Android Util工具类的封装
来源：互联网 发布：php h5 微信支付接口 编辑：程序博客网 时间：2024/04/30 12:00
摘要
本文总结了过往项目和一些资料上的Android 工具类的封装，既当做是总结，也作收集收藏用。感谢网络上诸方资料。
SharedPreferences工具类：SPUtil.java
public class SPUtil { public static final String FILE_DEFAULT = "default"; public static int getInt(String key) { SharedPreferences sharedPreferences = getSharePreferences(FILE_DEFAULT); return sharedPreferences.getInt(key, 0); } public static boolean getBoolean(String key) { SharedPreferences sharedPreferences = getSharePreferences(FILE_DEFAULT); return sharedPreferences.getBoolean(key, false); } public static float getFloat(String key) { SharedPreferences sharedPreferences = getSharePreferences(FILE_DEFAULT); return sharedPreferences.getFloat(key, 0); } public static boolean getBoolean(String key, boolean defValue) { SharedPreferences sharedPreferences = getSharePreferences(FILE_DEFAULT); return sharedPreferences.getBoolean(key, defValue); } public static String getString(String key) { SharedPreferences sharedPreferences = getSharePreferences(FILE_DEFAULT); return sharedPreferences.getString(key,FILE_DEFAULT); } public static String getStringWithDefault(String key, String defStr) { SharedPreferences sharedPreferences = getSharePreferences(FILE_DEFAULT); return sharedPreferences.getString(key, defStr); } public static void putInt(String key, int value) { SharedPreferences.Editor editor = getEditor(getSharePreferences(FILE_DEFAULT)); editor.putInt(key, value); editor.commit(); } public static void putBoolean(String key, boolean value) { SharedPreferences.Editor editor = getEditor(getSharePreferences(FILE_DEFAULT)); editor.putBoolean(key, value); editor.commit(); } public static void putString(String key, String value) { SharedPreferences.Editor editor = getEditor(getSharePreferences(FILE_DEFAULT)); editor.putString(key, value); editor.commit(); } public static void putFloat(String key, float value) { SharedPreferences.Editor editor = getEditor(getSharePreferences(FILE_DEFAULT)); editor.putFloat(key, value); editor.commit(); } public static void putLong(String key, long value) { SharedPreferences.Editor editor = getEditor(getSharePreferences(FILE_DEFAULT)); editor.putLong(key, value); editor.commit(); } public static long getLong(String key) { SharedPreferences sharedPreferences = getSharePreferences(FILE_DEFAULT); return sharedPreferences.getLong(key, 0); } public static int getInt(String key, int defValue) { SharedPreferences sharedPreferences = getSharePreferences(FILE_DEFAULT); return sharedPreferences.getInt(key, defValue); } public static int getInt(String key, String fileName) { SharedPreferences sharedPreferences = getSharePreferences(getFileName(fileName)); return sharedPreferences.getInt(key, 0); } public static boolean getBoolean(String key, String fileName) { SharedPreferences sharedPreferences = getSharePreferences(getFileName(fileName)); return sharedPreferences.getBoolean(key, false); } public static String getString(String key, String fileName) { SharedPreferences sharedPreferences = getSharePreferences(getFileName(fileName)); return sharedPreferences.getString(key, null); } public static float getFloat(String key, String fileName) { SharedPreferences sharedPreferences = getSharePreferences(getFileName(fileName)); return sharedPreferences.getFloat(key, 0); } public static long getLong(String key, String fileName) { SharedPreferences sharedPreferences = getSharePreferences(getFileName(fileName)); return sharedPreferences.getLong(key, 0); } public static void putInt(String key, int value, String fileName) { SharedPreferences.Editor editor = getEditor(getSharePreferences(getFileName(fileName))); editor.putInt(key, value); editor.commit(); } public static void putBoolean(String key, boolean value, String fileName) { SharedPreferences.Editor editor = getEditor(getSharePreferences(getFileName(fileName))); editor.putBoolean(key, value); editor.commit(); } public static void putString(String key, String