android 获取系统的参数(如音量大小，背光，网络类型等)

1. private int getBrightness(){  
2.         int brightness = -1;  
3.         try{  
4.             brightness = Settings.System.getInt(this.getContentResolver(), Settings.System.SCREEN_BRIGHTNESS);  
5.         }catch(SettingNotFoundException ex){  
6.             //new Exception(ex.toString());  
7.         }  
8.           
9.         return brightness;  
10.     }  
11.       
12.     private int getVolume(){  
13.         int volume = -1;  
14.         AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);  
15.         volume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);  
16.           
17.         return volume;  
18.     }  
19.       
20.     private String getNetworkType(){  
21.         ConnectivityManager connManager = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);  
22.         NetworkInfo networkinfo = connManager.getActiveNetworkInfo();  
23.         String networkType = "";  
24.         if(networkinfo != null){  
25.             networkType = networkinfo.getTypeName();              
26.         }  
27.           
28.         return networkType;  
29.     }  

权限开通

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

转载于:https://www.cnblogs.com/Viki/archive/2012/06/19/2554384.html