Greetings all,
I have searched high & low and have not come up with the answer to
this, so please forgive me if I’ve missed something – I’m cross-eyed
at this point.
I’m new to Android, but doing pretty well so far. I’m having a
problem displaying an AlertDialog inside of a thread. No matter what
I try, it crashes. If I use this code in the "onCreate" sub, it
works. The problem code is inside the “public void run()” section.
If I take out all the code relating to the AlertDialog, the error goes
away. I understand that I’m supposed to create the dialog using the
context of the Activity, and I thought my code does that – but
obviously I’ve missed something. If someone could explain to me what
I’m doing wrong, I would be eternally grateful.
I’ve had to remove a few items from the code for privacy reasons, they
mention my company name and the product I’m developing, etc etc.
Here’s the code:
------------------------------------------------------------------------------------------------------------------
package com.[removed for privacy].[removed for privacy];
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URISyntaxException;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.telephony.TelephonyManager;
import android.view.Menu;
import android.view.MenuItem;
public class Init extends Activity implements Runnable {
public String DROIDPHONENUMBER;
public String HTTP_RESULT;
public int MINUTESLEFT;
public ProgressDialog pd;
private String getMyPhoneNumber() {
TelephonyManager mTelephonyMgr =
(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
return mTelephonyMgr.getLine1Number();
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.init);
DROIDPHONENUMBER = getMyPhoneNumber();
pd = ProgressDialog.show(this, "Test Title", "Test Message…",
true, false);
Thread getBalanceThread = new Thread(this);
getBalanceThread.start();
}
public String getUrlData(String url) {
String websiteData = null;
try {
DefaultHttpClient client = new DefaultHttpClient();
URI uri = new URI(url);
HttpGet method = new HttpGet(uri);
HttpResponse res = client.execute(method);
InputStream data = res.getEntity().getContent();
websiteData = generateString(data);
}
catch (ClientProtocolException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
catch (URISyntaxException e) {
e.printStackTrace();
}
return websiteData;
}
public String generateString(InputStream stream) {
InputStreamReader reader = new InputStreamReader(stream);
BufferedReader buffer = new BufferedReader(reader);
StringBuilder sb = new StringBuilder();
try {
String cur;
while ((cur = buffer.readLine()) != null) {
sb.append(cur);
}
}
catch (IOException e) {
e.printStackTrace();
}
try {
stream.close();
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
/** MENU FUNCTIONS **/
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add("Close");
return true;
}
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getTitle() == "Close") {
finish();
}
return true;
}
public void run() {
HTTP_RESULT = getUrlData("https://[url removed for
privacy]" + DROIDPHONENUMBER);
AlertDialog.Builder builder = new
AlertDialog.Builder(Init.this);
builder.setTitle("Test Title");
builder.setMessage(HTTP_RESULT);
builder.setPositiveButton("OK", new
DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
return;
}
});
AlertDialog dialog = builder.create();
dialog.setOwnerActivity(Init.this);
dialog.show();
handler.sendEmptyMessage(0);
}
private Handler handler = new Handler() {
public void handleMessage(Message msg) {
pd.dismiss();
}
};
}
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