android监听键盘弹出or隐藏方法

1.创建自定义KeyboardListenRelativeLayout,继承自RelativeLayout

public class KeyboardListenRelativeLayout extends RelativeLayout {  private static final String TAG = KeyboardListenRelativeLayout.class.getSimpleName();  public static final byte KEYBOARD_STATE_SHOW = -3; public static final byte KEYBOARD_STATE_HIDE = -2; public static final byte KEYBOARD_STATE_INIT = -1;  //true: show;  false:hide private boolean lastStatus = false;  private IOnKeyboardStateChangedListener onKeyboardStateChangedListener;  public KeyboardListenRelativeLayout(Context context) {  super(context);  init(); } public KeyboardListenRelativeLayout(Context context, AttributeSet attrs) {  super(context, attrs);  init(); }  public KeyboardListenRelativeLayout(Context context, AttributeSet attrs, int defStyle) {  super(context, attrs, defStyle);  init(); }  public void setOnKeyboardStateChangedListener(IOnKeyboardStateChangedListener onKeyboardStateChangedListener) {  this.onKeyboardStateChangedListener = onKeyboardStateChangedListener; }  public void init() {  getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {   private int screenheight = 0;   public int getHeight()   {    if(screenheight>0) return screenheight;    WindowManager wm = (WindowManager) getContext()                     .getSystemService(Context.WINDOW_SERVICE);          //int width = wm.getDefaultDisplay().getWidth();        int height = wm.getDefaultDisplay().getHeight();        screenheight = height;        return screenheight;       }            public void onGlobalLayout() {                // TODO Auto-generated method stub                Rect r = new Rect();                ((Activity)getContext()).getWindow().getDecorView().getWindowVisibleDisplayFrame(r); ;                int screenHeight = getHeight();                int heightDiff = screenHeight - (r.bottom - r.top);                Log.d("Keyboard Size", "Size: " + heightDiff);                boolean visible = Math.abs(heightDiff) > screenHeight / 3;                                if(lastStatus!=visible)                {                 lastStatus = visible;                 Log.d("Keyboard", "Keyboard " + (visible?"opened":"closed"));                 if(!visible&&onKeyboardStateChangedListener != null) {         onKeyboardStateChangedListener.onKeyboardStateChanged(KEYBOARD_STATE_HIDE);        }                 if(visible&&onKeyboardStateChangedListener != null) {         onKeyboardStateChangedListener.onKeyboardStateChanged(KEYBOARD_STATE_SHOW);        }                }            }        }); }  public interface IOnKeyboardStateChangedListener {  public void onKeyboardStateChanged(int state); }}

2.配置到XML

<?xml version="1.0" encoding="utf-8"?><com.ziines.it.views.KeyboardListenRelativeLayout  xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  xmlns:fresco="http://schemas.android.com/apk/res-auto"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:id="@+id/ll_chat_layout"    >

3.Activity设置

mLl_chat_layout.setOnKeyboardStateChangedListener(new KeyboardListenRelativeLayout.IOnKeyboardStateChangedListener() {  public void onKeyboardStateChanged(int state) {    switch (state) {      case KeyboardListenRelativeLayout.KEYBOARD_STATE_HIDE:        NMGLog.i(TAG,"隐藏");        break;      case KeyboardListenRelativeLayout.KEYBOARD_STATE_SHOW:        NMGLog.i(TAG,"弹起");        break;      default:        break;    }  }});