130 lines
3.9 KiB
Java
130 lines
3.9 KiB
Java
package me.sergiotarxz.openmg.x11;
|
|
|
|
import android.app.Activity;
|
|
import android.graphics.Rect;
|
|
import android.view.View;
|
|
import android.view.ViewGroup;
|
|
import android.view.ViewTreeObserver;
|
|
import android.content.Context;
|
|
import android.view.inputmethod.InputMethodManager;
|
|
import android.content.SharedPreferences;
|
|
import android.preference.PreferenceManager;
|
|
import java.util.HashMap;
|
|
|
|
/**
|
|
* Based on the following Stackoverflow answer:
|
|
* http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android
|
|
*/
|
|
@SuppressWarnings("WeakerAccess")
|
|
public class KeyboardUtils implements ViewTreeObserver.OnGlobalLayoutListener
|
|
{
|
|
private final static int MAGIC_NUMBER = 200;
|
|
|
|
private SoftKeyboardToggleListener mCallback;
|
|
private View mRootView;
|
|
private Boolean prevValue = null;
|
|
private float mScreenDensity;
|
|
private static HashMap<SoftKeyboardToggleListener, KeyboardUtils> sListenerMap = new HashMap<>();
|
|
|
|
public interface SoftKeyboardToggleListener
|
|
{
|
|
void onToggleSoftKeyboard(boolean isVisible);
|
|
}
|
|
|
|
|
|
@Override
|
|
public void onGlobalLayout()
|
|
{
|
|
Rect r = new Rect();
|
|
mRootView.getWindowVisibleDisplayFrame(r);
|
|
|
|
int heightDiff = mRootView.getRootView().getHeight() - (r.bottom - r.top);
|
|
float dp = heightDiff/ mScreenDensity;
|
|
boolean isVisible = dp > MAGIC_NUMBER;
|
|
|
|
if (mCallback != null && (prevValue == null || isVisible != prevValue)) {
|
|
prevValue = isVisible;
|
|
mCallback.onToggleSoftKeyboard(isVisible);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add a new keyboard listener
|
|
* @param act calling activity
|
|
* @param listener callback
|
|
*/
|
|
public static void addKeyboardToggleListener(Activity act, SoftKeyboardToggleListener listener)
|
|
{
|
|
removeKeyboardToggleListener(listener);
|
|
|
|
sListenerMap.put(listener, new KeyboardUtils(act, listener));
|
|
}
|
|
|
|
/**
|
|
* Remove a registered listener
|
|
* @param listener {@link SoftKeyboardToggleListener}
|
|
*/
|
|
public static void removeKeyboardToggleListener(SoftKeyboardToggleListener listener)
|
|
{
|
|
if(sListenerMap.containsKey(listener))
|
|
{
|
|
KeyboardUtils k = sListenerMap.get(listener);
|
|
k.removeListener();
|
|
|
|
sListenerMap.remove(listener);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove all registered keyboard listeners
|
|
*/
|
|
public static void removeAllKeyboardToggleListeners()
|
|
{
|
|
for(SoftKeyboardToggleListener l : sListenerMap.keySet())
|
|
sListenerMap.get(l).removeListener();
|
|
|
|
sListenerMap.clear();
|
|
}
|
|
|
|
/**
|
|
* Manually toggle soft keyboard visibility
|
|
* @param context calling context
|
|
*/
|
|
public static void toggleKeyboardVisibility(Context context)
|
|
{
|
|
InputMethodManager inputMethodManager = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
|
|
if(inputMethodManager != null)
|
|
inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
|
|
}
|
|
|
|
/**
|
|
* Force closes the soft keyboard
|
|
* @param activeView the view with the keyboard focus
|
|
*/
|
|
public void forceCloseKeyboard(View activeView)
|
|
{
|
|
InputMethodManager inputMethodManager = (InputMethodManager) activeView.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
|
|
if(inputMethodManager != null) {
|
|
inputMethodManager.hideSoftInputFromWindow(activeView.getWindowToken(), 0);
|
|
}
|
|
}
|
|
|
|
private void removeListener()
|
|
{
|
|
mCallback = null;
|
|
|
|
mRootView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
|
|
}
|
|
|
|
private KeyboardUtils(Activity act, SoftKeyboardToggleListener listener)
|
|
{
|
|
mCallback = listener;
|
|
|
|
mRootView = ((ViewGroup) act.findViewById(android.R.id.content)).getChildAt(0);
|
|
mRootView.getViewTreeObserver().addOnGlobalLayoutListener(this);
|
|
|
|
mScreenDensity = act.getResources().getDisplayMetrics().density;
|
|
}
|
|
|
|
}
|