这是我的对话框代码,如果编辑文本中的文本大小大于5,我想禁用正按钮,如果大小< = 5则启用它
private void myDialog(String title) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
// Get the layout inflater
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View dialogView = inflater.inflate(R.layout.new_dialog,null);
// Inflate and set the layout for the dialog
// Pass null as the parent view because its going in the dialog layout
builder.setView(dialogView);
final EditText dialogEdittext = (EditText) dialogView.findViewById(R.id.dialog_editText);
final TextView dialogMessage = (TextView) dialogView.findViewById(R.id.dialog_limit);
dialogEdittext.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s,int start,int before,int count) {
}
@Override
public void beforeTextChanged(CharSequence s,int count,int after) {
}
@Override
public void afterTextChanged(Editable s) {
// if text length is greater than 5 disable positive button
// else enable
}
});
builder.setPositiveButton("Ok",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,int id) {
});
builder.setNegativeButton("Cancel",int id) {
}
});
final Dialog dialog = builder.create();
dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
dialog.show();
}
解决方法
尝试这样的事情：
@Override
public void afterTextChanged(Editable s) {
if (s.length() > 5) {
dialog.getButton(Dialog.BUTTON_POSITIVE).setEnabled(false);
} else {
dialog.getButton(Dialog.BUTTON_POSITIVE).setEnabled(true);
}
}
对话框是：
final AlertDialog dialog = builder.create();
