Java PreferenceGroup.getPreferenceCount方法代码示例

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
protected PreferenceGroup getPreferenceParent(PreferenceGroup prefGroup, Preference pref) {
    for (int i = 0; i < prefGroup.getPreferenceCount(); ++i) {
        Preference prefChild = prefGroup.getPreference(i);
        if (prefChild == pref) {
            return prefGroup;
        }
        if (prefChild instanceof PreferenceGroup) {
            PreferenceGroup childGroup = (PreferenceGroup) prefChild;
            PreferenceGroup result = getPreferenceParent(childGroup, pref);
            if (result != null) {
                return result;
            }
        }
    }
    return null;
}
 

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
private void tintPrefIconsRecursive(PreferenceGroup prefGroup, @ColorInt int iconColor) {
    if (prefGroup != null) {
        int prefCount = prefGroup.getPreferenceCount();
        for (int i = 0; i < prefCount; i++) {
            Preference pref = prefGroup.getPreference(i);
            if (pref != null) {
                pref.setIcon(_cu.tintDrawable(pref.getIcon(), iconColor));
                if (pref instanceof PreferenceGroup) {
                    tintPrefIconsRecursive((PreferenceGroup) pref, iconColor);
                }
            }
        }
    }
}
 

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
private void initSummary(Preference preference) {
    if (preference instanceof PreferenceGroup) {
        PreferenceGroup preferenceGroup = (PreferenceGroup) preference;

        for (int i = 0; i < preferenceGroup.getPreferenceCount(); i++) {
            initSummary(preferenceGroup.getPreference(i));
        }
    }
    else {
        updatePreferenceSummary(preference);
    }
}
 

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
private void initPrefsInfos(Preference pref) {
    if (pref instanceof PreferenceGroup) {
        PreferenceGroup prefGroup = (PreferenceGroup) pref;
        final int currentPreferenceCount = prefGroup.getPreferenceCount();
        for (int i = 0; i < currentPreferenceCount; i++) {
            initPrefsInfos(prefGroup.getPreference(i));
        }
    } else {
        initClickedListenerIfNeeded(pref);
        initFilterIfNeeded(pref);
        updatePrefDefaultValue(pref);
        updatePrefSummary(pref);
    }
}
 

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
/**
 * Traverses a {@code PreferenceGroup} to notify all eligible preferences about the results
 * of a returning activity.
 *
 * @param group       The {@code PreferenceGroup} to traverse.
 * @param requestCode The integer request code originally supplied to startActivityForResult(), allowing you to identify who this result came from.
 * @param resultCode  The integer result code returned by the child activity through its setResult().
 * @param data        An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
 */
protected void onActivityResult(PreferenceGroup group, int requestCode, int resultCode, Intent data) {
    final int n = group.getPreferenceCount();

    for (int i = 0; i < n; i++) {
        Preference pref = group.getPreference(i);
        if (pref instanceof PreferenceActivityResultListener) {
            ((PreferenceActivityResultListener) pref).onActivityResult(requestCode, resultCode, data);
        }

        if (pref instanceof PreferenceGroup) {
            onActivityResult((PreferenceGroup) pref, requestCode, resultCode, data);
        }
    }
}
 

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
private void initSummary(Preference p) {
    if (p instanceof PreferenceGroup) {
        PreferenceGroup pGrp = (PreferenceGroup) p;
        for (int i = 0; i < pGrp.getPreferenceCount(); i++) {
            initSummary(pGrp.getPreference(i));
        }
    } else {
        updatePrefSummary(p);
    }
}
 

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
private void initSummary(Preference preference) {
    if (preference instanceof PreferenceGroup) {
        PreferenceGroup group = (PreferenceGroup) preference;
        for (int i = 0; i < group.getPreferenceCount(); i++) {
            initSummary(group.getPreference(i));
        }
    } else {
        updatePrefSummary(preference);
    }
}
 

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
private void initPreferenceScreen(PreferenceGroup screen, SharedPreferences sharedPreferences) {

        final int count = screen.getPreferenceCount();

        for (int i = 0; i < count; i++) {
            Preference preference = screen.getPreference(i);

            if (preference instanceof PreferenceGroup) {
                initPreferenceScreen((PreferenceGroup) preference, sharedPreferences);
            } else {
                handlePreferenceChange(preference, sharedPreferences, preference.getKey());
            }
        }
    }
 

import android.support.v7.preference.PreferenceGroup; //导入方法依赖的package包/类
private void setSummaries(PreferenceGroup screen) {
	for (int i = screen.getPreferenceCount(); i-- > 0; ) {
		setSummary(screen.getPreference(i));
	}
}