我有一个Activity，其中有5个EditTexts。当用户点击第一个EditText时，软键盘会打开以在其中输入一些值。当软键盘打开时，我想设置一些其他View对Gone的可见性，当用户点击第一个EditText时，以及当软键盘从后面按钮按下时相同的EditText关闭时。然后我想将其他View的可见性设置为可见。
是否有任何聆听者或回调或任何黑客攻击何时从Android上的第一个EditText点击打开软键盘？
这仅在您的活动的android:windowSoftInputMode在清单中设置为adjustResize时有效。您可以使用布局侦听器来查看键盘是否调整了活动的根布局。
我为我的活动使用类似下面的基类：
public class BaseActivity extends Activity {
private ViewTreeObserver.OnGlobalLayoutListener keyboardLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
int heightDiff = rootLayout.getRootView().getHeight() - rootLayout.getHeight();
int contentViewTop = getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(BaseActivity.this);
if(heightDiff <= contentViewTop){
onHideKeyboard();
Intent intent = new Intent("KeyboardWillHide");
broadcastManager.sendBroadcast(intent);
} else {
int keyboardHeight = heightDiff - contentViewTop;
onShowKeyboard(keyboardHeight);
Intent intent = new Intent("KeyboardWillShow");
intent.putExtra("KeyboardHeight", keyboardHeight);
broadcastManager.sendBroadcast(intent);
}
}
};
private boolean keyboardListenersAttached = false;
private ViewGroup rootLayout;
protected void onShowKeyboard(int keyboardHeight) {}
protected void onHideKeyboard() {}
protected void attachKeyboardListeners() {
if (keyboardListenersAttached) {
return;
}
rootLayout = (ViewGroup) findViewById(R.id.rootLayout);
rootLayout.getViewTreeObserver().addOnGlobalLayoutListener(keyboardLayoutListener);
keyboardListenersAttached = true;
}
@Override
protected void onDestroy() {
super.onDestroy();
if (keyboardListenersAttached) {
rootLayout.getViewTreeObserver().removeGlobalOnLayoutListener(keyboardLayoutListener);
}
}
}
以下示例活动使用此选项在键盘显示时隐藏视图，并在隐藏键盘时再次显示键盘。
xml布局：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rootLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ScrollView
android:id="@+id/scrollView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<!-- omitted for brevity -->
</ScrollView>
<LinearLayout android:id="@+id/bottomContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<!-- omitted for brevity -->
</LinearLayout>
</LinearLayout>
活动：
public class TestActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test_activity);
attachKeyboardListeners();
}
@Override
protected void onShowKeyboard(int keyboardHeight) {
// do things when keyboard is shown
bottomContainer.setVisibility(View.GONE);
}
@Override
protected void onHideKeyboard() {
// do things when keyboard is hidden
bottomContainer.setVisibility(View.VISIBLE);
}
}
软键盘监听器的不同实现，它不依赖于窗口调整，因此在多窗口世界中也能很好地工作。它当然有它自己的怪癖，但是它们与多窗口和窗口调整大小检测的完全破碎相比毫无意义。
希望改进的想法！
如果可以，尝试扩展EditText并覆盖'onKeyPreIme'方法。
@Override
public void setOnEditorActionListener(final OnEditorActionListener listener) {
mEditorListener = listener; //keep it for later usage
super.setOnEditorActionListener(listener);
}
@Override
public boolean onKeyPreIme(final int keyCode, final KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
if (mEditorListener != null) {
//you can define and use custom listener,
//OR define custom R.id.<imeId>
//OR check event.keyCode in listener impl
//* I used editor action because of ButterKnife @
mEditorListener.onEditorAction(this, android.R.id.closeButton, event);
}
}
return super.onKeyPreIme(keyCode, event);
}
你怎么能扩展它：
我认为，如前所述，重新计算屏幕高度不是100％成功。要明确的是，“onKeyPreIme”的覆盖不会在“隐藏软键盘编程”方法中调用，但如果你在任何地方都这样做，你应该在那里做'onKeyboardHidden'逻辑，而不是创建一个全面的解决方案。
另一种方法是检查用户何时停止输入...
当TextEdit处于焦点（用户正在/正在键入）时，您可以隐藏视图（焦点侦听器）
并使用Handler + Runnable和文本更改侦听器来关闭键盘（无论其可见性如何）并在一段延迟后显示视图。
需要注意的主要问题是您使用的延迟，这取决于这些TextEdits的内容。
Handler timeoutHandler = new Handler();
Runnable typingRunnable = new Runnable() {
public void run() {
// current TextEdit
View view = getCurrentFocus();
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
// reset focus
view.clearFocus();
// close keyboard (whether its open or not)
imm.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.RESULT_UNCHANGED_SHOWN);
// SET VIEWS VISIBLE
}
};
editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
// SET VIEWS GONE
// reset handler
timeoutHandler.removeCallbacks(typingRunnable);
timeoutHandler.postDelayed(typingRunnable, TYPING_TIMEOUT);
}
}
});
editText.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Reset Handler...
timeoutHandler.removeCallbacks(typingRunnable);
}
@Override
public void afterTextChanged(Editable s) {
// Reset Handler Cont.
if (editText.getText().toString().trim().length() > 0) {
timeoutHandler.postDelayed(typingRunnable, TYPING_TIMEOUT);
}
}
});
public class MainActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mainactivity);
attachKeyboardListeners();
....
yourEditText1.setOnFocusChangeListener(new OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
yourEditText2.setVisibility(View.GONE);
yourEditText3.setVisibility(View.GONE);
yourEditText4.setVisibility(View.GONE);
yourEditText5.setVisibility(View.GONE);
} else {
yourEditText2.setVisibility(View.VISIBLE);
yourEditText3.setVisibility(View.VISIBLE);
yourEditText4.setVisibility(View.VISIBLE);
yourEditText5.setVisibility(VISIBLE);
}
}
});
}
}
不幸的是，我没有足够的声誉来评论Jaap van Hengstum的回答。但我读了一些人的评论，问题是contentViewTop总是0和onShowKeyboard(...)总是被称为。
我有同样的问题，并找出了我遇到的问题。我使用AppCompatActivity而不是'正常'Activity。在这种情况下，Window.ID_ANDROID_CONTENT指的是ContentFrameLayout，而不是指具有正确顶值的FrameLayout。在我的情况下，使用'正常'Activity是好的，如果你必须使用另一个活动类型（我刚刚测试了AppCompatActivity，也许它也是其他acitivy类型的问题，如FragmentActivity），你必须访问FrameLayout，这是ContentFrameLayout的祖先。
当键盘显示
rootLayout.getHeight() < rootLayout.getRootView().getHeight() - getStatusBarHeight()
是真的，否则隐藏
private boolean isKeyboardShown = false;
private int prevContentHeight = 0;
private ViewGroup contentLayout;
private ViewTreeObserver.OnGlobalLayoutListener keyboardLayoutListener =
new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
int contentHeight = contentLayout.getHeight();
int rootViewHeight = contentLayout.getRootView().getHeight();
if (contentHeight > 0) {
if (!isKeyboardShown) {
if (contentHeight < prevContentHeight) {
isKeyboardShown = true;
onShowKeyboard(rootViewHeight - contentHeight);
}
} else {
if (contentHeight > prevContentHeight) {
isKeyboardShown = false;
onHideKeyboard();
}
}
prevContentHeight = contentHeight;
}
}
};
我已经修改了Jaap接受的答案了。但在我的情况下，有一些假设，如android:windowSoftInputMode=adjustResize和键盘在应用程序启动时不会出现在开头。而且，我认为屏幕方面与父母的身高相匹配。
contentHeight > 0此检查让我知道关闭屏幕是否被隐藏或显示是否应用键盘事件监听此特定屏幕。我还在我的主要活动的attachKeyboardListeners(<your layout view here>)方法中传递了onCreate()中关于屏幕的布局视图。每当相关屏幕的高度发生变化时，我将其保存到prevContentHeight变量，以便稍后检查键盘是显示还是隐藏。
对我来说，到目前为止它已经很好地工作了。我希望它也适用于其他人。
“Jaap van Hengstum”的答案对我有用，但没有必要像他刚才说的那样设置“android：windowSoftInputMode”！
我把它缩小了（它现在只是检测我想要的东西，实际上是显示和隐藏键盘的事件）：
private ViewTreeObserver.OnGlobalLayoutListener keyboardLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
int heightDiff = rootLayout.getRootView().getHeight() - rootLayout.getHeight();
int contentViewTop = getWindow().findViewById(Window.ID_ANDROID_CONTENT).getTop();
if(heightDiff <= contentViewTop){
onHideKeyboard();
} else {
onShowKeyboard();
}
}
};
private boolean keyboardListenersAttached = false;
private ViewGroup rootLayout;
protected void onShowKeyboard() {}
protected void onHideKeyboard() {}
protected void attachKeyboardListeners() {
