alert box in android is not working - java

The code is not working. Please help me. It print the replace all string, but further code is not running.
when I debug this, there is no error in the code. It will show the code of alert box.
if(count>0)
{
System.out.println("replace all string name ");
// final Intent intent_ul=new Intent(this, UploadExcel.class);
AlertDialog.Builder alertDialogBuilder_ue = new AlertDialog.Builder(this);
alertDialogBuilder_ue.setTitle("Alert!!");
alertDialogBuilder_ue
.setMessage("Are you sure you want to Replace all the data related to this style ? ")
.setCancelable(false)
.setPositiveButton("Yes",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
mySQLiteAdapter.openToWrite();
mySQLiteAdapter.delete_style_measurement(style_no);
Log.d("","yes click");
count=0;
mySQLiteAdapter.close();
}
})
.setNegativeButton("No",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
Log.d("","No click");
count++;
dialog.cancel();
// startActivity(intent_ul);
//finish();
}
});
}

Add these lines before the end of if condition
AlertDialog alertDialog = alertDialogBuilder_ue.create();
alertDialog.show();

You need to add
alertDialogBuilder_ue.show();
in your code

Check with this code. This code working for me
Context context = CurrentActivity.this;
AlertDialog.Builder ad = new AlertDialog.Builder(context);
ad.setTitle("Application");
ad.setMessage("Do you want to proceed?");
ad.setPositiveButton("Yes", new OnClickListener()
{
public void onClick(DialogInterface dialog, int arg1)
{
}
});
ad.setNegativeButton("Cancel", new OnClickListener()
{
public void onClick(DialogInterface dialog, int arg1)
{
}
});
ad.setCancelable(false);
ad.show();

In your code adding alertDialogBuilder_ue.show(); should make the dialog appear.
By some people it has been suggested that you have to use alertDialogBuilder_ue.create(); to get a handle to the AlertDialog that you can then use the .show() method on.
Both are possibilities but you don't have to use the .create() option if you don't need a handle to the AlertDialog

Related

How to show AlertDialog even if Activity is on background?

I have an AlertDialog and I want to show it even if the user is visiting another activity.
This is AlertDialog:
AlertDialog.Builder builder = new AlertDialog.Builder(context.getApplicationContext());
builder.setMessage("Message").setCancelable(
false).setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
}).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
}
});
AlertDialog alert = builder.create();
alert.show();
You can create a method in utils class and pass context, so that you can use dialog in required class, but precaution need to take with life cycles to avoid memory leaks.

Android Adapter AlertDialog error

I have the following code inside an Adapter class I use for a listview in another class.
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setTitle("Introduceti parola:");
final EditText input = new EditText(getContext());
input.setInputType(InputType.TYPE_CLASS_TEXT);
builder.setView(input);
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which)
{
hash.put("name", Rooms.name);
hash.put("parola", input.getText().toString());
site = siteul + "/join";
new ATask((ViewHolder) v.getTag()).execute(site);
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
The problem is that when I trigger the action I get this error at the builder.show() line
android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
I thought the getContext() was at fault, but it doesn't generate any error in this code in the same Adapter class:
Toast.makeText(getContext(), "Cool message!", Toast.LENGTH_LONG).show();
What could be the problem then?
Replace getContext() with ActivityName.this.

Android: Cannot set TextView for Title

I am using the technique brought up in previous StackOverflow questions, which suggest using TextViews and setting properties in them as the parameter for setTitle in an AlertDialog. I need this so I can style the font of the title.
The problem is that Android Studio says that it
cannot resolve method android.widget.TextView
Below is my code:
TextView settingsTitle = new TextView(this);
settingsTitle.setText("Settings");
settingsTitle.setTypeface(Typeface.createFromFile("monospace"));
new AlertDialog.Builder(this)
.setTitle(settingsTitle)
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// continue with delete
}
})
.setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// do nothing
}
})
.setIcon(android.R.drawable.ic_dialog_alert)
.show();
Replace your code as
new AlertDialog.Builder(this)
.setTitle(settingsTitle.getText().toString())
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// continue with delete
}
})
as there is no such method called setTitle() which has an argument of type TextView.
Thus use, settingsTitle.getText().toString() which gets the String in the TextView and use that to set the title like
setTitle(settingsTitle.getText().toString())
Read more about it in the docs

Android AlertDialog how to block second click on the ok button?

Example:
System.out.println("in!");
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage("test!!!");
dialog.setPositiveButton(R.string.dialog_ok,
new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
System.out.println("Only one click!");
}
});
dialog.show();
Out:
in!
in!
Only one click!
Only one click!
Only one click!
Only one click!
Get the button (positive) and set enabled to false.
System.out.println("in!");
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage("test!!!");
dialog.setPositiveButton(R.string.dialog_ok,
new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// disable on 1st click;
final AlertDialog alertDialog = (AlertDialog)dialog;
alertDialog.getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(false);
System.out.println("Only one click!");
}
});
dialog.show();
What i don't understand is why someone could click a second time on an alertdialog, because teh buttons are supposed to close the dialog after performing some action.
Why do you not close the dialog with
dialog.dismiss()
?
You need to disable it. I recommend a flag, which must be stored at the class level.
Boolean hasBeenClicked=false;
System.out.println("in!");
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setMessage("test!!!");
dialog.setPositiveButton(R.string.dialog_ok,
new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
if (!hasBeenClicked)
{
hasBeenClicked=true;
System.out.println("Only one click!");
}
}
});
dialog.show();

How to raise a Toast on top of a AlertDialog?

I am validating an AlertDialog, and I would like to raise a Toast on top of the AlertDialog display.
I have this code, but the Toast is displayed on the activity
new AlertDialog.Builder(this).setTitle(R.string.contact_groups_add)
.setView(addView).setPositiveButton(R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int whichButton) {
if (wrapper.getTitle().length()>0)
{
processAdd(wrapper);
} else {
Toast.makeText(getApplicationContext(), "Name is required", Toast.LENGTH_SHORT).show();
}
}
}).setNegativeButton(R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int whichButton) {
// ignore, just dismiss
}
}).show();
Instead of using AdvertDialog.Builder, you can create a custom dialog which will behave like a dialog, but is in fact a normal activity. Your toasts should be drawn normally on top of this.
Had this problem myself as well, when I wanted to show a validation message within a dialog.
The answer that seanhodges gave is probably the cleaner and better way. But a seperate activity wasnt practical for me, so i came up with this solution.
Anyway, you can use the AlerDialog.Builder, and show a toast.
If you override the OnClickListener of the button the you want to trigger the toast, you can show a toast on top of a dialog.
An example;
public void showToastOnDialog(final Context context) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("Dialog title");
builder.setMessage("Dialog message");
builder.setPositiveButton(android.R.string.ok, new OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// Do nothing, you will be overriding this anyway
}
});
builder.setNegativeButton(android.R.string.cancel,
new OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// You can implement code here, because you wont be
// overriding this
}
});
final AlertDialog dialog = builder.create();
// Make sure you show the dialog first before overriding the
// OnClickListener
dialog.show();
// Notice that I`m not using DialogInterface.OnClicklistener but the
// View.OnClickListener
dialog.getButton(Dialog.BUTTON_POSITIVE).setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast toast = Toast.makeText(context,
"I`m a toast on top of a dialog.",
Toast.LENGTH_LONG);
toast.show();
// Because you are overriding the OnClicklistener, the
// dialog will not auto dismiss
// after clicking
dialog.dismiss();
}
});
}
Try this:
AlertDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_PHONE);

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