获取Android各类系统相关信息的接口实现代码

向右看齐 2022-03-09 11:42 144阅读 0赞

/**
       *  获取系统中所有安装包信息
       */
    	public String getAllPackages(Context context)
    	{
    		String appList = "";
    		List<PackageInfo> packages = context.getPackageManager().getInstalledPackages(0);
    		for (PackageInfo packageInfo : packages) 
    		{
    			// 这里可以控制是否需要获取系统级别的package
    			if ((packageInfo.applicationInfo.flags &  ApplicationInfo.FLAG_SYSTEM) == 0)
    			{
    				appList += packageInfo.applicationInfo.loadLabel(getPackageManager()).toString() + ",";
    			}
    		}
    		
    		return appList.substring(0, appList.length()-1);
    	}
    	
    	/**
    	   *  获取系统内存信息
    	   */
    	public String getSysMemoryInfo(Context context)
    	{
    
    		long freeMem = 0;
    		long totalMem = 0;
    		
    		ActivityManager activityManager = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
    		MemoryInfo memoryInfo = new MemoryInfo();
    		activityManager.getMemoryInfo(memoryInfo);
    		
    		freeMem = memoryInfo.availMem/1024/1024;
    		
    		//读取指定文件信息
    		 String path = "/proc/meminfo";
    	        String content = null;
    	        BufferedReader br = null;
    	        try {
    	            br = new BufferedReader(new FileReader(path), 8);
    	            String line;
    	            if ((line = br.readLine()) != null) {
    	                content = line;
    	            }
    	        } catch (FileNotFoundException e) {
    	            e.printStackTrace();
    	        } catch (IOException e) {
    	            e.printStackTrace();
    	        } finally {
    	            if (br != null) {
    	                try {
    	                    br.close();
    	                } catch (IOException e) {
    	                    e.printStackTrace();
    	                }
    	            }
    	        }
    	        // beginIndex
    	        int begin = content.indexOf(':');
    	        // endIndex
    	        int end = content.indexOf('k');
    	        // 截取字符串信息
    
    		content = content.substring(begin + 1, end).trim();
    	    totalMem = Integer.parseInt(content)/1024;
    	    
    
    		
    		return freeMem+" "+totalMem;
    	}
    	
    	
    	/**
    	 * 获取CPU信息
    	 */
        private String getCpuInfo() {  
                 String str1 = "/proc/cpuinfo";  
                String str2 = "";  
                  String cpuInfo="";  //1-cpu型号  //2-cpu频率  
                  String[] arrayOfString;  
                  try {  
                     FileReader fr = new FileReader(str1);  
                     BufferedReader localBufferedReader = new BufferedReader(fr, 8192);  
                     str2 = localBufferedReader.readLine();  
                     arrayOfString = str2.split("\\s+");  
                     for (int i = 2; i < arrayOfString.length; i++) {  
                    	 cpuInfo =  arrayOfString[i] + "  ";  
                     }  
                     str2 = localBufferedReader.readLine();  
                    arrayOfString = str2.split("\\s+");  
                    cpuInfo =cpuInfo + arrayOfString[2];  
                     localBufferedReader.close();  
                 } catch (IOException e) {  
                 }  
                 return cpuInfo;  
             }  
        
    	/**
    	 * 获取MAC地址 
    	 */
           private String getMacAddress(){  
                    String result = "";  
        	        WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);  
                     WifiInfo wifiInfo = wifiManager.getConnectionInfo();  
        	         result = wifiInfo.getMacAddress();  
        	         // Log.i(TAG, "macAdd:" + result);  
        	          return result;  
        	    }  
           
       	/**
       	 * 获取其他手机信息 
       	 */
           private String getInfo() {  
        	          TelephonyManager mTm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);  
        	           String imei = mTm.getDeviceId();  
        	            String imsi = mTm.getSubscriberId();  
        	           String mtype = android.os.Build.MODEL; // 手机型号  
        	             String numer = mTm.getLine1Number(); // 手机号码
        	             
        	             return imei + " " + imsi + " " + mtype + " " + numer;
        	        }  
           
          	/**
          	 * 获取屏幕的分辨率
          	 */
           private String getWeithAndHeight(){  
        	           //这种方式在service中无法使用，  
        	          DisplayMetrics dm = new DisplayMetrics();  
        	          getWindowManager().getDefaultDisplay().getMetrics(dm);  
        	          int width = dm.widthPixels;              //宽  
        	          int height = dm.heightPixels;           //高  
        	      
        	          //在service中也能得到高和宽  
        	         WindowManager mWindowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);  
        	          int width0 = mWindowManager.getDefaultDisplay().getWidth();  
        	          int height0 = mWindowManager.getDefaultDisplay().getHeight();  
        	          
        	          return ""+width +" "+height + " " +width0 + " " +height0;
        	        }