I have a custom Dialog in my app and I have a problem achieving the desired behavior. My Dialog has 4 Buttons. (Back, Valid, Modify and Restore). When the user clicks on Modify or Valid I would like to call another activity. So I am using Intent but it's crashing.
The error Log :
05-19 13:29:21.495: ERROR/DEBUGTAG(974): java.lang.NullPointerException 05-19 13:29:21.495: ERROR/DEBUGTAG(974):
at android.content.ComponentName.(ComponentName.java:75) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.content.Intent.(Intent.java:2551) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.booztermobile.activity.HeaderMailDisplayActivity.onClick(HeaderMailDisplayActivity.java:571) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.View.performClick(View.java:2364) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.View.onTouchEvent(View.java:4179) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.widget.TextView.onTouchEvent(TextView.java:6540) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.View.dispatchTouchEvent(View.java:3709) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.app.Dialog.dispatchTouchEvent(Dialog.java:643) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.os.Handler.dispatchMessage(Handler.java:99) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.os.Looper.loop(Looper.java:123) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at android.app.ActivityThread.main(ActivityThread.java:4363) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at java.lang.reflect.Method.invokeNative(Native Method) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at java.lang.reflect.Method.invoke(Method.java:521) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 05-19 13:29:21.495: ERROR/DEBUGTAG(974): at dalvik.system.NativeStart.main(Native Method)
My custom Dialog :
package com.android.booztermobile.services;
import com.android.booztermobile.R;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.widget.Button;
public class MailDialog extends Dialog {
private Button btnValid;
private Button btnBack;
private Button btnRestore;
private Button btnModify;
private Context context;
public MailDialog(Context cont) {
super(cont);
context = cont;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d("TestApp", "Dialog created");
setContentView(R.layout.dialog_classement);
btnValid = (Button) findViewById(R.id.btnValidClassement);
btnBack = (Button) findViewById(R.id.btnBackClassement);
btnRestore = (Button) findViewById(R.id.btnRestoreClassement);
btnModify = (Button) findViewById(R.id.btnModifyClassement);
}
}
and the activity (cut because too long):
//create dialog
public void getMailInformations(View v, Context context){
currentMail = (MailHeader) v.getTag();
dial = new MailDialog(context);
dial.setTitle("Classement");
dial.show();
btnValidClassement = (Button) dial.findViewById(R.id.btnValidClassement);
btnValidClassement.setOnClickListener(this);
}
/** the Onclick : */
public void onClick(View view) {
//THIS WORKS (Activity Button)
if (view == lblPreviousMails) {
positionList -= 20;
// create Intent
Intent defineIntentDisplayPreviousMails = new Intent(HeaderMailDisplayActivity.this, HeaderMailDisplayActivity.class);
//Create bundle to pass informations to the other activity
Bundle objetbundle = new Bundle();
objetbundle.putString("positionList", String.valueOf(positionList));
objetbundle.putStringArrayList("currentMails", seqnumList);
objetbundle.putString("uidh", uidh);
defineIntentDisplayPreviousMails.putExtras(objetbundle);
// call headermailDisplayActivity
HeaderMailDisplayActivity.this.startActivity(defineIntentDisplayPreviousMails);
}
//THIS DOESN'T WORKS (Dialog Button)
if(view == btnValidClassement){
try{
ClassementHandlerCall classement = new ClassementHandlerCall();
boolean mailClassify = classement.classifyMail(AuthentificationActivity.uidh,
String.valueOf(currentMail.getSeqnum()), null, null);
dial.dismiss();
if (mailClassify == true){
//create Intent
Intent defineIntentClassifyMails = new Intent(MailClassificationActivity.this, HeaderMailDisplayActivity.class);
// Object that allows to pass person's uidh and positionList onto HeaderMailDisplayActivity
Bundle objetbundle = new Bundle();
objetbundle.putString("uidh",uidh);
objetbundle.putString("positionList", String.valueOf(positionList));
defineIntentClassifyMails.putExtras(objetbundle);
// call HeaderMailDisplayActivity
MailClassificationActivity.this.startActivity(defineIntentClassifyMails);
}
}catch(Exception e){
// TODO Auto-generated catch block
Log.e("DEBUGTAG","Error occured", e);
e.printStackTrace();
}
}
}
