Android java AsyncTask wait onPostExecute return method
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I wrote the following code, I'm looking for a way to make an http call, process the data and let me return the result.
The problem being an async operation, when I do html.getTi(), gives me no value because the operation is still running and I'm faster.
I tried to use: synchronized (this) {..
of java but it does not seem to work.
I thought about using a wait loop:
while(html.getFlg ()! = false);
but it takes too many resources and hangs.
I was thinking of using callbacks or promises, but I do not know if it's the right way.
Some advice?
Main.java
Html html = new Html().execute("...");
html.getTi();//return element ArrayList<ListItem>
Html.java
public class Html extends Activity {
ArrayList<ListItem> listItemList = new ArrayList<ListItem>();
public Html execute(String str) {
new Http().execute(str);
return this;
}
public ArrayList<ListItem> getTi() {
return listItemList;
}
public class Http extends AsyncTask<String, Void, Void> {
@Override
protected void onPreExecute() { super.onPreExecute(); }
@Override
protected Void doInBackground(String... params) {
...
}
@Override
protected void onPostExecute(Void result) {
...
}
}
}
java
android android-asynctask callback async-await asked Nov 16 '18 at 14:02
PaulPaul
154210
add a comment |
I wrote the following code, I'm looking for a way to make an http call, process the data and let me return the result.
The problem being an async operation, when I do html.getTi(), gives me no value because the operation is still running and I'm faster.
I tried to use: synchronized (this) {..
of java but it does not seem to work.
I thought about using a wait loop:
while(html.getFlg ()! = false);
but it takes too many resources and hangs.
I was thinking of using callbacks or promises, but I do not know if it's the right way.
Some advice?
Main.java
Html html = new Html().execute("...");
html.getTi();//return element ArrayList<ListItem>
Html.java
public class Html extends Activity {
ArrayList<ListItem> listItemList = new ArrayList<ListItem>();
public Html execute(String str) {
new Http().execute(str);
return this;
}
public ArrayList<ListItem> getTi() {
return listItemList;
}
public class Http extends AsyncTask<String, Void, Void> {
@Override
protected void onPreExecute() { super.onPreExecute(); }
@Override
protected Void doInBackground(String... params) {
...
}
@Override
protected void onPostExecute(Void result) {
...
}
}
}
java
android android-asynctask callback async-await asked Nov 16 '18 at 14:02
PaulPaul
154210
You have tons of ways of doing it. For me, the simplest one is just to add a listener reference to call after you finish the task.
– haroldolivieri
Nov 16 '18 at 14:08
add a comment |
I wrote the following code, I'm looking for a way to make an http call, process the data and let me return the result.
The problem being an async operation, when I do html.getTi(), gives me no value because the operation is still running and I'm faster.
I tried to use: synchronized (this) {..
of java but it does not seem to work.
I thought about using a wait loop:
while(html.getFlg ()! = false);
but it takes too many resources and hangs.
I was thinking of using callbacks or promises, but I do not know if it's the right way.
Some advice?
Main.java
Html html = new Html().execute("...");
html.getTi();//return element ArrayList<ListItem>
Html.java
public class Html extends Activity {
ArrayList<ListItem> listItemList = new ArrayList<ListItem>();
public Html execute(String str) {
new Http().execute(str);
return this;
}
public ArrayList<ListItem> getTi() {
return listItemList;
}
public class Http extends AsyncTask<String, Void, Void> {
@Override
protected void onPreExecute() { super.onPreExecute(); }
@Override
protected Void doInBackground(String... params) {
...
}
@Override
protected void onPostExecute(Void result) {
...
}
}
}
java
android android-asynctask callback async-await asked Nov 16 '18 at 14:02
PaulPaul
154210
I wrote the following code, I'm looking for a way to make an http call, process the data and let me return the result.
The problem being an async operation, when I do html.getTi(), gives me no value because the operation is still running and I'm faster.
I tried to use: synchronized (this) {..
of java but it does not seem to work.
I thought about using a wait loop:
while(html.getFlg ()! = false);
but it takes too many resources and hangs.
I was thinking of using callbacks or promises, but I do not know if it's the right way.
Some advice?
