EditText失去焦点时，键盘收起的布局

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最近做项目要求实现当点击edittext之外的view时，键盘收起的功能。google了一大堆，也没有什么思路，无奈自己写了一个。

实现原理很简单：

1.dispatchTouchEvent中获取点击事件坐标

2.根据坐标找到子view，判断子view，

a.为空说明点击了空白处，收起键盘

b.不为空，判断view是不是edittext，如果不是，收起键盘

代码：

public class EditFocusLayout extends LinearLayout {    private final static String TAG = "EditFocusLayout";    private Context mContext;    public EditFocusLayout(Context context, AttributeSet attrs) {        super(context, attrs);        mContext = context;    }    @Override    public boolean dispatchTouchEvent(MotionEvent ev) {        int x = (int) ev.getX();        int y = (int) ev.getY();        if (ev.getAction() == MotionEvent.ACTION_DOWN) {            View targetView = getTouchTargetView(this, x, y);            InputMethodManager imm = (InputMethodManager)mContext.getSystemService(Context.INPUT_METHOD_SERVICE);            if (targetView == null) {//为空直接收起键盘                imm.hideSoftInputFromWindow(this.getWindowToken(), 0);            } else if (!(targetView instanceof EditText)){//不为edittext也收起键盘                imm.hideSoftInputFromWindow(targetView.getWindowToken(), 0);            }        }        return super.dispatchTouchEvent(ev);    }    /**     * 获取点击到的view     * @param viewGroup     * @param x     * @param y     * @return     */    private View getTouchTargetView(ViewGroup viewGroup, int x, int y) {        View touchView = null;        for (int i = 0; i < viewGroup.getChildCount(); i ++) {            View view = viewGroup.getChildAt(i);            if (view instanceof ViewGroup) {                View tempView = getTouchTargetView((ViewGroup) view, x, y);                if (tempView != null) touchView = tempView;            } else {                if (isTouchPointInView(view, x, y)) touchView = view;            }        }        return touchView;    }    private boolean isTouchPointInView(View view, int x, int y) {        Rect rect = new Rect(view.getLeft(), view.getTop(), view.getRight(), view.getBottom());        return rect.contains(x, y);    }}

源码

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