我只想问是否可以在我的 Asyntask 的 onPostExecute 中使用我的自定义吐司在 android 中。如果是，那怎么办？我试图把它放在 onPostExecute 上，但我得到了很多红线。这是我的自定义吐司代码：
Typeface tfR= Typeface.createFromAsset(getAssets(), "Gothic_Regular.TTF");
LayoutInflater inflater = getLayoutInflater();
View layouttoast = inflater.inflate(R.layout.toast_bg, (ViewGroup)findViewById(R.id.toastAttribute));
TextView msg = ((TextView) layouttoast.findViewById(R.id.txt_toast));
msg.setTypeface(tfR);
msg.setText(toast_msg);
msg.setTextSize(TypedValue.COMPLEX_UNIT_PX,16);
Toast mytoast = new Toast(getBaseContext());
mytoast.setView(layouttoast);
mytoast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
mytoast.setDuration(Toast.LENGTH_SHORT);
mytoast.show();
然后我想把它放在这里：
public class DoPost extends AsyncTask<String, Void, Boolean>
{
Exception exception = null;
Context mContext = null;
. . . . .
public DoPost(Context context, String username, String password,
String reportcode, String remarks, String date, String province,
String infotype, String competitor, ArrayList<String> brands,
ArrayList<String> segments)
{
mContext = context;
. . . .
databaseHandler = new DatabaseHandler(context);
if (databaseHandler != null)
{
databaseHandler.close();
databaseHandler.createDB();
}
}
protected void onPreExecute()
{
progressDialog = new ProgressDialog(mContext);
progressDialog.setMessage("Uploading attachment details....");
progressDialog.show();
progressDialog.setCancelable(false);
}
@Override
protected Boolean doInBackground(String... arg0)
{
try {
JSONObject jObject = new JSONObject();
Log.d("DoPost Constants.FILE_URI", Constants.FILE_URI.toString());
Log.d("DoPost create SELECTEDFILE URI", SelectedFiles.listFileUri.toString());
Log.d("DoPost create SELECTEDFILE FILENAME", SelectedFiles.listFileName.toString());
// String filename = "Chapt-19.pdf";
String filename = "";
try {
JSONArray jArraySubrands = new JSONArray();
JSONArray jArrayConsumerSegments = new JSONArray();
JSONArray jArrayReportUpload = new JSONArray();
for (int i = 0; i < Constants.SHARED_PREFERENCES_SUBBRANDS.size(); i++)
{
JSONObject brand = new JSONObject();
brand.put("Id", _brands.get(i));
jArraySubrands.put(brand);
}
for (int j = 0; j < Constants.SHARED_PREFERENCES_SEGMENTS.size(); j++)
{
JSONObject consumerSegments = new JSONObject();
consumerSegments.put("Id", _segments.get(j));
jArrayConsumerSegments.put(consumerSegments);
}
for (int i = 0; i < Constants.ARRAYLIST_FILENAME.size(); i++)
{
JSONObject jObjectReportUpload = new JSONObject();
filename = Constants.ARRAYLIST_FILENAME.get(i);
jObjectReportUpload.put("ReportUploadId", 0);
jObjectReportUpload.put("Filename", filename);
jObjectReportUpload.put("TempFilename", filename);
jObjectReportUpload.put("Description", "Image Testing");
jObjectReportUpload.put("ReportUploadTypeId", 1);
jObjectReportUpload.put("ReportId", 0);
jArrayReportUpload.put(jObjectReportUpload);
Log.d("filename: ", filename);
}
jObject.put("ReportId", 0);
jObject.put("ReportCode", _code);
jObject.put("Title", "Mobile Developer");
jObject.put("Remarks", _remarks);
jObject.put("DateObserved", _date);
jObject.put("ProvinceId", _province);
jObject.put("InformationTypeId", _infotype);
jObject.put("ReportTypeId", 1);
jObject.put("IsCompetitor", _competitor);
jObject.put("SubBrands", jArraySubrands);
jObject.put("ConsumerSegments", jArrayConsumerSegments);
jObject.put("ReportUploads", jArrayReportUpload);
} catch (Exception e)
{
e.printStackTrace();
}
ResponseHandler<String> resonseHandler = new BasicResponseHandler();
HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters, 15000);
HttpConnectionParams.setSoTimeout(httpParameters, 15000);
HttpPost httpPost = new HttpPost("http://phsjghhghghulchghg4.hgh.com:1214/api/reports");
HttpClient httpclient = new DefaultHttpClient(httpParameters);
httpPost.addHeader("Authorization","Basic "+ Base64.encodeToString((_username + ":" + _password).getBytes(),Base64.NO_WRAP));
httpPost.setHeader("Content-Type", "application/json");
httpPost.setHeader("Accept", "application/json");
httpPost.setEntity(new ByteArrayEntity(jObject.toString().getBytes(HTTP.UTF_8)));
String response = httpclient.execute(httpPost).toString();
Log.i("response: ", response);
Log.i("JSON", jObject.toString());
} catch (ClientProtocolException e)
{
e.printStackTrace();
Log.e("Header","ClientProtocolException in callWebService(). "+ e.getMessage());
error = String.valueOf(e);
return false;
}
catch (IOException e)
{
e.printStackTrace();
Log.e("Header","IOException in callWebService(). " + e.getMessage());
error = String.valueOf(e);
return false;
}
return true;
}
protected void onPostExecute(Boolean valid)
{
progressDialog.dismiss();
Log.d("RESULT", String.valueOf(valid));
if(valid){
//Customzize toast here.
new DoPost(mContext,_username, _password, _code, _remarks, _date, _province, _infotype,_competitor,_brands, _segments).execute();
}else{
//Customzize toast here.
}
}