Main.java
Html html = new Html().execute("...");
html.getTi();//return element ArrayList<ListItem>
Html.java
public class Html extends Activity {
ArrayList<ListItem> listItemList = new ArrayList<ListItem>();
public Html execute(String str) {
new Http().execute(str);
return this;
}
public ArrayList<ListItem> getTi() {
return listItemList;
}
public class Http extends AsyncTask<String, Void, Void> {
@Override
protected void onPreExecute() { super.onPreExecute(); }
@Override
protected Void doInBackground(String... params) {
...
}
@Override
protected void onPostExecute(Void result) {
...
}
}
}
java
android android-asynctask callback async-await java
android android-asynctask callback async-await asked Nov 16 '18 at 14:02
PaulPaul
154210
asked Nov 16 '18 at 14:02
PaulPaul
154210
asked Nov 16 '18 at 14:02
PaulPaul
154210
asked Nov 16 '18 at 14:02
PaulPaul
154210
asked Nov 16 '18 at 14:02
PaulPaul
154210
154210
You have tons of ways of doing it. For me, the simplest one is just to add a listener reference to call after you finish the task.
– haroldolivieri
Nov 16 '18 at 14:08
add a comment |
You have tons of ways of doing it. For me, the simplest one is just to add a listener reference to call after you finish the task.
– haroldolivieri
Nov 16 '18 at 14:08
You have tons of ways of doing it. For me, the simplest one is just to add a listener reference to call after you finish the task.
– haroldolivieri
Nov 16 '18 at 14:08
You have tons of ways of doing it. For me, the simplest one is just to add a listener reference to call after you finish the task.
– haroldolivieri
Nov 16 '18 at 14:08
add a comment |
1 Answer
1
active
oldest
votes
You can simply use library okHttp
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(YOUR_URL)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
if (!response.isSuccessful()) {
throw new IOException("Unexpected code " + response);
} else {
// do something wih the result
}
}
answered Nov 16 '18 at 14:21
OnixOnix
4579
I'm trying to see if it works, but if I wanted to set it as a method and pass a callback or a promise as an argument, how can I do?
– Paul
Nov 16 '18 at 16:45
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can simply use library okHttp
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(YOUR_URL)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
if (!response.isSuccessful()) {
throw new IOException("Unexpected code " + response);
} else {
// do something wih the result
}
}
answered Nov 16 '18 at 14:21
OnixOnix
4579
I'm trying to see if it works, but if I wanted to set it as a method and pass a callback or a promise as an argument, how can I do?
– Paul
Nov 16 '18 at 16:45
add a comment |
You can simply use library okHttp
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(YOUR_URL)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
if (!response.isSuccessful()) {
throw new IOException("Unexpected code " + response);
} else {
// do something wih the result
}
}
answered Nov 16 '18 at 14:21
OnixOnix
4579
I'm trying to see if it works, but if I wanted to set it as a method and pass a callback or a promise as an argument, how can I do?
– Paul
Nov 16 '18 at 16:45
add a comment |
You can simply use library okHttp
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(YOUR_URL)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
if (!response.isSuccessful()) {
throw new IOException("Unexpected code " + response);
} else {
// do something wih the result
}
}
answered Nov 16 '18 at 14:21
OnixOnix
4579
You can simply use library okHttp
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(YOUR_URL)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
if (!response.isSuccessful()) {
throw new IOException("Unexpected code " + response);
} else {
// do something wih the result
}
}
answered Nov 16 '18 at 14:21
OnixOnix
4579
answered Nov 16 '18 at 14:21
OnixOnix
4579
answered Nov 16 '18 at 14:21
OnixOnix
4579
answered Nov 16 '18 at 14:21
OnixOnix
4579
4579
I'm trying to see if it works, but if I wanted to set it as a method and pass a callback or a promise as an argument, how can I do?
– Paul
Nov 16 '18 at 16:45
add a comment |
I'm trying to see if it works, but if I wanted to set it as a method and pass a callback or a promise as an argument, how can I do?
– Paul
Nov 16 '18 at 16:45
I'm trying to see if it works, but if I wanted to set it as a method and pass a callback or a promise as an argument, how can I do?
– Paul
Nov 16 '18 at 16:45
I'm trying to see if it works, but if I wanted to set it as a method and pass a callback or a promise as an argument, how can I do?
– Paul
Nov 16 '18 at 16:45
add a comment |
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You have tons of ways of doing it. For me, the simplest one is just to add a listener reference to call after you finish the task.
– haroldolivieri
Nov 16 '18 at 14:08