/**
* Get pictures under directory of strPath
* @param strPath
* @return list
*/
public List<STRING> getPictures(final String strPath) {
List<STRING> list = new ArrayList<STRING>();
File file = new File(strPath);
File[] files = file.listFiles();
if (files == null) {
return null;
}
for(int i = 0; i < files.length; i++) {
final File f = files[i];
if(f.isFile()) {
try{
int idx = f.getPath().lastIndexOf(".");
if (idx <= 0) {
continue;
}
String suffix = f.getPath().substring(idx);
if (suffix.toLowerCase().equals(".jpg") ||
suffix.toLowerCase().equals(".jpeg") ||
suffix.toLowerCase().equals(".bmp") ||
suffix.toLowerCase().equals(".png") ||
suffix.toLowerCase().equals(".gif") )
{
list.add(f.getPath());
}
} catch(Exception e) {
e.printStackTrace();
}
}
}
return list;
}
2.调用上述方法获取sd卡下的图片并显示
List<STRING> list = getPictures(Environment.getExternalStorageDirectory() + "");
if (list != null) {
Log.d(TAG, "list.size = " + list.size());
for (int i = 0; i < list.size(); i++) {
Bitmap bm = BitmapFactory.decodeFile(list.get(i));
int top = 30;
if (i > 0) {
top += BitmapFactory.decodeFile(list.get(i - 1)).getHeight() + 2;
}
canvas.drawBitmap(bm, 0, top, paint);
}
}
else {
Log.d(TAG, "list is null!!!");
}
