今天就跟大家聊聊有关Android项目中怎么显示与隐藏软键盘,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。代码如下:import android.app.Activity;impor
今天就跟大家聊聊有关Android项目中怎么显示与隐藏软键盘,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
代码如下:
import android.app.Activity;import android.content.Context;import android.graphics.Rect;import android.os.Build;import android.util.Log;import android.util.TypedValue;import android.view.View;import android.view.ViewGroup;import android.view.ViewTreeObserver;public class KeyBoardShowListener { private Context ctx; public KeyBoardShowListener(Context ctx) { this.ctx = ctx; } OnKeyboardVisibilityListener keyboardListener; public OnKeyboardVisibilityListener geTKEyboardListener() { return keyboardListener; } public interface OnKeyboardVisibilityListener { void onVisibilityChanged(boolean visible); } public void setKeyboardListener(final OnKeyboardVisibilityListener listener, Activity activity) { final View activityRootView = ((ViewGroup) activity.findViewById(android.R.id.content)).getChildAt(0); activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { private boolean wasOpened; private final int DefaultKeyboardDP = 100; // From @nathanielwolf answer... Lollipop includes button bar in the root. Add height of button bar (48dp) to maxDiff private final int EstimatedKeyboardDP = DefaultKeyboardDP + (Build.VERSioN.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ? 48 : 0); private final Rect r = new Rect(); @Override public void onGlobalLayout() { // Convert the dp to pixels. int estimatedKeyboardHeight = (int) TypedValue .applyDimension(TypedValue.COMPLEX_UNIT_DIP, EstimatedKeyboardDP, activityRootView.getResources().getDisplayMetrics()); // Conclude whether the keyboard is shown or not. activityRootView.getWindowVisibleDisplayFrame(r); int heightDiff = activityRootView.getRootView().getHeight() - (r.bottom - r.top); boolean isshown = heightDiff >= estimatedKeyboardHeight; if (isShown == wasOpened) { Log.e("Keyboard state", "Ignoring global layout change..."); return; } wasOpened = isShown; listener.onVisibilityChanged(isShown); } }); }}
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本文标题: Android项目中怎么显示与隐藏软键盘
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