随笔分类 -  217.Android之常用工具类

摘要：import android.app.ActivityManager; import android.app.Service; import android.content.Context; import java.util.List; /** * Created by Administrator on 2016/11/23 0023. * 判断服务是否运行 */ public class... 阅读全文

摘要：import android.content.Context; import android.os.Handler; import android.os.Looper; import android.widget.Toast; public class ToastUtils { //sHandler维护的是主线程的消息队列 private static Handler sHa... 阅读全文

摘要：import android.os.Handler; import android.os.Looper; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; public class ThreadUtils { private static Handler sHan... 阅读全文

摘要：需要导入Base64.jar包 import java.io.ByteArrayOutputStream; import java.security.Key; import java.security.KeyFactory; import java.security.KeyPair; import java.security.KeyPairGenerator; import java.secu... 阅读全文

摘要：需要导入Base64.jar包 import java.io.IOException; import java.security.SecureRandom; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax 阅读全文

摘要：需要导入Zxing.jar包 import android.graphics.Bitmap; import com.google.zxing.BarcodeFormat; import com.google.zxing.MultiFormatWriter; import com.google.zxing.WriterException; import com.google.zxing.com... 阅读全文

摘要：import java.io.UnsupportedEncodingException; import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; ///** AES对称加密解密类 **/ public class Aes { // /** 算法/模式/填充 **/ private static fi... 阅读全文

摘要：package com.jcf.utilsdemo; import android.graphics.Bitmap; import android.media.ThumbnailUtils; public class ViedoUtil { /** * 获取视频的缩略图 * 先通过ThumbnailUtils来创建一个视频的缩略图，然后再利用Thumbn... 阅读全文

摘要：import android.content.Context; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.os.... 阅读全文

摘要：import android.app.Activity; import android.app.Dialog; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.BitmapD... 阅读全文

摘要：/需要导入第三方jar包pinyin4j.jar import net.sourceforge.pinyin4j.PinyinHelper; import java.util.regex.Matcher; import java.util.regex.Pattern; public class StringUtils { protected static final String ... 阅读全文

摘要：import java.security.MessageDigest; /** * 提供SHA加密 */ public class SHAUtil { // 进行SHA-1加密 public static String SHAEncode(String message) { String resultString = null; try { ... 阅读全文

摘要：import android.app.Activity; import android.app.Service; import android.content.Context; import android.os.Vibrator; /** * 震动工具类 * @where */ public class ShockUtil { /** * 时长震动 * @par... 阅读全文

摘要：import android.os.Environment; import android.os.StatFs; public class SdCardUtils { public static boolean hasSdcard() { String state = Environment.getExternalStorageState(); if (state... 阅读全文

摘要：package com.jcf.utilsdemo; import android.content.Context; import android.content.res.Resources; public class ResourceUtils { public static int getDrawableId(Context context, String name) { ... 阅读全文

摘要：import android.app.Activity; import android.graphics.Bitmap; import android.graphics.Rect; import android.view.View; import java.io.FileNotFoundException; import java.io.FileOutputStream; import jav... 阅读全文

摘要：import android.media.MediaRecorder; import android.os.Environment; import java.io.File; import java.io.IOException; public class RecoderUtils { private final MediaRecorder recorde = new MediaRe... 阅读全文

摘要：import android.app.Activity; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.net.ConnectivityManager; import android.net.NetworkInf... 阅读全文

摘要：import android.app.Activity; import android.content.Context; import android.graphics.Rect; import android.util.DisplayMetrics; public class DisplayUtils { /** * 根据手机的分辨率从 dp 的单位 转成为 px(像素) ... 阅读全文

摘要：import android.app.ActivityManager; import android.app.ActivityManager.RunningTaskInfo; import android.content.Context; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import... 阅读全文