編輯:關於Android編程
一、屏幕分辨率
Display display = getWindowManager().getDefaultDisplay(); Point size = new Point(); display.getSize(size); int width = size.x; int height = size.y;
或者:
DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics); int width = metrics.widthPixels; int height = metrics.heightPixels
上面的代碼是要在能獲取到Activity
的情況下使用的,如果無法獲取到Activity
,則可以使用一下的代碼:
WindowManager wm = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE); Display display = wm.getDefaultDisplay(); Point point = new Point(); display.getSize(point); int width = point.x; int height = point.y;
二、屏幕尺寸
DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); int width=dm.widthPixels; int height=dm.heightPixels; int dens=dm.densityDpi; double wi=(double)width/(double)dens; double hi=(double)height/(double)dens; double x = Math.pow(wi,2); double y = Math.pow(hi,2); double screenInches = Math.sqrt(x+y);
同樣,上面的代碼需要在能獲取到Activity。
三、獲取app名稱
public static String getAppName(Context context) { String appName = ""; try { PackageManager packageManager = context.getPackageManager(); ApplicationInfo applicationInfo = packageManager.getApplicationInfo(context.getPackageName(), 0); appName = (String) packageManager.getApplicationLabel(applicationInfo); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return appName; }
四、獲取設備廠商和設備名稱信息
// 設備廠商 String brand = Build.BRAND; // 設備名稱 String model = Build.MODEL;
獲取DeviceID,SIM和IMSI
TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); String deviceId = tm.getDeviceId(); String sim = tm.getSimSerialNumber(); String imsi = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE).getSubscriberId();
注意需要在AndroidManifest
中添加權限
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
五、獲取網絡狀態
public static String getAPNType(Context context) { //結果返回值 String netType = "nono_connect"; //獲取手機所有連接管理對象 ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); //獲取NetworkInfo對象 NetworkInfo networkInfo = manager.getActiveNetworkInfo(); //NetworkInfo對象為空 則代表沒有網絡 if (networkInfo == null) { return netType; } //否則 NetworkInfo對象不為空 則獲取該networkInfo的類型 int nType = networkInfo.getType(); if (nType == ConnectivityManager.TYPE_WIFI) { //WIFI netType = "wifi"; } else if (nType == ConnectivityManager.TYPE_MOBILE) { int nSubType = networkInfo.getSubtype(); TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); //4G if (nSubType == TelephonyManager.NETWORK_TYPE_LTE && !telephonyManager.isNetworkRoaming()) { netType = "4G"; } else if (nSubType == TelephonyManager.NETWORK_TYPE_UMTS || nSubType == TelephonyManager.NETWORK_TYPE_HSDPA || nSubType == TelephonyManager.NETWORK_TYPE_EVDO_0 && !telephonyManager.isNetworkRoaming()) { netType = "3G"; //2G 移動和聯通的2G為GPRS或EGDE,電信的2G為CDMA } else if (nSubType == TelephonyManager.NETWORK_TYPE_GPRS || nSubType == TelephonyManager.NETWORK_TYPE_EDGE || nSubType == TelephonyManager.NETWORK_TYPE_CDMA && !telephonyManager.isNetworkRoaming()) { netType = "2G"; } else { netType = "2G"; } } return netType; }
六、判斷設備是否root
網上有很多判斷方法,但有些會在界面上彈窗提示獲取權限,下面介紹一種無需彈窗判斷設備是否root的方法:
/** 判斷手機是否root,不彈出root請求框<br/> */ public static boolean isRoot() { String binPath = "/system/bin/su"; String xBinPath = "/system/xbin/su"; if (new File(binPath).exists() && isExecutable(binPath)) return true; if (new File(xBinPath).exists() && isExecutable(xBinPath)) return true; return false; } private static boolean isExecutable(String filePath) { Process p = null; try { p = Runtime.getRuntime().exec("ls -l " + filePath); // 獲取返回內容 BufferedReader in = new BufferedReader(new InputStreamReader( p.getInputStream())); String str = in.readLine(); if (str != null && str.length() >= 4) { char flag = str.charAt(3); if (flag == 's' || flag == 'x') return true; } } catch (IOException e) { e.printStackTrace(); } finally { if (p != null) { p.destroy(); } } return false; }
七、總結
以上就是關於獲取Android中設備各種信息的全部內容,這篇文章對大家開發Android App具有一定參考借鑒價值,希望對大家能有所幫助,如果有疑問大家可以留言交流。
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