if (keyboardListenersAttached) {
return;
}
rootLayout = (ViewGroup) findViewById(R.id.CommentsActivity);
rootLayout.getViewTreeObserver().addOnGlobalLayoutListener(keyboardLayoutListener);
keyboardListenersAttached = true;
}
@Override
protected void onDestroy() {
super.onDestroy();
if (keyboardListenersAttached) {
rootLayout.getViewTreeObserver().removeGlobalOnLayoutListener(keyboardLayoutListener);
}
}
并且不要忘记添加这个
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_comments);
attachKeyboardListeners();}
这段代码非常好用
将此类用于根视图：
public class KeyboardConstraintLayout extends ConstraintLayout {
private KeyboardListener keyboardListener;
private EditText targetEditText;
private int minKeyboardHeight;
private boolean isShow;
public KeyboardConstraintLayout(Context context) {
super(context);
minKeyboardHeight = getResources().getDimensionPixelSize(R.dimen.keyboard_min_height); //128dp
}
public KeyboardConstraintLayout(Context context, AttributeSet attrs) {
super(context, attrs);
minKeyboardHeight = getResources().getDimensionPixelSize(R.dimen.keyboard_min_height); // 128dp
}
public KeyboardConstraintLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
minKeyboardHeight = getResources().getDimensionPixelSize(R.dimen.keyboard_min_height); // 128dp
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (!isInEditMode()) {
Activity activity = (Activity) getContext();
@SuppressLint("DrawAllocation")
Rect rect = new Rect();
getWindowVisibleDisplayFrame(rect);
int statusBarHeight = rect.top;
int keyboardHeight = activity.getWindowManager().getDefaultDisplay().getHeight() - (rect.bottom - rect.top) - statusBarHeight;
if (keyboardListener != null && targetEditText != null && targetEditText.isFocused()) {
if (keyboardHeight > minKeyboardHeight) {
if (!isShow) {
isShow = true;
keyboardListener.onKeyboardVisibility(true);
}
}else {
if (isShow) {
isShow = false;
keyboardListener.onKeyboardVisibility(false);
}
}
}
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
public boolean isShowKeyboard() {
return isShow;
}
public void setKeyboardListener(EditText targetEditText, KeyboardListener keyboardListener) {
this.targetEditText = targetEditText;
this.keyboardListener = keyboardListener;
}
public interface KeyboardListener {
void onKeyboardVisibility (boolean isVisible);
}
}
并在activity或fragment中设置键盘侦听器：
rootLayout.setKeyboardListener(targetEditText, new KeyboardConstraintLayout.KeyboardListener() {
@Override
public void onKeyboardVisibility(boolean isVisible) {
}
});
这将无需更改您的活动qazxsw poi即可使用
第1步：扩展EditText类并覆盖这两个：
android:windowSoftInputMode第2步：在您的活动中创建这两个：
@Override
public void setOnEditorActionListener(final OnEditorActionListener listener) {
mEditorListener = listener;
super.setOnEditorActionListener(listener);
}
@Override
public boolean onKeyPreIme(final int keyCode, final KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
if (mEditorListener != null) {
mEditorListener.onEditorAction(this, android.R.id.closeButton, event);
}
}
return super.onKeyPreIme(keyCode, event);
}
***记住为了使private void initKeyboard() {
final AppEditText editText = findViewById(R.id.some_id);
editText.setOnFocusChangeListener(new OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
setKeyboard(hasFocus);
}
});
editText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (event == null || event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
editText.clearFocus();
}
return false;
}
});
}
public void setKeyboard(boolean isShowing) {
// do something
}
工作，你必须让父级或父级的第一个孩子可以聚焦。
clearFocus一块蛋糕与令人敬畏的KeyboardVisibilityEvent library
KeyboardVisibilityEvent.setEventListener(
getActivity(),
new KeyboardVisibilityEventListener() {
@Override
public void onVisibilityChanged(boolean isOpen) {
// write your code
}
});
Yasuhiro SHIMIZU的积分
这不符合要求......
...已经看到许多使用尺寸计算来检查......
我想确定它是否开放和 setFocusableInTouchMode(true);
setFocusable(true);
I found
所以这真的没有回答这个问题，因为它没有解决开放或关闭更像是打开或关闭所以它是相关的代码，可以帮助其他人在各种场景...
在一项活动中
isAcceptingText()在片段中
if (((InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE)).isAcceptingText()) {
Log.d(TAG,"Software Keyboard was shown");
} else {
Log.d(TAG,"Software Keyboard was not shown");
}
以下代码对我有用，
if (((InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE)).isAcceptingText()) {
Log.d(TAG,"Software Keyboard was shown");
} else {
Log.d(TAG,"Software Keyboard was not shown");
}
正如维克拉姆在评论中指出的那样，检测软键盘是否显示或已经消失只能通过一些丑陋的黑客攻击。
也许在edittext上设置焦点监听器就足够了：
yourEditText.setOnFocusChangeListener(new OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
//got focus
} else {
//lost focus
}
}
});
对于活动：
final View activityRootView = findViewById(R.id.activityRoot);
activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect r = new Rect();
activityRootView.getWindowVisibleDisplayFrame(r);
int heightDiff = view.getRootView().getHeight() - (r.bottom - r.top);
if (heightDiff > 100) {
//enter your code here
}else{
//enter code for hid
}
}
});
片段：
view = inflater.inflate(R.layout.live_chat_fragment, null);
view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
Rect r = new Rect();
//r will be populated with the coordinates of your view that area still visible.
view.getWindowVisibleDisplayFrame(r);
int heightDiff = view.getRootView().getHeight() - (r.bottom - r.top);
if (heightDiff > 500) { // if more than 100 pixels, its probably a keyboard...
}
}
});
Jaap's答案不适用于AppCompatActivity。而是获取状态栏和导航栏等的高度，并与您的应用程序的窗口大小进行比较。
像这样：
private ViewTreeObserver.OnGlobalLayoutListener keyboardLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
// navigation bar height
int navigationBarHeight = 0;
int resourceId = getResources().getIdentifier("navigation_bar_height", "dimen", "android");
if (resourceId > 0) {
navigationBarHeight = getResources().getDimensionPixelSize(resourceId);
}
// status bar height
int statusBarHeight = 0;
resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
statusBarHeight = getResources().getDimensionPixelSize(resourceId);
}
// display window size for the app layout
Rect rect = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);
// screen height - (user app height + status + nav) ..... if non-zero, then there is a soft keyboard
int keyboardHeight = rootLayout.getRootView().getHeight() - (statusBarHeight + navigationBarHeight + rect.height());
if (keyboardHeight <= 0) {
onHideKeyboard();
} else {
onShowKeyboard(keyboardHeight);
}
}
};
你可以尝试一下：
private void initKeyBoardListener() {
// Минимальное значение клавиатуры.
// Threshold for minimal keyboard height.
final int MIN_KEYBOARD_HEIGHT_PX = 150;
// Окно верхнего уровня view.
// Top-level window decor view.
final View decorView = getWindow().getDecorView();
// Регистрируем глобальный слушатель. Register global layout listener.
decorView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
// Видимый прямоугольник внутри окна.
// Retrieve visible rectangle inside window.
private final Rect windowVisibleDisplayFrame = new Rect();
private int lastVisibleDecorViewHeight;
@Override
public void onGlobalLayout() {
decorView.getWindowVisibleDisplayFrame(windowVisibleDisplayFrame);
final int visibleDecorViewHeight = windowVisibleDisplayFrame.height();
if (lastVisibleDecorViewHeight != 0) {
if (lastVisibleDecorViewHeight > visibleDecorViewHeight + MIN_KEYBOARD_HEIGHT_PX) {
Log.d("Pasha", "SHOW");
} else if (lastVisibleDecorViewHeight + MIN_KEYBOARD_HEIGHT_PX < visibleDecorViewHeight) {
Log.d("Pasha", "HIDE");
}
}
// Сохраняем текущую высоту view до следующего вызова.
// Save current decor view height for the next call.
lastVisibleDecorViewHeight = visibleDecorViewHeight;
}
});
}
您可以使用我的Rx扩展功能（Kotlin）。
/**
* @return [Observable] to subscribe of keyboard visibility changes.
