android中常用的系统工具类整理
来源：互联网 发布：python局域网嗅探 编辑：程序博客网 时间：2024/06/06 02:21
这里是本人收集的一些系统的/非系统的工具类整理
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)public class TDevice { // 手机网络类型 public static final int NETTYPE_WIFI = 0x01; public static final int NETTYPE_CMWAP = 0x02; public static final int NETTYPE_CMNET = 0x03; public static boolean GTE_HC; public static boolean GTE_ICS; public static boolean PRE_HC; private static Boolean _hasBigScreen = null; private static Boolean _hasCamera = null; private static Boolean _isTablet = null; private static Integer _loadFactor = null; private static int _pageSize = -1; public static float displayDensity = 0.0F; static { GTE_ICS = Build.VERSION.SDK_INT >= 14; GTE_HC = Build.VERSION.SDK_INT >= 11; PRE_HC = Build.VERSION.SDK_INT >= 11 ? false : true; } public TDevice() { } /** * 获取系统当前当前时间戳 */ public static String getTimesTamp() { long timestamp = System.currentTimeMillis()/1000; return String.valueOf(timestamp); } /** * dp值 * * @param dp * @return */ public static float dpToPixel(float dp) { return dp * (getDisplayMetrics().densityDpi / 160F); } public static int getDefaultLoadFactor() { if (_loadFactor == null) { Integer integer = Integer.valueOf(0xf & CXWYApplication.getContext() .getResources().getConfiguration().screenLayout); _loadFactor = integer; _loadFactor = Integer.valueOf(Math.max(integer.intValue(), 1)); } return _loadFactor.intValue(); } /** * 获取密度 * * @return */ public static float getDensity() { if (displayDensity == 0.0) displayDensity = getDisplayMetrics().density; return displayDensity; } /** * 获取屏幕参数 * {density=3.5, width=1440, height=2392, scaledDensity=3.5, xdpi=560.0, ydpi=560.0} * * @return */ public static DisplayMetrics getDisplayMetrics() { DisplayMetrics displaymetrics = new DisplayMetrics(); ((WindowManager) CXWYApplication.getContext().getSystemService( Context.WINDOW_SERVICE)).getDefaultDisplay().getMetrics( displaymetrics); return displaymetrics; } /** * 获取屏幕高度 * * @return */ public static float getScreenHeight() { return getDisplayMetrics().heightPixels; } /** * 获取屏幕宽度 * * @return */ public static float getScreenWidth() { return getDisplayMetrics().widthPixels; } public static int[] getRealScreenSize(Activity activity) { int[] size = new int[2]; int screenWidth = 0, screenHeight = 0; WindowManager w = activity.getWindowManager(); Display d = w.getDefaultDisplay(); DisplayMetrics metrics = new DisplayMetrics(); d.getMetrics(metrics); // since SDK_INT = 1; screenWidth = metrics.widthPixels; screenHeight = metrics.heightPixels; // includes window decorations (statusbar bar/menu bar) if (Build.VERSION.SDK_INT >= 14 && Build.VERSION.SDK_INT < 17) try { screenWidth = (Integer) Display.class.getMethod("getRawWidth") .invoke(d); screenHeight = (Integer) Display.class .getMethod("getRawHeight").invoke(d); } catch (Exception ignored) { } // includes window decorations (statusbar bar/menu bar) if (Build.VERSION.SDK_INT >= 17) try { Point realSize = new Point(); Display.class.getMethod("getRealSize", Point.class).invoke(d, realSize); screenWidth = realSize.x; screenHeight = realSize.y; } catch (Exception ignored) { } size[0] = screenWidth; size[1] = screenHeight; return size; } public static int getStatusBarHeight() { Class<?> c = null; Object obj = null; Field field = null; int x = 0; try { c = Class.forName("com.android.internal.R$dimen"); obj = c.newInstance(); field = c.getField("status_bar_height"); x = Integer.parseInt(field.get(obj).toString()); return CXWYApplication.getContext().getResources() .getDimensionPixelSize(x); } catch (Exception e) { e.printStackTrace(); } return 0; } /** * 获取唯一标识码 * 9121e9b9-f0ee-4ea6-a9bd-802db5535f9b * * @return */ public static String getUdid() { String udid = PreferencesUtils.getInstance().getString(CXWYApplication.getContext(), "udid", ""); if (udid.length() == 0) { udid = String.format("%s", UUID.randomUUID()); PreferencesUtils.getInstance().putString(CXWYApplication.getContext(), "udid", udid); } return udid; } /** * 是否大屏 * * @return */ public static boolean hasBigScreen() { boolean flag = true; if (_hasBigScreen == null) { boolean flag1; if ((0xf & CXWYApplication.getContext().getResources() .getConfiguration().screenLayout) >= 3) flag1 = flag; else flag1 = false; Boolean boolean1 = Boolean.valueOf(flag1); _hasBigScreen = boolean1; if (!boolean1.booleanValue()) { if (getDensity() <= 1.5F) flag = false; _hasBigScreen = Boolean.valueOf(flag); } } return _hasBigScreen.booleanValue(); } /** * 是否存在相机 * * @return */ public static final boolean hasCamera() { if (_hasCamera == null) { PackageManager pckMgr = CXWYApplication.getContext() .getPackageManager(); boolean flag = pckMgr .hasSystemFeature("android.hardware.camera.front"); boolean flag1 = pckMgr.hasSystemFeature("android.hardware.camera"); boolean flag2; if (flag || flag1) flag2 = true; else flag2 = false; _hasCamera = Boolean.valueOf(flag2); } return _hasCamera.booleanValue(); } /** * 判断是否有物理的menu键 * * @param context * @return */ public static boolean hasHardwareMenuKey(Context context) { boolean flag = false; if (PRE_HC) flag = true; else if (GTE_ICS) { flag = ViewConfiguration.get(context).hasPermanentMenuKey(); } else flag = false; return flag; } /** * 判断是否有GSM网络 * 需要权限 ACCESS_NETWORK_STATE * * @return */ public static boolean hasInternet() { boolean flag; if (((ConnectivityManager) CXWYApplication.getContext().getSystemService( "connectivity")).getActiveNetworkInfo() != null) { flag = true; } else flag = false; return flag; } /** * 是否有google商店 * * @param activity * @param pck * @return */ public static boolean gotoGoogleMarket(Activity activity, String pck) { try { Intent intent = new Intent(); intent.setPackage("com.android.vending"); intent.setAction(Intent.ACTION_VIEW); intent.setData(Uri.parse("market://details?id=" + pck)); activity.startActivity(intent); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 判断程序是否安装 * * @param pckName * @return */ public static boolean isPackageExist(String pckName) { try { PackageInfo pckInfo = CXWYApplication.getContext().getPackageManager() .getPackageInfo(pckName, 0); if (pckInfo != null) return true; } catch (PackageManager.NameNotFoundException e) { KLog.e(e.getMessage()); } return false; } /** * 隐藏动画视图 * * @param view */ public static void hideAnimatedView(View view) { if (PRE_HC && view != null) view.setPadding(view.getWidth(), 0, 0, 0); } /** * 显示动画视图 * * @param view */ public static void showAnimatedView(View view) { if (PRE_HC && view != null) view.setPadding(0, 0, 0, 0); } /** * 显示键盘dialog * * @param dialog */ public static void showSoftKeyboard(Dialog dialog) { dialog.getWindow().setSoftInputMode(4); } /** * 显示键盘view * * @param view */ public static void showSoftKeyboard(View view) { ((InputMethodManager) CXWYApplication.getContext().getSystemService( Context.INPUT_METHOD_SERVICE)).showSoftInput(view, InputMethodManager.SHOW_FORCED); } /** * 切换键盘 * * @param view */ public static void toogleSoftKeyboard(View view) { ((InputMethodManager) CXWYApplication.getContext().getSystemService( Context.INPUT_METHOD_SERVICE)).toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS); } /** * 隐藏键盘 * * @param view */ public static void hideSoftKeyboard(View view) { if (view == null) return; ((InputMethodManager) CXWYApplication.getContext().getSystemService( Context.INPUT_METHOD_SERVICE)).hideSoftInputFromWindow( view.getWindowToken(), 0); } /** * 判断是否横屏 * * @return */ public static boolean isLandscape() { boolean flag; if (CXWYApplication.getContext().getResources().getConfiguration().orientation == 2) flag = true; else flag = false; return flag; } /** * 判断是否竖屏 * * @return */ public static boolean isPortrait() { boolean flag = true; if (CXWYApplication.getContext().getResources().getConfiguration().orientation != 1) flag = false; return flag; } /** * 判断是否平板 * * @return */ public static boolean isTablet() { if (_isTablet == null) { boolean flag; if ((0xf & CXWYApplication.getContext().getResources() .getConfiguration().screenLayout) >= 3) flag = true; else flag = false; _isTablet = Boolean.valueOf(flag); } return _isTablet.booleanValue(); } /** * 单位转换 * * @param f * @return */ public static float pixelsToDp(float f) { return f / (getDisplayMetrics().densityDpi / 160F); } /** * 判断是否有sd卡 * * @return */ public static boolean isSdcardReady() { return Environment.MEDIA_MOUNTED.equals(Environment .getExternalStorageState()); } /** * 判断系统语言国家 * * @return */ public static String getCurCountryLan() { return CXWYApplication.getContext().getResources().getConfiguration().locale .getLanguage() + "-" + CXWYApplication.getContext().getResources().getConfiguration().locale .getCountry(); } /** * 判断是否中文简体（CN）国家中国 * * @return */ public static boolean isZhCN() { String lang = CXWYApplication.getContext().getResources() .getConfiguration().locale.getCountry(); if (lang.equalsIgnoreCase("CN")) { return true; } return false; } /** * 获取两个数的百分比 * * @param p1 * @param p2 * @return */ public static String percent(double p1, double p2) { String str; double p3 = p1 / p2; NumberFormat nf = NumberFormat.getPercentInstance(); nf.setMinimumFractionDigits(5);//保留的小数位数(精度) str = nf.format(p3); return str; } public static String percent2(double p1, double p2) { String str; double p3 = p1 / p2; NumberFormat nf = NumberFormat.getPercentInstance(); nf.setMinimumFractionDigits(0); str = nf.format(p3); return str; } /** * 打开本app在应用商店的页面 * * @param context */ public static void openAppInMarket(Context context) { if (context != null) { String pckName = context.getPackageName(); try { String str = "market://details?id=" + pckName; Intent localIntent = new Intent("android.intent.action.VIEW"); localIntent.setData(Uri.parse(str)); context.startActivity(localIntent); } catch (Exception ex) { } } } /** * 全屏显示，去掉顶部状态栏 * * @param activity */ public static void setFullScreen(Activity activity) { WindowManager.LayoutParams params = activity.getWindow() .getAttributes(); params.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN; activity.getWindow().setAttributes(params); activity.getWindow().addFlags( WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS); } /** * 关闭全屏显示 * * @param activity */ public static void cancelFullScreen(Activity activity) { WindowManager.LayoutParams params = activity.getWindow() .getAttributes(); params.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN); activity.getWindow().setAttributes(params); activity.getWindow().clearFlags( WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS); } /** * 得到应用包名 * * @param pckName * @return */ public static PackageInfo getPackageInfo(String pckName) { try { return CXWYApplication.getContext().getPackageManager() .getPackageInfo(pckName, 0); } catch (PackageManager.NameNotFoundException e) { KLog.e(e.getMessage()); } return null; } /** * 获得app版本号 * * @return */ public static int getVersionCode() { int versionCode = 0; try { versionCode = CXWYApplication.getContext() .getPackageManager() .getPackageInfo(CXWYApplication.getContext().getPackageName(), 0).versionCode; } catch (PackageManager.NameNotFoundException ex) { versionCode = 0; } return versionCode; } public static int getVersionCode(String packageName) { int versionCode = 0; try { versionCode = CXWYApplication.getContext().getPackageManager() .getPackageInfo(packageName, 0).versionCode; } catch (PackageManager.NameNotFoundException ex) { versionCode = 0; } return versionCode; } /** * 获取版本名称 * * @return */ public static String getVersionName() { String name = ""; try { name = CXWYApplication.getContext() .getPackageManager() .getPackageInfo(CXWYApplication.getContext().getPackageName(), 0).versionName; } catch (PackageManager.NameNotFoundException ex) { name = ""; } return name; } public static boolean isScreenOn() { PowerManager pm = (PowerManager) CXWYApplication.getContext() .getSystemService(Context.POWER_SERVICE); return pm.isScreenOn(); } /** * 安装apk * * @param context * @param file */ public static void installAPK(Context context, File file) { if (file == null || !file.exists()) return; Intent intent = new Intent(); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setAction(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive"); context.startActivity(intent); } /** * 获得安转的apk * * @param file * @return */ public static Intent getInstallApkIntent(File file) { Intent intent = new Intent(); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setAction(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive"); return intent; } /** * 打电话 * * @param context * @param number */ public static void openDial(Context context, String number) { Uri uri = Uri.parse("tel:" + number); Intent it = new Intent(Intent.ACTION_DIAL, uri); context.startActivity(it); } /** * 发短信 * * @param context * @param smsBody * @param tel */ public static void openSMS(Context context, String smsBody, String tel) { Uri uri = Uri.parse("smsto:" + tel); Intent it = new Intent(Intent.ACTION_SENDTO, uri); it.putExtra("sms_body", smsBody); context.startActivity(it); } public static void openDail(Context context) { Intent intent = new Intent(Intent.ACTION_DIAL); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(intent); } public static void openSendMsg(Context context) { Uri uri = Uri.parse("smsto:"); Intent intent = new Intent(Intent.ACTION_SENDTO, uri); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(intent); } /** * 调用系统相机 * * @param context */ public static void openCamera(Context context) { Intent intent = new Intent(); // 调用照相机 intent.setAction("android.media.action.STILL_IMAGE_CAMERA"); intent.setFlags(0x34c40000); context.startActivity(intent); } /** * 获取移动设备标识码 * 需要权限android.permission.READ_PHONE_STATE * * @return */ public static String getIMEI() { TelephonyManager tel = (TelephonyManager) CXWYApplication.getContext() .getSystemService(Context.TELEPHONY_SERVICE); return tel.getDeviceId(); } /** * 获得手机型号 * * @return */ public static String getPhoneType() { return Build.MODEL; } /** * 打开手机上安装的指定包名的app * * @param context * @param packageName */ public static void openApp(Context context, String packageName) { Intent mainIntent = CXWYApplication.getContext().getPackageManager() .getLaunchIntentForPackage(packageName); if (mainIntent == null) { mainIntent = new Intent(packageName); } else { KLog.i("Action:" + mainIntent.getAction()); } context.startActivity(mainIntent); } public static boolean openAppActivity(Context context, String packageName, String activityName) { Intent intent = new Intent(Intent.ACTION_MAIN); intent.addCategory(Intent.CATEGORY_LAUNCHER); ComponentName cn = new ComponentName(packageName, activityName); intent.setComponent(cn); try { context.startActivity(intent); return true; } catch (Exception e) { return false; } } /** * 判断wifi是否打开 * * @return */ public static boolean isWifiOpen() { boolean isWifiConnect = false; ConnectivityManager cm = (ConnectivityManager) CXWYApplication.getContext().getSystemService(Context.CONNECTIVITY_SERVICE); // check the networkInfos numbers NetworkInfo[] networkInfos = cm.getAllNetworkInfo(); for (int i = 0; i < networkInfos.length; i++) { if (networkInfos[i].getState() == NetworkInfo.State.CONNECTED) { if (networkInfos[i].getType() == ConnectivityManager.TYPE_MOBILE) { isWifiConnect = false; } if (networkInfos[i].getType() == ConnectivityManager.TYPE_WIFI) { isWifiConnect = true; } } } return isWifiConnect; } /** * 卸载指定包名的app * * @param context * @param packageName */ public static void uninstallApk(Context context, String packageName) { if (isPackageExist(packageName)) { Uri packageURI = Uri.parse("package:" + packageName); Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI); context.startActivity(uninstallIntent); } } @SuppressWarnings("deprecation") public static void copyTextToBoard(String string) { if (TextUtils.isEmpty(string)) return; ClipboardManager clip = (ClipboardManager) CXWYApplication.getContext() .getSystemService(Context.CLIPBOARD_SERVICE); clip.setText(string);// AppContext.showToast(R.string.copy_success); } /** * 发送邮件 * * @param context * @param subject 主题 * @param content 内容 * @param emails 邮件地址 */ public static void sendEmail(Context context, String subject, String content, String... emails) { try { Intent intent = new Intent(Intent.ACTION_SEND); // 模拟器 // intent.setType("text/plain"); intent.setType("message/rfc822"); // 真机 intent.putExtra(Intent.EXTRA_EMAIL, emails); intent.putExtra(Intent.EXTRA_SUBJECT, subject); intent.putExtra(Intent.EXTRA_TEXT, content); context.startActivity(intent); } catch (ActivityNotFoundException e) { e.printStackTrace(); } } public static int getStatuBarHeight() { Class<?> c = null; Object obj = null; Field field = null; int x = 0, sbar = 38;// 默认为38，貌似大部分是这样的 try { c = Class.forName("com.android.internal.R$dimen"); obj = c.newInstance(); field = c.getField("status_bar_height"); x = Integer.parseInt(field.get(obj).toString()); sbar = CXWYApplication.getContext().getResources() .getDimensionPixelSize(x); } catch (Exception e1) { e1.printStackTrace(); } return sbar; } public static int getActionBarHeight(Context context) { int actionBarHeight = 0; TypedValue tv = new TypedValue(); if (context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics()); if (actionBarHeight == 0 && context.getTheme().resolveAttribute(R.attr.actionBarSize, tv, true)) { actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics()); } return actionBarHeight; } public static boolean hasStatusBar(Activity activity) { WindowManager.LayoutParams attrs = activity.getWindow().getAttributes(); if ((attrs.flags & WindowManager.LayoutParams.FLAG_FULLSCREEN) == WindowManager.LayoutParams.FLAG_FULLSCREEN) { return false; } else { return true; } } /** * 调用系统安装了的应用分享 * * @param context * @param title * @param url */ public static void showSystemShareOption(Activity context, final String title, final String url) { Intent intent = new Intent(Intent.ACTION_SEND); intent.setType("text/plain"); intent.putExtra(Intent.EXTRA_SUBJECT, "分享：" + title); intent.putExtra(Intent.EXTRA_TEXT, title + " " + url); context.startActivity(Intent.createChooser(intent, "选择分享")); } /** * 获取当前网络类型 * * @return 0：没有网络 1：WIFI网络 2：WAP网络 3：NET网络 */ public static int getNetworkType() { int netType = 0; ConnectivityManager connectivityManager = (ConnectivityManager) CXWYApplication.getContext() .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo(); if (networkInfo == null) { return netType; } int nType = networkInfo.getType(); if (nType == ConnectivityManager.TYPE_MOBILE) { String extraInfo = networkInfo.getExtraInfo(); if (!TextUtils.isEmpty(extraInfo)) { if (extraInfo.toLowerCase().equals("cmnet")) { netType = NETTYPE_CMNET; } else { netType = NETTYPE_CMWAP; } } } else if (nType == ConnectivityManager.TYPE_WIFI) { netType = NETTYPE_WIFI; } return netType; }} 0 0
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