Android 软键盘的监听（监听高度，是否显示）

转自：http://blog.csdn.net/daguaio_o/article/details/47127993

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。

public class SoftKeyboardUtil {

public static void observeSoftKeyboard(Activity activity, final OnSoftKeyboardChangeListener listener) {

final View decorView = activity.getWindow().getDecorView();

decorView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

int previousKeyboardHeight = -1;

@Override

public void onGlobalLayout() {

Rect rect = new Rect();

decorView.getWindowVisibleDisplayFrame(rect);

int displayHeight = rect.bottom - rect.top;

int height = decorView.getHeight();

int keyboardHeight = height - displayHeight;

if (previousKeyboardHeight != keyboardHeight) {

boolean hide = (double) displayHeight / height > 0.8;

listener.onSoftKeyBoardChange(keyboardHeight, !hide);

}

previousKeyboardHeight = height;

}

});

}

public interface OnSoftKeyboardChangeListener {

void onSoftKeyBoardChange(int softKeybardHeight, boolean visible);

}

}