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Merge pull request #385 from ytai/KotlinConversion
Kotlin conversion HelloIOIO
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applications/HelloIOIO/src/main/java/ioio/examples/hello/MainActivity.java
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applications/HelloIOIO/src/main/java/ioio/examples/hello/MainActivity.kt
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|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| package ioio.examples.hello | ||
|
|
||
| import android.content.Context | ||
| import android.os.Bundle | ||
| import android.widget.Toast | ||
| import android.widget.ToggleButton | ||
| import ioio.lib.api.DigitalOutput | ||
| import ioio.lib.api.IOIO | ||
| import ioio.lib.api.IOIO.VersionType | ||
| import ioio.lib.api.exception.ConnectionLostException | ||
| import ioio.lib.util.BaseIOIOLooper | ||
| import ioio.lib.util.IOIOLooper | ||
| import ioio.lib.util.android.IOIOActivity | ||
|
|
||
| /** | ||
| * This is the main activity of the HelloIOIO example application. | ||
| * | ||
| * | ||
| * It displays a toggle button on the screen, which enables control of the | ||
| * on-board LED. This example shows a very simple usage of the IOIO, by using | ||
| * the [IOIOActivity] class. For a more advanced use case, see the | ||
| * HelloIOIOPower example. | ||
| */ | ||
| class MainActivity : IOIOActivity() { | ||
| private var toggleButton: ToggleButton? = null | ||
| private var numConnected = 0 | ||
|
|
||
| /** | ||
| * Called when the activity is first created. Here we normally initialize | ||
| * our GUI. | ||
| */ | ||
| public override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
| setContentView(R.layout.main) | ||
| toggleButton = findViewById(R.id.button) | ||
| } | ||
|
|
||
| /** | ||
| * A method to create our IOIO thread. | ||
| * | ||
| * @see ioio.lib.util.AbstractIOIOActivity.createIOIOThread | ||
| */ | ||
| override fun createIOIOLooper(): IOIOLooper { | ||
| return Looper() | ||
| } | ||
|
|
||
| private fun showVersions(ioio: IOIO, title: String) { | ||
| toast( | ||
| String.format( | ||
| """ | ||
| %s | ||
| IOIOLib: %s | ||
| Application firmware: %s | ||
| Bootloader firmware: %s | ||
| Hardware: %s | ||
| """.trimIndent(), | ||
| title, | ||
| ioio.getImplVersion(VersionType.IOIOLIB_VER), | ||
| ioio.getImplVersion(VersionType.APP_FIRMWARE_VER), | ||
| ioio.getImplVersion(VersionType.BOOTLOADER_VER), | ||
| ioio.getImplVersion(VersionType.HARDWARE_VER) | ||
| ) | ||
| ) | ||
| } | ||
|
|
||
| private fun toast(message: String) { | ||
| val context: Context = this | ||
| runOnUiThread { Toast.makeText(context, message, Toast.LENGTH_LONG).show() } | ||
| } | ||
|
|
||
| private fun enableUi(enable: Boolean) { | ||
| // This is slightly trickier than expected to support a multi-IOIO use-case. | ||
| runOnUiThread { | ||
| if (enable) { | ||
| if (numConnected++ == 0) { | ||
| toggleButton!!.isEnabled = true | ||
| } | ||
| } else { | ||
| if (--numConnected == 0) { | ||
| toggleButton!!.isEnabled = false | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * This is the thread on which all the IOIO activity happens. It will be run | ||
| * every time the application is resumed and aborted when it is paused. The | ||
| * method setup() will be called right after a connection with the IOIO has | ||
| * been established (which might happen several times!). Then, loop() will | ||
| * be called repetitively until the IOIO gets disconnected. | ||
| */ | ||
| internal inner class Looper : BaseIOIOLooper() { | ||
| /** | ||
| * The on-board LED. | ||
| */ | ||
| private var digitalOutput: DigitalOutput? = null | ||
|
|
||
| /** | ||
| * Called every time a connection with IOIO has been established. | ||
| * Typically used to open pins. | ||
| * | ||
| * @throws ConnectionLostException When IOIO connection is lost. | ||
| * @see ioio.lib.util.IOIOLooper.setup | ||
| */ | ||
| @Throws(ConnectionLostException::class) | ||
| override fun setup() { | ||
| showVersions(ioio_, "IOIO connected!") | ||
| digitalOutput = ioio_.openDigitalOutput(0, true) | ||
| enableUi(true) | ||
| } | ||
|
|
||
| /** | ||
| * Called repetitively while the IOIO is connected. | ||
| * | ||
| * @throws ConnectionLostException When IOIO connection is lost. | ||
| * @throws InterruptedException When the IOIO thread has been interrupted. | ||
| * @see ioio.lib.util.IOIOLooper.loop | ||
| */ | ||
| @Throws(ConnectionLostException::class, InterruptedException::class) | ||
| override fun loop() { | ||
| digitalOutput!!.write(!toggleButton!!.isChecked) | ||
| Thread.sleep(100) | ||
| } | ||
|
|
||
| /** | ||
| * Called when the IOIO is disconnected. | ||
| * | ||
| * @see ioio.lib.util.IOIOLooper.disconnected | ||
| */ | ||
| override fun disconnected() { | ||
| enableUi(false) | ||
| toast("IOIO disconnected") | ||
| } | ||
|
|
||
| /** | ||
| * Called when the IOIO is connected, but has an incompatible firmware version. | ||
| * | ||
| * @see ioio.lib.util.IOIOLooper.incompatible | ||
| */ | ||
| @Deprecated("Deprecated in Java") | ||
| override fun incompatible() { | ||
| showVersions(ioio_, "Incompatible firmware version!") | ||
| } | ||
| } | ||
| } |
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