Android 생성 기본 Dialog(대화 상자)

②MainActivity.java

public void myClick(View view) {

        switch (view.getId()){
            case R.id.normal_dialog_btn:
                //1、        Builder
                //AlertDialog      protected，        new ， new     
                AlertDialog.Builder builder=new AlertDialog.Builder(this);
                
                //2、       
                builder.setTitle("  ");//    
                builder.setMessage("        ？");//       
                //    ：     
                builder.setPositiveButton("  ", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                });

                builder.setNegativeButton("  ",null);
                
                //3、  
                builder.show();
                //         
//                AlertDialog dialog=builder.create();
//                dialog.show();

                break;
            case R.id.diy_dialog_btn:
                break;
        }

 public void showNormalDialog(){
        AlertDialog dialog=new AlertDialog.Builder(this).create();
        dialog.setTitle("  ");//    
        dialog.setMessage("        ？");
        dialog.setButton(DialogInterface.BUTTON_POSITIVE, "  ", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                finish();
            }
        });
        dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "  ", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //
            }
        });
        dialog.show();
    }

public void myClick(View view) {

        switch (view.getId()){
            case R.id.normal_dialog_btn:
                showNormalDialog();
                break;
            case R.id.diy_dialog_btn:
                break;
        }
    }