"Android" system volume and screen brightness adjustment

Screen brightness adjustment

/** * Swipe to change brightness, do not require permission * * @param percent brightness percentage, value is 0.0----1.0 */private void Onbrightnessslide (float percent) {if (mbrightn        ESS < 0) {//mbrightness is the brightness of the current screen mbrightness = GetWindow (). GetAttributes (). screenbrightness;        if (mbrightness <= 0.00f) mbrightness = 0.50f;        if (Mbrightness < 0.01f) mbrightness = 0.01f;        Display Moperationbg.setimageresource (R.DRAWABLE.VIDEO_BRIGHTNESS_BG);    Mvolumebrightnesslayout.setvisibility (view.visible);    } windowmanager.layoutparams LPA = GetWindow (). GetAttributes ();    Lpa.screenbrightness = mbrightness + percent;    if (lpa.screenbrightness > 1.0f) lpa.screenbrightness = 1.0f;    else if (Lpa.screenbrightness < 0.01f) lpa.screenbrightness = 0.01f;    GetWindow (). SetAttributes (LPA);    Viewgroup.layoutparams LP = Moperationpercent.getlayoutparams (); This section is a lp.width = (int) (Findviewbyid (R.id.operation_full)) that changes the progress of the current brightness above the picture. Getlayoutparams (). Width * Lpa.screenbrightness); MOPERATIONPERCENT.SETLAYOUTPARAMS (LP);}

Volume adjustment

/** * Volume adjustment, do not need permission */public class Mainactivity extends Activity {private static final String TAG = "mainactivity";    Private Audiomanager Maudiomanager;    private int currentvolume;        @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);        Maudiomanager = (Audiomanager) getsystemservice (Audio_service);        Maximum volume int maxvolume = Maudiomanager. Getstreammaxvolume (Audiomanager.stream_music);        LOG.I (TAG, "Maximum Volume:" + Maxvolume);        Currentvolume = Maudiomanager. Getstreamvolume (Audiomanager.stream_music);    LOG.I (TAG, "Current Volume:" + Currentvolume); public void up (view view) {///volume increased//Audiomanager.stream_system Maudiomanager.adjuststreamvolu        Me (Audiomanager.stream_music, audiomanager.adjust_raise, audiomanager.fx_focus_navigation_up); Currentvolume = Maudiomanager.Getstreamvolume (Audiomanager.stream_music);    LOG.I (TAG, "Current Volume:" + Currentvolume);                public void-down (view view) {///volume decrease Maudiomanager.adjuststreamvolume (Audiomanager.stream_music,        Audiomanager.adjust_lower, AUDIOMANAGER.FX_FOCUS_NAVIGATION_UP);        Currentvolume = Maudiomanager. Getstreamvolume (Audiomanager.stream_music);    LOG.I (TAG, "Current Volume:" + Currentvolume); }}

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"Android" system volume and screen brightness adjustment