DownLoaderTask.java

[java] view plain copy
  1. packagecom.johnny.testzipanddownload;
  3. importjava.io.BufferedInputStream;
  4. importjava.io.BufferedOutputStream;
  5. importjava.io.File;
  6. importjava.io.FileNotFoundException;
  7. importjava.io.FileOutputStream;
  8. importjava.io.IOException;
  9. importjava.io.InputStream;
  10. importjava.io.OutputStream;
  11. importjava.net.MalformedURLException;
  12. importjava.net.URL;
  13. importjava.net.URLConnection;
  15. importandroid.app.ProgressDialog;
  16. importandroid.content.Context;
  17. importandroid.content.DialogInterface;
  18. importandroid.content.DialogInterface.OnCancelListener;
  19. importandroid.os.AsyncTask;
  20. importandroid.util.Log;
  22. publicclassDownLoaderTaskextendsAsyncTask<Void,Integer,Long>{
  23. privatefinalStringTAG="DownLoaderTask";
  24. privateURLmUrl;
  25. privateFilemFile;
  26. privateProgressDialogmDialog;
  27. privateintmProgress=0;
  28. privateProgressReportingOutputStreammOutputStream;
  29. privateContextmContext;
  30. publicDownLoaderTask(Stringurl,Stringout,Contextcontext){
  31. super();
  32. if(context!=null){
  33. mDialog=newProgressDialog(context);
  34. mContext=context;
  35. }
  36. else{
  37. mDialog=null;
  38. }
  40. try{
  41. mUrl=newURL(url);
  42. StringfileName=newFile(mUrl.getFile()).getName();
  43. mFile=newFile(out,fileName);
  44. Log.d(TAG,"out="+out+",name="+fileName+",mUrl.getFile()="+mUrl.getFile());
  45. }catch(MalformedURLExceptione){
  46. //TODOAuto-generatedcatchblock
  47. e.printStackTrace();
  48. }
  50. }
  52. @Override
  53. protectedvoidonPreExecute(){
  54. //TODOAuto-generatedmethodstub
  55. //super.onPreExecute();
  56. if(mDialog!=null){
  57. mDialog.setTitle("Downloading...");
  58. mDialog.setMessage(mFile.getName());
  59. mDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
  60. mDialog.setOnCancelListener(newOnCancelListener(){
  62. @Override
  63. publicvoidonCancel(DialogInterfacedialog){
  64. //TODOAuto-generatedmethodstub
  65. cancel(true);
  66. }
  67. });
  68. mDialog.show();
  69. }
  70. }
  72. @Override
  73. protectedLongdoInBackground(Void...params){
  74. //TODOAuto-generatedmethodstub
  75. returndownload();
  76. }
  78. @Override
  79. protectedvoidonProgressUpdate(Integer...values){
  80. //TODOAuto-generatedmethodstub
  81. //super.onProgressUpdate(values);
  82. if(mDialog==null)
  83. return;
  84. if(values.length>1){
  85. intcontentLength=values[1];
  86. if(contentLength==-1){
  87. mDialog.setIndeterminate(true);
  88. }
  89. else{
  90. mDialog.setMax(contentLength);
  91. }
  92. }
  93. else{
  94. mDialog.setProgress(values[0].intValue());
  95. }
  96. }
  98. @Override
  99. protectedvoidonPostExecute(Longresult){
  100. //TODOAuto-generatedmethodstub
  101. //super.onPostExecute(result);
  102. if(mDialog!=null&&mDialog.isShowing()){
  103. mDialog.dismiss();
  104. }
  105. if(isCancelled())
  106. return;
  107. ((MainActivity)mContext).showUnzipDialog();
  108. }
  110. privatelongdownload(){
  111. URLConnectionconnection=null;
  112. intbytesCopied=0;
  113. try{
  114. connection=mUrl.openConnection();
  115. intlength=connection.getContentLength();
  116. if(mFile.exists()&&length==mFile.length()){
  117. Log.d(TAG,"file"+mFile.getName()+"alreadyexits!!");
  118. return0l;
  119. }
  120. mOutputStream=newProgressReportingOutputStream(mFile);
  121. publishProgress(0,length);
  122. bytesCopied=copy(connection.getInputStream(),mOutputStream);
  123. if(bytesCopied!=length&&length!=-1){
  124. Log.e(TAG,"DownloadincompletebytesCopied="+bytesCopied+",length"+length);
  125. }
  126. mOutputStream.close();
  127. }catch(IOExceptione){
  128. //TODOAuto-generatedcatchblock
  129. e.printStackTrace();
  130. }
  131. returnbytesCopied;
  132. }
  133. privateintcopy(InputStreaminput,OutputStreamoutput){
  134. byte[]buffer=newbyte[1024*8];
  135. BufferedInputStreamin=newBufferedInputStream(input,1024*8);
  136. BufferedOutputStreamout=newBufferedOutputStream(output,1024*8);
  137. intcount=0,n=0;
  138. try{
  139. while((n=in.read(buffer,0,1024*8))!=-1){
  140. out.write(buffer,0,n);
  141. count+=n;
  142. }
  143. out.flush();
  144. }catch(IOExceptione){
  145. //TODOAuto-generatedcatchblock
  146. e.printStackTrace();
  147. }finally{
  148. try{
  149. out.close();
  150. }catch(IOExceptione){
  151. //TODOAuto-generatedcatchblock
  152. e.printStackTrace();
  153. }
  154. try{
  155. in.close();
  156. }catch(IOExceptione){
  157. //TODOAuto-generatedcatchblock
  158. e.printStackTrace();
  159. }
  160. }
  161. returncount;
  162. }
  163. privatefinalclassProgressReportingOutputStreamextendsFileOutputStream{
  165. publicProgressReportingOutputStream(Filefile)
  166. throwsFileNotFoundException{
  167. super(file);
  168. //TODOAuto-generatedconstructorstub
  169. }
  171. @Override
  172. publicvoidwrite(byte[]buffer,intbyteOffset,intbyteCount)
  173. throwsIOException{
  174. //TODOAuto-generatedmethodstub
  175. super.write(buffer,byteOffset,byteCount);
  176. mProgress+=byteCount;
  177. publishProgress(mProgress);
  178. }
  180. }
  181. }

解压：

ZipExtractorTask .java

[java] view plain copy
  1. packagecom.johnny.testzipanddownload;
  3. importjava.io.BufferedInputStream;
  4. importjava.io.BufferedOutputStream;
  5. importjava.io.File;
  6. importjava.io.FileNotFoundException;
  7. importjava.io.FileOutputStream;
  8. importjava.io.IOException;
  9. importjava.io.InputStream;
  10. importjava.io.OutputStream;
  11. importjava.util.Enumeration;
  12. importjava.util.zip.ZipEntry;
  13. importjava.util.zip.ZipException;
  14. importjava.util.zip.ZipFile;
  16. importandroid.app.ProgressDialog;
  17. importandroid.content.Context;
  18. importandroid.content.DialogInterface;
  19. importandroid.content.DialogInterface.OnCancelListener;
  20. importandroid.os.AsyncTask;
  21. importandroid.util.Log;
  23. publicclassZipExtractorTaskextendsAsyncTask<Void,Integer,Long>{
  24. privatefinalStringTAG="ZipExtractorTask";
  25. privatefinalFilemInput;
  26. privatefinalFilemOutput;
  27. privatefinalProgressDialogmDialog;
  28. privateintmProgress=0;
  29. privatefinalContextmContext;
  30. privatebooleanmReplaceAll;
  31. publicZipExtractorTask(Stringin,Stringout,Contextcontext,booleanreplaceAll){
  32. super();
  33. mInput=newFile(in);
  34. mOutput=newFile(out);
  35. if(!mOutput.exists()){
  36. if(!mOutput.mkdirs()){
  37. Log.e(TAG,"Failedtomakedirectories:"+mOutput.getAbsolutePath());
  38. }
  39. }
  40. if(context!=null){
  41. mDialog=newProgressDialog(context);
  42. }
  43. else{
  44. mDialog=null;
  45. }
  46. mContext=context;
  47. mReplaceAll=replaceAll;
  48. }
  49. @Override
  50. protectedLongdoInBackground(Void...params){
  51. //TODOAuto-generatedmethodstub
  52. returnunzip();
  53. }
  55. @Override
  56. protectedvoidonPostExecute(Longresult){
  57. //TODOAuto-generatedmethodstub
  58. //super.onPostExecute(result);
  59. if(mDialog!=null&&mDialog.isShowing()){
  60. mDialog.dismiss();
  61. }
  62. if(isCancelled())
  63. return;
  64. }
  65. @Override
  66. protectedvoidonPreExecute(){
  67. //TODOAuto-generatedmethodstub
  68. //super.onPreExecute();
  69. if(mDialog!=null){
  70. mDialog.setTitle("Extracting");
  71. mDialog.setMessage(mInput.getName());
  72. mDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
  73. mDialog.setOnCancelListener(newOnCancelListener(){
  75. @Override
  76. publicvoidonCancel(DialogInterfacedialog){
  77. //TODOAuto-generatedmethodstub
  78. cancel(true);
  79. }
  80. });
  81. mDialog.show();
  82. }
  83. }
  84. @Override
  85. protectedvoidonProgressUpdate(Integer...values){
  86. //TODOAuto-generatedmethodstub
  87. //super.onProgressUpdate(values);
  88. if(mDialog==null)
  89. return;
  90. if(values.length>1){
  91. intmax=values[1];
  92. mDialog.setMax(max);
  93. }
  94. else
  95. mDialog.setProgress(values[0].intValue());
  96. }
  97. privatelongunzip(){
  98. longextractedSize=0L;
  99. Enumeration<ZipEntry>entries;
  100. ZipFilezip=null;
