我在使用视图动画时也遇到了类似的问题。所以我已经放了一个动画监听器，以确保在尝试请求对所显示的编辑文本进行键盘访问之前，我将等待动画结束。

    bottomUp.setAnimationListener(new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation animation) {
        }

        @Override
        public void onAnimationEnd(Animation animation) {
            if (textToFocus != null) {
                // Position cursor at the end of the text
                textToFocus.setSelection(textToFocus.getText().length());
                // Show keyboard
                InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                imm.showSoftInput(textToFocus, InputMethodManager.SHOW_IMPLICIT);
            }
        }

        @Override
        public void onAnimationRepeat(Animation animation) {
        }
    });

信不信由你，当我发现活动动画可以禁用软键盘时，我的软键盘问题得到了解决。当你用

i.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);

and

overridePendingTransition(0, 0);

它可以隐藏软键盘，没有办法显示它。

您还可以创建EditText的自定义扩展，该扩展在接收到焦点时知道打开软键盘。这就是我最后要做的。以下是对我有效的方法:

public class WellBehavedEditText extends EditText {
    private InputMethodManager inputMethodManager;
    private boolean showKeyboard = false;

    public WellBehavedEditText(Context context) {
        super(context);
        this.initializeWellBehavedEditText(context);
    }

    public WellBehavedEditText(Context context, AttributeSet attributes) {
        super(context, attributes);
        this.initializeWellBehavedEditText(context);
    }

    public WellBehavedEditText(Context context, AttributeSet attributes, int defStyleAttr) {
        super(context, attributes, defStyleAttr);
        this.initializeWellBehavedEditText(context);
    }

    public WellBehavedEditText(Context context, AttributeSet attributes, int defStyleAttr, int defStyleRes) {
        super(context, attributes, defStyleAttr, defStyleRes);
        this.initializeWellBehavedEditText(context);
    }

    private void initializeWellBehavedEditText(Context context) {
        this.inputMethodManager = (InputMethodManager)context.getSystemService(Context.INPUT_METHOD_SERVICE);

        final WellBehavedEditText editText = this;
        this.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                if(showKeyboard) {
                    showKeyboard = !(inputMethodManager.showSoftInput(editText, InputMethodManager.SHOW_FORCED));
                }
            }
        });
    }

    @Override
    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
        if(!focused) this.showKeyboard = false;
        super.onFocusChanged(focused, direction, previouslyFocusedRect);
    }

    @Override
    public boolean requestFocus(int direction, Rect previouslyFocusedRect) {
        boolean result = super.requestFocus(direction, previouslyFocusedRect);
        this.showKeyboard = true;
        final WellBehavedEditText self = this;
        this.post(new Runnable() {
            @Override
            public void run() {
                showKeyboard = !(inputMethodManager.showSoftInput(self, InputMethodManager.SHOW_FORCED));
            }
        });
        return result;
    }
}

如果EditText是在回收器或ListView和/或这有禁用状态使用下面的代码。

public static void showKeyboardByFocus(final View view)
    {
        view.requestFocus();

        InputMethodManager keyboard = SystemMaster.getInputMethodManager();
        keyboard.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);

        Runnable re = new Runnable()
        {
            @Override
            public void run()
            {
                view.setEnabled(true);
                view.requestFocus();
            }
        };

        Handler h = new Handler(Looper.getMainLooper());
        h.postDelayed(re, 360);
    }

代码片段……

public void hideKeyboard(Context activityContext){

    InputMethodManager imm = (InputMethodManager)
            activityContext.getSystemService(Context.INPUT_METHOD_SERVICE);

    //android.R.id.content ( http://stackoverflow.com/a/12887919/2077479 )
    View rootView = ((Activity) activityContext)
            .findViewById(android.R.id.content).getRootView();

    imm.hideSoftInputFromWindow(rootView.getWindowToken(), 0);
}

public void showKeyboard(Context activityContext, final EditText editText){

    final InputMethodManager imm = (InputMethodManager)
            activityContext.getSystemService(Context.INPUT_METHOD_SERVICE);

    if (!editText.hasFocus()) {
        editText.requestFocus();
    }

    editText.post(new Runnable() {
        @Override
        public void run() {
            imm.showSoftInput(editText, InputMethodManager.SHOW_FORCED);
        }
    });
}

在尝试了每个单独的答案后，键盘没有出现。我有几个小时来解决这个问题，所以希望将来有人不要浪费它。

对于我来说，这个问题不是编程问题，我是在模拟器上测试，手机有硬件键盘，所以默认情况下它不会显示软件键盘，要解决这个问题，你需要确保通过关闭硬件键盘或启用软键盘来显示模拟器中的软输入。

我们只在API-15和16上遇到过这种情况。 下面是如何做到这一点的屏幕截图

关于Geny Motion模拟器:

在Android Studio模拟器: