Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.content.Context;

import android.database.Cursor;
import android.media.RingtoneManager;
import android.net.Uri;

import android.support.annotation.NonNull;

import java.util.HashMap;
import java.util.Map;

public class Main {
    /**
     * Returns whether given ringtone uri is valid (will produce sound). Can be used to determine
     * validity of a ring tone uri which is retrieved from preferences.
     *
     * @param context {@link Context} used to access system data.
     * @param ringTone {@link Uri} for ring tone.
     *
     * @return true if there is a registered ring tone with given uri, false otherwise.
     */
    public static boolean isRingtoneValid(@NonNull Context context, @NonNull Uri ringTone) {
        Map<String, String> ringTones = getRingtones(context);
        return (ringTones.values().contains(ringTone.toString()));
    }

    /**
     * Returns a map of ring tones registered on system. Map key is ring tone name,
     * value is ring tone uri.
     *
     * @param context {@link Context} used to access system data.
     * @return Map of ring tones.
     */
    public static Map<String, String> getRingtones(@NonNull Context context, int type) {
        RingtoneManager manager = new RingtoneManager(context);
        manager.setType(type);
        Cursor cursor = manager.getCursor();

        Map<String, String> map = new HashMap<>();
        while (cursor.moveToNext()) {
            String notificationTitle = cursor.getString(RingtoneManager.TITLE_COLUMN_INDEX);
            String notificationUri = cursor.getString(RingtoneManager.URI_COLUMN_INDEX);

            map.put(notificationTitle, notificationUri);
        }

        return map;
    }

    public static Map<String, String> getRingtones(@NonNull Context context) {
        return getRingtones(context, RingtoneManager.TYPE_RINGTONE);
    }
}