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How to set layout_gravity programmatically?
...t = 1.0f;
params.gravity = Gravity.TOP;
button.setLayoutParams(params);
Kotlin
val params = LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT
).apply {
weight = 1.0f
gravity = Gravity.TOP
}
For gravity values and how to se...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
...一种标识方式是不用加代码的，在配置文件中通过声明型编程实现：
<system.runtime.serialization>
<dataContractSerializer>
<declaredTypes>
<add type="WcfServiceDemo.Address, MyAssembly, Version=2.0.0.0, Culture=neutral,PublicKeyToken=null, processorArchitect...
converting Java bitmap to byte array
...
Here is bitmap extension .convertToByteArray wrote in Kotlin.
/**
* Convert bitmap to byte array using ByteBuffer.
*/
fun Bitmap.convertToByteArray(): ByteArray {
//minimum number of bytes that can be used to store this bitmap's pixels
val size = this.byteCount
...
Programmatically update widget from activity/service/receiver
...
Phaethon's accepted solution in Kotlin:
val intent = Intent(this, MyAppWidgetProvider::class.java)
intent.action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
val ids = AppWidgetManager.getInstance(application).getAppWidgetIds(ComponentName(getApp...
Get root view from current activity
...
In Kotlin we can do it a little shorter:
val rootView = window.decorView.rootView
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What's the best way to limit text length of EditText in Android
...ew InputFilter.LengthFilter(maxLength);
editText.setFilters(newFilters);
Kotlin however made it easier for everyone, you also need to add the filter to the already existing ones but you can achieve that with a simple:
editText.filters += InputFilter.LengthFilter(maxLength)
...
How to add -Xlint:unchecked to my Android Gradle based project?
...
For deprecation, you can now use this in gradle kotlin script, which is better than modifying compilerArgs because it's type-safe:
tasks.withType<JavaCompile> {
options.isDeprecation = true
}
...
开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...g/OTP 编写，这是一种用于构建大规模可扩展软实时系统的编程语言。与 Mosquitto 不同，EMQX 在设计之初即采用了分布式集群架构，可以轻松实现弹性水平扩展，从而稳定承载大规模的 MQTT 客户端接入。最新版本 EMQX 5.0 可在 23 个节...
Get current date in milliseconds
...Now().UnixNano() / 1000000
Hive* unix_timestamp() * 1000
Java / Groovy / Kotlin System.currentTimeMillis()
Javascript new Date().getTime()
MySQL* UNIX_TIMESTAMP() * 1000
Objective-C (long long)([[NSDate date] timeIntervalSi
Wrong requestCode in onActivityResult
...
Easier:
Java:
int unmaskedRequestCode = requestCode & 0x0000ffff
Kotlin:
val unmaskedRequestCode = requestCode and 0x0000ffff
Check for the lower 16 bits, just unmask it doing a logical AND with the upper 16 bits zeroed
protected void onActivityResult(int requestCode, int resultCode, Int...