Android -- EditText输入法打开时，监听返回键

Posted 2022-06-02 匆忙拥挤repeat

import android.content.Context
import android.util.AttributeSet
import android.view.KeyEvent
import androidx.appcompat.widget.AppCompatEditText

/**
 * EditText输入法打开时，监听返回键
 */
class PrintTextEditTextView : AppCompatEditText 
    constructor(context: Context?) : super(context)
    constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
    constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr)

    override fun onKeyPreIme(keyCode: Int, event: KeyEvent): Boolean 
        if (keyCode == KeyEvent.KEYCODE_BACK && event.action == KeyEvent.ACTION_UP) 
            super.onKeyPreIme(keyCode, event)
            mOnKeyBoardHideListener?.invoke(keyCode, event)
            return false
        
        return super.onKeyPreIme(keyCode, event)
    

    /**
     * 键盘隐藏监听
     */
    private var mOnKeyBoardHideListener: ((Int, KeyEvent) -> Unit)? = null

    fun setOnKeyBoardHideListener(onKeyBoardHideListener: (Int, KeyEvent) -> Unit) 
        this.mOnKeyBoardHideListener = onKeyBoardHideListener