我想根据是否显示虚拟键盘来改变布局。我已经搜索了API和各种博客,但似乎找不到任何有用的东西。
这可能吗?
谢谢!
我想根据是否显示虚拟键盘来改变布局。我已经搜索了API和各种博客,但似乎找不到任何有用的东西。
这可能吗?
谢谢!
当前回答
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);
}
}
其他回答
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。
Nebojsa的解决方案几乎对我有效。当我在一个多行EditText中单击时,它知道键盘被显示出来,但是当我开始在EditText中输入时,actualHeight和proposedHeight仍然是相同的,所以它不知道键盘仍然被显示出来。我做了一个轻微的修改,以存储最大高度,它工作得很好。下面是修改后的子类:
public class CheckinLayout extends RelativeLayout {
private int largestHeight;
public CheckinLayout(Context context, AttributeSet attributeSet) {
super(context, attributeSet);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.checkin, this);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
final int proposedheight = MeasureSpec.getSize(heightMeasureSpec);
largestHeight = Math.max(largestHeight, getHeight());
if (largestHeight > proposedheight)
// Keyboard is shown
else
// Keyboard is hidden
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
我所做的是创建一个简单的绑定来隐藏视图时,键盘是可见的。 解决方案基于当前AndroidX实现的WindowInsetsCompat,仍处于beta (AndroidX核心1.5)-源代码
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
}
@BindingAdapter("goneWhenKeyboardVisible")
fun View.goneWhenKeyboardVisible(enabled: Boolean) {
if (enabled) {
setOnApplyWindowInsetsListener { view, insets ->
visibility = if (isKeyboardVisible(insets)) GONE else VISIBLE
insets
}
} else {
setOnApplyWindowInsetsListener(null)
visibility = VISIBLE
}
}
用法:
<FrameLayout
android:id="@+id/bottom_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:goneWhenKeyboardVisible="@{true}"
/>
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
}
}
}
不确定是否有人发布这篇文章。发现这个解决方案简单易用!SoftKeyboard类在gi.github.com上。但是当键盘弹出/隐藏事件回调时,我们需要一个处理程序来正确地在UI上做事情:
/*
Somewhere else in your code
*/
RelativeLayout mainLayout = findViewById(R.layout.main_layout); // You must use your root layout
InputMethodManager im = (InputMethodManager) getSystemService(Service.INPUT_METHOD_SERVICE);
/*
Instantiate and pass a callback
*/
SoftKeyboard softKeyboard;
softKeyboard = new SoftKeyboard(mainLayout, im);
softKeyboard.setSoftKeyboardCallback(new SoftKeyboard.SoftKeyboardChanged()
{
@Override
public void onSoftKeyboardHide()
{
// Code here
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
// Code here will run in UI thread
...
}
});
}
@Override
public void onSoftKeyboardShow()
{
// Code here
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
// Code here will run in UI thread
...
}
});
}
});