Mega Code Archive
External Storage Directory
<![CDATA[
package app.test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class Test extends Activity {
private EditText textBox;
private static final int READ_BLOCK_SIZE = 100;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
InputStream is = this.getResources().openRawResource(R.raw.textfile);
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String str = null;
try {
while ((str = br.readLine()) != null) {
Toast.makeText(getBaseContext(), str, Toast.LENGTH_SHORT)
.show();
}
is.close();
br.close();
} catch (IOException e) {
e.printStackTrace();
}
textBox = (EditText) findViewById(R.id.txtText1);
Button saveBtn = (Button) findViewById(R.id.btnSave);
Button loadBtn = (Button) findViewById(R.id.btnLoad);
saveBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
String str = textBox.getText().toString();
try {
/*
* //---Internal Storage--- FileOutputStream fOut =
* openFileOutput("textfile.txt", MODE_WORLD_READABLE);
*
*/
File sdCard = Environment.getExternalStorageDirectory();
File directory = new File(sdCard.getAbsolutePath()
+ "/MyFiles");
directory.mkdirs();
File file = new File(directory, "textfile.txt");
FileOutputStream fOut = new FileOutputStream(file);
OutputStreamWriter osw = new OutputStreamWriter(fOut);
osw.write(str);
osw.flush();
osw.close();
Toast.makeText(getBaseContext(),"File saved successfully!", Toast.LENGTH_SHORT).show();
textBox.setText("");
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
});
loadBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
try {
// ---SD Storage---
File sdCard = Environment.getExternalStorageDirectory();
File directory = new File(sdCard.getAbsolutePath()
+ "/MyFiles");
File file = new File(directory, "textfile.txt");
FileInputStream fIn = new FileInputStream(file);
InputStreamReader isr = new InputStreamReader(fIn);
char[] inputBuffer = new char[READ_BLOCK_SIZE];
String s = "";
int charRead;
while ((charRead = isr.read(inputBuffer)) > 0) {
String readString = String.copyValueOf(inputBuffer, 0,
charRead);
s += readString;
inputBuffer = new char[READ_BLOCK_SIZE];
}
textBox.setText(s);
Toast.makeText(getBaseContext(),
"File loaded successfully!", Toast.LENGTH_SHORT)
.show();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
});
}
}
//raw/textfile.txt
The quick brown fox jumps over the lazy dog
// main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Please enter some text"
/>
<EditText
android:id="@+id/txtText1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/btnSave"
android:text="Save"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/btnLoad"
android:text="Load"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
]]>