  101. try{
  102. zip=newZipFile(mInput);
  103. longuncompressedSize=getOriginalSize(zip);
  104. publishProgress(0,(int)uncompressedSize);
  106. entries=(Enumeration<ZipEntry>)zip.entries();
  107. while(entries.hasMoreElements()){
  108. ZipEntryentry=entries.nextElement();
  109. if(entry.isDirectory()){
  110. continue;
  111. }
  112. Filedestination=newFile(mOutput,entry.getName());
  113. if(!destination.getParentFile().exists()){
  114. Log.e(TAG,"make="+destination.getParentFile().getAbsolutePath());
  115. destination.getParentFile().mkdirs();
  116. }
  117. if(destination.exists()&&mContext!=null&&!mReplaceAll){
  119. }
  120. ProgressReportingOutputStreamoutStream=newProgressReportingOutputStream(destination);
  121. extractedSize+=copy(zip.getInputStream(entry),outStream);
  122. outStream.close();
  123. }
  124. }catch(ZipExceptione){
  125. //TODOAuto-generatedcatchblock
  126. e.printStackTrace();
  127. }catch(IOExceptione){
  128. //TODOAuto-generatedcatchblock
  129. e.printStackTrace();
  130. }finally{
  131. try{
  132. zip.close();
  133. }catch(IOExceptione){
  134. //TODOAuto-generatedcatchblock
  135. e.printStackTrace();
  136. }
  137. }
  139. returnextractedSize;
  140. }
  142. privatelonggetOriginalSize(ZipFilefile){
  143. Enumeration<ZipEntry>entries=(Enumeration<ZipEntry>)file.entries();
  144. longoriginalSize=0l;
  145. while(entries.hasMoreElements()){
  146. ZipEntryentry=entries.nextElement();
  147. if(entry.getSize()>=0){
  148. originalSize+=entry.getSize();
  149. }
  150. }
  151. returnoriginalSize;
  152. }
  154. privateintcopy(InputStreaminput,OutputStreamoutput){
  155. byte[]buffer=newbyte[1024*8];
  156. BufferedInputStreamin=newBufferedInputStream(input,1024*8);
  157. BufferedOutputStreamout=newBufferedOutputStream(output,1024*8);
  158. intcount=0,n=0;
  159. try{
  160. while((n=in.read(buffer,0,1024*8))!=-1){
  161. out.write(buffer,0,n);
  162. count+=n;
  163. }
  164. out.flush();
  165. }catch(IOExceptione){
  166. //TODOAuto-generatedcatchblock
  167. e.printStackTrace();
  168. }finally{
  169. try{
  170. out.close();
  171. }catch(IOExceptione){
  172. //TODOAuto-generatedcatchblock
  173. e.printStackTrace();
  174. }
  175. try{
  176. in.close();
  177. }catch(IOExceptione){
  178. //TODOAuto-generatedcatchblock
  179. e.printStackTrace();
  180. }
  181. }
  182. returncount;
  183. }
  185. privatefinalclassProgressReportingOutputStreamextendsFileOutputStream{
  187. publicProgressReportingOutputStream(Filefile)
  188. throwsFileNotFoundException{
  189. super(file);
  190. //TODOAuto-generatedconstructorstub
  191. }
  193. @Override
  194. publicvoidwrite(byte[]buffer,intbyteOffset,intbyteCount)
  195. throwsIOException{
  196. //TODOAuto-generatedmethodstub
  197. super.write(buffer,byteOffset,byteCount);
  198. mProgress+=byteCount;
  199. publishProgress(mProgress);
  200. }
  202. }
  203. }


