如果您能帮我解决这个问题，我有一个包含 3 个选项的单选警报对话框。我最初禁用了 NEXT 按钮(没有选择任何选项)。当用户选择任何选项时，我想启用 NEXT 按钮。这是我试过的代码。
int involvementInIncident;
case DIALOG_ADD_A_PERSON_INVOLVEMENT_ONE:
builder.setTitle("Involvement in this Incident");
builder.setSingleChoiceItems(incidentInvolvement, -1,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
involvementInIncident = which;
//involvementInIncident = ((AlertDialog)dialog).getListView().getCheckedItemPosition();
Toast.makeText(getApplicationContext(),""+ involvementInIncident, Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("Next",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//Toast.makeText(getApplicationContext(),""+ involvementInIncident, Toast.LENGTH_SHORT).show();
showDialog(DIALOG_ADD_A_PERSON_PERSON_TYPE_TWO);
}
});
builder.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog alertInvolvement = builder.create();
alertInvolvement.show();
final Button buttonPositiveInvolvement = alertInvolvement.getButton(AlertDialog.BUTTON_POSITIVE);
buttonPositiveInvolvement.setEnabled(false);
if(involvementInIncident == 0 || involvementInIncident == 1 || involvementInIncident==2){
buttonPositiveInvolvement.setEnabled(true);
//Toast.makeText(getApplicationContext(),"person responsiblee", Toast.LENGTH_SHORT).show();
}
else
{
buttonPositiveInvolvement.setEnabled(false);
}
return dialog;
非常感谢您的帮助。 谢谢
最佳答案
终于搞定了。感谢 Piyush 和 Mystic Magic 的帮助。在这里发布代码，可能会对其他人有所帮助。 全局初始化的buttonPositiveInvolvement 按钮buttonPositiveInvolvement;
总结:在选择项目时启用/禁用单选 AlertDialog 中的肯定按钮。 (最初 NEXT 按钮被禁用，当一个项目被选中时它启用 NEXT 按钮)
//全局 按钮buttonPositiveInvolvement;
案例 DIALOG_ADD_A_PERSON_INVOLVEMENT_ONE:
builder.setTitle("Involvement in this Incident");
builder.setSingleChoiceItems(incidentInvolvement, -1,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//to enable the the NEXT button
buttonPositiveInvolvement.setEnabled(true);
}
});
builder.setPositiveButton("Next",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
showDialog(DIALOG_ADD_A_PERSON_PERSON_TYPE_TWO);
}
});
builder.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
//This sequence needs to be followed to get it working or else it might screw up
AlertDialog alertInvolvement = builder.create();
alertInvolvement.show();
buttonPositiveInvolvement = alertInvolvement.getButton(AlertDialog.BUTTON_POSITIVE);
buttonPositiveInvolvement.setEnabled(false);
return dialog;
关于android - 在单选警报对话框中启用/禁用肯定按钮，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21043230/