SettingsActivity.java 文件源码

/**
 * Create the "Select Instruments For Each Track " lists.
 * The list of possible instruments is in MidiFile.java.
 */
private void createInstrumentPrefs(PreferenceScreen root) {
    PreferenceCategory selectInstrTitle = new PreferenceCategory(this);
    selectInstrTitle.setTitle(R.string.select_instruments_per_track);
    root.addPreference(selectInstrTitle);
    selectInstruments = new ListPreference[options.tracks.length];
    for (int i = 0; i < options.instruments.length; i++) {
        selectInstruments[i] = new ListPreference(this);
        selectInstruments[i].setOnPreferenceChangeListener(this);
        selectInstruments[i].setEntries(MidiFile.Instruments);
        selectInstruments[i].setEntryValues(MidiFile.Instruments);
        selectInstruments[i].setTitle("Track " + i);
        selectInstruments[i].setValueIndex(options.instruments[i]);
        selectInstruments[i].setSummary(selectInstruments[i].getEntry());
        root.addPreference(selectInstruments[i]);
    }
    setAllToPiano = new Preference(this);
    setAllToPiano.setTitle(R.string.set_all_to_piano);
    setAllToPiano.setOnPreferenceClickListener(this);
    root.addPreference(setAllToPiano);
}