Main Activity

MainActivity.java

[java] view plain copy
  1. packagecom.johnny.testzipanddownload;
  3. importandroid.os.Bundle;
  4. importandroid.os.Environment;
  5. importandroid.app.Activity;
  6. importandroid.app.AlertDialog;
  7. importandroid.content.DialogInterface;
  8. importandroid.content.DialogInterface.OnClickListener;
  9. importandroid.util.Log;
  10. importandroid.view.Menu;
  12. publicclassMainActivityextendsActivity{
  14. privatefinalStringTAG="MainActivity";
  15. @Override
  16. protectedvoidonCreate(BundlesavedInstanceState){
  17. super.onCreate(savedInstanceState);
  18. setContentView(R.layout.activity_main);
  20. Log.d(TAG,"Environment.getExternalStorageDirectory()="+Environment.getExternalStorageDirectory());
  21. Log.d(TAG,"getCacheDir().getAbsolutePath()="+getCacheDir().getAbsolutePath());
  23. showDownLoadDialog();
  24. //doZipExtractorWork();
  25. //doDownLoadWork();
  26. }
  28. @Override
  29. publicbooleanonCreateOptionsMenu(Menumenu){
  30. //Inflatethemenu;thisaddsitemstotheactionbarifitispresent.
  31. getMenuInflater().inflate(R.menu.main,menu);
  32. returntrue;
  33. }
  35. privatevoidshowDownLoadDialog(){
  36. newAlertDialog.Builder(this).setTitle("确认")
  37. .setMessage("是否下载？")
  38. .setPositiveButton("是",newOnClickListener(){
  40. @Override
  41. publicvoidonClick(DialogInterfacedialog,intwhich){
  42. //TODOAuto-generatedmethodstub
  43. Log.d(TAG,"onClick1="+which);
  44. doDownLoadWork();
  45. }
  46. })
  47. .setNegativeButton("否",newOnClickListener(){
  49. @Override
  50. publicvoidonClick(DialogInterfacedialog,intwhich){
  51. //TODOAuto-generatedmethodstub
  52. Log.d(TAG,"onClick2="+which);
  53. }
  54. })
  55. .show();
  56. }
  58. publicvoidshowUnzipDialog(){
  59. newAlertDialog.Builder(this).setTitle("确认")
  60. .setMessage("是否解压？")
  61. .setPositiveButton("是",newOnClickListener(){
  63. @Override
  64. publicvoidonClick(DialogInterfacedialog,intwhich){
  65. //TODOAuto-generatedmethodstub
  66. Log.d(TAG,"onClick1="+which);
  67. doZipExtractorWork();
  68. }
  69. })
  70. .setNegativeButton("否",newOnClickListener(){
  72. @Override
  73. publicvoidonClick(DialogInterfacedialog,intwhich){
  74. //TODOAuto-generatedmethodstub
  75. Log.d(TAG,"onClick2="+which);
  76. }
  77. })
  78. .show();
  79. }
  81. publicvoiddoZipExtractorWork(){
  82. //ZipExtractorTasktask=newZipExtractorTask("/storage/usb3/system.zip","/storage/emulated/legacy/",this,true);
  83. ZipExtractorTasktask=newZipExtractorTask("/storage/emulated/legacy/testzip.zip","/storage/emulated/legacy/",this,true);
  84. task.execute();
  85. }
  87. privatevoiddoDownLoadWork(){
  88. DownLoaderTasktask=newDownLoaderTask("http://192.168.9.155/johnny/testzip.zip","/storage/emulated/legacy/",this);
  89. //DownLoaderTasktask=newDownLoaderTask("http://192.168.9.155/johnny/test.h264",getCacheDir().getAbsolutePath()+"/",this);
  90. task.execute();
  91. }
  93. }

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