我几乎尝试了所有这些答案，我遇到了一些随机问题，特别是三星galaxy s5。

我最终的结果是强迫表演和隐藏，而且效果很好：

/**
 * Force show softKeyboard.
 */
public static void forceShow(@NonNull Context context) {
    InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
}

/**
 * Force hide softKeyboard.
 */
public static void forceHide(@NonNull Activity activity, @NonNull EditText editText) {
    if (activity.getCurrentFocus() == null || !(activity.getCurrentFocus() instanceof EditText)) {
        editText.requestFocus();
    }
    InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
    activity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
}

public void setKeyboardVisibility(boolean show) {
    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    if(show){
        imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
    }else{
        imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(),0);
    }
}

这对我所有奇怪的键盘行为都有效

private boolean isKeyboardVisible() {
    Rect r = new Rect();
    //r will be populated with the coordinates of your view that area still visible.
    mRootView.getWindowVisibleDisplayFrame(r);

    int heightDiff = mRootView.getRootView().getHeight() - (r.bottom - r.top);
    return heightDiff > 100; // if more than 100 pixels, its probably a keyboard...
}

protected void showKeyboard() {
    if (isKeyboardVisible())
        return;
    InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    if (getCurrentFocus() == null) {
        inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
    } else {
        View view = getCurrentFocus();
        inputMethodManager.showSoftInput(view, InputMethodManager.SHOW_FORCED);
    }
}

protected void hideKeyboard() {
    if (!isKeyboardVisible())
        return;
    InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    View view = getCurrentFocus();
    if (view == null) {
        if (inputMethodManager.isAcceptingText())
            inputMethodManager.toggleSoftInput(InputMethodManager.HIDE_NOT_ALWAYS, 0);
    } else {
        if (view instanceof EditText)
            ((EditText) view).setText(((EditText) view).getText().toString()); // reset edit text bug on some keyboards bug
        inputMethodManager.hideSoftInputFromInputMethod(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
    }
}

以下是最佳解决方案

解决方案1）将inputType设置为“text”

<EditText
android:id="@+id/my_edit_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="Tap here to type"
android:inputType="text" />

这也可以通过编程实现。方法setInputType（）（从TextView继承）。

EditText editText = (EditText) findViewById(R.id.my_edit_text);
editText.setRawInputType(InputType.TYPE_CLASS_TEXT | 
InputType.TYPE_TEXT_VARIATION_NORMAL);

解决方案2）使用InputMethodManager.hideSoftInputFromWindow（）

InputMethodManager imm = 
(InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(myEditText.getWindowToken(), 0);

or

InputMethodManager imm = (InputMethodManager) 
getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(myEditText.getWindowToken(), 
InputMethodManager.HIDE_NOT_ALWAYS);

我创建了一个布局，部分来自xml，部分来自自定义布局引擎，所有这些都在代码中处理。对我来说，唯一有效的方法是跟踪键盘是否打开，并使用如下键盘切换方法：

public class MyActivity extends Activity
{
    /** This maintains true if the keyboard is open. Otherwise, it is false. */
    private boolean isKeyboardOpen = false;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        LayoutInflater inflater;
        inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View contentView = inflater.inflate(context.getResources().getIdentifier("main", "layout", getPackageName()), null);

        setContentView(contentView);
        contentView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() 
        {
            public void onGlobalLayout() 
            {
                Rect r = new Rect();
                contentView.getWindowVisibleDisplayFrame(r);
                int heightDiff = contentView.getRootView().getHeight() - (r.bottom - r.top);
                if (heightDiff > 100) 
                    isKeyboardVisible = true;
                else
                    isKeyboardVisible = false;
             });
         }
    }

    public void closeKeyboardIfOpen()
    {
        InputMethodManager imm;
        imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        if (isKeyboardVisible)
            imm.toggleSoftInput(InputMethodManager.HIDE_IMPLICIT_ONLY, 0);
    }   
}

我有一个例子，我的EditText也可以位于AlertDialog中，所以键盘应该在关闭时关闭。以下代码似乎在任何地方都有效：

public static void hideKeyboard( Activity activity ) {
    InputMethodManager imm = (InputMethodManager)activity.getSystemService( Context.INPUT_METHOD_SERVICE );
    View f = activity.getCurrentFocus();
    if( null != f && null != f.getWindowToken() && EditText.class.isAssignableFrom( f.getClass() ) )
        imm.hideSoftInputFromWindow( f.getWindowToken(), 0 );
    else 
        activity.getWindow().setSoftInputMode( WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN );
}