I am creating a DIR from my app when app first time run.Here is the code for this
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
Log.d("MyApp", "No SDCARD");
} else {
File directory = new File(Environment.getExternalStorageDirectory()+File.separator+"MyContactsBackUp");
directory.mkdirs();
}
now what i want to know is that if external storage is missing then how can i create DIR on internal storage
In below code you can create directory structure in internal storage:-
File fil = new File(Activitythis.getFilesDir().getPath());
Related
I wanted to create some folders and some files to /storage/MyFolder/.
I had tried to work on using /storage/emulated/0/MyFolder and it is working but i want to make hide under the storage root folder.
Is there any possible way for me to do this?
You can create folder like this in External Storage directory:
String folder_main = "NewFolder";
File f = new File(Environment.getExternalStorageDirectory(), folder_main);
if (!f.exists()) {
f.mkdirs();
}
//get path to external storage (SD card)
String iconsStoragePath = Environment.getExternalStorageDirectory() + "/Abc/";
File sdIconStorageDir = new File(iconsStoragePath);
//create storage directories, if they don't exist
if(!sdIconStorageDir.exists()){
sdIconStorageDir.mkdirs();
}
I am trying to create a directory in the internal storage into an Android device using the following code but it seems like I am missing something. The directory is not showing in the internal storage. I have tried this code:
File testDir = DirectoryTestActivity.this.getDir("Test", Context.MODE_PRIVATE);
if (!testDir.exists())
{
testDir.mkdirs();
}
add you internal path in new File(your internal path )
File newFolderVideos = new File(context.getFilesDir().getAbsolutePath() + "/Pictures");
if (!newFolderVideos .exists()) {
newFolderVideos.mkdirs();
}
I put some .mp4 file in a folder in my android device internal storage. And then I play this file from my application. It plays well if exists otherwise app crushed.
So before play file I want to check its existence.
I tried below code but no luck.
File file = new File("file:///storage/emulated/0/tutorial/1a1cbfc4-18cb-4637-8405-01bf9bebeda3.mp4");
if (file.exists()) {
LogUtil.printLogMessage(VideoListActivity.class.getName(), "video File", "file exist");
} else {
LogUtil.printLogMessage(VideoListActivity.class.getName(), "video File", "file not exist");
}
i am sure the file is exist in the folder named tutorial in my internal storage.
Use file.isFile() for file & file.isDirectory() for directory,
file.exists() tries to access the file which causes it to crash if the file doesn't exist, file.isFile() uses linux stat, which only returns the information about the file without trying to access it.
Please make proper file name, Replace with File myDirectory = new File(Environment.getExternalStorageDirectory(), dirName);
public Boolean checkFile(){
File file = new File("/storage/emulated/0/tutorial/1a1cbfc4-18cb-4637-8405-01bf9bebeda3.mp4");
if (file.exists()) {
return true;
} else {
return false;
}
}
Use checkfile True/False flag before video play.
Try this
File file = new File(path);
if (!file.isFile()) {
}else{
}
I'm using code in comment to save a file in directory folder. This code is working properly with mobile phone having sd card.
But if I use it with mobile phone not having sd card it is giving IO exception.
How can I create a folder like whatsapp has in device storage root to save images etc but I want a folder of application name to save .csv files in my device storage root.
First make sure you have added Storage Permissions inside Manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
If you want to create folder inside ExternalDirectory
File f = new File(Environment.getExternalStorageDirectory()+"/foldername");
if(!f.exists()) f.mkdir();
If you want to create file inside internal storage
File mydir = context.getDir("mydir", Context.MODE_PRIVATE); //Creating an internal directory;
File fileWithinMyDir = new File(mydir, "myfile");
FileOutputStream out = new FileOutputStream(fileWithinMyDir);
You can create directory in internal storage and external storage as Follows.
//check whether Sdcard present or not
Boolean isSDPresent = android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);
if(isSDPresent)
{
// yes SD-card is present
String directory = "/your Directory name or app name ";
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + directory;
File dir = new File(path);
if(!dir.exists()) //check if not created then create the firectory
dir.mkdirs();
//add your files in directory as follows
File file = new File(dir, filename);
}
else
{
// create folder in internal memory
File mydir = context.getDir(directory, Context.MODE_PRIVATE); //Creating an internal directry
if(!mydir.exists()) //check if not created then create the firectory
mydir.mkdirs();
//add your files in directory as follows
File file = new File(mydir, filename);
I hope it will work for you
I try a lot to create a folder in SD card in android 4.4.2 version.
i try the following code
String dirName="Test";
File file = new File(Environment.getExternalStorageDirectory(), dirName);
boolean status = file.mkdir();
if (status)
Toast.makeText(MainActivity.this,
"Directory created successfully", Toast.LENGTH_SHORT)
.show();
else
Toast.makeText(MainActivity.this, "Directory create failed",
Toast.LENGTH_SHORT).show();
but it creates a folder in internal storage.
and I try another code is
String path=System.getenv("SECONDARY_STORAGE");
File file=new File(path +"/Test123");
file.mkdir();
it creates a folder in External SDCARD in android 4.1 but not in android 4.4.2
So how can i create a folder in External sdcard in android 4.4.2??
If anyone know please help me..
Thanks in advance
The documentation states that
Applications should not directly use this top-level directory, in
order to avoid polluting the user's root namespace. Any files that are
private to the application should be placed in a directory returned by
Context.getExternalFilesDir, which the system will take care of
deleting if the application is uninstalled.
where with top-level directory they mean the return value of Enviroment.getExternalStorageDirectory()
Using getExternalFilesDir you will have
File file = new File (getExternalFilesDir(null), dirName);
if (!file.exists()) {
boolean status = file.mkdir();
if (status) {
Toast.makeText(MainActivity.this, "Directory created successfully", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(MainActivity.this, "Directory create failed", Toast.LENGTH_SHORT).show();
}
}
also you should be aware of the fact that mkdir() returns false if the directory already exists
This should be self-explanatory.
String folderName = "NewFolder";
File file = new File(Environment.getExternalStorageDirectory(),
folderName);
if (!file.exists()) {
file.mkdirs();
}
Make sure you have added WRITE_EXTERNAL_STORAGE permission in your manifest.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Credits to Dhaval