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71 changes: 71 additions & 0 deletions
71
app/src/main/kotlin/com/ediposouza/teslesgendstracker/ui/util/KeyboardUtil.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| package com.ediposouza.teslesgendstracker.ui.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 | ||
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| /** | ||
| * Created by EdipoSouza on 12/31/16. | ||
| */ | ||
| /** | ||
| * 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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| //a small helper to allow showing the editText focus | ||
| private 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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| private val decorView: View | ||
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| init { | ||
| this.decorView = act.window.decorView | ||
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| //only required on newer android versions. it was working on API level 19 (Build.VERSION_CODES.KITKAT) | ||
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { | ||
| decorView.viewTreeObserver.addOnGlobalLayoutListener(onGlobalLayoutListener) | ||
| } | ||
| } | ||
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| fun enable() { | ||
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { | ||
| decorView.viewTreeObserver.addOnGlobalLayoutListener(onGlobalLayoutListener) | ||
| } | ||
| } | ||
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| fun disable() { | ||
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { | ||
| decorView.viewTreeObserver.removeOnGlobalLayoutListener(onGlobalLayoutListener) | ||
| } | ||
| } | ||
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| } |
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