将 LibGDX 与 Android 首选项一起使用

问题描述

我正在尝试将 Andrioid 的首选项系统与 LibGDX 的首选项系统结合使用.他们都使用 SharedPreferences 作为后端，所以我认为他们应该能够一起工作，但是当我尝试在 LibGDX 的首选项中加载数据时，我没有得到任何数据.

I'm trying to use Andrioid's preferences system in conjunction with LibGDX's preferences system. They both use SharedPreferences as a backend, so I figure they should be able to work together, but when I try to load the data in LibGDX's preferences, I don't get any data back.

我的 Androidpreferences.xml 文件(我知道它很短，稍后会有更多内容:P):

My Android preferences.xml file (I know it's short, it'll have much more later :P):

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
    <EditTextPreference 
        android:key="framerate"
        android:title="Set Framerate"
        android:enabled="true"
        android:persistent="true"
        android:defaultValue="25" />
</PreferenceScreen>

这是我的 PreferenceActivity:

Here is my PreferenceActivity:

import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceFragment;

public class WallpaperSettings extends PreferenceActivity {

    @SuppressLint("NewApi")
    @SuppressWarnings("deprecation")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (Build.VERSION.SDK_INT < 11) {
            addPreferencesFromResource(R.xml.preferences);
        } else {
            getFragmentManager().beginTransaction().replace(android.R.id.content, new MyPreferenceFragment()).commit();
        }

    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class MyPreferenceFragment extends PreferenceFragment
    {
        @Override
        public void onCreate(final Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preferences);
        }
    }
}

当我从 com.badlogic.gdx.Game 的子类调用它时，我使用

When I call it from a subclass of com.badlogic.gdx.Game, I use

Preferences pref = Gdx.app.getPreferences("preferences");
pref.getInteger("framerate");

pref 内的键数为 0.

有人知道如何解决这个问题吗?

Anyone have a clue as to how this might be fixed?

推荐答案

感谢http://www.badlogicgames.com/forum/viewtopic.php?f=11&t=6365#p32981 我能够解决这个问题.

Thanks to http://www.badlogicgames.com/forum/viewtopic.php?f=11&t=6365#p32981 I was able to solve the problem.

请注意，该代码适用于 Android 2.x 和 3.0+.

Just a note, the code works for both Android 2.x and 3.0+.

import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceFragment;

public class WallpaperSettings extends PreferenceActivity {

    @SuppressLint("NewApi")
    @SuppressWarnings("deprecation")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (Build.VERSION.SDK_INT < 11) {
            addPreferencesFromResource(R.xml.preferences);
        } else {
            getFragmentManager().beginTransaction().replace(android.R.id.content, new MyPreferenceFragment()).commit();
        }

    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class MyPreferenceFragment extends PreferenceFragment
    {
        @Override
        public void onCreate(final Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preferences);
            getPreferenceManager().setSharedPreferencesName("preferences");
            getPreferenceManager().setSharedPreferencesMode(0);
        }
    }
}

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