It's a example, in ShowSavedFiles() method, get the saved file name and list in ListView.
package com.exercise.AndroidInternalStorage;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
public class AndroidInternalStorageActivity extends Activity {
EditText edFileName, edContent;
Button btnSave;
ListView listSavedFiles;
String[] SavedFiles;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
edFileName = (EditText)findViewById(R.id.filename);
edContent = (EditText)findViewById(R.id.content);
btnSave = (Button)findViewById(R.id.save);
listSavedFiles = (ListView)findViewById(R.id.list);
ShowSavedFiles();
btnSave.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String fileName = edFileName.getText().toString();
String content = edContent.getText().toString();
FileOutputStream fos;
try {
fos = openFileOutput(fileName, Context.MODE_PRIVATE);
fos.write(content.getBytes());
fos.close();
Toast.makeText(
AndroidInternalStorageActivity.this,
fileName + " saved",
Toast.LENGTH_LONG).show();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ShowSavedFiles();
}});
}
void ShowSavedFiles(){
SavedFiles = getApplicationContext().fileList();
ArrayAdapter<String> adapter
= new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
SavedFiles);
listSavedFiles.setAdapter(adapter);
}
}
<?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="@string/hello"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Enter File Name" />
<EditText
android:id="@+id/filename"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Enter Content" />
<EditText
android:id="@+id/content"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/save"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Save"/>
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
Download the files.
next:
- Read file from Internal Storage via FileInputStream
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