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GestureDetector 手势检测拓展：识别向上/向下/向右/向左滑动和双击等手势...
.../community.kodular.io/t/f ... d-doubleclick/94542
已整理：https://www.fun123.cn/reference/ ... /gesturedetect.htmlhttps://www.fun123.cn/reference/other/extensionsMultitouch.html
https://www.fun123.cn/reference/other/extensionsRotation.html
待一起分析、整理。
App Inventor 2 MultiImagePicker 拓展：实现图片/视频多选功能 - App Inve...
...最大选择数量
- 可过滤文件类型
官方文档：https://www.fun123.cn/reference/extensions/MultiImagePicker.html
二、属性
MimeFilter（图片过滤类型）
- 默认值：image/*
- 单选和多选都会使用这个过滤条件
- 如果想选择视频，可以改为 vid...
IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager
...he activity to host fragments. It's value should be properly initialized.
fun dispatchFragment(frag: Fragment) {
hostActivity?.let {
if(it.lifecyclecurrentState.isAtLeast(Lifecycle.State.RESUMED)){
showFragment(frag)
}
}
}
private fun showFragment(frag: Fragment) {...
How to unit test a Node.js module that requires other modules and how to mock the global require fun
...h/to/underTest');
var sinon = require('sinon');
describe("underTest", function() {
it("does something", function() {
sinon.stub(innerLib, 'toCrazyCrap').callsFake(function() {
// whatever you would like innerLib.toCrazyCrap to do under test
});
underTest();
sinon.asser...
7个App Inventor 2文件操作实用技巧，读写文件从未如此顺手 - App应用开发 ...
...目录剩余空间——FileTools 拓展就是你的瑞士军刀。
从 fun123.cn 下载 com.sunny.FileTools.aix 拓展文件，导入后即可使用。几个特别实用的方法：
• GetFreeSpace：查询目录可用空间（字节），存大文件前先判一判，防写入失败
• Asyn...
Getting one value from a tuple
...o a list
first_val = my_tuple[0]
second_val = my_tuple[1]
# if you have a function called my_tuple_fun that returns a tuple,
# you might want to do this
my_tuple_fun()[0]
my_tuple_fun()[1]
# or this
v1, v2 = my_tuple_fun()
Hope this clears things up further for those that need it.
...
How to create EditText with cross(x) button at end of it?
...
This is a kotlin solution. Put this helper method in some kotlin file-
fun EditText.setupClearButtonWithAction() {
addTextChangedListener(object : TextWatcher {
override fun afterTextChanged(editable: Editable?) {
val clearIcon = if (editable?.isNotEmpty() == true) R.dra...
How to Create a circular progressbar in Android which rotates on it?
...e var centerY: Float = 0f
private var radius: Float = 0f
override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
centerX = w.toFloat() / 2
centerY = h.toFloat() / 2
radius = w.toFloat() / 2 - progressWidth
oval.set(centerX - radius,
...
How do I grab an INI value within a shell script?
....} ) # set section prefix
ini=( ${ini[*]/%\\]/ \(} ) # convert text2function (1)
ini=( ${ini[*]/=/=\( } ) # convert item to array
ini=( ${ini[*]/%/ \)} ) # close array parenthesis
ini=( ${ini[*]/%\\ \)/ \\} ) # the multiline trick
ini=( ${ini[*]/%\( \)/\(\) \{} ) # conv...
How to programmatically set maxLength in Android TextView?
...
For those of you using Kotlin
fun EditText.limitLength(maxLength: Int) {
filters = arrayOf(InputFilter.LengthFilter(maxLength))
}
Then you can just use a simple editText.limitLength(10)
...