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

上面的代码是要在能获取到Activity的情况下使用的，如果无法获取到Activity，则可以使用一下的代码：

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);

同样，上面的代码需要在能获取到Activity。

三、获取app名称

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、获取设备厂商和设备名称信息

// 设备厂商 String brand = Build.BRAND; // 设备名称 String model = Build.MODEL;

获取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中添加权限

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

五、获取网络状态

public static String getAPNType(Context context) { //结果返回值 String netType = "nono_connect"; //获取手机所有连接管理对象 ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); //获取NetworkInfo对象 NetworkInfo networkInfo = manager.getActiveNetworkInfo(); //NetworkInfo对象为空 则代表没有网络 if (networkInfo == null) { return netType; } //否则 NetworkInfo对象不为空 则获取该networkInfo的类型 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 移动和联通的2G为GPRS或EGDE，电信的2G为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、判断设备是否root

网上有很多判断方法，但有些会在界面上弹窗提示获取权限，下面介绍一种无需弹窗判断设备是否root的方法：

/** 判断手机是否root，不弹出root请求框<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); // 获取返回内容 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、总结

以上就是关于获取Android中设备各种信息的全部内容，这篇文章对大家开发Android App具有一定参考借鉴价值，希望对大家能有所帮助，如果有疑问大家可以留言交流。