SettingPreferenceFragment.java 文件源码

private void initPreferences() {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
        ((PreferenceGroup) findPreference(getString(R.string.pref_category_memory_resident))).removePreference(
                findPreference(getString(R.string.pref_memory_resident_white_list)));
    }

    Observable.create(new ObservableOnSubscribe<Integer>() {
        @Override
        public void subscribe(ObservableEmitter<Integer> e) throws Exception {
            e.onNext(mSettingRepository.getTargetStep());
        }
    }).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()).subscribe(new Consumer<Integer>() {
        @Override
        public void accept(Integer target) throws Exception {
            findPreference(getString(R.string.pref_target_step)).setSummary(String.format(Locale.getDefault(),
                                                                                          "每日运动目标：%d步",
                                                                                          target));
        }
    });
}