我希望我的应用程序将zip文件保存并安装在应用程序的内部存储中，而不是用户sdcard，因此没有创建文件，这可能会限制没有SD卡的用户。有人可以指导我如何更改我的代码，以便zip文件保存在内部存储而不是SD卡。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.downloadbible);
Spinner spinner = (Spinner) findViewById(R.id.spnLanguage);
languageList.clear();
Map<String, String> map = new HashMap<String, String>();
map.put("languageName", "");
languageList.add(map);
languageAdapter = new SimpleAdapter(this, languageList, android.R.layout.simple_spinner_item,
new String[] {"languageName"}, new int[] {android.R.id.text1});
languageAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
SimpleAdapter.ViewBinder viewBinder = new SimpleAdapter.ViewBinder() {
public boolean setViewValue(View view, Object data,
String textRepresentation) {
TextView textView = (TextView) view;
textView.setText(textRepresentation);
return true;
}
};
languageAdapter.setViewBinder(viewBinder);
spinner.setAdapter(languageAdapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
refreshBibleList(parent, position);
}
public void onNothingSelected(AdapterView<?> arg0) {
//do nothing
}
});
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
File sdcard = Environment.getExternalStorageDirectory();
File downloadFolder = new File(sdcard.getPath() + Constants.DOWNLOAD_FOLDER);
if (!downloadFolder.isDirectory()) {
boolean success = downloadFolder.mkdirs();
Log.d(TAG, "Creating download directory success: " + success);
}
}
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(R.string.confirmDownload);
builder.setPositiveButton(getResources().getString(R.string.yes), this);
builder.setNegativeButton(getResources().getString(R.string.no), this);
confirmDownload = builder.create();
readPreference();
adapter = new DisplayDownloadAdapter(this, R.layout.rowdownload, bibleList, currentFontSize);
setListAdapter(adapter);
getListView().setOnItemClickListener(this);
try {
URL url = new URL(homeUrl + "bible_index_all.txt");
Log.d(TAG, "Accessing Bible Repository All");
pdRepository = ProgressDialog.show(this,
getResources().getString(R.string.pleaseWait),
getResources().getString(R.string.loading), true, false);
new LoadingRepositoryTask().execute(url);
} catch (MalformedURLException e) {
Toast.makeText(this, R.string.repositoryUrlNotValid, Toast.LENGTH_LONG).show();
}
}
private boolean refreshBibleList(AdapterView<?> parent, int position) {
if (parent.getAdapter().isEmpty()) {
return false;
}
final Map<String, String> data = (Map<String, String>) parent.getItemAtPosition(position);
bibleList.clear();
for (DisplayDownload bible : allBibleList) {
if (bible.getLanguage() != null && bible.getLanguage().equals(data.get("languageName"))) {
bibleList.add(bible);
}
}
adapter.notifyDataSetChanged();
return true;
}
private void readPreference() {
SharedPreferences preference = getSharedPreferences(Constants.PREFERENCE_NAME, MODE_PRIVATE);
currentFontSize = preference.getInt(Constants.FONT_SIZE, 14);
}
private class LoadingRepositoryTask extends AsyncTask<Object, Void, Object> {
@Override
protected Object doInBackground(Object... arg) {
languageSet.clear();
allBibleList.clear();
URL url = (URL) arg[0];
HttpURLConnection conn = null;
BufferedReader reader = null;
try {
conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(TIMEOUT * 1000);
conn.setReadTimeout(TIMEOUT * 1000);
conn.setDoInput(true);
conn.setDoOutput(true);
InputStream is= conn.getInputStream();
if (is == null) {
return -1;
}
int i = 0;
if (is != null) {
reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
String line = null;
byte[] bomUtf8 = new byte[] {(byte) 0xEF, (byte) 0xBB, (byte) 0xBF};
while ((line = reader.readLine()) != null) {
String[] arrLine = line.split(";;");
if (arrLine.length != 4) continue;
if (i == 0) { //check for UTF-8 bom
if (Character.toString(arrLine[0].charAt(0)).equals(new String(bomUtf8, "UTF-8"))) {
arrLine[0] = arrLine[0].substring(1);
