How to show AlertDialog even if Activity is on background? - java

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.

Related

How to know in dialog that another dialog is closed using this dialog inside java class in android?

I have dialog class, in that class I have one method that opens a dialog.
providerDialog.showProvidersDialog(customCategory.getCustCategoryId());
In that method I open another dialog (that is written in another class) to fill some information. Now dialog open and user filled details and I dismissed dialog from that method. Now I want to know in this current dialog class that another last opened dialog is closed so that I can get that details which I share using singleton and want to show in this class.
Current class method:
private void showCategoryInformationDialog() {
LayoutInflater li = LayoutInflater.from(context);
informationPromptsView = li.inflate(R.layout.row_category_information_layout, null);
android.app.AlertDialog.Builder alertDialogBuilder = new android.app.AlertDialog.Builder(context, R.style.dialogBoxStyle);
// alertDialogBuilder.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
alertDialogBuilder.setView(informationPromptsView);
inputBillProvider = informationPromptsView.findViewById(R.id.inputBillProvider);
inputConsumerNumber = informationPromptsView.findViewById(R.id.inputConsumerNumber);
name = informationPromptsView.findViewById(R.id.name);
inputBillProvider.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
alertDialogBuilder.setPositiveButton(context.getString(R.string.add), new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialogBuilder.setNegativeButton(context.getString(R.string.cancel), new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialogBuilder.show();
}
//I want to know that this below dialog is closed providerDialog.showProvidersDialog(customCategory.getCustCategoryId());
Another last opened dialog code:
Link: Cancel/dismiss alertdialog builder from any other method in same class in android?

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.

alert box in android is not working

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

AlertDialog.Builder show(), crash in click handler

My app opens a new view from the main view with:
Intent ElementsIntent = new Intent(this, ElementList.class);
startActivityForResult(ElementsIntent, 0);
which shows a list of elements and when pushing 1 of these elements a view opens up the same way as before with a new Activity. Inside this view I would like to show a AlertDialog in a button click handler, but when I call show() the app crashes.
I am pretty sure it has got somthing to do with the Context not being correct according to where I try and open the dialog, but I have tried making a static context from the main view, I have tried with element.this, which is the class connected to the activity, and I have tried getApplicationContext, and all of these result in an app crash.
I hope someone can explain what I am doing wrong.
Thanks.
Here is the AlertDialog code which crashes:
public void GoBackClickHandler(View v)
{
AlertDialog.Builder builder = new AlertDialog.Builder(ElementItem.this);
builder.setMessage("Skal ændringer i besvarelse gemmes?")
.setCancelable(false)
.setPositiveButton("Ja", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
if(inputIsValue())
{
UpdateELement task = new UpdateELement();
task.applicationContext = ElementItem.this;
task.execute(1);
}
}
})
.setNegativeButton("Nej", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
finish();
}
});
AlertDialog alert = builder.create();
alert.show();
}
If I move this code to the OnCreate, then the alert shows just fine and no app crash. It is only if I place it in a ClickHandler it crashes.
I finally found a soloution to this issue.
I had to save the context of the Activity in a variable in the onCreate method and then use this in the ClickHandler AlertDialog call, then everything works.
Hope this will be of help to someone else with this annoying problem.
public class SplashActivity extends AppCompatActivity implements DialogInterface.OnClickListener {
//Object to hold the listener instance
DialogInterface.OnClickListener listener;
#Override
protected void onCreate(Bundle savedInstanceState) {
//Assign this to listener.
listener = this;
handler.postDelayed(new Runnable() {
#Override
public void run() {
AlertDialog.Builder builder = new AlertDialog.Builder(SplashActivity.this);
builder.setTitle("Alert");
builder.setMessage("Alert Message...!");
//Here pass the listener object.
builder.setPositiveButton("OK", SplashActivity.this.listener);
builder.show();
}
});
}
#Override
public void onClick(DialogInterface dialog, int which) {
SplashActivity.this.finish();
}
}

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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