I am sending some data to php
server and performing some database
operations and returns a json
data to android app after insert
operations in database
Database process is successful but i can't get the json response in android! I am using AsyncTask in this code below.
try {
//connect to php and send data code...
HttpResponse response = httpclient.execute(httppost);
InputStream inputStream = response.getEntity().getContent();
String result = convertInputStreamToString(inputStream);
if (result != null) {
try {
JSONObject json = new JSONObject(result);
Log.i("json", json.getString("insert_sucss"));
if (json.has("insert_err")) {
Toast.makeText(RegisterActivity.this, json.getString("insert_err"), Toast.LENGTH_LONG).show();
}
if (json.has("insert_sucss")) {
Toast.makeText(RegisterActivity.this, json.getString("insert_sucss"), Toast.LENGTH_LONG).show();
}
}
catch (JSONException e)
{
e.printStackTrace();
}
}
}
catch (Exception e)
{
Log.e("log_tag", "Error: " + e.toString());
}
return null;
}
private String convertInputStreamToString(InputStream inputStream) {
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder builder = new StringBuilder();
String line = "";
while ((line = reader.readLine()) != null) {
builder.append(line);
}
return builder.toString();
}
catch (IOException e) {
e.printStackTrace();
}
return null;
}
The getString() method throws exception if key not found. Instead use the has() method.
Remove the log statement Log.i("json", json.getString("insert_sucss"));
or change to json.has("insert_sucss")
Also if you're only sending 2 error codes (insert_sucss and insert_err) change the if conditions to something like this
if (json.has("insert_err"))
{
Toast.makeText(RegisterActivity.this, json.getString("insert_err"), Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(RegisterActivity.this, json.getString("insert_sucss"), Toast.LENGTH_LONG).show();
}
otherwise cover all possibilities like this
if (json.has("insert_err"))
{
Toast.makeText(RegisterActivity.this, json.getString("insert_err"), Toast.LENGTH_LONG).show();
}
else if(json.has("insert_sucss"))
{
Toast.makeText(RegisterActivity.this, json.getString("insert_sucss"), Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(RegisterActivity.this, "Unexpected Error", Toast.LENGTH_LONG).show();
}
I found this problem I am calling it from a worker thread.and this is wrong
I fixed my code
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(G.context, "text", Toast.LENGTH_LONG).show();
}
});
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