android调节屏幕亮度
一:只改变当前程序android屏幕亮度
(1)方法:
lp.screenBrightness 取值 0.0 -- 1.0 ※设定值(float)的范围,默认小于 0(系统设定)、0.0(暗)~1.0(亮) ※调用处理的地方,例如, Activity.onCreate()等等
代码:
WindowManager.LayoutParams lp = getWindow().getAttributes();
lp.screenBrightness = 1.0f;
getWindow().setAttributes(lp);
(2)恢复
(3)最小亮度
(4)封装进度条控制
1、封装类:
package com.cindigo.MyView;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.preference.DialogPreference;
import android.preference.PreferenceManager;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.TextView;
/**
*
* @Cindigo HUST
*
* @author jairkong
*
* @SINCE 2012-11
*
* @模块及功能 自定义SeekBarPreference
*
**/
/*
* 自定义SeekBarPreference
*/
public class SeekBarPreference extends DialogPreference implements SeekBar.OnSeekBarChangeListener
{
private static final String androidns="http://schemas.android.com/apk/res/android";
public SeekBar mSeekBar;
private TextView mSplashText,mValueText;
private Context mContext;
private String mDialogMessage, mSuffix;
private int mDefault, mMax, mValue = 0,oldValue=0,preValue=0;
public SeekBarPreference(Context context, AttributeSet attrs) {
super(context,attrs);
mContext = context;
mDialogMessage = attrs.getAttributeValue(androidns,"dialogMessage");
mSuffix = attrs.getAttributeValue(androidns,"text");
mDefault = attrs.getAttributeIntValue(androidns,"defaultValue", 0);
mMax = attrs.getAttributeIntValue(androidns,"max", 100);
Log.e("SeekBarPreference", "SeekBarPreference1---"+"defaultValue:"+mDefault+"mDefault:"+mMax);
}
public SeekBarPreference(Context context, AttributeSet attrs,int defStyle) {
super(context, attrs, defStyle);
Log.e("SeekBarPreference", "SeekBarPreference2");
}
/**
* 函数功能:创建dialog组建
*
* @param null
*
* @return layout
*
*/
@Override
protected View onCreateDialogView() {
LinearLayout.LayoutParams params;
LinearLayout layout = new LinearLayout(mContext);
layout.setOrientation(LinearLayout.VERTICAL);
layout.setPadding(6,6,6,6);
mSplashText = new TextView(mContext);
mSplashText.setTextColor(Color.WHITE);
mSplashText.setTextSize(20);
if (mDialogMessage != null)
mSplashText.setText(mDialogMessage);
layout.addView(mSplashText);
mValueText = new TextView(mContext);
mValueText.setGravity(Gravity.CENTER_HORIZONTAL);
mValueText.setTextSize(25);
mValueText.setTextColor(Color.WHITE);
params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
mValue = shouldPersist() ? getPersistedInt(mDefault) : 0;
if (mValueText != null){
String volum=String.valueOf(100*mValue/getMax())+"%";
mValueText.setText(mSuffix == null ? volum : mSuffix.concat(volum));
}
layout.addView(mValueText, params);mSeekBar = new SeekBar(mContext);
//设置progressbar属性
setMax(mMax);
setProgress(mValue);
mSeekBar.setOnSeekBarChangeListener(this);
layout.addView(mSeekBar, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
Log.e("SeekBarPreference", "onCreateDialogView---getProgress():"+getProgress()+"---Max:"+mMax);
getOldValue();//得到并保存初始值
Log.e("SeekBarPreference", "onCreateDialogView---oldValue:"+oldValue);
return layout;
}
/**
* 函数功能:重写绑定视图函数
*
* @param
*
* @return null
*
*/
@Override
protected void onBindDialogView(View v) {
super.onBindDialogView(v);
//设置progressbar属性
setMax(mMax);
setProgress(mValue);
Log.e("SeekBarPreference", "onBindDialogView---mValue:"+mValue);
}
/**
* 函数功能:重写sharepreference初始化函数
*
* @param
*
* @return null
*
*/
@Override
protected void onSetInitialValue(boolean restore, Object defaultValue)
{
super.onSetInitialValue(restore, defaultValue);
if (restore) {
mValue = shouldPersist() ? getPersistedInt(mDefault) : 0;
Log.e("SeekBarPreference", "onSetInitialValue--true--mValue:"+mValue+"mDefault:"+mDefault);
}else{
mValue = (Integer)defaultValue;
Log.e("SeekBarPreference", "onSetInitialValue--false--mValue:"+mValue);
}
}
/**
* 函数功能:重写seekbar中progress值改变函数
*
* @param
*
* @return null
*
*/
public void onProgressChanged(SeekBar seek, int value, boolean fromTouch)
{
String volum=String.valueOf(100*value/getMax())+"%";
mValueText.setText(mSuffix == null ? volum : mSuffix.concat(volum));
if (shouldPersist()){
persistInt(value);
Log.d("SeekBarPreference", "onProgressChanged---onProgressChanged:"+persistInt(value));
}
callChangeListener(new Integer(value));
this.mValue=value;
Log.d("SeekBarPreference", "onProgressChanged---onProgressChanged:"+value);
}
/**
* 函数功能:重写开始滑动seekbar
*
* @param null
*
* @return null
*
*/
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
Log.e("SeekBarPreference", "onStartTrackingTouch---oldValue:"+oldValue);
}
/**
* 函数功能:重写停止滑动seekbar
*
* @param null
*
* @return null
*
*/
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
updatePreference(mValue);
notifyChanged();
Log.e("SeekBarPreference", "onStopTrackingTouch+preValue:"+getPreferenceValue()+"mvalue:"+mValue);
}
/**
* 函数功能:dialog关闭
*
* @param
*
* @return null
*
*/
@Override
protected void onDialogClosed(boolean positiveResult) {
// TODO Auto-generated method stub
if (positiveResult) {
updatePreference(mValue);
notifyChanged();
Log.e("SeekBarPreference", "onDialogClosed--positive button---mValue:"+mValue);
} else {
updatePreference(oldValue);
notifyChanged();
Log.e("SeekBarPreference", "onDialogClosed--negative button---oldValue:"+oldValue);
}
}
/**
* 函数功能:设置seekbar中的max
*
* @param
*
* @return null
*
*/
public void setMax(int max) {
mMax = max;
if (mSeekBar != null)
mSeekBar.setMax(mMax);
}
/**
* 函数功能:得到seekbar中的max
*
* @param null
*
* @return mMax
*
*/
public int getMax() {
return mMax;
}
/**
* 函数功能:设置seekbar中的progress
*
* @param
*
* @return null
*
*/
public void setProgress(int progress) {
mValue = progress;
if (mSeekBar != null)
mSeekBar.setProgress(progress);
}
/**
* 函数功能:得到seekbar中的progress
*
* @param null
*
* @return mValue
*
*/
public int getProgress() {
return mValue;
}
/**
* 函数功能:更新sharepreference中的值
*
* @param
*
* @return null
*
*/
private void updatePreference(int newValue) {
SharedPreferences.Editor editor = getEditor();
editor.putInt(getKey(), newValue);
editor.commit(); //更新 SharedPreferences 配置文件中的值
}
/**
* 函数功能:得到sharepreference中的值
*
* @param null
*
* @return null
*
*/
public int getPreferenceValue() {
if (shouldPersist()){
this.preValue= getPersistedInt(mDefault);
}
Log.e("SeekBarPreference", "getPreferenceValue---preValue:"+preValue);
return this.preValue;
}
/**
* 函数功能:得到打开dialog之前sharepreference中的值
*
* @param null
*
* @return null
*
*/
public void getOldValue() {
this.oldValue= shouldPersist() ? getPersistedInt(mDefault) : 0;
Log.e("SeekBarPreference", "getOldValue---oldValue:"+oldValue);
}}
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
<PreferenceCategory android:layout="@layout/preference_category" >
<com.cindigo.MyView.SeekBarPreference
android:dialogTitle="@string/preference_volume_dialogtitle"
android:key="preference_volume"
android:title="@string/preference_volume_title"
android:summary="@string/preference_volume_summary"
android:defaultValue="50"
android:max="100"
android:text="音量:"
android:dialogMessage="请在此调节游戏音量大小:"
android:layout="@layout/preference_layout_seekbar"
android:widgetLayout="@layout/preference_arrow"/>
</PreferenceScreen>
public class SettingActivity extends PreferenceActivity implements OnSharedPreferenceChangeListener {private SeekBarPreference sp;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.buttonbar);addPreferencesFromResource(R.xml.custom_setting);sp= PreferenceManager.getDefaultSharedPreferences(this);sp.registerOnSharedPreferenceChangeListener(this);//监听数据变化,调节屏幕亮度}@Overridepublic void onSharedPreferenceChanged(SharedPreferences sp, String key) {// TODO Auto-generated method stubint brightness=sp.getInt("brightness", 125);LayoutParams lp= getWindow().getAttributes();lp.screenBrightness=brightness/255.0f;getWindow().setAttributes(lp);}
}
二、全局亮度(修改手机系统亮度)
(1)说明:
Settings. System.putInt(getContentResolver(), Settings. System.SCREEN_BRIGHTNESS, bright);
Settings. System.putInt(getContentResolver(),Settings. System.SCREEN_BRIGHTNESS_MODE, Settings. System.SCREEN_BRIGHTNESS_MODE_MANUAL);
<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
(2)代码说明:
/*** 判断是否开启了自动亮度调节** @param aContext* @return*/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;}
/*** 获取屏幕的亮度** @param activity* @return*/public static int getScreenBrightness(Activity 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;}
