How To Create Application Folder in SD Card ?

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Android framework create your application folder in internal space when you install any of app. it is located at data/data/package-name folder. if you have rooted emulator or smart phone you can check it out. but it has one disadvantage once user remove your app this folder will also be removed but if you want to store data after it also so you can use it if user again install your app or you want to store some info related to your app on SD card then you can create it using this tutorial.  just follow the steps of this tutorial.

Step -1 : Create New Android application and give name MainActivity to main activity and same name for layout file. minSdkVersion="11” and targetSdkVersion="17".you can use below android version also for compilation and build option. put this below code in your mainactivity so once user start your app it will be created so you can use it further in your app.
MainActivity.java
package com.androprogrammer.tutorialsamples;

import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.ActionBarActivity;
import android.widget.Toast;

import java.io.File;


public class MainActivity extends ActionBarActivity {

    String folderPath;
    File folder;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sdcard_folder_demo);
        folderPath = createFolder();
    }

    private String createFolder()
    {
            String extStorageDirectory = Environment
                    .getExternalStorageDirectory().toString();
            folder = new File(extStorageDirectory, "/Android/data/" + getPackageName());
            if(!folder.exists())
            {
                folder.mkdir();
                Toast.makeText(MainActivity.this, "Folder Created At :" + folder.getPath().toString(), Toast.LENGTH_LONG).show();
            }
            else
            {
                Toast.makeText(MainActivity.this, "Folder Already At :" + folder.getPath().toString(), Toast.LENGTH_LONG).show();
            }
            return folder.getPath().toString();
    }
}
Step -2 : i have created createFolder() method it will also check if folder is already created or not. if it is there it return path to the folder. the above code will create folder with your package name so to check out run your application. one more thing in order to create or write in SD card you required to add below permission in manifest file.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
 Screen Shots
androprogrammer.com 
 
That's it check out your application folder in SD card at Android/data/package-name folder. now you can store any data in or file in this folder using string returned by that method.

Keep coding.. 

1 comment :

  1. thanks man.
    thanks for clarifying the file names b'z i have gone through many tuts but it is quite confusing and here i can follow sequence.

    Thanks once again wasim.

    ReplyDelete