Android应用程序中设置页面的实现
我是一名新开发人员,我正试图在Android中实现一个设置页面,但运气不太好 我正在使用CheckBoxPreference,当我选中/取消选中CheckBoxPreference时,我正在尝试更改一些SharedReferences 这是我的密码:Android应用程序中设置页面的实现,android,settings,checkboxpreference,Android,Settings,Checkboxpreference,我是一名新开发人员,我正试图在Android中实现一个设置页面,但运气不太好 我正在使用CheckBoxPreference,当我选中/取消选中CheckBoxPreference时,我正在尝试更改一些SharedReferences 这是我的密码: package com.entu.bocterapp; //imports public class Settings extends PreferenceActivity implements SharedPreferences.OnShar
package com.entu.bocterapp;
//imports
public class Settings extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
CheckBoxPreference pushNotificationSetting;
CheckBoxPreference locationSupportSetting;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.settings_design);
initializeActionBar();
}
public void initializeActionBar(){
ActionBar actionBar = getActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(0xff50aaf1));
getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getActionBar().setCustomView(R.layout.action_bar_center_image);
}
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
if (key.matches("PUSH_NOTIFICATION_PREFERENCE")) {
if (getPushNotificationsPreference().equals("true")) {
setPushNotificationsPreference("false");
} else {
if (getPushNotificationsPreference().equals("false")) {
setPushNotificationsPreference("true");
}
}
Toast.makeText(this, getPushNotificationsPreference(), Toast.LENGTH_SHORT).show();
}
if (key.matches("LOCATION_SUPPORT_PREFERENCE")) {
if (getLocationSupportPreference().equals("true")) {
setLocationSupportPreference("false");
} else {
if (getLocationSupportPreference().equals("false")) {
setLocationSupportPreference("true");
}
}
}
Toast.makeText(this, getLocationSupportPreference(), Toast.LENGTH_SHORT).show();
}
public void setPushNotificationsPreference(String value) {
SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString(getString(R.string.push_notification_preference), value);
editor.commit();
}
public String getPushNotificationsPreference() {
SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
return sharedPref.getString(getString(R.string.push_notification_preference), "true");
}
public void setLocationSupportPreference(String value) {
SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString(getString(R.string.location_support_preference), value);
editor.commit();
}
public String getLocationSupportPreference() {
SharedPreferences sharedPref = getPreferences(Context.MODE_PRIVATE);
return sharedPref.getString(getString(R.string.location_support_preference), "true");
}
}
以下是我的XML:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory
android:title="BocterApp Settings">
<CheckBoxPreference
android:key="PUSH_NOTIFICATION_PREFERENCE"
android:title="Push Notifications"
android:summary="Uncheck this if you don't want to receive push notifications for alerts in your area (2km radius)."
android:defaultValue="true"/>
<CheckBoxPreference
android:key="LOCATION_SUPPORT_PREFERENCE"
android:title="Location Support"
android:summary="Filters locations that are more than 15 km away. Uncheck this if you want to see all alerts."
android:defaultValue="true"/>
</PreferenceCategory>
</PreferenceScreen>
您能告诉我我做错了什么/如何正确实施吗?我想,您想更改
复选框首选项
摘要。您可以使用android:summaryOn
在其值为true
时设置摘要。并使用android:summaryOff
在其值为false
时设置摘要。看起来是这样的:
<CheckBoxPreference
android:key="LOCATION_SUPPORT_PREFERENCE"
android:title="Location Support"
android:summaryOn="Uncheck this if you don't want to receive push notifications for alerts in your area (2km radius)."
android:summaryOff="Filters locations that are more than 15 km away. Uncheck this if you want to see all alerts."
android:defaultValue="true" />
您的错误是什么?不是错误。根本不起作用。