Android screen brightness adjustment

Package com. sensor. Demo;

/*** From http://apps.hi.baidu.com/share/detail/53623456 */import android. app. activity; import android. content. contentresolver; import android.net. uri; import android. provider. settings; import android. provider. settings. settingnotfoundexception; import android. util. log; import android. view. windowmanager; public class brightnesstools {/* the screen brightness of Android seems to have provided the automatic adjustment function at 2.1 +. * therefore, if the automatic adjustment function is enabled, there seems to be nothing to adjust. Yes. * This makes me speechless. The result is only a judgment to see if the automatic brightness adjustment function is enabled. * // *** Determines whether automatic brightness adjustment is enabled */public static Boolean isautobrightness (contentresolver acontentresolver) {Boolean automicbrightness = false; try {automicbrightness = settings. system. getint (acontentresolver, settings. system. screen_brightness_mode) = settings. system. screen_brightness_mode_automatic;} catch (settingnotfoundexception e) {e. printstacktrace ();} return automicbrightness;} // The brightness of the current image. Tangled:/*** get screen brightness */public static int getscreenbrightness (activity) {int nowbrightnessvalue = 0; contentresolver resolver = activity. getcontentresolver (); try {nowbrightnessvalue = android. provider. settings. system. getint (Resolver, settings. system. screen_brightness);} catch (exception e) {e. printstacktrace ();} return nowbrightnessvalue;} // how can I modify the screen brightness? /*** Set brightness */public static void setbrightness (activity, int brightness) {// settings. system. putint (activity. getcontentresolver (), // settings. system. screen_brightness_mode, // settings. system. screen_brightness_mode_manual); windowmanager. layoutparams Lp = activity. getwindow (). getattributes (); LP. screenbrightness = float. valueof (brightness) * (1f/255f); log. D ("lxy", "set LP. screenbrightn ESS = "+ LP. screenbrightness); activity. getwindow (). setattributes (LP) ;}// you can set it, but why is it still displayed? If it is set, it does not reflect it? // Hey, that's because the automatic adjustment function is enabled. How can I disable it? This is the most important thing:/*** stop automatic brightness adjustment */public static void stopautobrightness (activity) {settings. system. putint (activity. getcontentresolver (), settings. system. screen_brightness_mode, settings. system. screen_brightness_mode_manual);} // if it can be enabled, it should be able to close the handler. How can it be disabled? Very simple:/*** enable automatic brightness adjustment ** @ Param activity */public static void startautobrightness (activity) {settings. system. putint (activity. getcontentresolver (), settings. system. screen_brightness_mode, settings. system. screen_brightness_mode_automatic);} // at this point, it should be said that the operation brightness is almost all there, and it is over! // Ah, I thought it should be over, but the tragedy is that, since it is set as just now, it can only play a role in the current activity, we will find that there is no effect, and the tragedy is that we forgot to save it. Khan! /*** Save brightness setting status */public static void savebrightness (contentresolver resolver, int brightness) {URI uri = android. provider. settings. system. geturifor ("screen_brightness"); android. provider. settings. system. putint (Resolver, "screen_brightness", brightness); // resolver. registercontentobserver (Uri, true, mycontentobserver); resolver. policychange (Uri, null );}}

/*** From http://apps.hi.baidu.com/share/detail/53623456 */import android. app. activity; import android. content. contentresolver; import android.net. uri; import android. provider. settings; import android. provider. settings. settingnotfoundexception; import android. util. log; import android. view. windowmanager; public class brightnesstools {/* the screen brightness of Android seems to have provided the automatic adjustment function at 2.1 +. * therefore, if the automatic adjustment function is enabled, there seems to be nothing to adjust. Yes. * This makes me speechless. The result is only a judgment to see if the automatic brightness adjustment function is enabled. * // *** Determines whether automatic brightness adjustment is enabled */public static Boolean isautobrightness (contentresolver acontentresolver) {Boolean automicbrightness = false; try {automicbrightness = settings. system. getint (acontentresolver, settings. system. screen_brightness_mode) = settings. system. screen_brightness_mode_automatic;} catch (settingnotfoundexception e) {e. printstacktrace ();} return automicbrightness;} // The brightness of the current image. Tangled:/*** get screen brightness */public static int getscreenbrightness (activity) {int nowbrightnessvalue = 0; contentresolver resolver = activity. getcontentresolver (); try {nowbrightnessvalue = android. provider. settings. system. getint (Resolver, settings. system. screen_brightness);} catch (exception e) {e. printstacktrace ();} return nowbrightnessvalue;} // how can I modify the screen brightness? /*** Set brightness */public static void setbrightness (activity, int brightness) {// settings. system. putint (activity. getcontentresolver (), // settings. system. screen_brightness_mode, // settings. system. screen_brightness_mode_manual); windowmanager. layoutparams Lp = activity. getwindow (). getattributes (); LP. screenbrightness = float. valueof (brightness) * (1f/255f); log. D ("lxy", "set LP. screenbrightn ESS = "+ LP. screenbrightness); activity. getwindow (). setattributes (LP) ;}// you can set it, but why is it still displayed? If it is set, it does not reflect it? // Hey, that's because the automatic adjustment function is enabled. How can I disable it? This is the most important thing:/*** stop automatic brightness adjustment */public static void stopautobrightness (activity) {settings. system. putint (activity. getcontentresolver (), settings. system. screen_brightness_mode, settings. system. screen_brightness_mode_manual);} // if it can be enabled, it should be able to close the handler. How can it be disabled? Very simple:/*** enable automatic brightness adjustment ** @ Param activity */public static void startautobrightness (activity) {settings. system. putint (activity. getcontentresolver (), settings. system. screen_brightness_mode, settings. system. screen_brightness_mode_automatic);} // at this point, it should be said that the operation brightness is almost all there, and it is over! // Ah, I thought it should be over, but the tragedy is that, since it is set as just now, it can only play a role in the current activity, we will find that there is no effect, and the tragedy is that we forgot to save it. Khan! /*** Save brightness setting status */public static void savebrightness (contentresolver resolver, int brightness) {URI uri = android. provider. settings. system. geturifor ("screen_brightness"); android. provider. settings. system. putint (Resolver, "screen_brightness", brightness); // resolver. registercontentobserver (Uri, true, mycontentobserver); resolver. policychange (Uri, null );}}