Question

我有一个对话框片段，我通过setmultiplechoiceitems获取用户的选择（我保留所选项目+通过接口将它们传递给主机活动）。

我现在正在尝试使用alertdialog的自定义布局，我想知道使用我的复选框布局而不是默认布局的最佳方法是什么（因为我已经花了太多时间来获取第一个代码工作，我真的不想重新开始每个复选框，sharefprefs和东西的监听器...）我想知道我是否可以使用我的实际代码我的自定义复选框。

正如您在屏幕截图中看到的那样，我已经使用.setView(inflater.inflate(R.layout.custom_settings,null))添加了我的自定义布局（底部清单），但所选项目并不持久。

enter image description here

这是我的代码：

public class TimelineSettings extends DialogFragment {
ArrayList<Integer> selected_categories = new ArrayList<Integer>();
boolean[] itemsChecked = {false, false, false, false, false, false};


public interface dialoglistener {
    public void onOkay(ArrayList<Integer> selected);
    public void onCancel();
}
dialoglistener mlistener;

@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);
    // ensure that the host activity implements the callback interface
    try {
        // Instantiate the dialogListener so we can send events to the host
        mlistener = (dialoglistener) activity;
    } catch (ClassCastException e) {
        // if activity doesn't implement the interface, throw an exception
        throw new ClassCastException(activity.toString()
                + " must implement dialogListener");
    }
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    for(int i=0;i<itemsChecked.length;i++){
        if(selected_categories.contains((String)String.valueOf(i)))
            itemsChecked[i]=true;
    }
    LayoutInflater inflater = getActivity().getLayoutInflater();
    // Set the dialog title
    builder.setTitle("Choisissez vos paramètres")
            .setMultiChoiceItems(R.array.categories, itemsChecked,
                    new DialogInterface.OnMultiChoiceClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int indexselected,
                                            boolean isChecked) {
                            if (isChecked) {
                                // If the user checked the item, add it to the selected items
                                if(!selected_categories.contains(indexselected)){
                                    selected_categories.add(indexselected);
                                    itemsChecked[indexselected]=true;
                                }
                            } else if (selected_categories.contains(indexselected)) {
                                // Else, if the item is already in the array, remove it
                                selected_categories.remove(indexselected);
                                itemsChecked[indexselected]=false;
                            }
                        }
                    })
            .setView(inflater.inflate(R.layout.custom_settings,null))
                    // Set the action buttons
            .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {
                    mlistener.onOkay(selected_categories);
                }


            })
            .setNegativeButton("Annuler", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {
                    mlistener.onCancel();
                }
            });
    //this part is to customize the look of the alertdialog :
    Dialog d = builder.show();
    int dividerId = d.getContext().getResources().getIdentifier("android:id/titleDivider", null, null);
    int textViewId = d.getContext().getResources().getIdentifier("android:id/alertTitle", null, null);
    Typeface roboto = Typeface.createFromAsset(getActivity().getAssets(),"fonts/Roboto-Thin.ttf");
    View divider = d.findViewById(dividerId);
    divider.setBackgroundColor(getResources().getColor(R.color.main_green));
    TextView tv = (TextView) d.findViewById(textViewId);
    tv.setTextColor(getResources().getColor(R.color.main_green));
    tv.setTypeface(roboto);
    return d; //was : return builder.create();
}
}

Answer 1

您的selected_categories是一个Integer对象的ArrayList，但是当您使用selected_categories.contains((String)String.valueOf(i))检查要检查字符串的内容时您不会在Integer ArrayList中找到任何字符串，因此该语句将始终返回false。

尝试：

for(int i=0;i<itemsChecked.length;i++){
        if(selected_categories.contains(Integer.valueOf(i)) {
            itemsChecked[i]=true;
    }
}

更改alertdialog多项目的布局

1 个答案: