彻底解决软键盘遮挡DialogFragment

问题描述

点击edittext，弹出软键盘，dialog略微上移，edittext和下面的按钮还是被遮挡，上移的部分被切割

解决方案

设置dialog的inputMode，取消软键盘弹出自动上移
监听软键盘弹出事件，动态设置dialog的paddingBottom

override fun init() {
        dialog?.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING)
        globalListener = KeyboardUtils.registerSoftInputChangedListener(activity, object : KeyboardUtils.OnSoftInputChangedListener {
            override fun onSoftInputChanged(height: Int) {
                dialog?.window?.apply {
                    if (height > 10) {
                        decorView.setPadding(0, 0, 0, 400)
                    } else {
                        decorView.setPadding(0, 0, 0, 0)
                    }
                    attributes = attributes
                }
            }
        })
    }

override fun onDestroy() {
        super.onDestroy()
        if (globalListener != null) {
            KeyboardUtils.unregisterSoftInputChangedListener(activity, globalListener!!)
        }
    }

fun registerSoftInputChangedListener(activity: Activity,
                                         listener: OnSoftInputChangedListener?)
            : ViewTreeObserver.OnGlobalLayoutListener {
        val contentView = activity.findViewById<View>(android.R.id.content)
        sContentViewInvisibleHeightPre = getContentViewInvisibleHeight(activity)
        val globalListener = ViewTreeObserver.OnGlobalLayoutListener {
            if (listener != null) {
                val height = getContentViewInvisibleHeight(activity)
                if (sContentViewInvisibleHeightPre != height) {
                    listener.onSoftInputChanged(height)
                    sContentViewInvisibleHeightPre = height
                }
            }
        }
        contentView.viewTreeObserver.addOnGlobalLayoutListener(globalListener)
        return globalListener
    }

    fun unregisterSoftInputChangedListener(activity: Activity,
                                           listener: ViewTreeObserver.OnGlobalLayoutListener) {
        val contentView = activity.findViewById<View>(android.R.id.content)
        contentView.viewTreeObserver.removeOnGlobalLayoutListener(listener)
    }

private fun getContentViewInvisibleHeight(activity: Activity): Int {
        val contentView = activity.findViewById<View>(android.R.id.content)
        val outRect = Rect()
        contentView.getWindowVisibleDisplayFrame(outRect)
        return contentView.bottom - outRect.bottom
    }

总结

dialog销毁一定要移除global监听，否则回调里面拿到的window是上一次的