Record commonly used ktx
fun Context.px2dip(px: Float): Float = px / resources.displayMetrics.density + 0.5f
fun Context.px2dip(px: Int): Int = px2dip(px.toFloat()).toInt()
/**
* dp转px
*/
fun Context.dip2px(dp: Float): Float = applyDimension(
TypedValue.COMPLEX_UNIT_DIP,
dp,
resources.displayMetrics
)
fun Context.dp2px(dp: Float): Int = applyDimension(
TypedValue.COMPLEX_UNIT_DIP,
dp,
resources.displayMetrics
).toInt()
fun Context.dip2px(dp: Int): Int = applyDimension(
TypedValue.COMPLEX_UNIT_DIP,
dp.toFloat(),
resources.displayMetrics
).toInt()
fun TextView.setColor(colorId: Int) {
this.setTextColor(this.context.getColor(colorId))
}
fun View.setBg(drawableId: Int) {
this.background = this.context.getDrawable(drawableId)
}
/**
* 正常编码中一般只会用到 [dp]/[sp] ;
* 其中[dp]/[sp] 会根据系统分辨率将输入的dp/sp值转换为对应的px
*/
val Float.dp: Float // [xxhdpi](360 -> 1080)
get() = android.util.TypedValue.applyDimension(
android.util.TypedValue.COMPLEX_UNIT_DIP, this, Resources.getSystem().displayMetrics
)
val Int.dp: Int
get() = android.util.TypedValue.applyDimension(
android.util.TypedValue.COMPLEX_UNIT_DIP,
this.toFloat(),
Resources.getSystem().displayMetrics
).toInt()
val Float.sp: Float // [xxhdpi](360 -> 1080)
get() = android.util.TypedValue.applyDimension(
android.util.TypedValue.COMPLEX_UNIT_SP, this, Resources.getSystem().displayMetrics
)
val Int.sp: Int
get() = android.util.TypedValue.applyDimension(
android.util.TypedValue.COMPLEX_UNIT_SP,
this.toFloat(),
Resources.getSystem().displayMetrics
).toInt()
/**
* sp转px
*/
fun Context.sp2px(sp: Float): Float = applyDimension(
TypedValue.COMPLEX_UNIT_SP,
sp,
resources.displayMetrics
)
fun Context.sp2px(sp: Int): Int = applyDimension(
TypedValue.COMPLEX_UNIT_SP,
sp.toFloat(),
resources.displayMetrics
).toInt()
/*******View相关********/
fun View?.hide() {
if (this?.visibility != View.GONE) {
this?.visibility = View.GONE
}
}
fun View?.show() {
if (this?.visibility != View.VISIBLE) {
this?.visibility = View.VISIBLE
}
}
inline fun View.setThrottleListener(
thresholdMillis: Long = 500L,
crossinline block: (view: View) -> Unit
) {
setOnClickListener {
isClickable = false
postDelayed({
isClickable = true }, thresholdMillis)
block.invoke(it)
}
}
fun View?.inVisible() {
this?.visibility = View.INVISIBLE
}
fun View?.isGone(): Boolean {
return this?.visibility == View.GONE
}
fun hideSoftKeyboard(view: View) {
val imm = view.context
.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
imm.hideSoftInputFromWindow(view.windowToken, 0)
}
fun showSoftKeyboard(view: View) {
val imm = view.context
.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager
imm.showSoftInput(view, 0)
}