废话少说直接上代码:
import android.graphics.Rect; import android.view.View; import android.view.ViewTreeObserver; import java.util.LinkedList; import java.util.List; /* * Description: * File: SoftKeyboardStateHelper.java * Author: k * Version: V100R001C01 * Create: 2018/2/4 14:50 * * Changes (from 2018/2/4) * ----------------------------------------------------------------- * 2018/2/4 : Changes SoftKeyboardStateHelper.java (k); * ----------------------------------------------------------------- */ public class SoftKeyboardStateHelper implements ViewTreeObserver.OnGlobalLayoutListener { public interface SoftKeyboardStateListener { void onSoftKeyboardOpened(int keyboardHeightInPx); void onSoftKeyboardClosed(); } private final List<SoftKeyboardStateListener> listeners = new LinkedList<SoftKeyboardStateListener>(); private final View activityRootView; private int lastSoftKeyboardHeightInPx; private boolean isSoftKeyboardOpened; public SoftKeyboardStateHelper(View activityRootView) { this(activityRootView, false); } public SoftKeyboardStateHelper(View activityRootView, boolean isSoftKeyboardOpened) { this.activityRootView = activityRootView; this.isSoftKeyboardOpened = isSoftKeyboardOpened; activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(this); } @Override public void onGlobalLayout() { final Rect r = new Rect(); //r will be populated with the coordinates of your view that area still visible. activityRootView.getWindowVisibleDisplayFrame(r); final int heightDiff = activityRootView.getRootView().getHeight() - (r.bottom - r.top); if (!isSoftKeyboardOpened && heightDiff > 100) { // if more than 100 pixels, its probably a keyboard... isSoftKeyboardOpened = true; notifyOnSoftKeyboardOpened(heightDiff); } else if (isSoftKeyboardOpened && heightDiff < 100) { isSoftKeyboardOpened = false; notifyOnSoftKeyboardClosed(); } } public void setIsSoftKeyboardOpened(boolean isSoftKeyboardOpened) { this.isSoftKeyboardOpened = isSoftKeyboardOpened; } public boolean isSoftKeyboardOpened() { return isSoftKeyboardOpened; } /** * Default value is zero (0) * @return last saved keyboard height in px */ public int getLastSoftKeyboardHeightInPx() { return lastSoftKeyboardHeightInPx; } public void addSoftKeyboardStateListener(SoftKeyboardStateListener listener) { listeners.add(listener); } public void removeSoftKeyboardStateListener(SoftKeyboardStateListener listener) { listeners.remove(listener); } private void notifyOnSoftKeyboardOpened(int keyboardHeightInPx) { this.lastSoftKeyboardHeightInPx = keyboardHeightInPx; for (SoftKeyboardStateListener listener : listeners) { if (listener != null) { listener.onSoftKeyboardOpened(keyboardHeightInPx); } } } private void notifyOnSoftKeyboardClosed() { for (SoftKeyboardStateListener listener : listeners) { if (listener != null) { listener.onSoftKeyboardClosed(); } } } }
然后具体调用:
//键盘监听 final SoftKeyboardStateHelper softKeyboardStateHelper = new SoftKeyboardStateHelper(findViewById(R.id.activityRoot)); softKeyboardStateHelper.addSoftKeyboardStateListener(new SoftKeyboardStateHelper.SoftKeyboardStateListener() { @Override public void onSoftKeyboardOpened(int keyboardHeightInPx) { //打开 } @Override public void onSoftKeyboardClosed() { //关闭 } });
最后根据需要做自己的逻辑处理就好了。