/*** 设置亮度** @param activity* @param brightness*/public static void setBrightness(Activity 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);activity.getWindow().setAttributes(lp);}
/*** 停止自动亮度调节** @param activity*/public static void stopAutoBrightness(Activity activity) {Settings.System.putInt(activity.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS_MODE,Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);}
/*** 开启亮度自动调节** @param activity*/public static void startAutoBrightness(Activity activity) {Settings.System.putInt(activity.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS_MODE,Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC);}
/*** 保存亮度设置状态** @param resolver* @param brightness*/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.notifyChange(uri, null);}
(3)封装:
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;
import android.view.Window;
import android.view.WindowManager;public class ScreenBrightnessTool
{/*** Activty自动调节亮度模式*/public static final int ACTIVITY_BRIGHTNESS_AUTOMATIC = -1;/*** 自动调节模式*/public static final int SCREEN_BRIGHTNESS_MODE_AUTOMATIC = Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC;/*** 手动调节模式*/public static final int SCREEN_BRIGHTNESS_MODE_MANUAL = Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL;/*** 默认亮度*/public static final int SCREEN_BRIGHTNESS_DEFAULT = 75;/*** 最大亮度*/public static final int MAX_BRIGHTNESS = 100;/*** 最小亮度*/public static final int MIN_BRIGHTNESS = 0;private static final int mMaxBrighrness = 255;private static final int mMinBrighrness = 120;// 当前系统调节模式private boolean sysAutomaticMode;// 当前系统亮度值private int sysBrightness;private Context context;private ScreenBrightnessTool(Context context, int sysBrightness,boolean sysAutomaticMode){this.context = context;this.sysBrightness = sysBrightness;this.sysAutomaticMode = sysAutomaticMode;}/*** 创建屏幕亮度工具** @param context* @return*/public static ScreenBrightnessTool Builder(Context context){int brightness;boolean automaticMode;try{// 获取当前系统亮度值brightness = Settings.System.getInt(context.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS);// 获取当前系统调节模式automaticMode = Settings.System.getInt(context.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS_MODE) == SCREEN_BRIGHTNESS_MODE_AUTOMATIC;}catch (SettingNotFoundException e){return null;}return new ScreenBrightnessTool(context, brightness, automaticMode);}/*** 返回当前系统亮度调节模式** @return*/public boolean getSystemAutomaticMode(){return sysAutomaticMode;}/*** 返回当前系统亮度值** @return*/public int getSystemBrightness(){return sysBrightness;}/*** 设置调节模式** @param mode* 调节模式*/public void setMode(int mode){if (mode != SCREEN_BRIGHTNESS_MODE_AUTOMATIC&& mode != SCREEN_BRIGHTNESS_MODE_MANUAL)return;sysAutomaticMode = mode == SCREEN_BRIGHTNESS_MODE_AUTOMATIC;Settings.System.putInt(context.getContentResolver(),Settings.System.SCREEN_BRIGHTNESS_MODE, mode);}/*** 设置屏幕亮度** @param brightness* 亮度值,值为0至100*/public void setBrightness(int brightness){int mid = mMaxBrighrness - mMinBrighrness;int bri = (int) (mMinBrighrness + mid * ((float) brightness)/ MAX_BRIGHTNESS);ContentResolver resolver = context.getContentResolver();Settings.System.putInt(resolver, Settings.System.SCREEN_BRIGHTNESS, bri);}/*** 亮度预览** @param activity* 预览activity* @param brightness* 亮度值(0.47~1)*/public static void brightnessPreview(Activity activity, float brightness){Window window = activity.getWindow();WindowManager.LayoutParams lp = window.getAttributes();lp.screenBrightness = brightness;window.setAttributes(lp);}/*** 亮度预览** @param activity* 预览activity* @param percent* 百分比(0.0~1.00)*/public static void brightnessPreviewFromPercent(Activity activity,float percent){float brightness = percent + (1.0f - percent)* (((float) mMinBrighrness) / mMaxBrighrness);brightnessPreview(activity, brightness);}}
android 关于调节屏幕亮度的问题-CSDN问答Source URL:http://ask.csdn.net/questions/170 |
Android 调节屏幕亮度问题 - kerlubasola - ITeye技术网站Source URL:http://kerlubasola.iteye.com/blog/1581385 |
Android调节屏幕亮度 - android 开发专栏 - 博客频道 - CSDN.NETSource URL:http://blog.csdn.net/androidchuxueze/article/details/7452438 |
Android-Android屏幕亮度设置 - 德问:编程社交问答Source URL:http://www.dewen.org/q/2519 |
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