我想改变按钮在打开和关闭时的角色

Question

public static PreferenceScreen getInstance(
        PreferenceActivity preferenceActivity,
        IsExcludedCallback isExcludedCallback,
        OnExcludedListener onExcludedListener,
        @StringRes int preferenceTitleResId,
        final @StringRes int preferenceScreenTitleResId
) {
    List<AppPojo> appList = KissApplication.getApplication(preferenceActivity).getDataHandler().getApplications();
    IconsHandler iconsHandler = KissApplication.getApplication(preferenceActivity).getIconsHandler();

    AppPojo[] apps = appList.toArray(new AppPojo[0]);
    Arrays.sort(apps, new PojoComparator());

    final PreferenceScreen excludedAppsScreen = preferenceActivity.getPreferenceManager().createPreferenceScreen(preferenceActivity);
    excludedAppsScreen.setTitle(preferenceTitleResId);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        excludedAppsScreen.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
            @Override
            public boolean onPreferenceClick(Preference preference) {
                Toolbar toolbar = PreferenceScreenHelper.findToolbar(excludedAppsScreen);
                if(toolbar != null) {
                    toolbar.setTitle(preferenceScreenTitleResId);
                }
                return false;
            }
        });
    }

    for (AppPojo app : apps) {
        final ComponentName componentName = new ComponentName(app.packageName, app.activityName);

        final Drawable icon = iconsHandler.getDrawableIconForPackage(componentName, app.userHandle);

        final boolean showSummary = Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
                || preferenceActivity.getResources().getConfiguration().screenWidthDp > 420;

        SwitchPreference pref = createExcludeAppSwitch(preferenceActivity, icon, app.getName(),
                app.getComponentName(), isExcludedCallback.isExcluded(app), app, showSummary, onExcludedListener);

        excludedAppsScreen.addPreference(pref);
    }

    return excludedAppsScreen;
}

private static SwitchPreference createExcludeAppSwitch(
        @NonNull Context context,
        @NonNull Drawable icon,
        String appName,
        String mainActivityName,
        boolean isExcluded,
        final @NonNull AppPojo app,
        boolean showSummary,
        final OnExcludedListener onExcludedListener
) {
    final SwitchPreference switchPreference = new SwitchPreference(context);
    switchPreference.setIcon(icon);
    switchPreference.setTitle(appName);
    if (showSummary) {
        switchPreference.setSummary(mainActivityName);
    }
    switchPreference.setChecked(isExcluded);
    switchPreference.setOnPreferenceChangeListener(
            new Preference.OnPreferenceChangeListener() {
                @Override
                public boolean onPreferenceChange(Preference preference, Object newValue) {
                    boolean becameExcluded = newValue != null && (boolean) newValue;

                    if(becameExcluded) {
                        onExcludedListener.onExcluded(app);
                    } else {
                        onExcludedListener.onIncluded(app);
                    }

                    return true;
                }
            }
    );
    return switchPreference;
}

/**
 * Use {@link #getInstance}
 */
private ExcludePreferenceScreen() {}

public interface IsExcludedCallback {
    boolean isExcluded(final @NonNull AppPojo app);
}

public interface OnExcludedListener {
    void onExcluded(final @NonNull AppPojo app);
    void onIncluded(final @NonNull AppPojo app);

}

}

此代码是启动器的代码。此代码连接应用程序和开关，当开关打开时，连接到开关的应用程序对用户是不可见的。（作为参考，开关连接到所有应用程序。）我想改变这一点，以便在开关关闭时应用程序对用户是不可见的。帮助

提前谢谢你

Answer 1

@funky，你很有趣。y问题不清楚，如果你知道另一种提问方式来澄清，请展示你的专业知识并提供帮助，而不是发表评论。。。发表评论！如果你很无聊，那就去参加社交活动，玩得开心！

Answer 2

你是说你有两个应用程序A和B，SwitchPreferene按钮正在监听A，你想在点击按钮时启动应用程序B？