찍은 날짜를 얻고 표시하는 방법?

Question

저는 첫 활동에서 sdcard에 그림을 보여주고 gridview에로드하는 활동을했습니다. 두 번째 활동은 gridview에서 그림을 클릭하면 전체 크기의 이미지가 표시됩니다. 내가 원하는 것은 두 번째 활동으로, 클릭 한 그림의 '찍은 날짜'를 표시하고 싶습니다. 찍은 날짜를 가져와 표시하는 방법.

여기가 내 첫 번째 활동입니다. 파일이 경로에 존재하는 경우 날짜가 없습니다 만든 경우

public class MainActivity extends Activity { 

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(220, 220)); 
      imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); 
      imageView.setPadding(8, 8, 8, 8); 
     } else { 
      imageView = (ImageView) convertView; 
     } 

     Bitmap bm = decodeSampledBitmapFromUri(itemList.get(position), 220, 
       220); 

     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); 

    String ExternalStorageDirectoryPath = Environment 
      .getExternalStorageDirectory().getAbsolutePath(); 

    String targetPath = ExternalStorageDirectoryPath + "/test/"; 

    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()); 
    } 
} 

gridview.setOnItemClickListener(new OnItemClickListener() { 
      public void onItemClick(AdapterView<?> parent, View v, 
        int position, long id) { 

ImageView img = myImageAdapter.getView(position, v, parent); 
       img.buildDrawingCache(); 
       Bitmap bmap = img.getDrawingCache(); 
       Intent intent = new Intent(MainActivity.this, 
         Imageviewer.class); 
       Bundle bundle = new Bundle(); 
        String par=myimageadpter.getpath(position); 
          bundle.putString("imagepath", par); 
       intent.putExtras(bundle); 
       startActivityForResult(intent, 0); 

      } 
     }); 

그리고 여기가

,

가 가능한 경우 파일 생성 날짜를 얻으려고, 두 번째 활동

public class ImageViewer extends Activity { 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 


    Bundle bundle = this.getIntent().getExtras(); 

    String s=bundle.getString("imagepath"); 
    Bitmap Imagefrompath = BitmapFactory.decodeFile(s); 
      ImageView img=(ImageView) findViewById(R.id.imageView1); 
      img.setImageBitmap(Imagefrompath); 


} 

} 

Answer 1

1. 검사입니다 사용 가능하면 마지막으로 수정 한 날짜로 이동하십시오.

.

File file = new File(filePath); 
if(file.exists()) //Extra check, Just to validate the given path 
{ 
    ExifInterface intf = null; 
    try 
    { 
     intf = new ExifInterface(filePath); 
     if(intf != null) 
     { 
      String dateString = intf.getAttribute(ExifInterface.TAG_DATETIME); 
      Log.i("Dated : "+ dateString.toString()); //Dispaly dateString. You can do/use it your own way   
     } 
    } 
    catch 
    { 
    } 
    if(intf == null) 
    { 
     Date lastModDate = new Date(file.lastModified()); 
     Log.i("Dated : "+ lastModDate.toString());//Dispaly lastModDate. You can do/use it your own way 
    } 
}