Android Dialog不等待OK按钮

Question

我有以下Dialog代码，但问题是选择在我按下OK按钮之前生效。按下“确定”按钮后，如何使选择生效？

public void cropSelect()
{
    final CharSequence[] cropType = {"Wheat","Corn","Soybean"};
    AlertDialog.Builder builder = new AlertDialog.Builder(MainContext.myContext);
    builder.setTitle("Choose Crop");
    builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {}
    });

    builder.setSingleChoiceItems(cropType, -1, new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {

            if("Wheat".equals(cropType[which])){
                cropSelect = "Wheat";
            }
            else if("Corn".equals(cropType[which])){
                cropSelect = "Corn";
            }
            else if("Soybean".equals(cropType[which])){
                cropSelect = "Soybean";
            }

        }
    });
    builder.show();

Answer 1

您希望保存他们在onClick中选择的内容，但不要将其设置为全局cropSelect变量，直到onClick的正按钮。现在，您只需在触摸项目时立即编写cropSelect变量。