CODEWITHSUNDEEP
androiddialogalert
anna
anna

Reputation: 95

Android: write a class for using alert dialog every where

I am new in android and I have tried to write a class MyAlertDialog for alert dialog to use it every where I need an alert dialog. I have written a method showAlertDialog in the class to do this. I found that the method have to be static. Could anybody tell me why it should be static? Here is my code:

public class MyAlertDialog extends AppCompatActivity {

public static void alertDialogShow(Context context, String message) {

    final Dialog dialog;
    TextView txtAlertMsg;
    TextView txtAlertOk;

    dialog = new Dialog(context);
    dialog.setContentView(R.layout.activity_my_alert_dialog);
    txtAlertOk = (TextView) dialog.findViewById(R.id.txtAalertOk);
    txtAlertMsg = (TextView) dialog.findViewById(R.id.txtAlertMsg);
    txtAlertMsg.setText(message);
    txtAlertOk.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            dialog.dismiss();
        }
    });
    dialog.show();
}

}

and I have called it like bellow:

MyAlertDialog.alertDialogShow(MainActivity.this,"Here is my message");

Upvotes: 1

Views: 71

Answers (2)

Renz Manacmol
Renz Manacmol

Reputation: 939

Why it should be static?

For memory management

How?

Declaring a field static means only one instance of it will exists

It does not belong to a specific instance, they can't refer to instance members, meaning they belong to the class itself

Upvotes: 2

theboringdeveloper
theboringdeveloper

Reputation: 1485

It is not necessary to be static

You can also do it the non-static way:

public class MyAlertDialog {

private Context context;
private String message;

public MyAlertDialog(Context context,String message){
    this.context = context;
    this.message = message;
}

public void alertDialogShow() {

    final Dialog dialog;
    TextView txtAlertMsg;
    TextView txtAlertOk;

    dialog = new Dialog(context);
    dialog.setContentView(R.layout.activity_my_alert_dialog);
    txtAlertOk = (TextView) dialog.findViewById(R.id.txtAalertOk);
    txtAlertMsg = (TextView) dialog.findViewById(R.id.txtAlertMsg);
    txtAlertMsg.setText(message);
    txtAlertOk.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            dialog.dismiss();
        }
    });
    dialog.show(); 
}

To call it:

MyAlertDialog myAlertDialog = new MyAlertDialog(MainActivity.this,"Here is my message");

myAlertDialog.alertDialogShow();

Upvotes: 0

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