Question

我有一个在适配器的onclick上调用的代码......

string player1 = PlayerList[0];
string player2 = PlayerList[1];
// and so on for the remaining players

当我运行此代码时，第一行代码出错。这一个...

final AlertDialog.Builder builder = new AlertDialog.Builder(
                context);
        builder.setMessage("Disconnect from Instagram?")
                .setCancelable(false)
                .setPositiveButton("Yes",
                        new DialogInterface.OnClickListener() {
                            //do something
                            public void onClick(DialogInterface dialog,
                                                int id) {
                                mApp.resetAccessToken();
                                // btnConnect.setVisibility(View.VISIBLE);

                                // tvSummary.setText("Not connected");
                            }
                        })
                .setNegativeButton("No",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,
                                                int id) {
                                dialog.cancel();
                            }
                        });
        final AlertDialog alert = builder.create();
        alert.show();

我该如何解决这个问题？

Answer 1

＆＃39;上下文＆＃39;必须是活动的类型

Answer 2

尝试将第一行更改为：

final AlertDialog alertDialog = new AlertDialog.Builder(ActivityName.this).create();

另外，删除底部的这一行：

final AlertDialog alert = builder.create();

如果这不起作用，请将代码发布到调用此代码的适配器中。

如果您在片段内，请使用此片段：

final AlertDialog alertDialog = new AlertDialog.Builder(getActivity()).create();

Answer 3

public boolean onLongClick(View v) {
    final AlertDialog.Builder alertDialog = new AlertDialog.Builder(v.getRootView().getContext())
            .setMessage("Do you really want to delete this size")
            .setCancelable(false)
            .setNegativeButton("No", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.cancel();
                }
            });
}

适配器类中的AlertDialog出错

3 个答案: