获取Android手机相关信息

jopen 6年前

一、Android 获取手机中已安装apk文件信息(PackageInfo、ResolveInfo)(应用图片、应用名、包名等)
1、通过PackageManager可获取手机端已安装的apk文件的信息,具体代码如下:

PackageManager packageManager = this.getPackageManager();  List<PackageInfo> packageInfoList = packageManager.getInstalledPackages(0);

通过上述方法,可得到手机中安装的所有应用程序,包括手动安装的apk包的信息、、系统预装的应用软件的信息,要区分这两类软件可使用以下方法:
(a) 从packageInfoList获取的packageInfo,再通过packageInfo.applicationInfo获取applicationInfo。
(b) 判断(applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM)的值,该值大于0时,表示获取的应用为系统预装的应用,反之则为手动安装的应用。
 (1)获取应用的代码:

public static List<PackageInfo> getAllApps(Context context) {    List<PackageInfo> apps = new ArrayList<PackageInfo>();    PackageManager pManager = context.getPackageManager();    // 获取手机内所有应用    List<PackageInfo> paklist = pManager.getInstalledPackages(0);    for (int i = 0; i < paklist.size(); i++) {     PackageInfo pak = (PackageInfo) paklist.get(i);     // 判断是否为非系统预装的应用程序     if ((pak.applicationInfo.flags & pak.applicationInfo.FLAG_SYSTEM) <= 0) {      apps.add(pak);     }    }    return apps;   }


(2)、获取图片、应用名、包名(ShareItemInfo 类是自己写的,忽视吧):

PackageManager pManager = MessageSendActivity.this.getPackageManager();  List<PackageInfo> appList  = Utils.getAllApps(MessageSendActivity.this);  for(int i=0;i<appList.size();i++) {      PackageInfo pinfo = appList.get(i);      shareItem = new ShareItemInfo();      shareItem.setIcon(pManager.getApplicationIcon(pinfo.applicationInfo));      shareItem.setLabel(pManager.getApplicationLabel(pinfo.applicationInfo).toString());      shareItem.setPackageName(pinfo.applicationInfo.packageName);  }


(3)获取支持分享的应用的代码:

 public static List<ResolveInfo> getShareApps(Context context){       List<ResolveInfo> mApps = new ArrayList<ResolveInfo>();        Intent intent=new Intent(Intent.ACTION_SEND,null);        intent.addCategory(Intent.CATEGORY_DEFAULT);        intent.setType("text/plain");        PackageManager pManager = context.getPackageManager();       mApps = pManager.queryIntentActivities(intent,PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);      return mApps;    }

由于该方法,返回的并不是PackageInfo 对象。而是ResolveInfo。因此获取图片、应用名、包名的方法不一样,如下:

     PackageManager pManager = MessageSendActivity.this.getPackageManager();            List<ResolveInfo> resolveList  = Utils.getShareApps(MessageSendActivity.this);       for(int i=0;i<resolveList.size();i++) {           ResolveInfo resolve = resolveList.get(i);           ShareItemInfo shareItem = new ShareItemInfo();           //set Icon           shareItem.setIcon(resolve.loadIcon(pManager));           //set Application Name           shareItem.setLabel(resolve.loadLabel(pManager).toString());           //set Package Name            shareItem.setPackageName(resolve.activityInfo.packageName);       } 


总结:
通过 PackageInfo 获取具体信息方法:
包名获取方法:packageInfo.packageName
icon获取获取方法:packageManager.getApplicationIcon(applicationInfo)
应用名称获取方法:packageManager.getApplicationLabel(applicationInfo)
使用权限获取方法:packageManager.getPackageInfo(packageName,PackageManager.GET_PERMISSIONS)
.requestedPermissions
通过 ResolveInfo 获取具体信息方法:
包名获取方法:resolve.activityInfo.packageName
icon获取获取方法:resolve.loadIcon(packageManager)
应用名称获取方法:resolve.loadLabel(packageManager).toString()

 

