问题
guys. Can't output JSON string/object into TextView. Started programming in Android Studio few day ago, so...need your help, guys. I have mainActivity, AllProductsActivity and EditProductActivity. All product activity getting JSON array from mysql database and showing in ListView. After clicking on List Item it goes to EditProductActivity.That works fine. But i can't understand what i need to do with this error...
class GetProductDetails extends AsyncTask<String, String, JSONObject> {
//Show progress dialog
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(EditProductActivity.this);
pDialog.setMessage("Loading product details. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
//Getting detail info in background
protected JSONObject doInBackground(String... args) {
JSONObject product = null;
// check status success tag
int success;
try {
// parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("pid", pid));
// getting product from HTTP
JSONObject json = jsonParser.makeHttpRequest(url_product_details, "GET", params);
Log.d("Single Product Details", json.toString());
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// Getting detail info successful
JSONArray productObj = json.getJSONArray(TAG_PRODUCT);
// first object from JSON Array
product = productObj.getJSONObject(0);
} else {
// product with that pid not found
Toast.makeText(getApplicationContext(), "pid not found", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(getApplicationContext(), AllProductsActivity.class);
startActivity(intent);
}
} catch (JSONException e) {
e.printStackTrace();
}
return product;
}
/**
* After completing background task Dismiss the progress dialog
* *
*/
protected void onPostExecute(JSONObject product) {
if (product != null) {
setContentView(R.layout.activity_edit_product);
// product with this pid found
// Text View
txtName = (TextView) findViewById(R.id.showName);
txtPrice = (TextView) findViewById(R.id.showPrice);
txtDesc = (TextView) findViewById(R.id.showDescription);
// display product data in EditText
txtName.setText(product.getString(TAG_NAME));
txtPrice.setText(product.getString(TAG_PRICE));
txtDesc.setText(product.getString(TAG_DESCRIPTION));
}
// close progress dialog
pDialog.dismiss();
}
}
}
Error in:
txtName.setText(product.getString(TAG_NAME));
txtPrice.setText(product.getString(TAG_PRICE));
txtDesc.setText(product.getString(TAG_DESCRIPTION));
Unhandled exception: org.json.JSONException
回答1:
Add a try/catch
try {
txtName.setText(product.getString(TAG_NAME));
txtPrice.setText(product.getString(TAG_PRICE));
txtDesc.setText(product.getString(TAG_DESCRIPTION));
} catch (JSONException e) {
// Do something with the exception
}
来源:https://stackoverflow.com/questions/30289189/androidunhandled-exception-org-json-jsonexception