}
}
i++;
allBibleList.add(new DisplayDownload(arrLine[0], arrLine[1], arrLine[2], arrLine[3]));
if (!languageSet.contains(arrLine[0])) {
languageSet.add(arrLine[0]);
}
}
}
return String.valueOf(i);
} catch (Exception e) {
Log.d(TAG, "Error reading bible_index", e);
return ERROR + Util.getRootCause(e);
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
Log.d(TAG, "error in closing file", e);
}
}
if (conn != null) {
try {
if (conn.getInputStream() != null)
conn.getInputStream().close();
if(conn.getErrorStream() != null)
conn.getErrorStream().close();
} catch (Exception e) {
Log.d(TAG, "error in finally code", e);
}
}
}
}
@Override
protected void onPostExecute(Object result) {
if (pdRepository != null) {
String strResult = (String) result;
if (strResult.startsWith(ERROR)) {
String strMessage = "Error: " + strResult.substring(ERROR.length()) + ". Try again by pressing menu button and choose Refresh";
Toast.makeText(DownloadBible.this, strMessage, Toast.LENGTH_LONG).show();
} else {
languageList.clear();
for (String lang : languageSet) {
Map<String, String> map = new HashMap<String, String>();
map.put("languageName", lang);
languageList.add(map);
}
languageAdapter.notifyDataSetChanged();
Spinner spinner = (Spinner) findViewById(R.id.spnLanguage);
spinner.setSelection(0);
if (!refreshBibleList(spinner, 0)) {
String strMessage = "Error refreshing bible list. Try again by pressing menu button and choose Refresh";
Toast.makeText(DownloadBible.this, strMessage, Toast.LENGTH_LONG).show();
}
}
pdRepository.dismiss();
pdRepository = null;
}
}
}
private class DownloadTask extends AsyncTask<Object, Void, Object> {
@Override
protected Object doInBackground(Object... arg) {
File sdcard = Environment.getExternalStorageDirectory();
StringBuffer destFileName = new StringBuffer(sdcard.getPath());
destFileName.append(Constants.DOWNLOAD_FOLDER).append("/").append(downloadFileName.toLowerCase()).append(".zip");
StringBuffer extractedFileName = new StringBuffer(sdcard.getPath());
extractedFileName.append(Constants.BIBLE_FOLDER).append("/");
String crc32FileName = destFileName.toString().replaceAll(".zip", ".crc32");
File destFile = new File(destFileName.toString());
URL url = (URL) arg[0];
URL urlCrc32 = (URL) arg[1];
HttpURLConnection conn = null;
InputStream stream = null; //to read
FileOutputStream out = null; //to write
InputStream isCrc32 = null;
double fileSize = 0;
double downloaded = 0; //
long prevCrc32 = -1;
BufferedOutputStream bufferOut = null;
BufferedInputStream isZip = null;
DataInputStream isSize = null;
DataOutputStream osSize = null;
try {
File fCrc32 = new File(crc32FileName);
if (fCrc32.exists() && fCrc32.length() == 12) {
isSize = new DataInputStream(new FileInputStream(fCrc32));
prevCrc32 = isSize.readLong();
fileSize = isSize.readInt();
isSize.close();
}
//read crc32 file on server
conn = (HttpURLConnection) urlCrc32.openConnection();
conn.setConnectTimeout(TIMEOUT * 1000);
conn.setReadTimeout(TIMEOUT * 1000);
conn.connect();
if (conn.getResponseCode() == 404) {
conn.disconnect();
return MISSING_CHECKSUM;
}
isCrc32 = conn.getInputStream();
long crc32 = new DataInputStream(isCrc32).readLong();
isCrc32.close();
conn.disconnect();
conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(TIMEOUT * 1000);
conn.setReadTimeout(TIMEOUT * 1000);
if (crc32 != prevCrc32 || !destFile.exists()) {
conn.connect();
if (conn.getResponseCode() == 404) {
conn.disconnect();
return MISSING_BIBLE_FILE;
}
fileSize = conn.getContentLength();
Log.d(TAG, "filesize " + fileSize + url.getFile());
osSize = new DataOutputStream(new FileOutputStream(fCrc32));
osSize.writeLong(crc32);
osSize.writeInt((int)fileSize);
osSize.flush();
osSize.close();
out = new FileOutputStream(destFileName.toString());
} else {
downloaded = destFile.length();
conn.setRequestProperty("Range", "bytes=" + (int)downloaded + "-");
