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StatusbarTools 扩展 - 状态栏自定义工具 · App Inventor 2 中文网
... 教育 中文教育版 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 ...
Call an activity method from a fragment
...
For Kotlin developers
(activity as YourActivityClassName).methodName()
For Java developers
((YourActivityClassName) getActivity()).methodName();
sha...
Change Checkbox value without triggering onCheckChanged
...ckedChangeListener(mListener);
}
super.toggle();
}
}
Kotlin version, if you prefer:
class CheckBox @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : AppCompatCheckBox(context, attrs, defStyleAttr) {
private var listener: Comp...
How to get the first element of the List or Set? [duplicate]
...wed by or encapsulated within the appropriate checks or try-catch blocks.
Kotlin:
In Kotlin both Arrays and most of the Collections (eg: List) have a first method call.
So your code would look something like this
for a List:
val stringsList: List<String?> = listOf("a", "b", null)
val first...
String variable interpolation Java [duplicate]
...
You can use Kotlin, the Super (cede of) Java for JVM, it has a nice way of interpolating strings like those of ES5, Ruby and Python.
class Client(val firstName: String, val lastName: String) {
val fullName = "$firstName $lastName"...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...自动管理内存。为什么必须管理内存
内存管理是计算机编程最为基本的领域之一。在很多脚本语言中，您不必担心内存是如何管理的，这并不能使得内存管理的重要性有一点点降低。对实际编程来说，理解您的内存管理器的能...
How to iterate through SparseArray?
...
For whoever is using Kotlin, honestly the by far easiest way to iterate over a SparseArray is: Use the Kotlin extension from Anko or Android KTX! (credit to Yazazzello for pointing out Android KTX)
Simply call forEach { i, item -> }
...
App Inventor 2 列表代码块 · App Inventor 2 中文网
...块的教程。
用法案例：《App Inventor 2 列表排序，函数式编程轻松实现高级排序算法》。
创建带比较器的有序列表
按照块主体指定的顺序对输入列表进行排序，创建一个新列表。
该块的主体是一个涉及 item1...
Determining the size of an Android view at runtime
...uper.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
If you write in Kotlin, you can use the next function, which behind the scenes works exactly like runJustBeforeBeingDrawn that I've written:
view.doOnPreDraw { actionToBeTriggered() }
Note that you need to add this to gradle (found via he...
passing argument to DialogFragment
... String nameFav = mArgs.getString("fav_name");
String name = "";
// Kotlin upload
val fm = supportFragmentManager
val dialogFragment = AddProgFargmentDialog() // my custom FargmentDialog
var args: Bundle? = null
args?.putString("title", model.title);
dialogFr...