Android FileInputStream and FileOutputStream

Package com. example. file;

Import java. io. FileInputStream;
Import java. io. FileOutputStream;

Import org. apache. http. util. EncodingUtils;

Import android. app. Activity;
Import android. content. Context;
Import android. graphics. Color;
Import android. OS. Bundle;
Import android. view. Menu;
Import android. view. View;
Import android. view. View. OnClickListener;
Import android. widget. Button;
Import android. widget. EditText;
Import android. widget. TextView;

Public class MainActivity extends Activity {
Private static final String FILE_NAME = "file_out.txt ";

Button mButton1, mButton2;
EditText mEditText;
TextView mTextView;
@ Override
Public void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. activity_main );
MButton1 = (Button) findViewById (R. id. button1 );
MButton2 = (Button) findViewById (R. id. button2 );
MEditText = (EditText) findViewById (R. id. editText1 );
MTextView = (TextView) findViewById (R. id. textView1 );


MButton2.setOnClickListener (new OnClickListener (){

Public void onClick (View v ){
// TODO Auto-generated method stub

Try {

FileInputStream fileInputStream = openFileInput (FILE_NAME );
Byte [] buffer = new byte [1024];

FileInputStream. read (buffer );

String filecontentString = EncodingUtils. getString (buffer, "UTF-8 ");

 

MTextView. setText (filecontentString );
MTextView. setTextColor (Color. YELLOW );

}
Catch (Exception e ){
// TODO: handle exception
}

}
});


MButton1.setOnClickListener (new OnClickListener (){

Public void onClick (View v ){
// TODO Auto-generated method stub

Try {
// Append and save

FileOutputStream fileOutputStream = openFileOutput (FILE_NAME, Context. MODE_APPEND );

 

String inputfilecontent = mEditText. getText (). toString ();

FileOutputStream. write (inputfilecontent. getBytes ());
FileOutputStream. close ();
}
Catch (Exception e ){
// TODO: handle exception
}
}
});

}

@ Override
Public boolean onCreateOptionsMenu (Menu menu ){
GetMenuInflater (). inflate (R. menu. activity_main, menu );
Return true;
}