conn.connect();
if (conn.getResponseCode() == 416) { // if range is invalid
out = new FileOutputStream(destFileName.toString());
conn.disconnect();
conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(TIMEOUT * 1000);
conn.setReadTimeout(TIMEOUT * 1000);
downloaded = 0;
} else if (conn.getResponseCode() == 404) {
conn.disconnect();
return MISSING_BIBLE_FILE;
} else {
out = new FileOutputStream(destFileName.toString(), true);
}
}
final int fileSizeKb = (int) (fileSize / 1024) + 1;
stream = conn.getInputStream();
byte buffer[] = new byte[1024];
int read = -1;
int i = 0;
while ((read = stream.read(buffer))> -1) {
i++;
out.write(buffer, 0, read);
if (isCancelled()) {
out.flush();
handler.post(new Runnable() {
public void run() {
Toast.makeText(DownloadBible.this, R.string.downloadCancel, Toast.LENGTH_LONG).show();
}
});
return CANCEL;
}
downloaded += read;
if (i % 5 == 0) {
out.flush();
final int downloadedKb = (int) (downloaded / 1024);
final int progress = (int) ((downloaded / fileSize) * 100);
handler.post(new Runnable() {
public void run() {
StringBuffer sb = new StringBuffer(getResources().getString(R.string.downloading));
if (fileSizeKb < 2) {
sb.append(downloadedKb).append(" KB");
} else {
sb.append(" ").append(progress).append("%\n").append(downloadedKb).append(" / ").append(fileSizeKb).append(" KB");
}
pdDownload.setMessage(sb.toString());
}
});
}
}
out.flush();
out.close();
//validate checksum
isCrc32 = new BufferedInputStream(new FileInputStream(destFile));
byte[] bytes = new byte[1024];
int len = 0;
Checksum checksum = new CRC32();
while ((len = isCrc32.read(bytes)) >= 0) {
checksum.update(bytes, 0, len);
}
isCrc32.close();
if (checksum.getValue() != crc32) {
return FILE_CORRUPT;
}
//extract file
ZipFile zipFile = new ZipFile(destFileName.toString());
if (zipFile.size() != 1) {
return INVALID_BIBLE_FILE;
}
ZipEntry entry = (ZipEntry) zipFile.entries().nextElement();
if (!entry.getName().endsWith(".ont")) {
return INVALID_BIBLE_FILE;
}
handler.post(new Runnable() {
public void run() {
pdDownload.setMessage(getResources().getString(R.string.extracting));
}
});
isZip = new BufferedInputStream(zipFile.getInputStream(entry));
byte[] bufferExtract = new byte[8192];
FileOutputStream outStream = new FileOutputStream(extractedFileName.toString() + entry.getName().toLowerCase());
bufferOut = new BufferedOutputStream(outStream, bufferExtract.length);
int size = -1;
while((size = isZip.read(bufferExtract, 0, bufferExtract.length)) != -1) {
bufferOut.write(bufferExtract, 0, size);
}
bufferOut.flush();
return SUCCESS;
} catch (Exception e) {
Log.d(TAG, "error in reading/extract file", e);
return ERROR + Util.getRootCause(e);
} finally {
if (isCrc32 != null) {
try {
isCrc32.close();
} catch (IOException ie) {
Log.d(TAG, "error in closing file", ie);
}
}
if (isSize != null) {
try {
isSize.close();
} catch (IOException ie) {
Log.d(TAG, "error in closing file", ie);
}
}
if (osSize != null) {
try {
osSize.close();
} catch (IOException ie) {
Log.d(TAG, "error in closing file", ie);
}
}
if (out != null) {
try {
out.close();
} catch (IOException ie) {
Log.d(TAG, "error in closing file", ie);
}
}
if (conn != null) {
try {
if (conn.getInputStream() != null)
conn.getInputStream().close();
if(conn.getErrorStream() != null)
conn.getErrorStream().close();
} catch (Exception e) {
Log.d(TAG, "error in closing connection", e);
}
}
if (isZip != null) {
try {
isZip.close();
} catch (IOException ie) {
Log.d(TAG, "error in closing file", ie);
}
}
if (bufferOut != null) {
try {
bufferOut.close();
} catch (IOException ie) {
Log.d(TAG, "error in closing file", ie);
}
}
}
}
@Override
protected void onPostExecute(Object result) {
if (result == null) {
Toast.makeText(DownloadBible.this, R.string.downloadCancel, Toast.LENGTH_LONG).show();
}
