调用系统图库：

Intent intent = new Intent(Intent.ACTION_PICK,MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

startActivityForResult(intent, REQUEST_CODE_IMAGE);

获取图片路径

@Override

 protected void onActivityResult(int requestCode, int resultCode, Intent data) {

   super.onActivityResult(requestCode, resultCode, data);

   if (requestCode == REQUEST_CODE_IMAGE && resultCode == RESULT_OK) {

      Uri uri = data.getData();

      Cursor cursor = getContentResolver().query(uri, null, null, null,null);

      if (cursor != null && cursor.moveToFirst()) {

          String path = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA));

    }

   }

 }