I have dat file, which is binary file.It currently inside raw folder on my project.
I want to use the file in my program.
I want to copy it to certain location on the device but when executing the method, I am getting the error "Failed to read Data Meta Data"
Here is the method:
public void copyRawOnSdCard(){
File sdcard = Environment.getExternalStorageDirectory();
String targetPath = sdcard.getAbsolutePath() + File.separator + "shape_predictor_68_face_landmarks.dat";
File file = new File(targetPath);
if (!file.exists())
{
final ProgressDialog pd; pd = ProgressDialog.show(this, "Copy Files for the First Time", "Please wait",
true);
pd.show();
InputStream in = getResources().openRawResource(
getResources().getIdentifier("shape_predictor_68_face_landmarks",
"raw", getPackageName()));
FileOutputStream out = null;
try {
out = new FileOutputStream(targetPath);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
byte[] buff = new byte[1024];
int read = 0;
try {
while ((read = in.read(buff)) > 0) {
out.write(buff, 0, read);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try{
in.close();
}catch (IOException e) {
e.printStackTrace();
}
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
pd.cancel();
}
}
Ideas?
Thanks
Apparently There is another implementation solution and that is to put it the .dat binary file in assets folder.
And here is the implementation:
https://stackoverflow.com/questions/4447477/how-to-copy-files-from-assets-folder-to-sdcard
And it worked for me.
Related
i am trying to create a file in the internal storage, i followed the steps in android developers website but when i run the below code there is no file created
please let me know what i am missing in the code
code:
File file = new File(this.getFilesDir(), "myfile");
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
FileOutputStream fOut = null;
try {
fOut = openFileOutput("myfile",Context.MODE_PRIVATE);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
fOut.write("SSDD".getBytes());
} catch (IOException e) {
e.printStackTrace();
}
try {
fOut.close();
} catch (IOException e) {
e.printStackTrace();
}
By default these files are private and are accessed by only your application and get deleted , when user delete your application
For saving file:
public void writeToFile(String data) {
try {
FileOutputStream fou = openFileOutput("data.txt", MODE_APPEND);
OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fou);
outputStreamWriter.write(data);
outputStreamWriter.close();
}
catch (IOException e) {
Log.e("Exception", "File write failed: " + e.toString());
}
}
For loading file:
public String readFromFile() {
String ret = "";
try {
InputStream inputStream = openFileInput("data.txt");
if ( inputStream != null ) {
InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String receiveString = "";
StringBuilder stringBuilder = new StringBuilder();
while ( (receiveString = bufferedReader.readLine()) != null ) {
stringBuilder.append(receiveString);
}
inputStream.close();
ret = stringBuilder.toString();
}
}
catch (FileNotFoundException e) {
Log.e("login activity", "File not found: " + e.toString());
} catch (IOException e) {
Log.e("login activity", "Can not read file: " + e.toString());
}
return ret;
}
Try to get the path for storing files were the app has been installed.The below snippet will give app folder location and add the required permission as well.
File dir = context.getExternalFilesDir(null)+"/"+"folder_name";
If you are handling files that are not intended for other apps to use, you should use a private storage directory on the external storage by calling getExternalFilesDir(). This method also takes a type argument to specify the type of subdirectory (such as DIRECTORY_MOVIES). If you don't need a specific media directory, pass null to receive the root directory of your app's private directory.
Probably, this would be the best practice.
Use this method to create folder
public static void appendLog(String text, String fileName) {
File sdCard=new File(Environment.getExternalStorageDirectory().getPath());
if(!sdCard.exists()){
sdCard.mkdirs();
}
File logFile = new File(sdCard, fileName + ".txt");
if (logFile.exists()) {
logFile.delete();
}
try {
logFile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
try {
//BufferedWriter for performance, true to set append to file flag
BufferedWriter buf = new BufferedWriter(new FileWriter(logFile, true));
buf.write(text);
buf.newLine();
buf.close();
} catch (IOException e) {
e.printStackTrace();
}
}
In this method, you have to pass your data string as a first parameter and file name which you want to create as second parameter.
I am trying to copy an image from the asset folder to the sdcard but doesn't seem to copy it on first launch. It creates the folder okay but doesn't copy the file over.
prefs = getPreferences(Context.MODE_PRIVATE);
if (prefs.getBoolean("firstLaunch", true)) {
prefs.edit().putBoolean("firstLaunch", false).commit();
File nfile=new File(Environment.getExternalStorageDirectory()+"/My Images");
nfile.mkdir();
}
AssetManager assetManager = getAssets();
String[] files = null;
try {
files = assetManager.list("middle.jpg");
} catch (IOException e) {
Log.e("tag", "Failed to get asset file list.", e);
}
for(String filename : files) {
InputStream in = null;
OutputStream out = null;
try {
in = assetManager.open(filename);
File outFile = new File(Environment.getExternalStorageDirectory()+ "/My Images" + filename);
out = new FileOutputStream(outFile);
copyFile(in, out);
} catch(IOException e) {
Log.e("tag", "Failed to copy asset file: " + filename, e);
}
finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
}
}
}
}
private void copyFile(InputStream in, OutputStream out) {
// TODO Auto-generated method stub
}
middle.jpg is the file i want to copy over. Can any one tell me what i am doing wrong?
PS i have WRITE_EXTERNAL_STORAGE in my manifest.
Thanks
You forgot to add / in the end of /My images while constructing the path
File outFile = new File(Environment.getExternalStorageDirectory()+ "/My Images/" + filename);
out = new FileOutputStream(outFile);
because the filename would be MyImages+Filename so it wouldn't exists for copying.
Please help me out I am not getting the default ringtone file path.
Can any body tell how to get access to the default ringtone in Android. Here is my code for doing that thing. I have commented the path that I gave directly to asset manager to open the file and read it.
public void copyAssets() {
AssetManager assetManager = this.getAssets();
// String FileName="//media/internal/audio/media/";
File io=getFilesDir();
String[] files = null;
try {
files = assetManager.list("");
// files=assetManager.list(FileName);
} catch (IOException e) {
Log.e("tag", "Failed to get asset file list.", e);
}
for (String filename : files) {
InputStream in = null;
OutputStream out = null;
// File mydir = context.getDir("mydir", Context.MODE_PRIVATE); //Creating an internal dir;
// File fileWithinMyDir = new File(mydir, "myfile"); //Getting a file within the dir.
// FileOutputStream out = new FileOutputStream(fileWithinMyDir); //Use the stream as usual
//
try {
in = assetManager.open("Ringtone");
// File myFolder = new File(Environment.getDataDirectory() + "/myFolder");
File myFolder = this.getDir("myFolder", this.MODE_PRIVATE);
File fileWithinMyDir=new File(myFolder,"Ringtoness");
out = new FileOutputStream(fileWithinMyDir);
copyFile(in, out);
} catch (IOException e) {
Log.e("tag", "Failed to copy asset file: " + filename, e);
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
}
}
}
}
}
public void copyFile(InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while ((read = in.read(buffer)) != -1) {
out.write(buffer, 0, read);
}
}`
I am trying firstly to download the file and its content from Dropbox in Android app using Dropbox Core API but when i execute the following code the app crushes.
EDIT: I have used two functions downloadDropboxFile and copy functions. The problem is that i am getting blank data when i read the local file which is supposed to contain the dropbox file data.
Here is the code where i call the function
downloadDropboxFile("/userandpass.txt");
if (mDBApi.getSession().isLinked())
{
InputStream instream = new FileInputStream(String.valueOf(getExternalCacheDir()) + "/userandpass.txt");
InputStreamReader inputreader = new InputStreamReader(instream);
BufferedReader buffreader = new BufferedReader(inputreader);
mTestOutput.setText(buffreader.readLine());
}
Here is the functions
private boolean downloadDropboxFile(String fileSelected) {
File dir = new File(String.valueOf(getExternalCacheDir()));
if (!dir.exists())
dir.mkdirs();
try {
File localFile = new File(dir + fileSelected);
if (!localFile.exists()) {
localFile.createNewFile();
copy(fileSelected, localFile);
} else {
}
} catch (IOException e) {
e.printStackTrace();
}
return true;
}
private void copy(final String dbPath, final File localFile) {
new Thread(new Runnable() {
#Override
public void run() {
BufferedInputStream br = null;
BufferedOutputStream bw = null;
try {
DropboxAPI.DropboxInputStream fd = mDBApi.getFileStream(dbPath,null);
br = new BufferedInputStream(fd);
bw = new BufferedOutputStream(new FileOutputStream(localFile));
byte[] buffer = new byte[4096];
int read;
while (true) {
read = br.read(buffer);
if (read <= 0) {
break;
}
bw.write(buffer, 0, read);
}
} catch (DropboxException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (bw != null) {
try {
bw.close();
if (br != null) {
br.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}). start();
}
Dropbox Core API Implementation on Android Studio:
On app/libs i have the:
dropbox-android-sdk-1.6.3.jar
httpmime--4.0.3.jar
json_simple-1.1.jar
Your issue is here :
if (!localFile.exists()) {
localFile.createNewFile(); //otherwise dropbox client will fail silently
}
The exception is :
java.io.IOException: open failed: EROFS (Read-only file system)
This means you're trying to create a File on a location that is read only in the phone's memory, I'm guessing the internal storage. Have a look at this excellent answer by Mark Murphy on creating a File based on locations that can be written to.
Hoping this has been of some help, happy coding ;-)
File albumF = getVideoAlbumDir();
String path = albumF.getAbsolutePath();
// path =/storage/emulated/0/Pictures/.MyImages (Hidden folder)
// fileSelected.fileName()=IMG_20140417_113847.jpg
File localFile = new File(path + "/" + fileSelected.fileName());
Log.v("", "file exist===" + localFile.exists());
if (!localFile.exists()) {
Log.v("", "inside if===");
Log.v("", "Parent Filet===" + localFile.getParentFile());
localFile.getParentFile().mkdirs();
// localFile.createNewFile();
copy(fileSelected, localFile);
} else {
Log.v("", "inside else===");
mCurrentPhotoPath = localFile.getAbsolutePath();
uploadMediaFile();
}
This copy method copies data from dropbox file to my local storage.
private void copy(final Entry fileSelected, final File localFile) {
final ProgressDialog pd = ProgressDialog.show(ChatActivity.this,
"Downloading...", "Please wait...");
new Thread(new Runnable() {
#Override
public void run() {
BufferedInputStream br = null;
BufferedOutputStream bw = null;
DropboxInputStream fd;
try {
fd = mDBApi.getFileStream(fileSelected.path,
localFile.getAbsolutePath());
br = new BufferedInputStream(fd);
bw = new BufferedOutputStream(new FileOutputStream(
localFile));
byte[] buffer = new byte[4096];
int read;
while (true) {
read = br.read(buffer);
if (read <= 0) {
break;
}
bw.write(buffer, 0, read);
}
pd.dismiss();
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
android.os.Message msg = new android.os.Message();
msg.arg1 = 100;
if (msg.arg1 >= 100) {
progressHandler.sendMessage(msg);
mCurrentPhotoPath = localFile.getAbsolutePath();
}
} catch (DropboxException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (bw != null) {
try {
bw.close();
if (br != null) {
br.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}).start();
I am creating file in a folder using localFile.getParentFile().mkdirs();
I got above error when I upload this file to server.
how to fix this?
If you've tried all other options - and problem still persists - then maybe you have a case when the file you want to create matches name of already existing directory.(which might be earlier created my some call to mkdirs() maybe accidentally).
Example:
You want to save file Test\test.pdf but you already have folder Test\Test.pdf\