android文件和图片的处理工具类(一)

  1 package com.gzcivil.utils;
  2 
  3 import java.io.File;
  4 import java.io.FileInputStream;
  5 import java.io.FileOutputStream;
  6 import java.io.InputStream;
  7 import java.math.BigDecimal;
  8 import java.text.DecimalFormat;
  9 import java.util.List;
 10 import java.util.UUID;
 11 
 12 import android.app.ActivityManager;
 13 import android.content.ActivityNotFoundException;
 14 import android.content.Context;
 15 import android.content.Intent;
 16 import android.content.pm.PackageInfo;
 17 import android.content.pm.PackageManager.NameNotFoundException;
 18 import android.graphics.Bitmap;
 19 import android.graphics.BitmapFactory;
 20 import android.graphics.drawable.BitmapDrawable;
 21 import android.graphics.drawable.Drawable;
 22 import android.media.ThumbnailUtils;
 23 import android.net.Uri;
 24 import android.os.Environment;
 25 import android.telephony.TelephonyManager;
 26 import android.view.View;
 27 import android.view.ViewGroup;
 28 import android.widget.ImageView;
 29 import android.widget.ListAdapter;
 30 import android.widget.ListView;
 31 
 32 import com.gzcivil.R;
 33 import com.igexin.sdk.PushManager;
 34 
 35 public class CommonUtil {
 36 
 37     /**
 38      * 回收ImageView图片
 39      * 
 40      * @param imageView
 41      */
 42     public static synchronized void recycleImage(ImageView imageView) {
 43         if (imageView == null)
 44             return;
 45         Drawable drawable = imageView.getDrawable();
 46         recycleDrawable(drawable);
 47         imageView.setImageBitmap(null);
 48     }
 49 
 50     /**
 51      * 回收View背景图片
 52      * 
 53      * @param view
 54      */
 55     @SuppressWarnings("deprecation")
 56     public static synchronized void recycleBackground(View view) {
 57         if (view == null)
 58             return;
 59         Drawable drawable = view.getBackground();
 60         recycleDrawable(drawable);
 61         view.setBackgroundDrawable(null);
 62     }
 63 
 64     /**
 65      * 回收方法
 66      */
 67     private static void recycleDrawable(Drawable drawable) {
 68         if (drawable != null && drawable instanceof BitmapDrawable) {
 69             Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
 70             if (bitmap != null && !bitmap.isRecycled()) {
 71                 LogUtils.e(SysUtils.LOG_TAG, "图片回收了");
 72                 bitmap.recycle();
 73             }
 74         }
 75     }
 76 
 77     public static double getDirSize(File file) {
 78         // 判断文件是否存在
 79         if (file.exists()) {
 80             // 如果是目录则递归计算其内容的总大小
 81             if (file.isDirectory()) {
 82                 File[] children = file.listFiles();
 83                 double size = 0;
 84                 for (File f : children)
 85                     size += getDirSize(f);
 86                 return size;
 87             } else {// 如果是文件则直接返回其大小,以“兆”为单位
 88                 return file.length();
 89             }
 90         } else {
 91             return 0.0;
 92         }
 93     }
 94 
 95     public static String FormetFileSize(double fileS) {// 转换文件大小
 96         DecimalFormat df = new DecimalFormat("#.00");
 97         String fileSizeString = "";
 98         if (fileS < 1024) {
 99             fileSizeString = "0.0" + "B";
100         } else if (fileS < 1048576) {
101             fileSizeString = df.format((double) fileS / 1024) + "K";
102         } else if (fileS < 1073741824) {
103             fileSizeString = df.format((double) fileS / 1048576) + "M";
104         } else {
105             fileSizeString = df.format((double) fileS / 1073741824) + "G";
106         }
107         return fileSizeString;
108     }
109 
110     /*
111      * Java文件操作 获取文件扩展名
112      */
113     public static String getExtensionName(String filename) {
114         if ((filename != null) && (filename.length() > 0)) {
115             int dot = filename.lastIndexOf('.');
116             if ((dot > -1) && (dot < (filename.length() - 1))) {
117                 return filename.substring(dot + 1);
118             }
119         }
120         return filename;
121     }
122 
123     /*
124      * Java文件操作 获取不带扩展名的文件名
125      */
126     public static String getFileNameNoEx(String filename) {
127         if ((filename != null) && (filename.length() > 0)) {
128             int dot = filename.lastIndexOf('.');
129             if ((dot > -1) && (dot < (filename.length()))) {
130                 return filename.substring(0, dot);
131             }
132         }
133         return filename;
134     }
135 
136     public static void setListViewHeightBasedOnChildren(ListView listView) {
137         ListAdapter listAdapter = listView.getAdapter();
138         if (listAdapter == null) {
139             return;
140         }
141 
142         int totalHeight = 0;
143         for (int i = 0; i < listAdapter.getCount(); i++) {
144             View listItem = listAdapter.getView(i, null, listView);
145             listItem.measure(0, 0);
146             totalHeight += listItem.getMeasuredHeight();
147         }
148 
149         ViewGroup.LayoutParams params = listView.getLayoutParams();
150         params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
151         listView.setLayoutParams(params);
152     }
153 
154     /**
155      * 检查是否存在SDCard
156      * 
157      * @return
158      */
159     public static boolean hasSdcard() {
160         String state = Environment.getExternalStorageState();
161         if (state.equals(Environment.MEDIA_MOUNTED)) {
162             return true;
163         } else {
164             return false;
165         }
166     }
167 
168     /**
169      * 四舍五入
170      * 
171      * @param v
172      * @param scale
173      *            多少位
174      * @return
175      */
176     public static double decimalFormat(Float v, int scale) {
177         if (scale < 0) {
178             throw new IllegalArgumentException("The scale must be a positive integer or zero");
179         }
180         BigDecimal b = new BigDecimal(Double.toString(v));
181         BigDecimal one = new BigDecimal("1");
182         return b.divide(one, scale, BigDecimal.ROUND_HALF_UP).floatValue();
183     }
184 
185     // 获取个推CID
186     public static String GetCid(Context context) {
187         return PushManager.getInstance().getClientid(context);
188     }
189 
190     // 获取机器码
191     public static String GetMachineCode(Context context) {
192         String code = "";
193         final TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
194         final String tmDevice, tmSerial, androidId;
195         tmDevice = "" + tm.getDeviceId();
196         tmSerial = "" + tm.getSimSerialNumber();
197         androidId = "" + android.provider.Settings.Secure.getString(context.getContentResolver(), android.provider.Settings.Secure.ANDROID_ID);
198         UUID deviceUuid = new UUID(androidId.hashCode(), ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
199         code = deviceUuid.toString();
200         return code;
201     }
202 
203     /**
204      * 派单状态
205      * 
206      * @param param
207      * @return
208      */
209     public static String getCheetStatus(String param) {
210         if (param == null || param.equals("")) {
211             return "";
212         }
213         String Status = "";
214         if (param == "00" || param.equals("00")) {
215             Status = "<font color='#e53c41'>未接</font>";
216         } else if (param == "01" || param.equals("01")) {
217             Status = "<font color='#e53c41'>执行中</font>";
218         } else if (param == "02" || param.equals("02")) {
219             Status = "<font color='#2ab823'>完成</font>";
220         } else if (param == "08" || param.equals("08")) {
221             Status = "<font color='#f13f1b'>终止</font>";
222         } else if (param == "09" || param.equals("09")) {
223             Status = "<font color='#f13f1b'>拒收</font>";
224         } else {
225             Status = "";
226         }
227         return Status;
228     }
229 
230     /**
231      * 会议通知状态
232      * 
233      * @param param
234      * @return
235      */
236     public static String getMeetStatus(String param) {
237         String Status = "";
238         if (param == null || param.equals("")) {
239             return Status;
240         }
241         if (param.equals("1")) {
242             Status = "<font color='#e53c41'>未接</font>";
243         } else if (param.equals("2")) {
244             Status = "<font color='#2ab823'>已同意</font>";
245         } else if (param.equals("3")) {
246             Status = "<font color='#f13f1b'>请假</font>";
247         }
248         return Status;
249     }
250 
251     /**
252      * 检测应用程序 是否前台运行
253      * 
254      * @param context
255      * @return
256      */
257     public static boolean isServiceStarted(Context context) {
258         boolean isStarted = false;
259         try {
260             ActivityManager mActivityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
261             int intGetTastCounter = 1000;
262             List<ActivityManager.RunningServiceInfo> mRunningService = mActivityManager.getRunningServices(intGetTastCounter);
263             for (ActivityManager.RunningServiceInfo amService : mRunningService) {
264                 if (0 == amService.service.getPackageName().compareTo("com.msd.terminal")) {
265                     isStarted = true;
266                     break;
267                 }
268             }
269         } catch (SecurityException e) {
270             e.printStackTrace();
271         }
272         return isStarted;
273     }
274 
275     public static boolean isServiceRunning(Context mContext, String className) {
276         boolean isRunning = false;
277         ActivityManager activityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
278         List<ActivityManager.RunningServiceInfo> serviceList = activityManager.getRunningServices(30);
279         if (!(serviceList.size() > 0)) {
280             return false;
281         }
282         for (int i = 0; i < serviceList.size(); i++) {
283             if (serviceList.get(i).service.getClassName().equals(className) == true) {
284                 isRunning = true;
285                 break;
286             }
287         }
288         return isRunning;
289     }
290 
291     // 获取版本号
292     public static String getVersion(Context context) {
293         try {
294             PackageInfo pi = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
295             return pi.versionName;
296         } catch (NameNotFoundException e) {
297             e.printStackTrace();
298             return context.getString(R.string.version_unknown);
299         }
300     }
301 
302     /** 保存方法 */
303     public static boolean saveBigImgToSmall(String bigImgPath, String smallImgPath, String smallImgName, int min) {
304 
305         boolean flag = false;
306         try {
307             File lFile = new File(bigImgPath);
308             if (lFile.exists() && lFile.isFile()) {
309                 InputStream is = new FileInputStream(bigImgPath);
310                 Bitmap bitmap = BitmapFactory.decodeStream(is, null, getBitmapOption());
311                 int w = bitmap.getWidth();
312                 int h = bitmap.getHeight();
313                 LogUtils.e(SysUtils.LOG_TAG, "压缩前：w = " + w + ", h = " + h);
314                 if (min < 200) {
315                     min = 200;
316                 }
317                 if (w > h) {
318                     w = w * min / h;
319                     h = min;
320                 } else {
321                     h = h * min / w;
322                     w = min;
323                 }
324                 LogUtils.e(SysUtils.LOG_TAG, "压缩后：w = " + w + ", h = " + h);
325                 // 压缩原图为小图显示
326                 bitmap = ThumbnailUtils.extractThumbnail(bitmap, w, h, ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
327                 File f = new File(smallImgPath);
328                 if (f.exists())
329                     f.delete();
330                 FileOutputStream out = new FileOutputStream(f);
331                 flag = bitmap.compress(Bitmap.CompressFormat.PNG, 90, out);
332                 out.flush();
333                 out.close();
334             }
335         } catch (Exception e) {
336             e.printStackTrace();
337         }
338         return flag;
339     }
340 
341     /**
342      * 获取Bitmap的读取参数
343      */
344     public static final BitmapFactory.Options getBitmapOption() {
345         BitmapFactory.Options opt = new BitmapFactory.Options();
346         opt.inPreferredConfig = Bitmap.Config.RGB_565;
347         opt.inPurgeable = true;
348         opt.inInputShareable = true;
349         return opt;
350     }
351 
352     public static void openFile(Context context, File file) {
353         try {
354             Intent intent = new Intent();
355             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
356             // 设置intent的Action属性
357             intent.setAction(Intent.ACTION_VIEW);
358             // 获取文件file的MIME类型
359             String type = getMIMEType(file);
360             // 设置intent的data和Type属性。
361             intent.setDataAndType(Uri.fromFile(file), type);
362             // 跳转
363             context.startActivity(intent);
364             // Intent.createChooser(intent, "请选择对应的软件打开该附件！");
365         } catch (ActivityNotFoundException e) {
366             // TODO: handle exception
367             MyToast.showToast(context, "sorry附件不能打开，请下载相关软件！", 0);
368         }
369     }
370 
371     private static String getMIMEType(File file) {
372 
373         String type = "*/*";
374         String fName = file.getName();
375         // 获取后缀名前的分隔符"."在fName中的位置。
376         int dotIndex = fName.lastIndexOf(".");
377         if (dotIndex < 0) {
378             return type;
379         }
380         /* 获取文件的后缀名 */
381         String end = fName.substring(dotIndex, fName.length()).toLowerCase();
382         if (end == "")
383             return type;
384         // 在MIME和文件类型的匹配表中找到对应的MIME类型。
385         for (int i = 0; i < MIME_MapTable.length; i++) {
386 
387             if (end.equals(MIME_MapTable[i][0]))
388                 type = MIME_MapTable[i][1];
389         }
390         return type;
391     }
392 
393     // 可以自己随意添加
394     private static String[][] MIME_MapTable = {
395             // {后缀名，MIME类型}
396             { ".3gp", "video/3gpp" }, { ".apk", "application/vnd.android.package-archive" }, { ".asf", "video/x-ms-asf" }, { ".avi", "video/x-msvideo" }, { ".bin", "application/octet-stream" }, { ".bmp", "image/bmp" }, { ".c", "text/plain" }, { ".class", "application/octet-stream" }, { ".conf", "text/plain" }, { ".cpp", "text/plain" }, { ".doc", "application/msword" }, { ".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document" }, { ".xls", "application/vnd.ms-excel" }, { ".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" }, { ".exe", "application/octet-stream" }, { ".gif", "image/gif" }, { ".gtar", "application/x-gtar" }, { ".gz", "application/x-gzip" }, { ".h", "text/plain" }, { ".htm", "text/html" }, { ".html", "text/html" },
397             { ".jar", "application/java-archive" }, { ".java", "text/plain" }, { ".jpeg", "image/jpeg" }, { ".jpg", "image/jpeg" }, { ".js", "application/x-javascript" }, { ".log", "text/plain" }, { ".m3u", "audio/x-mpegurl" }, { ".m4a", "audio/mp4a-latm" }, { ".m4b", "audio/mp4a-latm" }, { ".m4p", "audio/mp4a-latm" }, { ".m4u", "video/vnd.mpegurl" }, { ".m4v", "video/x-m4v" }, { ".mov", "video/quicktime" }, { ".mp2", "audio/x-mpeg" }, { ".mp3", "audio/x-mpeg" }, { ".mp4", "video/mp4" }, { ".mpc", "application/vnd.mpohun.certificate" }, { ".mpe", "video/mpeg" }, { ".mpeg", "video/mpeg" }, { ".mpg", "video/mpeg" }, { ".mpg4", "video/mp4" }, { ".mpga", "audio/mpeg" }, { ".msg", "application/vnd.ms-outlook" }, { ".ogg", "audio/ogg" }, { ".pdf", "application/pdf" }, { ".png", "image/png" },
398             { ".pps", "application/vnd.ms-powerpoint" }, { ".ppt", "application/vnd.ms-powerpoint" }, { ".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation" }, { ".prop", "text/plain" }, { ".rc", "text/plain" }, { ".rmvb", "audio/x-pn-realaudio" }, { ".rtf", "application/rtf" }, { ".sh", "text/plain" }, { ".tar", "application/x-tar" }, { ".tgz", "application/x-compressed" }, { ".txt", "text/plain" }, { ".wav", "audio/x-wav" }, { ".wma", "audio/x-ms-wma" }, { ".wmv", "audio/x-ms-wmv" }, { ".wps", "application/vnd.ms-works" }, { ".xml", "text/plain" }, { ".z", "application/x-compress" }, { ".zip", "application/x-zip-compressed" }, { "", "*/*" } };
399 
400 }