onSaveInstanceState保存数据，onRestoreInstanceState取数据

/** 
 * 存图片的路径 
 */  
@Override  
protected void onSaveInstanceState(Bundle outState) {  
    if (sdImageFile != null) {  
        Timber.i("onSaveInstanceState -- not -- null");  
        outState.putString(UPLOAD_PHOTO_STATUS, sdImageFile.getAbsolutePath());  
    }  
    outState.putString(UPLOAD_PHOTO_LIST_ID, listId);  
    Timber.i("onSaveInstanceState----outState");  
    super.onSaveInstanceState(outState);  
}  
  
/** 
 * 取图片的路径 
 */  
@Override  
protected void onRestoreInstanceState(Bundle savedInstanceState) {  
    super.onRestoreInstanceState(savedInstanceState);  
    Timber.i("onRestoreInstanceState");  
    String photoStatus = savedInstanceState.getString(UPLOAD_PHOTO_STATUS);  
    if (sdImageFile == null && !TextUtils.isEmpty(photoStatus)) {  
        Timber.i("new File(photoStatus);");  
        sdImageFile = new File(photoStatus);  
    }  
    String photoListId = savedInstanceState.getString(UPLOAD_PHOTO_LIST_ID);  
    if (TextUtils.isEmpty(listId) && !TextUtils.isEmpty(photoListId)) {  
        Timber.i("new File(photoListId);");  
        listId = photoListId;  
    }  
}