how to save data to internal file storage in android

Hi,Today we are going to learn about save some data  to file internally in android.

Storage Options in android:

1) Sqlite Database

2) Sharedpreferences

3) Internal File Storage

4) External File Storage(i.e., In SDCARD)

File Internal Storage means any  kind of data we can store to file internally i.e., in internal memory of device

we can store any kind of data to any kind of file.It is very easy and simple

Create a Project:

layout file

Create a UI file in res/layout folder

main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="15dp"
        android:text="save" />


</RelativeLayout>

MainActivity.java


import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import android.app.Activity;
import android.content.Context;
import android.content.ContextWrapper;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {
EditText getedit;
Button savebtn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getedit=(EditText)findViewById(R.id.editText1);
savebtn=(Button)findViewById(R.id.button1);
savebtn.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
String getdata=getedit.getText().toString();

String filename = "internalsave.txt";
       
          String filepath = "sample";
           File myInternalFile;
          // Log.e("log_tag", "Error converting result "+finalresult1);
              ContextWrapper contextWrapper = new ContextWrapper(getApplicationContext());
              @SuppressWarnings("deprecation")
File directory = contextWrapper.getDir(filepath, Context.MODE_WORLD_READABLE);
              myInternalFile = new File(directory , filename);
              try {
               FileOutputStream fos = new FileOutputStream(myInternalFile);
               fos.write(getdata.getBytes());
               fos.close();
              } catch (IOException e) {
               e.printStackTrace();
              }
}
});

}



}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.forblog1"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

if you want to get data from internal file storage just refer here

Finally,Run your Application

OUTPUT:

enter any data if you want then click on save button.It will be saved internally,then

go to your File Explorer there

 we can find a created file   at data/data/your package name/sample/internalsave.txt