我的应用程序中有一个首选项页面。由于没有多项选择 ListPreference(API 级别 11 之后有一个),我想在首选项页面放置一个 ListView。但preferences.xml 不允许我插入线性布局。
这是我的preferences.xml:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory
android:title="Auto Refresh Settings">
<CheckBoxPreference
android:title="Auto Refresh"
android:defaultValue="false"
android:summary="Enable / Disable Auto Refresh"
android:key="checkboxPref" />
<ListPreference
android:title="Auto Refresh Frequency"
android:summary="Select the frequency of Auto Refresh"
android:key="listPref"
android:defaultValue="20"
android:entries="@array/listArray"
android:entryValues="@array/listValues" />
</PreferenceCategory>
</PreferenceScreen>
这是它的外观:
我想要什么:
:
最后是我的 Settings.java(首选项):
package com.sarkolata.coding;
import android.content.Context;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceChangeListener;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceManager;
import android.widget.Toast;
public class Settings extends PreferenceActivity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
final Preference ListPref = (Preference) findPreference("listPref");
final Preference CheckPref = (Preference) findPreference("checkboxPref");
if(PreferenceManager.getDefaultSharedPreferences(getBaseContext()).getBoolean("checkboxPref", false)) {
ListPref.setEnabled(false);
}
ListPref.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
public boolean onPreferenceChange(Preference preference, Object newValue) {
Main.update_tick = Integer.parseInt(newValue.toString()) * 1000;
return true;
}
});
CheckPref.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
public boolean onPreferenceChange(Preference preference, Object newValue) {
if(newValue.toString() == "true")
{
ListPref.setEnabled(false);
} else {
ListPref.setEnabled(true);
}
if(newValue.toString() == "true") {
Main.refreshAllServers(Main.context, Main.bcontext,"start");
} else {
Main.refreshAllServers(Main.context, Main.bcontext,"stop");
}
return true;
}
});
}
}