android service file observer strange behavior

I need to implement a service in android that must be able to monitor a folder to detect a certain file and read what it contains. I'm having a strange behavior with my code and I can't find the reason. This is my relevant code.
public void onCreate(){
lectorFichCSV = new LectorFichCSV(); //object to read CSV files
ftpFileObserver = new FileObserver(filePath.getAbsolutePath()){
public void onEvent(int event, String file) {
if((FileObserver.CREATE & event) != 0){
Log.i("INFO: ", filePath.getAbsolutePath() + "/" + file + " is created");
if(file.substring(0,3).equals("RVE")){ //If file is created and the one I expect
try{
Log.i("INFO: ", "We have a RVE answer");
is = new FileInputStream(filePath + "/" + file);
lineaVent = lectorFichCSV.parseCSVFileAsList(is); //Get information in a list
//Get dao from ORMLite
dao = getHelper().getLineaVentDao();
Iterator<String[]> iterator = lineaVent.iterator();
if(iterator.hasNext()){
String[] aux = iterator.next();
Log.i("INFO:", "CodLineaVent "+aux[0]);
if(aux[2].equals("S")){
//Update DB information accordin to my file
UpdateBuilder<LineaVent, Integer> updateBuilder = dao.updateBuilder();
updateBuilder.where().eq("_id", aux[0]);
updateBuilder.updateColumnValue("valido", true);
updateBuilder.updateColumnValue("saldo", true);
updateBuilder.update();
lineaVent.clear();
}else if(aux[2].equals("N")){
UpdateBuilder<LineaVent, Integer> updateBuilder = dao.updateBuilder();
updateBuilder.where().eq("_id", aux[0]);
updateBuilder.updateColumnValue("saldo", false);
updateBuilder.update();
lineaVent.clear();
}
File fileToDel = new File(filePath + "/" + file);
fileToDel.delete();
}
}catch(FileNotFoundException e){
e.printStackTrace();
}catch(SQLException e){
e.printStackTrace();
}
}
I debugged the code and sometimes is working and sometimes I get lineaVent.size() == 0. I'm going crazy with this, I'm thinking, is it possible that events occurs faster than the creation of my file? that would be the reason when I tried to parse my CSV file into my List object is size = 0? In that case I'm not getting any FileNotFoundException.
Any help will be appreciate. Thank you.

I am not an expert with the inotify POSIX API that, IIRC, underlies FileObserver. However, given that there are separate events for CREATE, MODIFY, and CLOSE_WRITE, it stands to reason that the CREATE event is solely for file creation -- in other words, allocating a new entry in the filesystem for the file. That would either create an empty file, or perhaps a file with some initial load of bytes, but where other MODIFY calls might be needed to write out the full contents. CLOSE_WRITE would then be called to indicate that whoever was writing to the file has now closed their file handle.
Hence, if you are watching for some file to be created, to read it in, watch for CREATE, then watch for CLOSE_WRITE on that same file, and then try to read it, and see if that works better.

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
}

how to modify my custom properties file in android

i am using a properties file to get the url of various webservices i am calling from my android. I want to provide a congiguration option so that ip address for web service can be modified.
how to proceed ?
i have a resource folder in src folder which have the following values
update=http://10.52.165.226:50000/android/rest/get/updateSfc
ShopOrder=http://10.52.165.226:50000/android/rest/getShopOrder/bySite?site=
i am using resource bundle to use this values in android.?
I am thinking of reading the file and replace all occrence of Ip address. how to rad the properties file and edit it in android

Here is a complete solution for you to use .properties file in your project.
1 Create a file named app.properties in assets folder of your android project
2 edit the file and write with in properties that you want to use for example as
test=success
And Save file
3 Write this Method with in your Activity Class
private Properties loadPropties() throws IOException {
String[] fileList = { "app.properties" };
Properties prop = new Properties();
for (int i = fileList.length - 1; i >= 0; i--) {
String file = fileList[i];
try {
InputStream fileStream = getAssets().open(file);
prop.load(fileStream);
fileStream.close();
} catch (FileNotFoundException e) {
Log.d(TAG, "Ignoring missing property file " + file);
}
}
return prop;
}
4 With in OnCreate Method write some thing like this
Properties prop = null;
try {
prop = loadPropties();
} catch (IOException e) {
Log.e(TAG, "Exception", e);
}
Toast.makeText(getApplicationContext(), "Result " + prop.getProperty("test"),
Toast.LENGTH_LONG).show();
5 add necessary imports
Hope this helps :)

Read about Data Storage in Android and more specifically Shared Preferences. For more complete usage of saving user preferences, read about the PreferenceActivity.
A tutorial on using Shared Preferences can be found here

Resources, Assets and other files/folders that form the part of Apk cannot be modified.You can use a database for depending on nos of rows that you will use