问题
在手机上,点击输入框,会弹出输入法的键盘,这个时候如果UI没有做自适应处理,则会被输入法键盘窗口挡住,如下图微信是做了自适应的,在Unity中如何获取手机输入法键盘窗口的高度,从而对UI做自适应上移呢?
解决办法
Android
// 获取手机键盘高度
public static int GetKeyboardHeight()
{
using (var unityClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
{
var unityPlayer = unityClass.GetStatic<AndroidJavaObject>("currentActivity").Get<AndroidJavaObject>("mUnityPlayer");
var view = unityPlayer.Call<AndroidJavaObject>("getView");
var dialog = unityPlayer.Get<AndroidJavaObject>("b");
if (view == null || dialog == null)
return 0;
var decorHeight = 0;
if (true) //includeInput
{
var decorView = dialog.Call<AndroidJavaObject>("getWindow").Call<AndroidJavaObject>("getDecorView");
if (decorView != null)
decorHeight = decorView.Call<int>("getHeight");
}
using (var rect = new AndroidJavaObject("android.graphics.Rect"))
{
view.Call("getWindowVisibleDisplayFrame", rect);
return Display.main.systemHeight - rect.Call<int>("height") + decorHeight;
}
}
}
iOS
// 获取手机键盘高度
public static int GetKeyboardHeight()
{
return (int)TouchScreenKeyboard.area.height * Display.main.systemHeight / Screen.height;
}
调用
float k = gameObject.GetComponent<RectTransform>().sizeDelta.y;
float keyboardHeight = GetKeyboardHeight();
float keyboardHeightUi = keyboardHeight * k / Display.main.systemHeight;
m_Rt.anchoredPosition = Vector3.up * keyboardHeightUi;