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82 changes: 82 additions & 0 deletions
82
app/src/main/java/soko/ekibun/bangumi/util/KeyboardUtil.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package soko.ekibun.bangumi.util | ||
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| import android.app.Activity | ||
| import android.graphics.Rect | ||
| import android.os.Build | ||
| import android.view.View | ||
| import android.view.ViewTreeObserver | ||
| import android.view.inputmethod.InputMethodManager | ||
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| /** | ||
| * Created by mikepenz on 14.03.15. | ||
| * This class implements a hack to change the layout padding on bottom if the keyboard is shown | ||
| * to allow long lists with editTextViews | ||
| * Basic idea for this solution found here: http://stackoverflow.com/a/9108219/325479 | ||
| */ | ||
| class KeyboardUtil(act: Activity, private val contentView: View) { | ||
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| private val decorView: View = act.window.decorView | ||
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| //a small helper to allow showing the editText focus | ||
| var onGlobalLayoutListener: ViewTreeObserver.OnGlobalLayoutListener = ViewTreeObserver.OnGlobalLayoutListener { | ||
| val r = Rect() | ||
| //r will be populated with the coordinates of your view that area still visible. | ||
| decorView.getWindowVisibleDisplayFrame(r) | ||
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| //get screen height and calculate the difference with the useable area from the r | ||
| val height = decorView.context.resources.displayMetrics.heightPixels | ||
| val diff = height - r.bottom | ||
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| //if it could be a keyboard add the padding to the view | ||
| if (diff != 0) { | ||
| // if the use-able screen height differs from the total screen height we assume that it shows a keyboard now | ||
| //check if the padding is 0 (if yes set the padding for the keyboard) | ||
| if (contentView.paddingBottom != diff) { | ||
| //set the padding of the contentView for the keyboard | ||
| contentView.setPadding(0, 0, 0, diff) | ||
| } | ||
| } else { | ||
| //check if the padding is != 0 (if yes reset the padding) | ||
| if (contentView.paddingBottom != 0) { | ||
| //reset the padding of the contentView | ||
| contentView.setPadding(0, 0, 0, 0) | ||
| } | ||
| } | ||
| } | ||
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| init { | ||
| //only required on newer android versions. it was working on API level 19 | ||
| if (Build.VERSION.SDK_INT >= 19) { | ||
| decorView.viewTreeObserver.addOnGlobalLayoutListener(onGlobalLayoutListener) | ||
| } | ||
| } | ||
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| fun enable() { | ||
| if (Build.VERSION.SDK_INT >= 19) { | ||
| decorView.viewTreeObserver.addOnGlobalLayoutListener(onGlobalLayoutListener) | ||
| } | ||
| } | ||
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| fun disable() { | ||
| if (Build.VERSION.SDK_INT >= 19) { | ||
| decorView.viewTreeObserver.removeOnGlobalLayoutListener(onGlobalLayoutListener) | ||
| } | ||
| } | ||
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| companion object { | ||
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| /** | ||
| * Helper to hide the keyboard | ||
| * | ||
| * @param act | ||
| */ | ||
| fun hideKeyboard(act: Activity?) { | ||
| if (act != null && act.currentFocus != null) { | ||
| val inputMethodManager = act.getSystemService(Activity.INPUT_METHOD_SERVICE) as InputMethodManager | ||
| inputMethodManager.hideSoftInputFromWindow(act.currentFocus!!.windowToken, 0) | ||
| } | ||
| } | ||
| } | ||
| } |