*/
fun AppCompatActivity.keyboardVisibilityChanges(): Observable<Boolean> {
// flag indicates whether keyboard is open
var isKeyboardOpen = false
val notifier: BehaviorSubject<Boolean> = BehaviorSubject.create()
// approximate keyboard height
val approximateKeyboardHeight = dip(100)
// device screen height
val screenHeight: Int = getScreenHeight()
val visibleDisplayFrame = Rect()
val viewTreeObserver = window.decorView.viewTreeObserver
val onDrawListener = ViewTreeObserver.OnDrawListener {
window.decorView.getWindowVisibleDisplayFrame(visibleDisplayFrame)
val keyboardHeight = screenHeight - (visibleDisplayFrame.bottom - visibleDisplayFrame.top)
val keyboardOpen = keyboardHeight >= approximateKeyboardHeight
val hasChanged = isKeyboardOpen xor keyboardOpen
if (hasChanged) {
isKeyboardOpen = keyboardOpen
notifier.onNext(keyboardOpen)
}
}
val lifeCycleObserver = object : GenericLifecycleObserver {
override fun onStateChanged(source: LifecycleOwner, event: Lifecycle.Event?) {
if (source.lifecycle.currentState == Lifecycle.State.DESTROYED) {
viewTreeObserver.removeOnDrawListener(onDrawListener)
source.lifecycle.removeObserver(this)
notifier.onComplete()
}
}
}
viewTreeObserver.addOnDrawListener(onDrawListener)
lifecycle.addObserver(lifeCycleObserver)
return notifier
.doOnDispose {
viewTreeObserver.removeOnDrawListener(onDrawListener)
lifecycle.removeObserver(lifeCycleObserver)
}
.onTerminateDetach()
.hide()
}
例：
(context as AppCompatActivity)
.keyboardVisibilityChanges()
.subscribeBy { isKeyboardOpen ->
// your logic
}
使用这个班，
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
public class SoftKeyboard implements View.OnFocusChangeListener
{
private static final int CLEAR_FOCUS = 0;
private ViewGroup layout;
private int layoutBottom;
private InputMethodManager im;
private int[] coords;
private boolean isKeyboardShow;
private SoftKeyboardChangesThread softKeyboardThread;
private List<EditText> editTextList;
private View tempView; // reference to a focused EditText
public SoftKeyboard(ViewGroup layout, InputMethodManager im)
{
this.layout = layout;
keyboardHideByDefault();
initEditTexts(layout);
this.im = im;
this.coords = new int[2];
this.isKeyboardShow = false;
this.softKeyboardThread = new SoftKeyboardChangesThread();
this.softKeyboardThread.start();
}
public void openSoftKeyboard()
{
if(!isKeyboardShow)
{
layoutBottom = getLayoutCoordinates();
im.toggleSoftInput(0, InputMethodManager.SHOW_IMPLICIT);
softKeyboardThread.keyboardOpened();
isKeyboardShow = true;
}
}
public void closeSoftKeyboard()
{
if(isKeyboardShow)
{
im.toggleSoftInput(InputMethodManager.HIDE_IMPLICIT_ONLY, 0);
isKeyboardShow = false;
}
}
public void setSoftKeyboardCallback(SoftKeyboardChanged mCallback)
{
softKeyboardThread.setCallback(mCallback);
}
public void unRegisterSoftKeyboardCallback()
{
softKeyboardThread.stopThread();
}
public interface SoftKeyboardChanged
{
public void onSoftKeyboardHide();
public void onSoftKeyboardShow();
}
private int getLayoutCoordinates()
{
layout.getLocationOnScreen(coords);
return coords[1] + layout.getHeight();
}
private void keyboardHideByDefault()
{
layout.setFocusable(true);
layout.setFocusableInTouchMode(true);
}
/*
* InitEditTexts now handles EditTexts in nested views
* Thanks to Francesco Verheye ([email protected])
*/
private void initEditTexts(ViewGroup viewgroup)
{
if(editTextList == null)
editTextList = new ArrayList<EditText>();
int childCount = viewgroup.getChildCount();
for(int i=0; i<= childCount-1;i++)
{
View v = viewgroup.getChildAt(i);
if(v instanceof ViewGroup)
{
initEditTexts((ViewGroup) v);
}
if(v instanceof EditText)
{
EditText editText = (EditText) v;
editText.setOnFocusChangeListener(this);
editText.setCursorVisible(true);
editTextList.add(editText);
}
}
}
/*
* OnFocusChange does update tempView correctly now when keyboard is still shown
* Thanks to Israel Dominguez ([email protected])
*/
@Override
public void onFocusChange(View v, boolean hasFocus)
{
if(hasFocus)
{
tempView = v;
if(!isKeyboardShow)
{
layoutBottom = getLayoutCoordinates();
softKeyboardThread.keyboardOpened();
isKeyboardShow = true;
}
}
}
// This handler will clear focus of selected EditText
private final Handler mHandler = new Handler()
{
@Override
public void handleMessage(Message m)
{
switch(m.what)
{
case CLEAR_FOCUS:
if(tempView != null)
{
tempView.clearFocus();
tempView = null;
}
break;
}
}
};
private class SoftKeyboardChangesThread extends Thread
{
private AtomicBoolean started;
private SoftKeyboardChanged mCallback;
public SoftKeyboardChangesThread()
{
started = new AtomicBoolean(true);
}
public void setCallback(SoftKeyboardChanged mCallback)
{
this.mCallback = mCallback;
}
@Override
public void run()
{
while(started.get())
{
// Wait until keyboard is requested to open
synchronized(this)
{
try
{
wait();
} catch (InterruptedException e)
{
e.printStackTrace();
}
}
int currentBottomLocation = getLayoutCoordinates();
// There is some lag between open soft-keyboard function and when it really appears.
while(currentBottomLocation == layoutBottom && started.get())
{
currentBottomLocation = getLayoutCoordinates();
}
if(started.get())
mCallback.onSoftKeyboardShow();
// When keyboard is opened from EditText, initial bottom location is greater than layoutBottom
// and at some moment equals layoutBottom.
// That broke the previous logic, so I added this new loop to handle this.
while(currentBottomLocation >= layoutBottom && started.get())
{
currentBottomLocation = getLayoutCoordinates();
}
// Now Keyboard is shown, keep checking layout dimensions until keyboard is gone
while(currentBottomLocation != layoutBottom && started.get())
{
synchronized(this)
{
try
{
wait(500);
} catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
currentBottomLocation = getLayoutCoordinates();
}
if(started.get())
mCallback.onSoftKeyboardHide();
// if keyboard has been opened clicking and EditText.
if(isKeyboardShow && started.get())
isKeyboardShow = false;
// if an EditText is focused, remove its focus (on UI thread)
if(started.get())
mHandler.obtainMessage(CLEAR_FOCUS).sendToTarget();
}
}
public void keyboardOpened()
{
synchronized(this)
{
notify();
}
}
public void stopThread()
{
synchronized(this)
{
started.set(false);
notify();
}
}
}
}
在Android Manifest，android:windowSoftInputMode="adjustResize"是必要的。
/*
Somewhere else in your code
*/
RelativeLayout mainLayout = findViewById(R.layout.main_layout); // You must use the layout root
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
}
@Override
public void onSoftKeyboardShow() {
// Code here
}
});
/*
Open or close the soft keyboard easily
*/
softKeyboard.openSoftKeyboard();
softKeyboard.closeSoftKeyboard();
/* Prevent memory leaks:*/
@Override
public void onDestroy() {
super.onDestroy();
softKeyboard.unRegisterSoftKeyboardCallback();
}
P.S - 完全取自here。
对于adjustResize和FragmentActivity的情况，接受来自@Jaap的解决方案对我不起作用。
这是我的解决方案：
private ViewTreeObserver.OnGlobalLayoutListener keyboardLayoutListener = new ViewTreeObserver.OnGlobalLayoutListener() {
private int contentDiff;
private int rootHeight;
@Override
public void onGlobalLayout() {
View contentView = getWindow().findViewById(Window.ID_ANDROID_CONTENT);
if (rootHeight != mDrawerLayout.getRootView().getHeight()) {
rootHeight = mDrawerLayout.getRootView().getHeight();
contentDiff = rootHeight - contentView.getHeight();
return;
}
int newContentDiff = rootHeight - contentView.getHeight();
if (contentDiff != newContentDiff) {
if (contentDiff < newContentDiff) {
onShowKeyboard(newContentDiff - contentDiff);
} else {
onHideKeyboard();
}
contentDiff = newContentDiff;
}
}
};