android alertdialog 抑制返回键

AlertDialog.Builder builder = new AlertDialog.Builder(context);if(icon != null){builder.setIcon(icon);}if(!TextUtils.isEmpty(title)){builder.setTitle(title);}if(!TextUtils.isEmpty(msg)){builder.setMessage(msg);}if(!TextUtils.isEmpty(leftButton)){builder.setPositiveButton(leftButton, leftOnClickListener);}if(!TextUtils.isEmpty(rightButton)){builder.setNegativeButton(rightButton, rightOnClickListener);}if(customerView != null){builder.setView(customerView);}if(onCancelListener != null){builder.setOnCancelListener(onCancelListener);}builder.setCancelable(canCancel); //canCancel 为true就能 抑制返回键return new MyAlertDialog(builder.create());

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