Question

所以我试图从我的工具栏的导航按钮打开一个Dialog，但它没有打开，而只是返回true。

以下是我点击代码的导航：

toolbar_main.setNavigationOnClickListener(new View.OnClickListener(){

    @Override
    public void onClick(View view) {

        Main.this.runOnUiThread(new Runnable() {
            public void run() {

                DialogNewAmount dialog = new DialogNewAmount();
                dialog.show(getFragmentManager(), "");

            }});

    }
});

我认为在充气对话框时可能会发生错误

DialogNewAmount类：

public class DialogNewAmount extends DialogFragment {

private MyDatabase database;

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    database = MyDatabase.getDatabase(getActivity());
    database.isOpen();

    //Creating dialog windows using AlertDialog with the name "builder"
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    //Giving reference to the layout for this dialog then displaying it
    final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_new_amount, null);
    builder.setView(dialogView);

    //Getting reference to widgets being displayed in layout
    final EditText editA = dialogView.findViewById(R.id.editAmount);
    final EditText editD = dialogView.findViewById(R.id.editDescription);

    //Labelling the dialog window
    builder.setTitle("ADD AMOUNT");

    //Handle the cancel button
    builder.setNegativeButton("CANCEL",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,
                                    int which) {
                    dismiss();
                }
            });

    //Handle the Add button

    builder.setPositiveButton("ADD",
            new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog,
                            int which) {

            String Amount = editA.getText().toString();
            String Description = editD.getText().toString();

            if (Amount.matches("") || (Description.matches(""))) {

                Toast.makeText(getActivity(), "You can't leave any field blank", Toast.LENGTH_LONG).show();

            } else {

                try {

                    // Preparing variables
                    int parsedAmount = Integer.parseInt(editA.getText().toString());
                    String myString = editD.getText().toString();

                    //Adding transaction in database
                    database.transactionDAO().addTransaction
                            (new Database.Transaction(parsedAmount, myString));

                    Log.i("Database", "OK");

                    // Create a new transaction
                    Transaction newTransaction = new Transaction(parsedAmount, myString);

                    //Pass new transaction back to main activity
                    Main.createNewTransaction(newTransaction);

                   getActivity().runOnUiThread(new Runnable() {
                        public void run()
                        {
                            updateTotalAmount();
                        }});

                    //Quit the dialog
                    dismiss();

                    Log.i("DialogNewAmount", "OK");
                } catch (Error e) {

                    Log.e("DialogNewAmount", "Fail", e);
                }
            }
        }
    }); return builder.create();
}

我也应该发布我的logCat吗？

任何形式的指导都将受到高度赞赏！

Answer 1

试试这个

修改
在您的活动中初始化对话框。

DialogFragment dialog; toolbar_main.setNavigationOnClickListener(new View.OnClickListener(){ @Override public void onClick(View view) { Main.this.runOnUiThread(new Runnable() { public void run() { dialog = (DialogFragment) dialog.instantiate(getApplicationContext(), DialogNewAmount.class.getName()); dialog.show(getSupportFragmentManager(), ""); }}); } });

Answer 2

最后解决了！

问题出现了，因为我在将工具栏设置为支持操作栏之前调用了onClickListener方法，这就是为什么它从未在logCat中给出任何致命错误的原因因为我有所有的方法搞砸了。

仍然感谢帮助！

单击时导航按钮未打开对话框

2 个答案: