Как установить путь к каталогу

Question

Я хочу установить личные изображения в drawable.

package info.androidhive.imageslider.helper; 

import java.util.Arrays; 
import java.util.List; 

public class AppConstant { 

// Number of columns of Grid View 
public static final int NUM_OF_COLUMNS = 3; 

// Gridview image padding 
public static final int GRID_PADDING = 8; // in dp 

// SD card image directory 
public static final String PHOTO_ALBUM = "NAT"; 
public static final String PHOTO_ALBUM =Environment.getExternalStorageDirectory().getPath()+ "/DCIM/"+"/100ANDRO/"; 

// supported file formats list 
public static final List<String> FILE_EXTN = Arrays.asList("jpg", "jpeg", 
     "png"); 
} 

Answer 1

Попробуйте:

String PHOTO_ALBUM =Environment.getExternalStorageDirectory().getPath()+ "/DCIM/"+"/100ANDRO/"; 
File f = new File(PHOTO_ALBUM);   
File file[] = f.listFiles(); 
for (int i=0; i < file.length; i++) 
{ 
    String file_extension=file[i].getName().split("."); 
    if(file_extension[file_extension.length-1].equalsIgnoreCase("jpg")) 
    { 
    // code here set image to imageview 
     Bitmap bmp = BitmapFactory.decodeFile(file[i]); 
     //ImageView img; 
     //img.setImageBitmap(bmp); 
    } 
    else if(file_extension[file_extension.length-1].equalsIgnoreCase("png")) 
    { 
    // code here set image to imageview 
    } 
    //.. so on 
} 

Добавить разрешение на чтение Внешние устройства хранения

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 

Answer 2

Попробуйте как этот

 

public class PicAdapter extends BaseAdapter { 

    //use the default gallery background image 
    int defaultItemBackground; 

    //gallery context 
    private Context galleryContext; 

    //array to store bitmaps to display 
    private Bitmap[] imageBitmaps; 
    //placeholder bitmap for empty spaces in gallery 
    Bitmap placeholder; 

    //constructor 
    public PicAdapter(Context c) { 

     //instantiate context 
     galleryContext = c; 

     //create bitmap array 

     String folderPath = Environment.getExternalStorageDirectory() + "/DCIM/"+"/100ANDRO/"; 
     File filePath = new File(folderPath); 
     File[] fileList = filePath.listFiles(); 
     imageBitmaps = new Bitmap[fileList.length]; 
     for(int j = 0; j < fileList.length; j++) { 
      imageBitmaps[j] = BitmapFactory.decodeFile(fileList[j].toString()); 
     } 
     //System.out.println("==styleCode==" + styleCode + "=strExecutive="+ strExecutive); 
     //decode the placeholder image 
     // placeholder = BitmapFactory.decodeFile("/sdcard/"+strExecutive+"/"+styleCode+"/"); 
     picView.setImageBitmap(placeholder); 
     // placeholder = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher); 

     //set placeholder as all thumbnail images in the gallery initially 
     for(int i=0; i<imageBitmaps.length; i++) 
      imageBitmaps[i]=placeholder; 

     //get the styling attributes - use default Andorid system resources 
     TypedArray styleAttrs = galleryContext.obtainStyledAttributes(R.styleable.PicGallery); 
     //get the background resource 
     defaultItemBackground = styleAttrs.getResourceId(
       R.styleable.PicGallery_android_galleryItemBackground, 0); 
     //recycle attributes 
     styleAttrs.recycle(); 
    }