我已经解决了单行文本视图回编码的问题。

package com.helpingdoc;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;

public class MainSearchLayout extends LinearLayout {
    int hieght = 0;
    public MainSearchLayout(Context context, AttributeSet attributeSet) {

        super(context, attributeSet);
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        inflater.inflate(R.layout.main, this);


    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        Log.d("Search Layout", "Handling Keyboard Window shown");
       if(getHeight()>hieght){
           hieght = getHeight();
       }
        final int proposedheight = MeasureSpec.getSize(heightMeasureSpec);
        final int actualHeight = getHeight();
        System.out.println("....hieght = "+ hieght);
        System.out.println("....actualhieght = "+ actualHeight);
        System.out.println("....proposedheight = "+ proposedheight);
        if (actualHeight > proposedheight){
            // Keyboard is shown


        } else if(actualHeight<proposedheight){
            // Keyboard is hidden

        }

        if(proposedheight == hieght){
             // Keyboard is hidden
        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}

隐藏|显示事件键盘可以通过简单的hack在OnGlobalLayoutListener监听:

 final View activityRootView = findViewById(R.id.top_root);
        activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
            public void onGlobalLayout() {
                int heightDiff = activityRootView.getRootView().getHeight() - activityRootView.getHeight();

                if (heightDiff > 100) {
                    // keyboard is up
                } else {
                    // keyboard is down
                }
            }
        });

这里activityRootView是Activity的根视图。

以上@Filipkowicz的答案在Android API < 30的情况下很好。由于Android API 30，我们应该使用setWindowInsetsAnimationCallback。所以下面的答案结合了这两种方法，以工作API 21 - 30。

private fun isKeyboardVisible(insets: WindowInsets): Boolean {
    val insetsCompat = WindowInsetsCompat.toWindowInsetsCompat(insets)
    val systemWindow = insetsCompat.systemWindowInsets
    val rootStable = insetsCompat.stableInsets
    if (systemWindow.bottom > rootStable.bottom) {
        // This handles the adjustResize case on < API 30, since
        // systemWindow.bottom is probably going to be the IME
        return true
    }
    return false
}

@JvmStatic
@BindingAdapter("goneWhenKeyboardVisible")
fun View.goneWhenKeyboardVisible() {
    if (isRPlus()) {
        setWindowInsetsAnimationCallback(object :
            WindowInsetsAnimation.Callback(DISPATCH_MODE_STOP) {
            override fun onProgress(
                insets: WindowInsets,
                runningAnimations: MutableList<WindowInsetsAnimation>
            ): WindowInsets {
                return insets
            }

            override fun onStart(
                animation: WindowInsetsAnimation,
                bounds: WindowInsetsAnimation.Bounds
            ): WindowInsetsAnimation.Bounds {
                if (isVisible)
                    isVisible = !rootWindowInsets.isVisible(WindowInsets.Type.ime())
                return super.onStart(animation, bounds)
            }

            override fun onEnd(animation: WindowInsetsAnimation) {
                super.onEnd(animation)
                if (!isVisible)
                    isVisible = !rootWindowInsets.isVisible(WindowInsets.Type.ime())
            }
        })
    } else {
        setOnApplyWindowInsetsListener { _, insets ->
            isVisible = !isKeyboardVisible(insets)
            insets
        }
    }
}

这可能不是最有效的解决方案。但这对我每次都有效……我调用这个函数每当我需要听软键盘。

boolean isOpened = false;

public void setListenerToRootView() {
    final View activityRootView = getWindow().getDecorView().findViewById(android.R.id.content);
    activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {

            int heightDiff = activityRootView.getRootView().getHeight() - activityRootView.getHeight();
            if (heightDiff > 100) { // 99% of the time the height diff will be due to a keyboard.
                Toast.makeText(getApplicationContext(), "Gotcha!!! softKeyboardup", 0).show();

                if (isOpened == false) {
                    //Do two things, make the view top visible and the editText smaller
                }
                isOpened = true;
            } else if (isOpened == true) {
                Toast.makeText(getApplicationContext(), "softkeyborad Down!!!", 0).show();
                isOpened = false;
            }
        }
    });
}

注意: 如果用户使用浮动键盘，这种方法将导致问题。

我已经解决了单行文本视图回编码的问题。

package com.helpingdoc;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;

public class MainSearchLayout extends LinearLayout {
    int hieght = 0;
    public MainSearchLayout(Context context, AttributeSet attributeSet) {

        super(context, attributeSet);
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        inflater.inflate(R.layout.main, this);


    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        Log.d("Search Layout", "Handling Keyboard Window shown");
       if(getHeight()>hieght){
           hieght = getHeight();
       }
        final int proposedheight = MeasureSpec.getSize(heightMeasureSpec);
        final int actualHeight = getHeight();
        System.out.println("....hieght = "+ hieght);
        System.out.println("....actualhieght = "+ actualHeight);
        System.out.println("....proposedheight = "+ proposedheight);
        if (actualHeight > proposedheight){
            // Keyboard is shown


        } else if(actualHeight<proposedheight){
            // Keyboard is hidden

        }

        if(proposedheight == hieght){
             // Keyboard is hidden
        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}

我有个方法来做这件事。虽然似乎没有一种方法来检测软键盘何时显示或隐藏，但实际上，您可以通过在正在侦听的EditText上设置OnFocusChangeListener来检测它何时即将显示或隐藏。

EditText et = (EditText) findViewById(R.id.et);
et.setOnFocusChangeListener(new View.OnFocusChangeListener()
    {
        @Override
        public void onFocusChange(View view, boolean hasFocus)
        {
            //hasFocus tells us whether soft keyboard is about to show
        }
    });

注意:要注意的一件事是，当EditText获得或失去焦点时，这个回调将立即触发。这实际上会在软键盘显示或隐藏之前触发。我发现在键盘显示或隐藏之后做一些事情的最好方法是使用Handler并延迟一些事情~ 400ms，如下所示:

EditText et = (EditText) findViewById(R.id.et);
et.setOnFocusChangeListener(new View.OnFocusChangeListener()
    {
        @Override
        public void onFocusChange(View view, boolean hasFocus)
        {
            new Handler().postDelayed(new Runnable()
                {
                    @Override
                    public void run()
                    {
                        //do work here
                    }
                }, 400);
        }
    });