Android官方本身没有提供一共好的方法来对软键盘进行监听，但我们实际应用时，很多地方都需要针对软键盘来对UI进行一些优化。
以下是整理出来的一个不错的方法，大家可以使用。
不过要注意的是，由于是使用ViewTreeObserver来进行监听，所以每次layout有所改变的话，都会触发，所以listner里面如果有改变layout的方法的话，要注意不要陷入无限触发循环了，这时需要加入一些标记值来规避，这个可以参考代码注释
public class SoftKeyboardUtil { public static final String TAG = "SoftKeyboardUtil"; public static void observeSoftKeyboard(Activity activity, final OnSoftKeyboardChangeListener listener) { final View decorView = activity.getWindow().getDecorView(); decorView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { Rect rect = new Rect(); decorView.getWindowVisibleDisplayFrame(rect); int displayHeight = rect.bottom - rect.top; int height = decorView.getHeight(); boolean hide = (double) displayHeight / height > 0.8; if (Log.isLoggable(TAG, Log.DEBUG)) { Log.d(TAG, "DecorView display hight = " + displayHeight); Log.d(TAG, "DecorView hight = " + height); Log.d(TAG, "softkeyboard visible = " + !hide); } listener.onSoftKeyBoardChange(height - displayHeight, !hide); } }); } /** * Note: if you change layout in this method, maybe this method will repeat because the ViewTreeObserver.OnGlobalLayoutListener will repeat So maybe you need do some handle(ex: add some flag to avoid repeat) in this callback * * Example: * * private int previousHeight = -1; private void setupKeyboardLayoutWhenEdit() { SoftKeyboardUtil.observeSoftKeyBoard(this, new OnSoftKeyboardChangeListener() { * * @Override public void onSoftKeyBoardChange(int softkeybardHeight, boolean visible) { if (previousHeight == softkeybardHeight) { return; } previousHeight = softkeybardHeight; //code for change layout } }); } * * * */ public interface OnSoftKeyboardChangeListener { void onSoftKeyBoardChange(int softKeybardHeight, boolean visible); }}版权声明：本文为博主原创文章，未经博主允许不得转载。