你可以通过以下步骤来实现这一点:

Make the parent view(content view of your activity) clickable and focusable by adding the following attributes android:clickable="true" android:focusableInTouchMode="true" Implement a hideKeyboard() method public void hideKeyboard(View view) { InputMethodManager inputMethodManager =(InputMethodManager)getSystemService(Activity.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0); } Lastly, set the onFocusChangeListener of your edittext. edittext.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View v, boolean hasFocus) { if (!hasFocus) { hideKeyboard(v); } } });

正如下面的一条评论所指出的，如果父视图是ScrollView，这可能不起作用。对于这种情况，clickable和focusableInTouchMode可以直接添加到ScrollView下面的视图上。

有一个更简单的方法，基于iPhone同样的问题。简单地覆盖背景的布局触摸事件，其中包含编辑文本。只需在活动的OnCreate中使用这段代码(login_fondo是根布局):

    final LinearLayout llLogin = (LinearLayout)findViewById(R.id.login_fondo);
    llLogin.setOnTouchListener(
            new OnTouchListener()
            {
                @Override
                public boolean onTouch(View view, MotionEvent ev) {
                    InputMethodManager imm = (InputMethodManager) mActivity.getSystemService(
                            android.content.Context.INPUT_METHOD_SERVICE);
                    imm.hideSoftInputFromWindow(mActivity.getCurrentFocus().getWindowToken(), 0);
                    return false;
                }
            });

下面是fje回答的另一个变体，它解决了sosite提出的问题。

这里的思想是在Activity的dispatchTouchEvent方法中处理向下和向上操作。在按下操作时，我们会记录当前聚焦的视图(如果有的话)，以及触摸是否在其中，并为以后保存这两个信息。

在向上操作中，我们首先分派，以允许另一个视图潜在地获得焦点。如果在那之后，当前聚焦的视图是最初聚焦的视图，向下触摸在那个视图内，然后我们让键盘打开。

如果当前聚焦视图与最初聚焦视图不同并且它是一个EditText，那么我们也让键盘打开。

否则我们关闭它。

综上所述，其工作原理如下:

when touching inside a currently focused EditText, the keyboard stays open when moving from a focused EditText to another EditText, the keyboard stays open (doesn't close/reopen) when touching anywhere outside a currently focused EditText that is not another EditText, the keyboard closes when long-pressing in an EditText to bring up the contextual action bar (with the cut/copy/paste buttons), the keyboard stays open, even though the UP action took place outside the focused EditText (which moved down to make room for the CAB). Note, though, that when you tap on a button in the CAB, it will close the keyboard. That may or may not be desirable; if you want to cut/copy from one field and paste to another, it would be. If you want to paste back into the same EditText, it would not be. when the focused EditText is at the bottom of the screen and you long-click on some text to select it, the EditText keeps focus and therefore the keyboard opens like you want, because we do the "touch is within view bounds" check on the down action, not the up action. private View focusedViewOnActionDown; private boolean touchWasInsideFocusedView; @Override public boolean dispatchTouchEvent(MotionEvent ev) { switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: focusedViewOnActionDown = getCurrentFocus(); if (focusedViewOnActionDown != null) { final Rect rect = new Rect(); final int[] coordinates = new int[2]; focusedViewOnActionDown.getLocationOnScreen(coordinates); rect.set(coordinates[0], coordinates[1], coordinates[0] + focusedViewOnActionDown.getWidth(), coordinates[1] + focusedViewOnActionDown.getHeight()); final int x = (int) ev.getX(); final int y = (int) ev.getY(); touchWasInsideFocusedView = rect.contains(x, y); } break; case MotionEvent.ACTION_UP: if (focusedViewOnActionDown != null) { // dispatch to allow new view to (potentially) take focus final boolean consumed = super.dispatchTouchEvent(ev); final View currentFocus = getCurrentFocus(); // if the focus is still on the original view and the touch was inside that view, // leave the keyboard open. Otherwise, if the focus is now on another view and that view // is an EditText, also leave the keyboard open. if (currentFocus.equals(focusedViewOnActionDown)) { if (touchWasInsideFocusedView) { return consumed; } } else if (currentFocus instanceof EditText) { return consumed; } // the touch was outside the originally focused view and not inside another EditText, // so close the keyboard InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow( focusedViewOnActionDown.getWindowToken(), 0); focusedViewOnActionDown.clearFocus(); return consumed; } break; } return super.dispatchTouchEvent(ev); }

