如何使事情在preferences做被改变? [英] How to make things done on Preferences being changed?
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问题描述
我已经设置了preference屏幕在我的应用程序设置选项,但我完全糊涂了如何当用户选择或更改一个选项使所做的更改。
I've set up a Preference Screen as a settings option in my App, but I am totally confused about how to make the changes done when user selects or changes an Option.
这里是我的preferenceScreen的XML code:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
<PreferenceCategory android:title="Notifications">
<RingtonePreference
android:summary="Choose a Ringtone"
android:title="Notification Ringtone"
android:key="ringtonePref" />
<ListPreference
android:title="Notification Timer"
android:summary="Select when to Notify"
android:dialogTitle="Show Notification after every:"
android:positiveButtonText="OK"
android:negativeButtonText="Cancel"
android:entries="@array/entries"
android:entryValues="@array/entries"
android:key="listPrefs" />
<ListPreference
android:title="LED Color"
android:summary="Choose LED Color"
android:positiveButtonText="OK"
android:negativeButtonText="Cancel"
android:entries="@array/colors"
android:entryValues="@array/colors"
android:key="listPrefs2" />
<CheckBoxPreference
android:title="LED"
android:defaultValue="true"
android:summary="Flash LED or Not"
android:key="checkBoxPrefs2"/>
<CheckBoxPreference
android:title="Vibrate"
android:defaultValue="true"
android:summary="Vibrate on receiving Notification"
android:key="checkBoxPrefs3" />
</PreferenceCategory>
<PreferenceCategory android:title="Invite">
<Preference android:summary="Send invitation to more peoples so that\nthey can also Learn more and more Duas."/>
</PreferenceCategory>
<PreferenceCategory android:title="Version">
<Preference
android:key="versionPrefs"
android:summary="Version 1.0\nThank you for Downloading the App." />
</PreferenceCategory>
</PreferenceScreen>
这里是我Settings.class:
public class Settings extends PreferenceActivity implements OnPreferenceChangeListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.settings);
//setting the properties of Action Bar
ActionBar actionBar = getActionBar();
actionBar.setTitle(Html.fromHtml("<font color='#FFFFFF'><strong>Settings</strong></font>"));
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#33B5E5")));
actionBar.setDisplayHomeAsUpEnabled(true);
PreferenceManager.setDefaultValues(this, R.xml.settings, true);
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
// TODO Auto-generated method stub
return false;
}
}
的我不知道是什么code,我应该增加在preferenceChange让我的preferences实际上做的改变。的
请告诉我。
任何帮助将是非常 鸭preciated 的
Any help would be highly Appreciated.
感谢您的 precious时间
推荐答案
有关振动
CheckBoxPreference checkBoxPrefs3 = (CheckBoxPreference) findPreference("checkBoxPrefs3");
checkBoxPrefs3.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
@Override
public boolean onPreferenceChange(Preference preference, Object o) {
if ((Boolean) o) {
checkBoxPrefs3.setChecked(true);
// vibration for 800 milliseconds
((Vibrator)getSystemService(VIBRATOR_SERVICE)).vibrate(800);
// TODO vibrate
} else {
checkBoxPrefs3.setChecked(false);
}
return false;
}
});
必需的权限AndroidManifest.xml文件里面加:
<uses-permission android:name="android.permission.VIBRATE" />
如何申请您的应用程序?
SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean vibrate = sharedPrefs.getBoolean("checkBoxPrefs3", true);
Notification notification = new Notification(icon,
"message", when);
notification.defaults |= Notification.DEFAULT_SOUND;
if (vibrate) {
notification.defaults |= Notification.DEFAULT_VIBRATE;
}
notification.setLatestEventInfo(mContext,
"ticker",
"message", contentIntent);
notification.flags = Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(count, notification);
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