Created
January 23, 2019 15:30
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Custom Progressbar for Android Kotlin
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| import android.animation.ValueAnimator | |
| import android.content.Context | |
| import android.graphics.Color | |
| import android.graphics.PorterDuff | |
| import android.os.Build | |
| import android.util.AttributeSet | |
| import android.util.DisplayMetrics | |
| import android.view.View | |
| import android.view.ViewGroup | |
| import android.view.ViewGroup.LayoutParams.WRAP_CONTENT | |
| import android.view.animation.DecelerateInterpolator | |
| import android.widget.ProgressBar | |
| import androidx.annotation.ColorInt | |
| class ColoredProgressBar : ProgressBar { | |
| constructor(context: Context) : this(context, null) | |
| constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0) | |
| constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) { | |
| init() | |
| } | |
| private fun init() { | |
| progressDrawable.setColorFilter(Color.GRAY, PorterDuff.Mode.MULTIPLY) | |
| } | |
| override fun onAttachedToWindow() { | |
| super.onAttachedToWindow() | |
| val height = convertDpToPixel(4F, context).toInt() | |
| if (layoutParams != null) { | |
| layoutParams.height = height | |
| } else { | |
| layoutParams = ViewGroup.LayoutParams(WRAP_CONTENT, height) | |
| } | |
| if (hideAtMax && progress == 0) visibility = GONE | |
| requestLayout() | |
| } | |
| override fun setProgress(progress: Int) { | |
| super.setProgress(progress) | |
| visibility = if (hideAtMax && progress == max) GONE | |
| else if (hideAtMax && progress == 0) GONE | |
| else View.VISIBLE | |
| } | |
| override fun setProgress(progress: Int, animate: Boolean) { | |
| when { | |
| Build.VERSION.SDK_INT >= Build.VERSION_CODES.N -> super.setProgress(progress, animate) | |
| animate -> { | |
| val animator = ValueAnimator.ofInt(progress, progress) | |
| animator.addUpdateListener { | |
| this.progress = it.animatedValue as Int | |
| } | |
| animator.duration = 80 | |
| animator.interpolator = DecelerateInterpolator() | |
| animator.start() | |
| } | |
| else -> this.progress = progress | |
| } | |
| visibility = if (hideAtMax && progress == max) GONE | |
| else if (hideAtMax && progress == 0) GONE | |
| else View.VISIBLE | |
| } | |
| /** | |
| * Set margins to the layoutParams | |
| * <p> | |
| * @param left margin Left/Start | |
| * @param top margin Top | |
| * @param right margin Right/End | |
| * @param bottom margin Bottom | |
| */ | |
| fun setMargins(left: Int, top: Int, right: Int, bottom: Int) { | |
| if (layoutParams is ViewGroup.MarginLayoutParams) { | |
| val p = layoutParams as ViewGroup.MarginLayoutParams | |
| p.setMargins(left, top, right, bottom) | |
| requestLayout() | |
| } | |
| } | |
| /** | |
| * Set the color of the ProgressBar | |
| * <p> | |
| * @param color the color for the ProgressBar | |
| */ | |
| fun setColor(@ColorInt color: Int) { | |
| progressDrawable.setColorFilter(color, PorterDuff.Mode.MULTIPLY) | |
| } | |
| /** | |
| * If true it will hide the ProgressBar atomatically on 0 and max percentage | |
| * <p> | |
| */ | |
| var hideAtMax: Boolean = false | |
| private fun convertDpToPixel(dp: Float, context: Context): Float { | |
| return dp * (context.resources.displayMetrics.densityDpi.toFloat() / DisplayMetrics.DENSITY_DEFAULT) | |
| } | |
| } |
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