String strResult = (String) result;
if (pdDownload != null) {
pdDownload.dismiss();
pdDownload = null;
}
if (result.equals(SUCCESS)) {
finish();
} else if (result.equals(INVALID_BIBLE_FILE)) {
Toast.makeText(DownloadBible.this, R.string.bibleFileNotValid, Toast.LENGTH_LONG).show();
} else if (strResult.startsWith(ERROR)) {
String strMessage = "Error: " + strResult.substring(ERROR.length());
Toast.makeText(DownloadBible.this, strMessage, Toast.LENGTH_LONG).show();
} else if (result.equals(FILE_CORRUPT)) {
Toast.makeText(DownloadBible.this, R.string.fileCorrupt, Toast.LENGTH_LONG).show();
} else if (result.equals(MISSING_CHECKSUM)) {
Toast.makeText(DownloadBible.this, R.string.missingChecksum, Toast.LENGTH_LONG).show();
} else if (result.equals(MISSING_BIBLE_FILE)) {
Toast.makeText(DownloadBible.this, R.string.missingBibleFile, Toast.LENGTH_LONG).show();
}
}
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
DisplayDownload download = bibleList.get(position);
downloadFileName = download.getFileName();
String state = Environment.getExternalStorageState();
if (!Environment.MEDIA_MOUNTED.equals(state)) {
Toast.makeText(this, R.string.sdcardNotReady, Toast.LENGTH_LONG);
return;
}
File sdcard = Environment.getExternalStorageDirectory();
StringBuffer destFileName = new StringBuffer(sdcard.getPath());
destFileName.append(Constants.BIBLE_FOLDER).append("/").append(downloadFileName.toLowerCase()).append(".ont");
File f = new File(destFileName.toString());
String str;
if (f.exists()) {
str = getResources().getString(R.string.confirmDownloadOverwrite);
} else {
str = getResources().getString(R.string.confirmDownloadQuestion);
}
String confirmQuestion = String.format(str, download.getName());
confirmDownload.setMessage(confirmQuestion);
confirmDownload.show();
}
private DownloadTask downloadTask;
@Override
public void onClick(DialogInterface dlg, int buttonId) {
if (dlg.equals(confirmDownload)) {
if (buttonId == DialogInterface.BUTTON_POSITIVE) {
try {
String state = Environment.getExternalStorageState();
if (!Environment.MEDIA_MOUNTED.equals(state)) {
Toast.makeText(this, R.string.sdcardNotReady, Toast.LENGTH_LONG);
return;
}
URL url = new URL(homeUrl + downloadFileName.toLowerCase() + ".zip");
URL urlCrc32 = new URL(homeUrl + downloadFileName.toLowerCase() + ".crc32");
Log.d(TAG, "Downloading file: " + url.getPath());
pdDownload = ProgressDialog.show(this,
getResources().getString(R.string.pleaseWait),
getResources().getString(R.string.downloading), true, true, this);
downloadTask = new DownloadTask();
downloadTask.execute(url, urlCrc32);
} catch (MalformedURLException e) {
Toast.makeText(this, R.string.downloadUrlNotValid, Toast.LENGTH_LONG).show();
}
}
}
}
@Override
public void onCancel(DialogInterface dlg) {
if (dlg == pdDownload) {
downloadTask.cancel(true);
}
}
private final int menuRefresh = 1;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
MenuItem item = menu.add(Menu.NONE, menuRefresh, Menu.NONE, R.string.refresh);
item.setIcon(R.drawable.menu_refresh);
item = menu.add(Menu.NONE, R.id.help, Menu.NONE, R.string.help);
item.setIcon(R.drawable.menu_help);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case menuRefresh:
try {
URL url = new URL(homeUrl + "bible_index_all.txt");
Log.d(TAG, "Accessing Bible Repository All");
pdRepository = ProgressDialog.show(this,
getResources().getString(R.string.pleaseWait),
getResources().getString(R.string.loading), true, false);
new LoadingRepositoryTask().execute(url);
} catch (MalformedURLException e) {
Toast.makeText(this, R.string.repositoryUrlNotValid, Toast.LENGTH_LONG).show();
}
return true;
case R.id.help:
Intent iHelp = new Intent(this, Help.class);
iHelp.putExtra(Constants.FONT_SIZE, currentFontSize);
iHelp.putExtra(Constants.HELP_CONTENT, R.string.help_downloadBible);
startActivity(iHelp);
return true;
}
return false;
}
}