111 lines
3.3 KiB
Plaintext
111 lines
3.3 KiB
Plaintext
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package com.novelbook.android.utils;
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import android.app.Activity;
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import android.content.ContentResolver;
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import android.net.Uri;
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import android.provider.Settings;
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import android.view.WindowManager;
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public class BrightnessUtil {
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/**
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* 判断是否开启了自动亮度调节
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*
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* @return
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*/
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public static boolean isAutoBrightness(ContentResolver aContentResolver) {
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boolean automicBrightness = false;
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try {
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automicBrightness = Settings.System.getInt(aContentResolver,
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Settings.System.SCREEN_BRIGHTNESS_MODE) == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC;
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} catch (Settings.SettingNotFoundException e) {
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e.printStackTrace();
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}
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return automicBrightness;
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}
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/**
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* 获取屏幕的亮度
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*
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* @param activity
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* @return
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*/
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public static int getScreenBrightness(Activity activity) {
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int nowBrightnessValue = 0;
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ContentResolver resolver = activity.getContentResolver();
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try {
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nowBrightnessValue = Settings.System.getInt(
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resolver, Settings.System.SCREEN_BRIGHTNESS);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return nowBrightnessValue;
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}
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/**
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* 设置亮度
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*
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* @param activity
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* @param brightness
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*/
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public static void setBrightness(Activity activity, int brightness) {
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// Settings.System.putInt(activity.getContentResolver(),
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// Settings.System.SCREEN_BRIGHTNESS_MODE,
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// Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
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WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
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lp.screenBrightness = Float.valueOf(brightness) * (1f / 255f);
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activity.getWindow().setAttributes(lp);
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}
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/**
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* 设置亮度
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*
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* @param activity
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* @param brightness
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*/
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public static void setBrightness(Activity activity, float brightness) {
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// Settings.System.putInt(activity.getContentResolver(),
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// Settings.System.SCREEN_BRIGHTNESS_MODE,
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// Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
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WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
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lp.screenBrightness = brightness;
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activity.getWindow().setAttributes(lp);
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}
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/**
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* 停止自动亮度调节
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*
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* @param activity
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*/
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public static void stopAutoBrightness(Activity activity) {
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Settings.System.putInt(activity.getContentResolver(),
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Settings.System.SCREEN_BRIGHTNESS,
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Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
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}
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/**
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* 开启亮度自动调节
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*
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* @param activity
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*/
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public static void startAutoBrightness(Activity activity) {
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Settings.System.putInt(activity.getContentResolver(),
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Settings.System.SCREEN_BRIGHTNESS_MODE,
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Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC);
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}
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/**
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* 保存亮度设置状态
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*
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* @param resolver
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* @param brightness
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*/
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public static void saveBrightness(ContentResolver resolver, int brightness) {
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Uri uri = Settings.System
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.getUriFor("screen_brightness");
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Settings.System.putInt(resolver, "screen_brightness",
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brightness);
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resolver.notifyChange(uri, null);
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}
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}
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