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I know that the songs artist,album etc can be displayed by using MediaStore.Audio class. But it displays the list of artists,albums etc. The problem is when I click an artist name(displayed as list in my activity), all the songs with that particular artist should be displayed.
How can I filter the songs based on meta data (album/artist etc). How to get metadata of that particular song ?
If you want to filter based on the artist that the user clicked, you need to requery the database.
Below is an example of such a query.
String query = MediaStore.Audio.Media.IS_MUSIC + " != 0 AND _display_name LIKE '%.mp3' AND artist LIKE " + artistStringHere;
Read through the mp3 and find the id3 and id3+. However, dealing with mp3 music usually indicates piracy.
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I am creating a Classified application, I am stuck at Post Activity, where the user needs to select the Category to post their products. Below is the rough sketch for Post Activity.
Firebase Database Structure :
How to let the user select the Category from the Category list and based on that Category the item/products needs to be saved under that Structure.
For example : If the user needs to post an Advertisement for Audi, he will select "Cars" from the spinner list and that info(image,price,name) should be saved under "Cars" structure in the Firebase Database. Any help would be appreciated, I need to know the logic behind this:
You can get spinner text like this.
Spinner spinner = (Spinner)findViewById(R.id.spinner);
String text = spinner.getSelectedItem().toString();
After you got selected text you can set DatabaseReference location.
databaseReference = FirebaseDatabase.getInstance().getReference().child("All Categories").child(text);
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In my application I want to display the song's name. Now it is showing the entire song path, like this
String song_name = /storage/Music/Lean on.mp3
but I want to display only the song's name, that means
String song_name = Lean on.mp3
Can any one help me with the regular expressions used for extracting the name of song from the file path?
You can use subString function with combination of LastInedexOf function.
please find below example
String path=":/storage/Music/Lean on.mp3";
String filename=path.substring(path.lastIndexOf("/")+1);
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i want my app to search a specific website(from an url) for a specific text and give me the 3 chars after that text or to search for a pattern with a placeholder and give me the first matching string. Is that possible? There is no need to display the website.
Once you download the page using something like HTTPUrlConnection, you can use a regex with your search term
Pattern p = Pattern.compile("specific text(\w\w\w)");
Matcher m = p.matcher(site_text);
boolean b = m.matches();
The three \w will be captured in a group for you to use if there's a match.
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I want to generate Search Suggestions that matches the input in the AutoCompleteTextView.
It will check for the matches for the first word I type then all the related words should be populated.
After I type next character then it will match combination of that word and populate the result .
I do not understand how to do pattern matches.
For example: Suppose, there are three country names.
INDIA, IRAQ, IRAN.
When I type I then I want get All Country names Starting with I to be displayed.
When I type IR then result should be IRAN,IRAQ. ETC.
Your requirement will be satisfied in AutoCompleteTextView itself.
Threshold is used to set from the length where auto complete show it's suggestion:
For ex:
String[] languages={"INDIA", "IRAQ","IRAN"};
AutoCompleteTextView text(AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,languages);
text.setAdapter(adapter);
text.setThreshold(1);
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I need to get data from http://schedule.sumdu.edu.ua/index/json?method=getTeachers, parse it and load into AutoCompleteTextview. Any suggestions?
You need to access the service URL using an AsyncTask<>, then later on get its response into a String object.
And, parse it, using JSONObject/Json Array present in android. You will get many examples for this.
Later on you can create a String array, load your data in it, and set it for auto complete for text view.
Here is an example for this.
String[] listTeachers; // initialize this with teachers JSON data
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
R.layout.layout_teacher_list, listTeachers);
tvTeacher.setAdapter(adapter);