Exp No:04
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8'?>
manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.fittness.expno_04>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher
android:label="@string/app_name
android:roundlcon="@mipmap/ic_launcher_round
android:supportsRtl="true"
android:theme="@style/Theme.Expno04'>
<activity android:name=.MainActivity>
intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter
</activity>
</application>
</manifest
activity main.xml
<?xml version="1.0" encoding="utf-8'?>
LinearLayout xmins:android="http://schemas.android.com/apk/res/android"
xmins:app= http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout height="match_parent
android:layout margin="20dp
android:orientation='vertical
tools:ignore="ExtraText>
tools:context=".MainActivity'>
EditText android:id="@tid/mylnputText"
android:layout
width="match_parent"
android:layout_height="wrap_content"
android:ems="10" android:lines="5"
android:minLines="3" android:gravity="top|left"
android:inputType="textMultiLine
tools:ignore="LabelFor,Rt|Hardcoded"
android:autofillHints=">
srequestFocus />
</EditText>
<LinearLayout
android:layout_width="match_parent' android:layout height="wrap_content
android:orientation="horizontal"
android:weightSum="1.0
android:layout marginTop="20dp'>
<Button
android:id="@+id/saveExternalStorage
android:layout width="match_parent
android:layout height="match_parent
android:layoutmargin="10dp"
android:text="@string/write_data
android:textSize="30sp"
tools:ignore="HardcodedText' />
</LinearLayout>
<Button
android:id="@+id/getExternalstorage
android:layout_width= matchparent
android:layoutheight="wrap_content"
android:layout margin="10dp"
android:text="@string/read_data"
android:textSize="30sp"
tools:ignore="Hardcoded Text' />
<Button
android:id="@+id/btnClear
android:layout_width="'match_parent"
android:layout height= Wrap_content
android:layout margin="10dp"
android:text="@string/clear"
android.textsize="30sp
tools:ignore="HardcodedText,Invalidld" />
<TextView android:id="@+id/response
android:layoutwidth="'wrap_content
android:layout height="wrap_content android:padding="5dp"
android:text="
androidtextAppearance="?android:attr/textAppearanceMedium/>
/LinearLayout>
MainActivity.java
package com.fittnesss.expno_04
import androidx.appcompat.app.AppCompatActivity;
import java.io.BufferedReader;
import java.io.DatalnputStream;
import java.io.File;
import java.io.FilelnputStream;
import java.io.FileQutputStream;
import java.io.lOException;
import java.io.lnputStreamReader
import java.text. Breaklterator;
import android.os.Bundle;
import android.app.Activity;
import android.os.Environment;
import android.view.View;
import android. view. View.OnClickListener;
import android.widget.Button
import android.widget.EditText;
import android. widget. TextView;
class MainActivity extends AppCompatActivity {
public
EditText input Text;
TextView response;
Button saveButton,readButton,btnClear;
private String filename = SampleFile.txt;
private String filepath = "MyFileStorage;
File myExternal File;
String myData =
@Override
protected void onCreate(Bundle savedinstanceState){
super.onCreate(savedinstanceState);
setContentView(R.layout.activity_main);
inputText = (EditText) findViewByld(R.id.mylnput Text);
response
(TextView) find ViewByld(R.id.response);
saveButton =
(Button) findViewByld(R.id.saveExternalStorage)
saveButton.setOnClickListener(new OnClickListener0 {
@Override
public void onClick(View v){
try FileOutputStream fos =
new FileOutputStream(myExternalFile):
fos.writeinput Text.getText).toString0.getBytes0);
fos.close)
)catch (10Exception e) {
e.printStackTrace0:
inputText.set Text(");
response.setText('SampleFile. txt saved to External Storage...);
(Button) findViewByld(R.id.getExternalStorage);
readButton.setOnClickListener(new OnClickListener) {
readButton
=
@Override
void onClick(View v)
try
public
{
FilelnputStream fis = new FilelnputStream(myExternalFile)
DatalnputStream in = new DatalnputStream(fis);
BufferedReader br =
new BufferedReader(new InputStreamReader(in);
String strLine;
while ((strLine = br.readLine0) = null)
myData = myData + strLine;
in.close0:
catch (10Exception e) {
e.printstackTrace0;
input Text.set Text(myData);
response.setText('SampleFile.txt data retrieved from Internal Storage..");
btnClear
(Button) findView8yld(R.id.btnClear):
btnClear.setOnClickListener(new OnClickListener0 {
public void onClick(View v) {
/
clear text box
inputText.set Text(myData);
response.setText("Text Cleared...)
if (isExternalStorageAvailable0ll isExternalStorageReadOniy0)
saveButton.setEnabled(false);
else
myExternalFile = new File(getExternalFiles Dir(filepath), filename)};
private static booleanisExternalStorageReadOnly0
String extStorageState = Environment.getExternalStorageState);
f (Environment.MEDIA MOUNTED
return true;
READ_ONLY.equals(extStorageState))
return false;
private static boolean isExternalStorageAvailable0D
String extStorageState =Environment.getExternalStorageState):
if (Environment.MEDIAMOUNTED.equals(extStorageState)) {
return true;
return false;
Output:
Write Data
Expno-04
Android Studio
WRITE DATA
READ DATA
CLEAR
Studio
Studios
Studious
Werty uio p
a
Z
7123
sd
f
ghi
k
XCV b n m
Expno-0
Android Studia
WRITE DATA
READ DATA
CLEAR
SampleFile twt saved to External Storage
Studio
Studios
gw e r t
a s d f gh
Studious
ui o p
ik
z x cvb n m
7123
Read Data
Clear Data
Expno-04
Android Studio
WRITE DATA
READ DATA
CLEAR
SampleFile txt data retrieved from Internal
Storage..
Android
Android'sAndroids
wer t u i op
a
2
123
sd
X
f
gh
CVb
i
kI
n m
Expno-O
WRITE DATA
READ DATA
CLEAR
Text Cleared
Q
Ir
We rty u
a s
Z
7123
d f
ghi
**
o p
kI
XCV b n m