如何使用 nativescript javascript 扩展？

Question

我按照这个guide 继承一个类，但我因dalvik.system.NativeStart.main(native method) 错误而崩溃

var MyDatePicker = android.widget.DatePicker.extend({
    init: function() {
        var isConstructor = arguments[arguments.length - 1];
        if (isConstructor) {
            // we are called from Java constructor
            console.log('con')
        } else  {
            // we are called from Java init method
            console.log('init');
        }
    }
});

var foo = new MyDatePicker();

Answer 1

根据 Android 文档 (http://developer.android.com/reference/android/widget/DatePicker.html) DatePicker 构造函数至少需要一个参数（上下文）。例如，尝试传递它

var foo = new MyDatePicker(context);