value, String fileName) { SharedPreferences.Editor editor = getEditor(getSharePreferences(getFileName(fileName))); editor.putString(key, value); editor.commit(); } public static void putFloat(String key, float value, String fileName) { SharedPreferences.Editor editor = getEditor(getSharePreferences(getFileName(fileName))); editor.putFloat(key, value); editor.commit(); } public static void putLong(String key, long value, String fileName) { SharedPreferences.Editor editor = getEditor(getSharePreferences(getFileName(fileName))); editor.putLong(key, value); editor.commit(); } private static SharedPreferences getSharePreferences(String fileName) { return TApplication.getContext().getSharedPreferences(fileName, Context.MODE_PRIVATE); } private static SharedPreferences.Editor getEditor(SharedPreferences sharedPreferences) { return sharedPreferences.edit(); } public static String getFileName(String fileName) { if (!TextUtils.isEmpty(fileName)) { return fileName; } else { return FILE_DEFAULT; } }}ToastUtil.java
public class ToastUtils { private static Toast mToast ; private static Handler mHandler = new Handler(); private static Runnable r = new Runnable() { @Override public void run() { mToast.cancel(); } } ; /** * 自定义toast，重复点击时，会直接替换文本，不会重新创建新的Toast并加入队列中一条条显示 * @param context * @param text * @param duration */ public static void showToast(Context context,String text,int duration) { mHandler.removeCallbacks(r); if (mToast != null) { mToast.setText(text); } else { mToast = Toast.makeText(context,text,Toast.LENGTH_SHORT); } mHandler.postDelayed(r,duration) ; mToast.show(); } /** * 防重复点击的toast，即便是帕金森患者也不会导致toast一直显示着 * @param text */ public static void showToast(String text) { showToast(TApplication.getContext(),text,1000); } public static void showToast(Context context,int resId,int duration) { showToast(context,context.getResources().getString(resId),duration); } public static void show(CharSequence text) { Toast.makeText(TApplication.getContext(), text, Toast.LENGTH_SHORT).show(); } /** * 显示土司的工具类,安全的工具类可以在任意线程里面显示 * @param activity * @param text */ public static void show(final Activity activity, final CharSequence text) { if ("main".equalsIgnoreCase(Thread.currentThread().getName())) { if (activity == null){ return; } Toast.makeText(activity, text, Toast.LENGTH_SHORT).show(); } else { activity.runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(activity, text, Toast.LENGTH_SHORT).show(); } }); } } /** * 显示土司的工具类,安全的工具类可以在任意线程里面显示 * @param activity * @param text * @param length 显示的时常 */ public static void show(final Activity activity, final CharSequence text, final int length) { if ("main".equalsIgnoreCase(Thread.currentThread().getName())) { Toast.makeText(activity, text, length).show(); } else { activity.runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(activity, text, length).show(); } }); } }}DensityUtils.java
public class DensityUtils { private DensityUtils() { /* cannot be instantiated */ throw new UnsupportedOperationException("cannot be instantiated"); } /** * dp转px * * @param context * @param val * @return */ public static int dp2px(Context context, float dpVal) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpVal, context.getResources().getDisplayMetrics()); } /** * sp转px * * @param context * @param val * @return */ public static int sp2px(Context context, float spVal) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, spVal, context.getResources().getDisplayMetrics()); } /** * px转dp * * @param context * @param pxVal * @return */ public static float px2dp(Context context, float pxVal) { final float scale = context.getResources().getDisplayMetrics().density; return (pxVal / scale); } /** * px转sp * * @param fontScale * @param pxVal * @return */ public static float px2sp(Context context, float pxVal) { return (pxVal / context.getResources().getDisplayMetrics().scaledDensity); } }SDCardUtils.java
public class SDCardUtils { private SDCardUtils() { /* cannot be instantiated */ throw new UnsupportedOperationException("cannot be instantiated"); } /** * 判断SDCard是否可用 * * @return */ public static boolean isSDCardEnable() { return Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED); } /** * 获取SD卡路径 * * @return */ public static String getSDCardPath() { return Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator; } /** * 获取SD卡的剩余容量 单位byte * * @return */ public static long getSDCardAllSize() { if (isSDCardEnable()) { StatFs stat = new StatFs(getSDCardPath()); // 获取空闲的数据块的数量 long availableBlocks = (long) stat.getAvailableBlocks() - 4; // 获取单个数据块的大小（byte） long freeBlocks = stat.getAvailableBlocks(); return freeBlocks * availableBlocks; } return 0; } /** * 获取指定路径所在空间的剩余可用容量字节数，单位byte * * @param filePath * @return 容量字节 SDCard可用空间，内部存储可用空间 */ public static long getFreeBytes(String filePath) { // 如果是sd卡的下的路径，则获取sd卡可用容量 if (filePath.startsWith(getSDCardPath())) { filePath = getSDCardPath(); } else {// 如果是内部存储的路径，则获取内存存储的可用容量 filePath = Environment.getDataDirectory().getAbsolutePath(); } StatFs stat = new StatFs(filePath); long availableBlocks = (long) stat.getAvailableBlocks() - 4; return stat.getBlockSize() * availableBlocks; } /** * 获取系统存储路径 * * @return */ public static String getRootDirectoryPath() { return Environment.getRootDirectory().getAbsolutePath(); } }屏幕辅助类ScreenUtils.java
public class ScreenUtils { private ScreenUtils() { /* cannot be instantiated */ throw new UnsupportedOperationException("cannot be instantiated"); } /** * 获得屏幕高度 * * @param context * @return */ public static int getScreenWidth(Context context) { WindowManager wm = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); DisplayMetrics outMetrics = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(outMetrics); return outMetrics.widthPixels; } /** * 获得屏幕宽度 * * @param context * @return */ public static int getScreenHeight(Context context) { WindowManager wm = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); DisplayMetrics outMetrics = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(outMetrics); return outMetrics.heightPixels; } /** * 获得状态栏的高度 * * @param context * @return */ public static int getStatusHeight(Context context) { int statusHeight = -1; try { Class<?> clazz = Class.forName("com.android.internal.R$dimen"); Object object = clazz.newInstance(); int height = Integer.parseInt(clazz.getField("status_bar_height") .get(object).toString()); statusHeight = context.getResources().getDimensionPixelSize(height); } catch (Exception e) { e.printStackTrace(); } return statusHeight; } /** * 获取当前屏幕截图，包含状态栏 * * @param activity * @return */ public static Bitmap snapShotWithStatusBar(Activity activity) { View view = activity.getWindow().getDecorView(); view.setDrawingCacheEnabled(true); view.buildDrawingCache(); Bitmap bmp = view.getDrawingCache(); int width = getScreenWidth(activity); int height = getScreenHeight(activity); Bitmap bp = null; bp = Bitmap.createBitmap(bmp, 0, 0, width, height); view.destroyDrawingCache(); return bp; } /** * 获取当前屏幕截图，不包含状态栏 * * @param activity * @return */ public static Bitmap snapShotWithoutStatusBar(Activity activity) { View view = activity.getWindow().getDecorView(); view.setDrawingCacheEnabled(true); view.buildDrawingCache(); Bitmap bmp = view.getDrawingCache(); Rect frame = new Rect(); activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame); int statusBarHeight = frame.top; int width = getScreenWidth(activity); int height = getScreenHeight(activity); Bitmap bp = null; bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height - statusBarHeight); view.destroyDrawingCache(); return bp; } }AppUtils
public class AppUtils { private AppUtils() { /* cannot be instantiated */ throw new UnsupportedOperationException("cannot be instantiated"); } /** * 获取应用程序名称 */ public static String getAppName(Context context) { try { PackageManager packageManager = context.getPackageManager(); PackageInfo packageInfo = packageManager.getPackageInfo( context.getPackageName(), 0); int labelRes = packageInfo.applicationInfo.labelRes; return context.getResources().getString(labelRes); } catch (NameNotFoundException e) { e.printStackTrace(); } return null; } /** * [获取应用程序版本名称信息] * * @param context * @return 当前应用的版本名称 */ public static String getVersionName(Context context) { try { PackageManager packageManager = context.getPackageManager(); PackageInfo packageInfo = packageManager.getPackageInfo( context.getPackageName(), 0); return packageInfo.versionName; } catch (NameNotFoundException e) { e.printStackTrace(); } return null; } }NetUtils.java
public class NetUtils { public static final int NO_NETWORK = 0; public static final int NETWORK_WIFI = 1; public static final int NETWORK_MOBILE = 2; private NetUtils() { /* cannot be instantiated */ throw new UnsupportedOperationException("cannot be instantiated"); } /** * 判断网络是否连接 */ public static boolean isConnected(Context context) { ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (null != connectivity) { NetworkInfo info = connectivity.getActiveNetworkInfo(); if (null != info && info.isConnected()) { if (info.getState() == NetworkInfo.State.CONNECTED) { return true; } } } return false; } /** * 判断是否是wifi连接 */ public static boolean isWifi(Context context) { ConnectivityManager cm = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (cm == null) return false; return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI; } /** * 打开网络设置界面 */ public static void openSetting(Activity activity) { Intent intent = new Intent("/"); ComponentName cm = new ComponentName("com.android.settings", "com.android.settings.WirelessSettings"); intent.setComponent(cm); intent.setAction("android.intent.action.VIEW"); activity.startActivityForResult(intent, 0); } /** * 检查网络连接 * * @param context * @return 0为无网络状态，1为wifi连接状态，2为移动网络连接状态 */ public static int checkNetwork(Context context) { if (context == null) { return NETWORK_WIFI; } ConnectivityManager cm = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo wifi = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI); if (wifi != null && wifi.isConnected()) { return NETWORK_WIFI; } NetworkInfo mobile = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if (mobile != null && mobile.isConnected()) { return NETWORK_MOBILE; } return NO_NETWORK; }}其他
ToolUtils.java
/** * 判断输入文本是否含有emoji * @param string * @return */public static boolean isEmoji(String string) { Pattern p = Pattern.compile("[\ud83c\udc00-\ud83c\udfff]|[\ud83d\udc00-\ud83d\udfff]|[\u2600-\u27ff]", Pattern.UNICODE_CASE | Pattern.CASE_INSENSITIVE); Matcher m = p.matcher(string); return m.find();}/*public static boolean isEmoji1(String string) { Pattern p = Pattern.compile("/[\u1F60-\u1F64]|[\u2702-\u27B0]|[\u1F68-\u1F6C]|[\u1F30-\u1F70]|[\u2600-\u26ff]/g"); Matcher m = p.matcher(string); return m.matches();}*//** * 判断是不是emoji字符 * @param codePoint * @return */private static boolean isEmojiCharacter(char codePoint) { return (codePoint == 0x0) || (codePoint == 0x9) || (codePoint == 0xA) || (codePoint == 0xD) || ((codePoint >= 0x20) && (codePoint <= 0xD7FF)) || ((codePoint >= 0xE000) && (codePoint <= 0xFFFD)) || ((codePoint >= 0x10000) && (codePoint <= 0x10FFFF));}/** * 过滤emoji 或者 其他非文字类型的字符 * @param source * @return */public static String filterEmoji(String source) { if (!isEmoji(source)) { return source;//如果不包含，直接返回 } //到这里铁定包含 StringBuilder buf = null; int len = source.length(); for (int i = 0; i < len; i++) { char codePoint = source.charAt(i); if (isEmojiCharacter(codePoint)) { if (buf == null) { buf = new StringBuilder(source.length()); } buf.append(codePoint); } else { } } if (buf == null) { return source;//如果没有找到 emoji表情，则返回源字符串 } else { if (buf.length() == len) {//这里的意义在于尽可能少的toString，因为会重新生成字符串 buf = null; return source; } else { return buf.toString(); } }} /** * 显示一个进度条 * @param activity * @param customIndeterminateDrawable 自定义进度条加载图片 * @return */public static ProgressBar createProgressBar(Activity activity, Drawable customIndeterminateDrawable) { // activity根部的ViewGroup，其实是一个FrameLayout FrameLayout rootContainer = (FrameLayout) activity.findViewById(android.R.id.content); // 给progressbar准备一个FrameLayout的LayoutParams FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams( ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); // 设置对其方式为：屏幕居中对其 lp.gravity = Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL; ProgressBar progressBar = new ProgressBar(activity); progressBar.setVisibility(View.GONE); progressBar.setLayoutParams(lp); // 自定义小菊花 if (customIndeterminateDrawable != null) { progressBar.setIndeterminateDrawable(customIndeterminateDrawable); } // 将菊花添加到FrameLayout中 rootContainer.addView(progressBar); return progressBar;}权限相关 PermissionUtils.java
public static boolean checkPermission(String[] permissions,Activity activity,int requestCode){ List<String> needRequestPermissionList = ToolUtil.findDeniedPermissions(permissions,activity); if (needRequestPermissionList != null && needRequestPermissionList.size() > 0){ ActivityCompat.requestPermissions(activity,needRequestPermissionList.toArray (new String[needRequestPermissionList.size()]), PERMISSION_REQUESTCODE); return true; } else return false;}public static boolean checkPermission(String[] permissions,Activity activity){ List<String> needRequestPermissionList = ToolUtil.findDeniedPermissions(permissions,activity); if (needRequestPermissionList != null && needRequestPermissionList.size() > 0){ ActivityCompat.requestPermissions(activity,needRequestPermissionList.toArray (new String[needRequestPermissionList.size()]), PERMISSION_REQUESTCODE); return true; } else return false;}/** *获取权限集中需要申请权限的列表 * @param permissions * @param activity * @return */public static List<String> findDeniedPermissions(String[] permissions,Activity activity) { List<String> needRequestPermissionList = new ArrayList<>(); for (String perm : permissions){ if (ContextCompat.checkSelfPermission(TApplication.getContext(),perm) != PackageManager.PERMISSION_GRANTED){ needRequestPermissionList.add(perm); }else{ if (ActivityCompat.shouldShowRequestPermissionRationale(activity,perm)){ needRequestPermissionList.add(perm); } } } return needRequestPermissionList;}/** * 检测是否说有的权限都有了 * @param grantResults * @return */public static boolean verifyPermission(int[] grantResults){ for (int result : grantResults){ if (result != PackageManager.PERMISSION_GRANTED){ return false; } } return true;}public static void showMissingPermissionDialog(final Activity activity) { android.support.v7.app.AlertDialog.Builder builder = new android.support.v7.app.AlertDialog.Builder(activity); builder.setTitle(R.string.notifyMsg); builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { activity.finish(); } }); builder.setPositiveButton(R.string.setting, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { startAppSetting(activity); } }); builder.setCancelable(false); builder.show();}public static void startAppSetting(Activity activity) { Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); intent.setData(Uri.parse("package:"+activity.getPackageName())); activity.startActivity(intent);} 0 0
- Android Util工具类的封装
- android 的Util工具类
- SharedPreferences util工具类封装
- android上的Util,工具类
- 一个封装 android.util.Log 的Log类
- android的UI工具类封装
- Android 封装http请求的工具类
- Android 封装http请求的工具类
- Android 封装http请求的工具类
- Android 封装http请求的工具类
- Android greenDAO的使用，工具类封装
- Android Okhttp工具类的封装
- Util工具类 URLConnectionUtil - 20141211 封装为访问网络框架
- 封装的工具类
- Android封装SharedPreferences工具类
- Android常见工具类封装
- Android 常见工具类封装
- Android 常见工具类封装
- 【原创】C++ 动态数组 vector 详解
- Java 时间转换
- process.waitFor() 返回值含义
- .net中跨数据库遇到的问题 分布式
- 正则表达式
- Android Util工具类的封装
- C语言排序算法实现
- 中国格地区的DNS地址
- 分布式tensorflow
- spring学习之@ModelAttribute运用详解
- 使用Beef劫持客户端浏览器并进一步使用Beef+msf拿客户端shell
- 移动硬盘安装CentOS 7+Ubuntu 16.04.2整体过程记录
- python 360 社区 监控 爬虫 in not in 问题
- [BZOJ 2216][Poi2011]Lightning Conductor：DP决策单调性
