Question

我正在尝试从解析中的.txt文件中获取文本并将其转换为String并将文本放在textview中。我试着通过像图像一样的方式进行研究（AppetizerRecipe.java）

从图像中可以看出，我有一个由txt文件组成的列“配方”。 logcat显示该文件是从解析中检索的，当我点击它时，它会显示我的文件。我似乎无法将文本放到我的textview上。任何帮助将不胜感激。

onListItemClick：

@Override
protected void onListItemClick(ListView l, View v, int position, long
        id) {
    super.onListItemClick(l, v, position, id);

    ParseObject po = mAppetizers.get(position);

    ParseFile recipes = po.getParseFile("recipe");


    // TODO: Get fields from Parse
    String title = po.getString(AppetizerRecipe.ARG_NAME);
    String time = po.getString(AppetizerRecipe.ARG_TIME);
    String ID = po.getObjectId().toString();
        Log.d("Appetizer", "object: " + ID);

    Intent intent = new Intent(Appetizer.this, AppetizerRecipe.class);

    // TODO: Put extras
    intent.putExtra(AppetizerRecipe.ARG_NAME, title);
    intent.putExtra(AppetizerRecipe.ARG_TIME, time);
    intent.putExtra("ID", ID);
        Log.d("Appetizer", "object: " + ID);


    startActivity(intent); // TODO:  In other activity, get these extras
}

AppetizerRecipe.java

ParseQuery<ParseObject> gettext = new ParseQuery<>("Appetizers"); 
    gettext.addAscendingOrder("appetizer"); 
    gettext.whereEqualTo("ID", ID); 
    gettext.getInBackground(ID, new GetCallback<ParseObject>() {
        @Override
        public void done(ParseObject textobject, ParseException e) {
            if (e == null) {
                // success
                final ParseFile textObject = (ParseFile) textobject.get("recipe");
                textObject.getDataInBackground(new GetDataCallback() {
                    public void done(byte[] data, ParseException e) {
                        if (e == null) {
                            // use data for something

                        } else {

                        }
                    }
                });

            } else {
                // fail
                Log.d("test", "Error Message..." + e.getMessage());
            }
        }
    });

Answer 1

从String获得byte[]：

//your byte[] being data
String str = new String(data);

然后在String上设置TexView，如：

textView.setText(str);

从parse.com接收.txt文件并放入textview

1 个答案: