Question

我是android studio的新手，我有一个小问题。我想要一个对话框，其中有一些选择可以从ArrayList中选择（参与者在我的代码中分享）但是当我正在试图打开这个对话框时，应用程序就停止了，我究竟做错了什么？

final AlertDialog.Builder builder = new AlertDialog.Builder(Paiements.this);
builder.setTitle("Qui a payé ?");
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(Paiements.this, android.R.layout.simple_list_item_1, participantsShare );

builder.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int item) {
        participant.setText(participantsShare.get(item));
        dialog.cancel();
    }
});

AlertDialog dialog = builder.create();
dialog.show();

（参与者分享是ArrayList<String>，参与者是EditText）

Answer 1

使用此代码在对话框中显示列表。

AlertDialog.Builder builderSingle = new AlertDialog.Builder(DialogActivity.this);
builderSingle.setIcon(R.drawable.ic_launcher);
builderSingle.setTitle("Select One Name:-");

final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(DialogActivity.this, android.R.layout.select_dialog_singlechoice);
arrayAdapter.add("Hardik");
arrayAdapter.add("Archit");
arrayAdapter.add("Jignesh");
arrayAdapter.add("Umang");
arrayAdapter.add("Gatti");

builderSingle.setNegativeButton("cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });

builderSingle.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String strName = arrayAdapter.getItem(which);
                AlertDialog.Builder builderInner = new AlertDialog.Builder(DialogActivity.this);
                builderInner.setMessage(strName);
                builderInner.setTitle("Your Selected Item is");
                builderInner.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog,int which) {
                                dialog.dismiss();
                            }
                        });
                builderInner.show();
            }
        });
builderSingle.show();

带有列表的我的对话框不起作用

1 个答案: