huutho-dev

fun getAllFileWithExtension(dir: File, fileExtension: String): MutableList<String> {

    val result = mutableListOf<String>()

    val listFiles: Array<File>? = dir.listFiles()

    listFiles?.takeIf { listFiles.isNotEmpty() }?.let {
        
        listFiles.forEach {
            when (it.isDirectory) {

huutho-dev

https://github.com/Kotlin/anko

huutho-dev

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto">

    <item
        android:id="@+id/action_settings"
        android:icon="@drawable/ic_more_vert_black_24dp"
        android:title="More"
        app:showAsAction="always">
        <menu>

huutho-dev

/**
     * https://stackoverflow.com/questions/15128204/how-to-get-the-size-of-bitmap-after-displaying-it-in-imageview
     */
public int[] getSizeDrawable() {
        Rect bounds = getDrawable().getBounds();
        int width = bounds.width();
        int height = bounds.height();
        int bitmapWidth = getDrawable().getIntrinsicWidth(); //this is the bitmap's width
        int bitmapHeight = getDrawable().getIntrinsicHeight(); //this is the bitmap's height
        return new int[]{bitmapWidth, bitmapHeight};

huutho-dev

https://github.com/Polarrco/PolarrPhotoEditorAndroidSDK

https://github.com/imgly/pesdk-android-demo

huutho-dev

if (isExternalStorageWritable()) {
            Log.e("ThoNH","isExternalStorageWritable")
            val appDirectory = File("${Environment.getExternalStorageDirectory()}/MyPersonalAppFolder")
            val logDirectory = File("$appDirectory/log")
            val logFile = File(logDirectory, "logcat" + System.currentTimeMillis() + ".txt")

            // create app folder
            if (!appDirectory.exists()) {
                appDirectory.mkdir()
            }

huutho-dev

/**
  Reference: 
  1.https://guides.codepath.com/android/Understanding-App-Permissions
  2.https://guides.codepath.com/android/Managing-Runtime-Permissions-with-PermissionsDispatcher
  3.https://gist.github.com/dlew/2a21b06ee8715e0f7338
*/

huutho-dev

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#001921</color>
    <color name="colorPrimaryDark">#00151b</color>
    <color name="colorAccent">#e54c4c</color>

    <!--// LightBackground-->
    <color name="colorTextDarkPrimary">#de000000</color>
    <color name="colorTextDarkSecondary">#8a000000</color>
    <color name="colorTextDarkHint">#61000000</color>

huutho-dev

<!-- values-mdpi -->
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <dimen name="divider_height">1px</dimen>
    <dimen name="_1dp">1px</dimen>
    <dimen name="_4dp">4px</dimen>
    <dimen name="_8dp">8px</dimen>
    <dimen name="_16dp">16px</dimen>
    <dimen name="_24dp">24px</dimen>
    <dimen name="_32dp">32px</dimen>

huutho-dev

     public override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        setSupportActionBar(mToolbar)
        supportActionBar?.setDisplayHomeAsUpEnabled(true)
        supportActionBar?.setDisplayShowHomeEnabled(true)
        supportActionBar?.setHomeButtonEnabled(true)