我創建使用AlertDialog.Buiilder多選擇DialogFragment檢查的項目數
mDialog = new AlertDialog.Builder(getActivity()).setIconAttribute(mIcon).setTitle(mTitle)
.setPositiveButton(mPositiveButton, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
mCallbacks.onPositiveClick(((AlertDialog) getDialog()).getListView().getCheckedItemPositions(), mChoices);
}
}).setNegativeButton(mNegativeButton, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
mCallbacks.onNegativeClick(((AlertDialog) getDialog()).getListView().getCheckedItemPositions());
}
}).setMultiChoiceItems(mChoices, mCheckedItems, new OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if (mIsCheckedRequired) {
AlertDialog alertDialog = ((AlertDialog) dialog);
if (alertDialog.getListView().getCheckedItemCount() == 0)
alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(false);
else
alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(true);
}
}
}).create();
我也想使禁用正面按鈕時,沒有檢查的項目多選擇對話框:
@Override
public void onStart() {
super.onStart();
if (mIsCheckedRequired && mDialog.getListView().getCheckedItemCount() == 0) {
mDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(false);
}
}
mDialog.getListView() .getCheckedItemCount()總是在點擊之前重新生成0,有沒有一種方法可以在點擊之前知道已檢查的項目計數,除非有字段mCheckedItems數組並通過它運行?
嘗試定製與自己的佈局文件對話框 – MathaN