Android(安卓)点击EditText以外区域，隐藏键盘

主要包括以下两点：

1.监听键盘是否是显示状态

2.判断点击的位置是否是EditText

当键盘显示并且点击了除EditText以外的区域时，隐藏键盘

1.以下用来监听键盘是否显示（别人写的，忘记在哪看到的了~）

public class SoftKeyBoardListener {    private View rootView;//activity的根视图    int rootViewVisibleHeight;//纪录根视图的显示高度    private OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener;    public SoftKeyBoardListener(Activity activity) {        //获取activity的根视图        rootView = activity.getWindow().getDecorView();        //监听视图树中全局布局发生改变或者视图树中的某个视图的可视状态发生改变        rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {            @Override            public void onGlobalLayout() {                //获取当前根视图在屏幕上显示的大小                Rect r = new Rect();                //获取rootView在窗体的可视区域                rootView.getWindowVisibleDisplayFrame(r);                int visibleHeight = r.height();                if (rootViewVisibleHeight == 0) {                    rootViewVisibleHeight = visibleHeight;                    return;                }                //根视图显示高度没有变化，可以看作软键盘显示／隐藏状态没有改变                if (rootViewVisibleHeight == visibleHeight) {                    return;                }                //根视图显示高度变小超过200，可以看作软键盘显示了                if (rootViewVisibleHeight - visibleHeight > 200) {                    if (onSoftKeyBoardChangeListener != null) {                        onSoftKeyBoardChangeListener.keyBoardShow(rootViewVisibleHeight - visibleHeight);                    }                    rootViewVisibleHeight = visibleHeight;                    return;                }                //根视图显示高度变大超过200，可以看作软键盘隐藏了                if (visibleHeight - rootViewVisibleHeight > 200) {                    if (onSoftKeyBoardChangeListener != null) {                        onSoftKeyBoardChangeListener.keyBoardHide(visibleHeight - rootViewVisibleHeight);                    }                    rootViewVisibleHeight = visibleHeight;                    return;                }            }        });    }    private void setOnSoftKeyBoardChangeListener(OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener) {        this.onSoftKeyBoardChangeListener = onSoftKeyBoardChangeListener;    }    public interface OnSoftKeyBoardChangeListener {        void keyBoardShow(int height);        void keyBoardHide(int height);    }    public static void setListener(Activity activity, OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener) {        SoftKeyBoardListener softKeyBoardListener = new SoftKeyBoardListener(activity);        softKeyBoardListener.setOnSoftKeyBoardChangeListener(onSoftKeyBoardChangeListener);    }}

public static boolean keyboardIsShown = false;@Overridepublic void onCreate(Bundle bundle) {    super.onCreate(bundle);         SoftKeyBoardListener.setListener(this, new SoftKeyBoardListener.OnSoftKeyBoardChangeListener() {        @Override        public void keyBoardShow(int height) {            keyboardIsShown = true;        }        @Override        public void keyBoardHide(int height) {            keyboardIsShown = false;        }    });}

2.重写dispatchTouchEvent,判断点击的位置

public boolean dispatchTouchEvent(MotionEvent motionEvent) {    if (motionEvent.getAction() == 0) {        View v = getCurrentFocus();        if (isShouldHideInput(v, motionEvent) && keyboardIsShown) {            hideSoftInput(v.getWindowToken());        }    }    return super.dispatchTouchEvent(motionEvent);}

private void hideSoftInput(IBinder token) {    if (token != null) {        InputMethodManager im = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);        im.hideSoftInputFromWindow(token,                InputMethodManager.HIDE_NOT_ALWAYS);    }}private boolean isShouldHideInput(View v, MotionEvent event) {    if (v != null && (v instanceof EditText)) {        int[] l = { 0, 0 };        v.getLocationInWindow(l);        int left = l[0], top = l[1], bottom = top + v.getHeight(), right = left                + v.getWidth();        if (event.getX() > left && event.getX() < right                && event.getY() > top && event.getY() < bottom) {            // 点击EditText的事件，忽略它。            return false;        } else {            return true;        }    }    // 如果焦点不是EditText则忽略，这个发生在视图刚绘制完，第一个焦点不在EditView上，和用户用轨迹球选择其他的焦点    return false;}

主要包括以下两点：

1.监听键盘是否是显示状态

2.判断点击的位置是否是EditText

当键盘显示并且点击了除EditText以外的区域时，隐藏键盘

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