Question

我想从我的活动开始一个对话框对话框返回一些对我有用的结果我怎样才能做到这一点？
我不知道在“？”（下面提到）中放什么，因为我的DialogClass扩展了Fragment而不是活动请更正以下代码：

我的活动中的代码段：

    buttonDone.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                     Intent intent = new Intent(this,?);
                     startActivityForResult(intent,1);
                }
            });

//On Activity result method
 @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode != Activity.RESULT_OK) return;
        if (requestCode == GlobalVariables.REQUEST_CODE_LIST_NAME) {
                 Log.d("Result received","");
}
}

我的DialogFragment：

public static class MyDialogClass extends DialogFragment
    {
        private String textListName;
        @Override
        public Dialog onCreateDialog(Bundle bundle)
        {
            AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
            builder.setTitle(TagClass.ENTER_NAME);
            final EditText input = new EditText(getActivity());
            input.setInputType(InputType.TYPE_CLASS_TEXT);
            builder.setView(input);
            builder.setPositiveButton(TagClass.OK, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    textListName = input.getText().toString();

                    if (!textListName.equals("")) {
                        Intent i = new Intent();
                        i.putExtra("ListName", textListName);

                        startActivityForResult(i,1);

                    } else
                        input.setError(TagClass.ERROR_BLANK_FIELD);
                }
            });
            builder.setNegativeButton(TagClass.CANCEL, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.cancel();
                }
            });
            return builder.create();
        }
    }

Answer 1

检查此代码段，它描述了如何在活动中显示片段。

// Create new fragment and transaction
Fragment newFragment = new ExampleFragment();
FragmentTransaction transaction = getFragmentManager().beginTransaction();

// Replace whatever is in the fragment_container view with this     fragment,
// and add the transaction to the back stack
transaction.replace(R.id.fragment_container, newFragment);
transaction.addToBackStack(null);

// Commit the transaction
transaction.commit();

Android：启动对话框，返回活动结果

1 个答案: