A view for text files in android like ImageView for Images in android

Question

I want to make an app which shows text files like docs,pdf,txt etc in a grid view just like ImageView shows images.Is there any View for these files in android. The code is given below,in this I am able to view images in grid but not document files.

 public class MainActivity extends Activity implements  OnItemClickListener{

public class ImageAdapter extends BaseAdapter {

 private Context mContext;
 ArrayList<String> itemList = new ArrayList<String>();

 public ImageAdapter(Context c) {
  mContext = c; 
 }

 void add(String path){
  itemList.add(path); 
 }

  @Override
   public int getCount() {
  return itemList.size();
 }

 @Override
 public Object getItem(int arg0) {
 // TODO Auto-generated method stub
 return null;
 }

 @Override
 public long getItemId(int position) {
 // TODO Auto-generated method stub
 return 0;
}

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  ImageView imageView;
     if (convertView == null) {  // if it's not recycled, initialize some attributes
         imageView = new ImageView(mContext);
         imageView.setLayoutParams(new GridView.LayoutParams(70, 70));
         imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
         imageView.setPadding(3, 3, 3, 3);
     } else {
         imageView = (ImageView) convertView;
     }

     Bitmap bm = decodeSampledBitmapFromUri(itemList.get(position), 100, 100);

     imageView.setImageBitmap(bm);
     return imageView;
 }

 public Bitmap decodeSampledBitmapFromUri(String path, int reqWidth, int reqHeight) {

  Bitmap bm = null;
 // First decode with inJustDecodeBounds=true to check dimensions
 final BitmapFactory.Options options = new BitmapFactory.Options();
 options.inJustDecodeBounds = true;
 BitmapFactory.decodeFile(path, options);

 // Calculate inSampleSize
 options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

 // Decode bitmap with inSampleSize set
 options.inJustDecodeBounds = false;
 bm = BitmapFactory.decodeFile(path, options); 

 return bm;   
}

public int calculateInSampleSize(

 BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
 final int height = options.outHeight;
 final int width = options.outWidth;
 int inSampleSize = 1;

 if (height > reqHeight || width > reqWidth) {
  if (width > height) {
  inSampleSize = Math.round((float)height / (float)reqHeight);    
 } else {
  inSampleSize = Math.round((float)width / (float)reqWidth);    
 }   
 }

 return inSampleSize;    
 }

 }

 ImageAdapter myImageAdapter;

 @Override
 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    GridView gridview = (GridView) findViewById(R.id.gridview);
    myImageAdapter = new ImageAdapter(this);
    gridview.setAdapter(myImageAdapter);
    gridview.setOnItemClickListener(this);
    String ExternalStorageDirectoryPath = Environment
      .getExternalStorageDirectory()
      .getAbsolutePath();

    String targetPath = ExternalStorageDirectoryPath + "/img/";

    Toast.makeText(getApplicationContext(), targetPath, Toast.LENGTH_LONG).show();
    File targetDirector = new File(targetPath);

    File[] files = targetDirector.listFiles();
    for (File file : files){
    myImageAdapter.add(file.getAbsolutePath());


     } 
    }

  @Override
  public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {

 }

}

if(filetype == pdf) { setPdfmage} else if (filetype == txt){ setTxtmage } else if.... — Boris Mocialov, Aug 06 '13 at 11:40
one small changes in @MocialovBoris comment if(filetype .toString().equals("pdf"){setpdfimage} else if filetype.toString().equals("txt")){setTxtmage } — Nirmal, Aug 06 '13 at 11:46
@Nirmal now i got problem with setpdfimage :-( it is not working — Sangeeta Rawat, Aug 06 '13 at 11:54
@SangeetaRawat what error are you getting while placing that if else in your code — Nirmal, Aug 07 '13 at 04:49

score 1 · Answer 1 · edited May 23 '17 at 11:58

Use like this:

                      if(filetype.toString().equals(".pdf"))
                      {
                              //place your pdf image
                          imageview= (ImageView)findViewById(R.id.imageView);
                          Drawable res = getResources().getDrawable(imageResource);
                          imageView.setImageDrawable(res);
                      }

                      else if(filetype.toString().equals(".docs"))
                      {
                            //place your docs image
                          imageview= (ImageView)findViewById(R.id.imageView);
                          Drawable res = getResources().getDrawable(imageResource);
                          imageView.setImageDrawable(res); 
                      }

                      else if(filetype.toString().equals(".txt "))
                      {
                            //place your txt image
                          imageview= (ImageView)findViewById(R.id.imageView);
                          Drawable res = getResources().getDrawable(imageResource);
                          imageView.setImageDrawable(res);
                      }

How to set the image from drawable dynamically in android?.hope this will help you

A view for text files in android like ImageView for Images in android

1 Answers1