以下是我从Square得到的一个更可靠的解决方案:

fun View.focusAndShowKeyboard() { /** * This is to be called when the window already has focus. */ fun View.showTheKeyboardNow() { if (isFocused) { post { // We still post the call, just in case we are being notified of the windows focus // but InputMethodManager didn't get properly setup yet. val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager imm.showSoftInput(this, InputMethodManager.SHOW_IMPLICIT) } } } requestFocus() if (hasWindowFocus()) { // No need to wait for the window to get focus. showTheKeyboardNow() } else { // We need to wait until the window gets focus. viewTreeObserver.addOnWindowFocusChangeListener( object : ViewTreeObserver.OnWindowFocusChangeListener { override fun onWindowFocusChanged(hasFocus: Boolean) { // This notification will arrive just before the InputMethodManager gets set up. if (hasFocus) { this@focusAndShowKeyboard.showTheKeyboardNow() // It’s very important to remove this listener once we are done. viewTreeObserver.removeOnWindowFocusChangeListener(this) } } }) } }

代码从这里开始。

final InputMethodManager keyboard = (InputMethodManager) ctx.getSystemService(Context.INPUT_METHOD_SERVICE);
keyboard.toggleSoftInput(InputMethodManager.SHOW_FORCED,0);

只要在manifest文件中添加android:windowSoftInputMode="stateHidden"…

我最近在一些简单的代码案例中有一些运气 在下面。我还没有完成所有的测试，但是....

EditText input = (EditText) findViewById(R.id.Input);
input.requestFocus();    
input.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN, 0f, 0f, 0));
input.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_UP, 0f, 0f, 0));

键盘很快就出现了。

只需在EditText视图中添加这一行:

android:isScrollContainer="true"

和TADA -键盘开始自动显示!

我也有类似的问题，发现了这个简单而奇怪的解决方法。

正如user3392439在这里已经提到的，键盘在焦点上的出现与XML文件中滚动组件的出现有某种奇怪的联系。

即使在同一XML中存在另一个包含上述行的EditText视图，也会使键盘出现，无论当前关注的是哪个EditText。

如果您的XML文件中至少有一个包含滚动组件的可见视图-键盘将自动显示在焦点上。

如果没有滚动-然后你需要点击EditText使键盘出现。

我做了这个帮助课。 只需要传递context和你想要聚焦的View show keyboard和hide keyboard。 我希望这能有所帮助。

public class FocusKeyboardHelper {

private View view;
private Context context;
private InputMethodManager imm;

public FocusKeyboardHelper(Context context, View view){
    this.view = view;
    this.context = context;
    imm = (InputMethodManager) context.getSystemService(context.INPUT_METHOD_SERVICE);
}

public void focusAndShowKeyboard(){

    view.requestFocus();
    imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);

}

public void hideKeyBoard(){
    imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}

}