活动

 @Override
 public boolean dispatchTouchEvent(MotionEvent ev) {
     ScreenUtils.hideKeyboard(this, findViewById(android.R.id.content).getWindowToken());
     return super.dispatchTouchEvent(ev);
 }

ScreenUtils

 public static void hideKeyboard(Context context, IBinder windowToken) {
     InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
     imm.hideSoftInputFromWindow(windowToken, InputMethodManager.HIDE_NOT_ALWAYS);
 }

我知道这个线程是相当古老的，正确的答案似乎是有效的，有很多工作的解决方案，但我认为下面所述的方法可能有一个额外的好处，关于效率和优雅。

我的所有活动都需要这种行为，所以我创建了一个从类Activity继承的类CustomActivity，并“钩住”dispatchTouchEvent函数。主要有两个条件需要注意:

如果焦点没有改变，并且有人在当前输入域之外轻敲，则忽略输入法 如果焦点已经改变，并且下一个焦点元素不是任何类型的输入字段的实例，则驳回IME

这是我的结果:

@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
    if(ev.getAction() == MotionEvent.ACTION_UP) {
        final View view = getCurrentFocus();

        if(view != null) {
            final boolean consumed = super.dispatchTouchEvent(ev);

            final View viewTmp = getCurrentFocus();
            final View viewNew = viewTmp != null ? viewTmp : view;

            if(viewNew.equals(view)) {
                final Rect rect = new Rect();
                final int[] coordinates = new int[2];

                view.getLocationOnScreen(coordinates);

                rect.set(coordinates[0], coordinates[1], coordinates[0] + view.getWidth(), coordinates[1] + view.getHeight());

                final int x = (int) ev.getX();
                final int y = (int) ev.getY();

                if(rect.contains(x, y)) {
                    return consumed;
                }
            }
            else if(viewNew instanceof EditText || viewNew instanceof CustomEditText) {
                return consumed;
            }

            final InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

            inputMethodManager.hideSoftInputFromWindow(viewNew.getWindowToken(), 0);

            viewNew.clearFocus();

            return consumed;
        }
    }       

    return super.dispatchTouchEvent(ev);
}

附注:另外，我将这些属性分配给根视图，使它能够清除每个输入字段的焦点，并防止输入字段获得活动启动的焦点(使内容视图为“焦点捕获器”):

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    final View view = findViewById(R.id.content);

    view.setFocusable(true);
    view.setFocusableInTouchMode(true);
}

对于那些正在为此寻找Xamarin代码的人，请访问:

  public override bool DispatchTouchEvent(MotionEvent ev)
    {
        try
        {
            View view = CurrentFocus;
            if (view != null && (ev.Action == MotionEventActions.Up || ev.Action == MotionEventActions.Move) && view is EditText && !view.Class.Name.StartsWith("android.webkit."))
            {
                int[] Touch = new int[2];
                view.GetLocationOnScreen(Touch);
                float x = ev.RawX + view.Left - Touch[0];
                float y = ev.RawY + view.Top - Touch[1];
                if (x < view.Left || x > view.Right || y < view.Top || y > view.Bottom)
                    ((InputMethodManager)GetSystemService(InputMethodService)).HideSoftInputFromWindow((Window.DecorView.ApplicationWindowToken), 0);
            }
        }
        catch (System.Exception ex)
        {
           
        }

        return base.DispatchTouchEvent(ev);
    }