SergeyBurlaka

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical">

    <Button

SergeyBurlaka

 1. connect the headset to the phone via USB (tp-c)
 2. check if ap connected to hs
 3. check current app set (0 or 1)
 4. send Img Persist file to start firmware. 
    Wait when the IMG file is finalized. 
	Then update the next 3 files in the same way.

audioMgr.sendCommand(
                    UPDATE_IMAGE_COMMAND,
                    address,

SergeyBurlaka

am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

brr(new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
        int state = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE, -1);
        Log.d(TAG, "Audio SCO state: " + state);

        if (AudioManager.SCO_AUDIO_STATE_CONNECTED == state) { 

SergeyBurlaka

https://stackoverflow.com/a/53243938/6352712

@IntRange(from = 0, to = 3)
fun getConnectionType(context: Context): Int {
    var result = 0 // Returns connection type. 0: none; 1: mobile data; 2: wifi
    val cm = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager?
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        cm?.run {
            cm.getNetworkCapabilities(cm.activeNetwork)?.run {

SergeyBurlaka

https://docs.oracle.com/javase/7/docs/technotes/guides/jni/spec/design.html

jdouble Java_pkg_Cls_f__ILjava_lang_String_2 (
     JNIEnv *env,        /* interface pointer */
     jobject obj,        /* "this" pointer */
     jint i,             /* argument #1 */
     jstring s)          /* argument #2 */
{
     /* Obtain a C-copy of the Java string */
     const char *str = (*env)->GetStringUTFChars(env, s, 0);

SergeyBurlaka

https://github.com/googlemaps/android-samples/tree/master/ApiDemos

При использовании API в полностью интерактивном режиме пользователи 
класса MapView должны передавать все методы жизненного цикла объекта activity соответствующим методам в классе MapView: 
onCreate(), onStart(), onResume(), onPause(), onStop(), onDestroy(), onSaveInstanceState() и onLowMemory().

SergeyBurlaka

/**
 * Helper class for creating pools of objects. An example use looks like this:
 * <pre>
 * public class MyPooledClass {
 *
 *     private static final SynchronizedPool<MyPooledClass> sPool =
 *             new SynchronizedPool<MyPooledClass>(10);
 *
 *     public static MyPooledClass obtain() {
 *         MyPooledClass instance = sPool.acquire();

SergeyBurlaka

Activity, Fragment & Service as KoinComponents
Activity, Fragment & Service are extended with the KoinComponents extension. You gain access to:

by inject() - lazy evaluated instance from Koin container
get() - eager fetch instance from Koin container
release() - release module’s instances from its path
getProperty()/setProperty() - get/set property

SergeyBurlaka

Use large, simple controls
https://developer.android.com/guide/topics/ui/accessibility/apps#large-controls

Your app's UI is easier to use if it contains controls that are easier to see and tap. 
We recommend that each interactive UI element have a focusable area, 
or touch target size, of at least 48dp ✕ 48dp. Larger is even better.


Describe each UI element

SergeyBurlaka

class AudiTrackOutput(private val audioBuffer: AudioDataBuffer) : Thread() {

    private lateinit var handler: Handler
    
    fun play(from: Int) {
        handler.removeCallbacksAndMessages(null)
        val msg = handler.obtainMessage()
        val bundle = Bundle()
        bundle.putInt("FROM", from)
        msg.data = bundle