download.java
-----------
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import android.app.Activity;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.sax.StartElementListener;
import android.util.Base64;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.LayoutInflater.Filter;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.Filterable;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TableLayout;
import android.widget.TextView;
public class MainActivity extends ListActivity
{
static Handler handler,handler2;
Thread thread;
static Thread thread2;
TableLayout tablLayout;
private static EfficientAdapter adap;
ProgressDialog pd;
public DBHelper db;
GridView gridview;
int total_row=0;
public final int DIALOG_DOWNLOAD_PROGRESS = 0;
private ProgressDialog mProgressDialog;
String FILE_NAME="";
static int Current_position=0;
private static String url = "d:/reader/shelf.json";
JSONArray contacts = null;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
db = new DBHelper(this);
gridview = (GridView) findViewById(R.id.MyGrid);
total_row=db.CountRow();
db.GetData();
thread2 = new Thread()
{
@Override
public void run()
{
handler2.sendEmptyMessage(0);
}
};
handler2 = new Handler()
{
@Override
public void handleMessage(Message msg)
{
FILE_NAME=Static_class.Select_URL.substring(Static_class.Select_URL.lastIndexOf('/') + 1);
Log.w("File Name....",""+FILE_NAME);
Log.w("url....",""+Static_class.Select_URL);
startDownload();
}
};
handler = new Handler()
{
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:
pd = ProgressDialog.show(MainActivity.this, null,
"Please Wait...", true, false);
pd.setCancelable(false);
break;
case 2:
pd.dismiss();
break;
case 3:
Display_magazine();
break;
}
}
};
thread = new Thread() {
@Override
public void run() {
try {
handler.sendEmptyMessage(1);
JSONParser jParser = new JSONParser();
JSONObject json = jParser.getJSONFromUrl(url);
contacts = json.getJSONArray("Magazine");
Static_class.Magazine_total =contacts.length();
Static_class.name = new String[Static_class.Magazine_total];
Static_class.title = new String[Static_class.Magazine_total];
Static_class.info = new String[Static_class.Magazine_total];
Static_class.date = new String[Static_class.Magazine_total];
Static_class.cover_image = new Bitmap[Static_class.Magazine_total];
Static_class.url = new String[Static_class.Magazine_total];
Static_class.id = new String[Static_class.Magazine_total];
Static_class.Button_text = new String[Static_class.Magazine_total];
// looping through All Contacts
for(int i = 0; i < contacts.length(); i++)
{
JSONObject c = contacts.getJSONObject(i);
Static_class.name[i]=c.getString("name");
Static_class.title[i]=c.getString("title");
Static_class.info[i]=c.getString("info");
Static_class.date[i]=c.getString("date");
Static_class.cover_image[i]=getBitmapFromURL(c.getString("cover"));
Static_class.url[i]=c.getString("url");
Static_class.id[i]=c.getString("product_id");
Static_class.Button_text[i]="Read";
int temp=0;
String temp_url="";
for (int j=0;j<total_row;j++)
{
if(Static_class.id[i].equals(Static_class.Stored_id[j]))
{
temp=1;
temp_url=""+Static_class.Stored_url[j];
}
}
if(temp == 1)
{
Static_class.Button_text[i]="Read";
Static_class.url[i]=temp_url;
}
else
{
Static_class.Button_text[i]="Download";
}
}
handler.sendEmptyMessage(2);
handler.sendEmptyMessage(3);
}
catch (Exception e)
{
handler.sendEmptyMessage(2);
e.printStackTrace();
}
}
};
thread.start();
}
public Bitmap getBitmapFromURL(String src)
{
try {
URL url = new URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
}
catch (IOException e)
{
e.printStackTrace();
return null;
}
}
public void Display_magazine()
{
adap = new EfficientAdapter(this);
setListAdapter(adap);
}
public void Show_magazine()
{
// Intent go = new Intent(this,Display.class);
// startActivity(go);
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
public static class EfficientAdapter extends BaseAdapter implements
Filterable {
private LayoutInflater mInflater;
private Context context;
public EfficientAdapter(Context context) {
mInflater = LayoutInflater.from(context);
this.context = context;
}
@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(
R.layout.adaptercontrol, null);
holder = new ViewHolder();
holder.txt_info = (TextView) convertView
.findViewById(R.id.textView_info);
holder.txt_title = (TextView) convertView
.findViewById(R.id.textView_title);
holder.txt_remove = (TextView) convertView
.findViewById(R.id.textView_remove);
holder.image = (ImageView) convertView
.findViewById(R.id.image);
holder.read = (Button) convertView
.findViewById(R.id.button_download);
holder.read.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Current_position=position;
if (Static_class.Button_text[position].equals("Download"))
{
Static_class.Select_URL=Static_class.url[position];
if (Static_class.First_Time_Thread == 0)
{
thread2.start();
Static_class.First_Time_Thread=1;
}
else
{
thread2.run();
}
}
else
{
}
}
});
holder.txt_remove.setOnClickListener(new OnClickListener()
{
private int pos = position;
@Override
public void onClick(View v)
{
}
});
// holder.next_image.setOnClickListener(new OnClickListener() {
// private int pos = position;
//
// public void onClick(View v) {
// Toast.makeText(context, "Click-" + String.valueOf(pos),
// Toast.LENGTH_SHORT).show();
// }
// });
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.image.setImageBitmap(Static_class.cover_image[position]);
holder.txt_info.setText("" + Static_class.info[position]);
holder.txt_title.setText("" + Static_class.title[position]);
holder.read.setText(""+ Static_class.Button_text[position]);
return convertView;
}
static class ViewHolder
{
TextView txt_title,txt_info,txt_remove;
ImageView image;
Button read;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public int getCount() {
return Static_class.Magazine_total;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public android.widget.Filter getFilter() {
// TODO Auto-generated method stub
return null;
}
}
private void delete_file()
{
File file = new File("/sdcard/"+FILE_NAME);
// String temp_name=Static_class.url[Current_position].replace(".hpub","");
// db.Insert(Static_class.id[Current_position],"file://"+Environment.getExternalStorageDirectory()+"/LivingNow/"+temp_name+"/index.html");
db.GetData();
db.Insert(Static_class.name[Current_position], Static_class.title[Current_position], Static_class.info[Current_position], Static_class.date[Current_position], Static_class.cover_image[Current_position],Static_class.url[Current_position],Static_class.id[Current_position]);
total_row=db.CountRow();
Static_class.Button_text[Current_position]="Read";
boolean deleted = file.delete();
Intent call = new Intent(this,MainActivity.class);
startActivity(call);
System.exit(0);
}
private void Decompress()
{
String zipFile = Environment.getExternalStorageDirectory() + "/"+FILE_NAME;
String unzipLocation = Environment.getExternalStorageDirectory() + "/reader/"+FILE_NAME;
Decompress d = new Decompress(zipFile, unzipLocation);
d.unzip();
}
public void startDownload()
{
new DownloadFileAsync().execute(Static_class.Select_URL);
}
@Override
protected Dialog onCreateDialog(int id)
{
switch (id) {
case DIALOG_DOWNLOAD_PROGRESS:
mProgressDialog = new ProgressDialog(this);
mProgressDialog.setMessage("Downloading Magazine..");
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
mProgressDialog.setCancelable(false);
mProgressDialog.show();
return mProgressDialog;
default:
return null;
}
}
class DownloadFileAsync extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute()
{
super.onPreExecute();
showDialog(DIALOG_DOWNLOAD_PROGRESS);
}
@Override
protected String doInBackground(String... aurl) {
int count;
try {
URL url = new URL(aurl[0]);
URLConnection conexion = url.openConnection();
conexion.connect();
int lenghtOfFile = conexion.getContentLength();
