RetroArch/android/phoenix/res/xml/prefs.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    android:title="RetroArch Settings" >

    <PreferenceScreen android:title="Path Settings">
        <PreferenceCategory android:title="ROM paths">
            <Preference android:title="ROM directory"
                android:summary="Sets directory where ROM browser will first browse for ROM files.">
                <intent
                    android:targetClass="org.retroarch.browser.ROMDirActivity"
                    android:targetPackage="org.retroarch" />
            </Preference>
        </PreferenceCategory>
        
        <PreferenceCategory android:title="Save files">
            <CheckBoxPreference android:title="Enable custom directory"
                android:summary="Enables use of custom save file folder. (.srm) save files will be saved and loaded to configured directory. If not enabled, save files will reside in ROM folder."
                android:key="savefile_directory_enable"
                android:defaultValue="false"/>
            <Preference android:title="Savefile directory"
                android:summary="Sets directory where to save and load game save files.">
                <intent
                    android:targetClass="org.retroarch.browser.SRMDirActivity"
                    android:targetPackage="org.retroarch" />
            </Preference>            
        </PreferenceCategory>
        <PreferenceCategory android:title="Save states">
            <CheckBoxPreference android:title="Enable custom directory"
                android:summary="Enables use of custom save state folder. (.state) save states will be saved and loaded to configured directory. If not enabled, save states will reside in ROM folder."
                android:key="savestate_directory_enable"
                android:defaultValue="false"/>
            <Preference android:title="Save state directory"
                android:summary="Sets directory where to save and load game save states.">
                <intent
                    android:targetClass="org.retroarch.browser.StateDirActivity"
                    android:targetPackage="org.retroarch" />
            </Preference>            
        </PreferenceCategory>
    </PreferenceScreen>
    <PreferenceScreen android:title="System Settings" >
        <PreferenceCategory android:title="General" >
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="savestate_auto_save"
                android:summary="Automatically saves and restores game state."
                android:title="Auto save state" />
        </PreferenceCategory>
        <PreferenceCategory android:title="Rewinding" >
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="rewind_enable"
                android:summary="WARNING - very CPU intensive - will decrease ingame performance."
                android:title="Enable" />
        </PreferenceCategory>
    </PreferenceScreen>
    <PreferenceScreen android:title="Video Settings" >
        <PreferenceCategory android:title="General" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="video_vsync"
                android:summary="When set to enabled, prevents screen tearing."
                android:title="VSync" />
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="video_sync_refreshrate_to_screen"
                android:summary="Synchronize RetroArch's refresh rate to the screen's refresh rate (recommended - some screens have refresh rates below 59.95Hz and need this enabled to get good audio/video sync)."
                android:title="Sync refreshrate to screen" />
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="video_allow_rotate"
                android:summary="Will auto-rotate the screen for vertically oriented games."
                android:title="Auto-rotate" />

            <ListPreference
                android:entries="@array/aspect_ratios"
                android:entryValues="@array/aspect_values"
                android:key="video_aspect_ratio"
                android:summary="Aspect ratio to enforce."
                android:title="Aspect ratio" />
        </PreferenceCategory>
        <PreferenceCategory android:title="Shaders (1st pass)" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="video_smooth"
                android:summary="Applies Bilinear filtering, smooths out edges (settings still apply even if no shader is selected)."
                android:title="Bilinear filter" />
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="video_shader_enable"
                android:title="Enable" />

            <Preference
                android:summary="Sets GLES2 style XML shader."
                android:title="XML shader" >
                <intent
                    android:targetClass="org.retroarch.browser.ShaderActivity"
                    android:targetPackage="org.retroarch" />
            </Preference>
        </PreferenceCategory>
        <PreferenceCategory android:title="Shaders (Multi-pass)" >
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="video_render_to_texture"
                android:summary="Render first pass to texture (FBO). Stretch to screen with second shader."
                android:title="Render to texture" />
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="video_second_pass_shader_enable"
                android:summary="Enable custom shader for use after rendering to FBO."
                android:title="Enable shader #2" />

            <Preference
                android:summary="Sets shader to use for second pass."
                android:title="XML shader (2nd pass)" >
                <intent
                    android:targetClass="org.retroarch.browser.Shader2Activity"
                    android:targetPackage="org.retroarch" />
            </Preference>

            <ListPreference
                android:entries="@array/fbo_scales"
                android:entryValues="@array/fbo_scale_values"
                android:key="video_fbo_scale"
                android:summary="Scale to use when rendering to FBO."
                android:title="FBO scale" />
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="video_second_pass_smooth"
                android:summary="Use Bilinear filtering on FBO texture on second pass."
                android:title="Second pass Bilinear Filtering" />
        </PreferenceCategory>
        <PreferenceCategory android:title="Fonts">
            <CheckBoxPreference android:title="Enable on-screen fonts"
                android:summary="Enable rendering of on-screen fonts for messages."
                android:key="video_font_enable"
                android:defaultValue="true"/>
        </PreferenceCategory>
    </PreferenceScreen>
    <PreferenceScreen android:title="Audio Settings" >
        <PreferenceCategory android:title="Audio" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="audio_enable"
                android:title="Enable" />
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="audio_rate_control"
                android:summary="Enable dynamic rate control (recommended)."
                android:title="Dynamic Rate Control" />
        </PreferenceCategory>
    </PreferenceScreen>
    <PreferenceScreen android:title="Input Settings" >
        <PreferenceCategory android:title="Configuration Autodetect" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="input_autodetect_enable"
                android:summary="This will attempt to preconfigure various gamepads and/or IME apps that you connect."
                android:title="Enable" />
        </PreferenceCategory>
        <PreferenceCategory android:title="Debug input reporting" >
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="input_debug_enable"
                android:summary="This will report keycodes on-screen generated by your input device(s). Useful for debugging."
                android:title="Enable" />
        </PreferenceCategory>
        <PreferenceCategory android:title="Touchscreen Overlay" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="input_overlay_enable"
                android:title="Enable" />

            <Preference
                android:summary="Sets touchscreen overlay config."
                android:title="Input overlay" >
                <intent
                    android:targetClass="org.retroarch.browser.OverlayActivity"
                    android:targetPackage="org.retroarch" />
            </Preference>
        </PreferenceCategory>
    </PreferenceScreen>

</PreferenceScreen>