二、获取手机可用内存和总内存(手机的内存信息主要在/proc/meminfo文件中,其中第一行是总内存,而剩余内存可通过ActivityManager.MemoryInfo得到):

private String[] getTotalMemory() {               String[] result = {"",""};  //1-total 2-avail               ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo();                 mActivityManager.getMemoryInfo(mi);                 long mTotalMem = 0;               long mAvailMem = mi.availMem;               String str1 = "/proc/meminfo";               String str2;               String[] arrayOfString;               try {                   FileReader localFileReader = new FileReader(str1);                   BufferedReader localBufferedReader = new BufferedReader(localFileReader, 8192);                   str2 = localBufferedReader.readLine();                   arrayOfString = str2.split("\\s+");                   mTotalMem = Integer.valueOf(arrayOfString[1]).intValue() * 1024;                   localBufferedReader.close();               } catch (IOException e) {                   e.printStackTrace();               }               result[0] = Formatter.formatFileSize(this, mTotalMem);               result[1] = Formatter.formatFileSize(this, mAvailMem);               Log.i(TAG, "meminfo total:" + result[0] + " used:" + result[1]);               return result;        }



三、获取手机CPU信息(和内存信息同理,cpu信息可通过读取/proc/cpuinfo文件来得到,其中第一行为cpu型号,第二行为cpu频率):

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[0] = cpuInfo[0] + arrayOfString[i] + " ";                    }                    str2 = localBufferedReader.readLine();                    arrayOfString = str2.split("\\s+");                    cpuInfo[1] += arrayOfString[2];                    localBufferedReader.close();                } catch (IOException e) {                }                Log.i(TAG, "cpuinfo:" + cpuInfo[0] + " " + cpuInfo[1]);                return cpuInfo;            }

 

四、获取手机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;        }



 五、获取屏幕密度三种方法:

// 获取屏幕密度(方法1)  int screenWidth  = getWindowManager().getDefaultDisplay().getWidth();       // 屏幕宽(像素,如:480px)  int screenHeight = getWindowManager().getDefaultDisplay().getHeight();      // 屏幕高(像素,如:800p)     Log.e(TAG + "  getDefaultDisplay", "screenWidth=" + screenWidth + "; screenHeight=" + screenHeight);        // 获取屏幕密度(方法2)  DisplayMetrics dm = new DisplayMetrics();  dm = getResources().getDisplayMetrics();     float density  = dm.density;        // 屏幕密度(像素比例:0.75/1.0/1.5/2.0)  int densityDPI = dm.densityDpi;     // 屏幕密度(每寸像素:120/160/240/320)  float xdpi = dm.xdpi;             float ydpi = dm.ydpi;     Log.e(TAG + "  DisplayMetrics", "xdpi=" + xdpi + "; ydpi=" + ydpi);  Log.e(TAG + "  DisplayMetrics", "density=" + density + "; densityDPI=" + densityDPI);     screenWidth  = dm.widthPixels;      // 屏幕宽(像素,如:480px)  screenHeight = dm.heightPixels;     // 屏幕高(像素,如:800px)     Log.e(TAG + "  DisplayMetrics(111)", "screenWidth=" + screenWidth + "; screenHeight=" + screenHeight);           // 获取屏幕密度(方法3)  dm = new DisplayMetrics();  getWindowManager().getDefaultDisplay().getMetrics(dm);     density  = dm.density;      // 屏幕密度(像素比例:0.75/1.0/1.5/2.0)  densityDPI = dm.densityDpi;     // 屏幕密度(每寸像素:120/160/240/320)  xdpi = dm.xdpi;           ydpi = dm.ydpi;     Log.e(TAG + "  DisplayMetrics", "xdpi=" + xdpi + "; ydpi=" + ydpi);  Log.e(TAG + "  DisplayMetrics", "density=" + density + "; densityDPI=" + densityDPI);     int screenWidthDip = dm.widthPixels;        // 屏幕宽(dip,如:320dip)  int screenHeightDip = dm.heightPixels;      // 屏幕宽(dip,如:533dip)     Log.e(TAG + "  DisplayMetrics(222)", "screenWidthDip=" + screenWidthDip + "; screenHeightDip=" + screenHeightDip);     screenWidth  = (int)(dm.widthPixels * density + 0.5f);      // 屏幕宽(px,如:480px)  screenHeight = (int)(dm.heightPixels * density + 0.5f);     // 屏幕高(px,如:800px)     Log.e(TAG + "  DisplayMetrics(222)", "screenWidth=" + screenWidth + "; screenHeight=" + screenHeight);