//Log.d("ANDRO_ASYNC", "Lenght of file: " + lenghtOfFile);
InputStream input = new BufferedInputStream(url.openStream());
OutputStream output = new FileOutputStream("/sdcard/"+FILE_NAME);
byte data[] = new byte[4096];
long total = 0;
while ((count = input.read(data)) != -1)
{
total += count;
publishProgress(""+(int)((total*100)/lenghtOfFile));
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
} catch (Exception e) {}
return null;
}
protected void onProgressUpdate(String... progress)
{
// Log.d("ANDRO_ASYNC",progress[0]);
mProgressDialog.setProgress(Integer.parseInt(progress[0]));
}
@Override
protected void onPostExecute(String unused)
{
Decompress();
dismissDialog(DIALOG_DOWNLOAD_PROGRESS);
}
}
public class Decompress {
private String _zipFile;
private String _location;
public Decompress(String zipFile, String location) {
_zipFile = zipFile;
_location = location;
_dirChecker("");
}
public void unzip() {
try {
FileInputStream fin = new FileInputStream(_zipFile);
ZipInputStream zin = new ZipInputStream(fin);
ZipEntry ze = null;
while ((ze = zin.getNextEntry()) != null)
{
Log.v("Decompress", "Unzipping " + ze.getName());
if(ze.isDirectory())
{
_dirChecker(ze.getName());
}
else
{
FileOutputStream fout = new FileOutputStream(_location + ze.getName());
// for (int c = zin.read(); c != -1; c = zin.read())
// {
// fout.write(c);
// }
byte[] buffer = new byte[4096];
for (int c = zin.read(buffer); c != -1; c = zin.read(buffer))
{
fout.write(buffer, 0, c);
}
zin.closeEntry();
fout.close();
}
}
zin.close();
delete_file();
} catch(Exception e) {
Log.e("Decompress", "unzip", e);
}
}
private void _dirChecker(String dir)
{
File f = new File(_location + dir);
if(!f.isDirectory()) {
f.mkdirs();
}
}
}
}
log cat
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02-21 16:20:29.155: E/Decompress(846): java.io.FileNotFoundException: /mnt/sdcard/reader.zip (Permission denied)
02-21 16:20:29.155: E/Decompress(846): at org.apache.harmony.luni.platform.OSFileSystem.open(Native Method)
02-21 16:20:29.155: E/Decompress(846): at dalvik.system.BlockGuard$WrappedFileSystem.open(BlockGuard.java:232)
02-21 16:20:29.155: E/Decompress(846): at java.io.FileInputStream.<init>(FileInputStream.java:80)
02-21 16:20:29.155: E/Decompress(846): at java.io.FileInputStream.<init>(FileInputStream.java:132)
02-21 16:20:29.155: E/Decompress(846): at com.reader.MainActivity$Decompress.unzip(MainActivity.java:588)
02-21 16:20:29.155: E/Decompress(846): at com.reader.MainActivity.Decompress(MainActivity.java:493)
02-21 16:20:29.155: E/Decompress(846): at com.reader.MainActivity.access$1(MainActivity.java:488)
02-21 16:20:29.155: E/Decompress(846): at com.reader.MainActivity$DownloadFileAsync.onPostExecute(MainActivity.java:570)
02-21 16:20:29.155: E/Decompress(846): at com.reader.MainActivity$DownloadFileAsync.onPostExecute(MainActivity.java:1)
02-21 16:20:29.155: E/Decompress(846): at android.os.AsyncTask.finish(AsyncTask.java:417)
02-21 16:20:29.155: E/Decompress(846): at android.os.AsyncTask.access$300(AsyncTask.java:127)
02-21 16:20:29.155: E/Decompress(846): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
02-21 16:20:29.155: E/Decompress(846): at android.os.Handler.dispatchMessage(Handler.java:99)
02-21 16:20:29.155: E/Decompress(846): at android.os.Looper.loop(Looper.java:123)
02-21 16:20:29.155: E/Decompress(846): at android.app.ActivityThread.main(ActivityThread.java:3683)
02-21 16:20:29.155: E/Decompress(846): at java.lang.reflect.Method.invokeNative(Native Method)
02-21 16:20:29.155: E/Decompress(846): at java.lang.reflect.Method.invoke(Method.java:507)
02-21 16:20:29.155: E/Decompress(846): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-21 16:20:29.155: E/Decompress(846): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-21 16:20:29.155: E/Decompress(846): at dalvik.system.NativeStart.main(Native Method)
当我按下下载按钮时，我想从路径下载一个 zip，然后什么都没有进行，只会翻转进度条并返回主页。在 logcat 中显示解压功能错误。请为此提供适当的解决方案。android 平台中的新版本。谢谢提前