Android 如何防止显示软键盘后弹出窗口位移？

我创建了带有编辑文本的WindowPopup。当我专注于它时，软键盘会显示并将弹出窗口移到上限上方，所以我看不到我正在键入的内容。我想显示键盘，而不移动视图，就在视图上方。 我读到我可以为它更改softInputMode，所以我创建了一个从EditText扩展而来的类，并尝试在onFocusListener中更改inputMode，但没有帮助

setOnFocusChangeListener(new OnFocusChangeListener() {

    @Override
    public void onFocusChange(View veiw, boolean has_focus) {

        if (has_focus) {
            //Try to change input mode to prevent displacing
            ((Activity) getContext()).getWindow().setSoftInputMode(
            WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING);
        } else {
            //.. return back previous input mode
        }

});

我这样做了，因为我只需要在这个弹出窗口中使用这种行为，但我甚至尝试更改我的manifets文件中的action属性

android:windowSoftInputMode="adjustNothing"

或

我可以在不移动视图的情况下显示键盘吗

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另外，我正在使用Android API 15

当PopupWindow创建弹出视图时，它会将新的WindowManager.LayoutParams设置为softInputMode，这会覆盖Window.softInputMode的行为。这里是来自PopupWindow的一段代码

private WindowManager.LayoutParams createPopupLayout(IBinder token) {

    WindowManager.LayoutParams p = new WindowManager.LayoutParams();
    p.gravity = Gravity.LEFT | Gravity.TOP;
    p.width = mLastWidth = mWidth;
    p.height = mLastHeight = mHeight;
    if (mBackground != null) {
        p.format = mBackground.getOpacity();
    } else {
        p.format = PixelFormat.TRANSLUCENT;
    }
    p.flags = computeFlags(p.flags);
    p.type = mWindowLayoutType;
    p.token = token;
    /*mSoftInputMode is the private field which is by default equals
      to WindowManager.LayoutParams.SOFT_INPUT_STATE_UNCHANGED 
    */
    p.softInputMode = mSoftInputMode;
}

setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING);

所以要更改softInputMode，只需调用PopupWindow的public方法

private WindowManager.LayoutParams createPopupLayout(IBinder token) {

    WindowManager.LayoutParams p = new WindowManager.LayoutParams();
    p.gravity = Gravity.LEFT | Gravity.TOP;
    p.width = mLastWidth = mWidth;
    p.height = mLastHeight = mHeight;
    if (mBackground != null) {
        p.format = mBackground.getOpacity();
    } else {
        p.format = PixelFormat.TRANSLUCENT;
    }
    p.flags = computeFlags(p.flags);
    p.type = mWindowLayoutType;
    p.token = token;
    /*mSoftInputMode is the private field which is by default equals
      to WindowManager.LayoutParams.SOFT_INPUT_STATE_UNCHANGED 
    */
    p.softInputMode = mSoftInputMode;
}

setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING);

而且不需要记住以前的软输入法，因为这种行为只适用于此PopupWindow

private WindowManager.LayoutParams createPopupLayout(IBinder token) {

    WindowManager.LayoutParams p = new WindowManager.LayoutParams();
    p.gravity = Gravity.LEFT | Gravity.TOP;
    p.width = mLastWidth = mWidth;
    p.height = mLastHeight = mHeight;
    if (mBackground != null) {
        p.format = mBackground.getOpacity();
    } else {
        p.format = PixelFormat.TRANSLUCENT;
    }
    p.flags = computeFlags(p.flags);
    p.type = mWindowLayoutType;
    p.token = token;
    /*mSoftInputMode is the private field which is by default equals
      to WindowManager.LayoutParams.SOFT_INPUT_STATE_UNCHANGED 
    */
    p.softInputMode = mSoftInputMode;
}

setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING);