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
Nebojsa Tomcic的回答对我没有帮助。我有RelativeLayout与TextView和AutoCompleteTextView里面。我需要滚动TextView到底部时,键盘显示,当它被隐藏。为了实现这一点,我重写了onLayout方法,它对我来说很好。
public class ExtendedLayout extends RelativeLayout
{
public ExtendedLayout(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 onLayout(boolean changed, int l, int t, int r, int b)
{
super.onLayout(changed, l, t, r, b);
if (changed)
{
int scrollEnd = (textView.getLineCount() - textView.getHeight() /
textView.getLineHeight()) * textView.getLineHeight();
textView.scrollTo(0, scrollEnd);
}
}
}
其他回答
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}"
/>
桑德,我相信你是想展示被软键盘挡住的视野。试试这个http://android-developers.blogspot.com/2009/04/updating-applications-for-on-screen.html。
尽管本页上投票最多的解决方案说,有一个setWindowInsetsAnimationCallback的ViewCompat版本一直工作到Android 21。
所以现在,这个解决方案的方法一直适用于21。
来源:https://developer.android.com/reference/androidx/core/view/ViewCompat setWindowInsetsAnimationCallback (android.view.View androidx.core.view.WindowInsetsAnimationCompat.Callback)
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
...
}
});
}
});
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);
}
}