First of all, let me give you a link: AssetManager, through this class we can easily access any files lying inside the Assets directory of android application. (or any sub-folders inside the Assets directory).

Now, we can have an object of AssetManager class by using getAssets() method:

AssetManager assetManager = getAssets(); 

And the rest of the procedure i have given and described by making comments in the example so now go through the full solutions provided below with the output snap.

Output:

Solution:

ReadFileAssetsActivity.java

package com.paresh.readfileasset;

import java.io.IOException;
import java.io.InputStream;

import android.app.Activity;
import android.content.res.AssetManager;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * @author Paresh N. Mayani
 * @Website http://www.technotalkative.com
 */
public class ReadFileAssetsActivity extends Activity {

 /** Called when the activity is first created. */

 @Override
 public void onCreate(Bundle savedInstanceState) {

 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);

 TextView txtContent = (TextView) findViewById(R.id.txtContent);
 TextView txtFileName = (TextView) findViewById(R.id.txtFileName);
 ImageView imgAssets = (ImageView) findViewById(R.id.imgAssets);

 AssetManager assetManager = getAssets();

 // To get names of all files inside the "Files" folder
 try {
 String[] files = assetManager.list("Files");

 for(int i=0; i<files.length; i++)="" {="" txtfilename.append("\n="" file="" :"+i+"="" name=""> "+files[i]);
 }
 } catch (IOException e1) {
 // TODO Auto-generated catch block
 e1.printStackTrace();
 }

 // To load text file
 InputStream input;
 try {
 input = assetManager.open("helloworld.txt");

 int size = input.available();
 byte[] buffer = new byte[size];
 input.read(buffer);
 input.close();

 // byte buffer into a string
 String text = new String(buffer);

 txtContent.setText(text);
 } catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 // To load image
 try {
 // get input stream
 InputStream ims = assetManager.open("android_logo_small.jpg");

 // create drawable from stream
 Drawable d = Drawable.createFromStream(ims, null);

 // set the drawable to imageview
 imgAssets.setImageDrawable(d);
 }
 catch(IOException ex) {
 return;
 }
 }
}
</files.length;>

main.xml
Note: Please consider scrollview as ScrollView, textview as TextView….etc. Its just problem inside the code plugin.

<!--?xml version="1.0" encoding="utf-8"?-->

<scrollview xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent">

<linearlayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical">

 <textview android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" android:id="@+id/txtContent">

 <imageview android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/imgAssets">

 <textview android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/txtFileName">
</textview></imageview></textview></linearlayout>

</scrollview>

Download Full source code from here: Android – Read file from Assets

Reference: Android – Read file from Assets from our JCG partner Paresh N. Mayani at the TechnoTalkative blog.