[英]How to manage the pressure on button on Back for a alert dialog
我想处理onBack
按钮,以便在按下按钮时会出现一个AlertDialog
,以便在onBack按钮的压力下将变量设置为-1。
这是我的警报对话框的代码:
protected Dialog onCreateDialog(int id)
{
switch(id)
{
case CUSTOM_DIALOG:
AlertDialog.Builder builder1;
builder1 = new AlertDialog.Builder(SecondaAttivita.this);
builder1.setView(layout);
builder1.setCancelable(true);
InputMethodManager imm = (InputMethodManager)getSystemService(
Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(testo.getWindowToken(), 0);
testo.setInputType(0);
alertDialog1 = builder1.create();
break;
default:
alertDialog1.dismiss();
alertDialog1 = null;
}
return alertDialog1;
}
您可以按照以下代码在活动类中使用以下代码来回退智能手机的按钮事件
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK) {
//Action against pressing back button here
return true;
}
return super.onKeyDown(keyCode, event);
}
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