在添加了这些线条后，对我来说很有用。

globalSearchBarMainActivity.setEnabled(true);
globalSearchBarMainActivity.requestFocus();

因为我的自动完整文本视图方法被隐藏，即可见:消失

所以需要加上上面两行

InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(globalSearchBarMainActivity, InputMethodManager.SHOW_IMPLICIT);

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;
    }
}

我把这里的所有东西结合起来，对我来说是有效的:

public static void showKeyboardWithFocus(View v, Activity a) {
    try {
        v.requestFocus();
        InputMethodManager imm = (InputMethodManager) a.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(v, InputMethodManager.SHOW_IMPLICIT);
        a.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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) {
        }
    });

我在各种不同的情况下都有同样的问题，我发现的解决方案在一些情况下工作，但在其他情况下不工作，所以这里是一个在我发现的大多数情况下工作的组合解决方案:

public static void showVirtualKeyboard(Context context, final View view) {
    if (context != null) {
        final InputMethodManager imm =  (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
        view.clearFocus();

        if(view.isShown()) {
            imm.showSoftInput(view, 0);
            view.requestFocus();
        } else {
            view.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
                @Override
                public void onViewAttachedToWindow(View v) {
                    view.post(new Runnable() {
                        @Override
                        public void run() {
                            view.requestFocus();
                            imm.showSoftInput(view, 0);
                        }
                    });

                    view.removeOnAttachStateChangeListener(this);
                }

                @Override
                public void onViewDetachedFromWindow(View v) {
                    view.removeOnAttachStateChangeListener(this);
                }
            });
        }
    }
}

没有一个答案对我有用。这里有一个简单的方法。

searchEditText.setVisibility(View.VISIBLE);
                final Handler handler=new Handler();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        searchEditText.requestFocus();
                    }
                }, 400);

只是将requestFocus()方法延迟了400ms。