web-dev-qa-db-fra.com

android comment mettre une boîte de dialogue après avoir appuyé sur un bouton de retour

Je veux en cliquant sur le bouton Retour, il affichera une boîte de dialogue composée de TextViews et un bouton appelé quitter. Après avoir cliqué sur le bouton de sortie, il devrait sortir de mon application.

J'ai fait comme ça,

@Override       
public void onBackPressed() {       
    System.out.println("hiiii");
    final Dialog dialog = new Dialog(this);
    dialog.setContentView(R.layout.dialog);

    Button exitButton = (Button) dialog.findViewById(R.id.exit);
    System.out.println("inside dialog_started");
    exitButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View arg0) {
            MainActivity.this.finish();
            dialog.dismiss();
        }
    });
    return;
}

dans log cat hiiiii et "inside dialog_started" est imprimé, mais la boîte de dialogue ne vient pas. Comment puis-je obtenir cette boîte de dialogue en cliquant sur le bouton arrière?

androidback-button
15
Jyosna
 public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        exitByBackKey();

        //moveTaskToBack(false);

        return true;
    }
    return super.onKeyDown(keyCode, event);
}

protected void exitByBackKey() {

    AlertDialog alertbox = new AlertDialog.Builder(this)
    .setMessage("Do you want to exit application?")
    .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

        // do something when the button is clicked
        public void onClick(DialogInterface arg0, int arg1) {

            finish();
            //close();


        }
    })
    .setNegativeButton("No", new DialogInterface.OnClickListener() {

        // do something when the button is clicked
        public void onClick(DialogInterface arg0, int arg1) {
                       }
    })
      .show();

}
28
Sandy

C'est une solution plus simple:

@Override
public void onBackPressed() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);

    builder.setTitle("Save Or Not");
    builder.setMessage("Do you want to save this? ");
    builder.setPositiveButton("Save", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            saveResult();
            MyActivity.super.onBackPressed();
        }
    });
    builder.setNegativeButton("Discard", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            MyActivity.super.onBackPressed();
        }
    });
    builder.show();
}
6
Yuchen Zhong
 @Override
public void onBackPressed() {
// TODO Auto-generated method stub
      AlertDialog.Builder builder=new AlertDialog.Builder(mContext);
     // builder.setCancelable(false);
      builder.setTitle("Rate Us if u like this");
      builder.setMessage("Do you want to Exit?");
      builder.setPositiveButton("yes",new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            Toast.makeText(mContext, "Yes i wanna exit", Toast.LENGTH_LONG).show();

            finish();
        }
    });
      builder.setNegativeButton("No",new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            Toast.makeText(mContext, "i wanna stay on this page", Toast.LENGTH_LONG).show();
            dialog.cancel();

        }
    });
      builder.setNeutralButton("Rate",new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub

            final String appPackageName = getPackageName(); // getPackageName() from Context or Activity object
            try {
                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + getPackageName())));
            } catch (Android.content.ActivityNotFoundException anfe) {
                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://play.google.com/store/apps/details?id=" + getPackageName())));
            }

        }
    });
      AlertDialog alert=builder.create();
      alert.show();
     //super.onBackPressed(); 
      }
3
atul rathor

essaye ça...

     public boolean onKeyDown(int keyCode, KeyEvent event) {
     if (keyCode == KeyEvent.KEYCODE_BACK) {

         AlertDialog alertDialog = new AlertDialog.Builder(this).create();
            alertDialog.setTitle("Exit Alert");
            alertDialog.setIcon(R.drawable.appicon);

            alertDialog.setMessage("Do you really want to exit the Game?");
            alertDialog.setButton("Yes", new DialogInterface.OnClickListener() {
              public void onClick(DialogInterface dialog, int which) {
                  finish();
                return;
            } }); 
            alertDialog.setButton2("No", new DialogInterface.OnClickListener() {
              public void onClick(DialogInterface dialog, int which) {
                  dialog.cancel();
                return;
            }}); 
              alertDialog.show();

         return true;
     }
     return super.onKeyDown(keyCode, event);
 }
0
star angel
    @Override
        public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode != KeyEvent.KEYCODE_BACK)  return super.onKeyDown(keyCode, event);

            DialogInterface.OnClickListener dialogClickListener = new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int which) {
                switch (which){
                case DialogInterface.BUTTON_POSITIVE:
                    //Yes button clicked
                   finish();
                    break;

                case DialogInterface.BUTTON_NEGATIVE:
                    //No button clicked
                    break;
                }
            }
        };

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage("Are you sure?").setPositiveButton("Yes", dialogClickListener)
            .setNegativeButton("No", dialogClickListener).show();





        return super.onKeyDown(keyCode, event);
    }
0
Rasel

Voici un autre code pour afficher le message de sortie:

public void onBackPressed() { 
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
        Menu.this);

    // set title
    alertDialogBuilder.setTitle("Exit");

    // set dialog message
    alertDialogBuilder
        .setMessage("Do you really want to exit?")
        .setCancelable(false)
        .setPositiveButton("Yes",new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int id) {
                // if this button is clicked, close
                // current activity
                Menu.this.finish();
            }
          })
        .setNegativeButton("No",new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int id) {
                // if this button is clicked, just close
                // the dialog box and do nothing
                dialog.cancel();
            }
        });

        // create alert dialog
        AlertDialog alertDialog = alertDialogBuilder.create();

        // show it
        alertDialog.show();
    }
0
Vamsi Tallapudi
its working exactly....




public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            exitByBackKey();

            //moveTaskToBack(false);

            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    protected void exitByBackKey() {

        AlertDialog alertbox = new AlertDialog.Builder(this)
        .setMessage("Do you want to exit application?")
        .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

            // do something when the button is clicked
            public void onClick(DialogInterface arg0, int arg1) {

                finish();
                //close();


            }
        })
        .setNegativeButton("No", new DialogInterface.OnClickListener() {

            // do something when the button is clicked
            public void onClick(DialogInterface arg0, int arg1) {
                           }
        })
          .show();

    }
0
Arjun Chauhan