我对 Json 很陌生。我试图理解互联网上的例子。所以我正在为自己做一个翻译（Yandex 翻译）。但是我有问题我将源代码复制并粘贴到我的项目中。当我点击我的按钮时，文本将是我的文本视图（正在翻译）现在我无法为我的文本视图获取翻译字符串。我怎样才能得到它？
我的 TranslatorBackgroundTask AsyncTask （它不是内部类）：
TranslatorBackgroundTask(Context ctx){
this.ctx = ctx;
}
@Override
protected String doInBackground(String... params) {
//String variables
String textToBeTranslated = params[0];
String languagePair = params[1];
String jsonString;
try {
//Set up the translation call URL
String yandexKey =
String yandexUrl = "https://translate.yandex.net/api/v1.5/tr.json/translate?key=" + yandexKey
+ "&text=" + textToBeTranslated + "&lang=" + languagePair;
URL yandexTranslateURL = new URL(yandexUrl);
//Set Http Conncection, Input Stream, and Buffered Reader
HttpURLConnection httpJsonConnection = (HttpURLConnection) yandexTranslateURL.openConnection();
InputStream inputStream = httpJsonConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
//Set string builder and insert retrieved JSON result into it
StringBuilder jsonStringBuilder = new StringBuilder();
while ((jsonString = bufferedReader.readLine()) != null) {
jsonStringBuilder.append(jsonString + "\n");
}
//Close and disconnect
bufferedReader.close();
inputStream.close();
httpJsonConnection.disconnect();
//Making result human readable
String resultString = jsonStringBuilder.toString().trim();
//Getting the characters between [ and ]
resultString = resultString.substring(resultString.indexOf('[')+1);
resultString = resultString.substring(0,resultString.indexOf("]"));
//Getting the characters between " and "
resultString = resultString.substring(resultString.indexOf("\"")+1);
resultString = resultString.substring(0,resultString.indexOf("\""));
Log.d("Translation Result:", resultString);
return jsonStringBuilder.toString().trim() ;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected void onPostExecute(String result) {
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
我的主要活动：
cevir_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String yazı_string = yazı_EditText.getText().toString();
// trans(yazı_string,language);
String languagePair = "en-fr";
Translate(yazı_string,languagePair);
}
});
private void Translate(String textToBeTranslated, String languagePair) {
TranslatorBackgroundTask translatorBackgroundTask= new TranslatorBackgroundTask(context);
AsyncTask<String, Void, String> translationResult = translatorBackgroundTask.execute(textToBeTranslated,languagePair);
try {
String translationResults = translatorBackgroundTask.execute(textToBeTranslated, languagePair).get();
cevirilmis_tTextView.setText(translationResults);
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
Log.d("Translation Result", String.valueOf(translationResult));
}