Example usage for android.support.v4.view.accessibility AccessibilityManagerCompat addAccessibilityStateChangeListener

Introduction

In this page you can find the example usage for android.support.v4.view.accessibility AccessibilityManagerCompat addAccessibilityStateChangeListener.

Prototype

public static boolean addAccessibilityStateChangeListener(AccessibilityManager manager,
        AccessibilityStateChangeListenerCompat listener) 

Source Link

Document

Registers an AccessibilityManager.AccessibilityStateChangeListener for changes in the global accessibility state of the system.

Usage

From source file:com.example.android.supportv4.accessibility.AccessibilityManagerSupportActivity.java

/**
 * Registers an AccessibilityStateChangeListener that show a Toast
 * when the global accessibility state on the device changes.
 *///from ww  w . j  a va2s.com
private void registerAccessibilityStateChangeListener() {
    // The AccessibilityStateChange listener APIs were added in ICS. Therefore to be
    // backwards compatible we use the APIs in the support library. Note that if the
    // platform API version is lower and the called API is not available no listener
    // is added and you will not receive a call of onAccessibilityStateChanged.
    AccessibilityManagerCompat.addAccessibilityStateChangeListener(mAccessibilityManager,
            new AccessibilityStateChangeListenerCompat() {
                @Override
                public void onAccessibilityStateChanged(boolean enabled) {
                    Toast.makeText(AccessibilityManagerSupportActivity.this,
                            getString(R.string.accessibility_manager_accessibility_state, enabled),
                            Toast.LENGTH_SHORT).show();
                }
            });
}

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From source file:com.facebook.litho.LithoView.java

private void onAttach() {
    if (!mIsAttached) {
        mIsAttached = true;//from  ww  w.j  a  va  2 s .co m

        if (mComponentTree != null) {
            mComponentTree.attach();
        }

        refreshAccessibilityDelegatesIfNeeded(isAccessibilityEnabled(getContext()));

        AccessibilityManagerCompat.addAccessibilityStateChangeListener(mAccessibilityManager,
                mAccessibilityStateChangeListener);
    }
}

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From source file:ti.modules.titanium.app.AppModule.java

@Override
public void onHasListenersChanged(String event, boolean hasListeners) {
    super.onHasListenersChanged(event, hasListeners);

    // If listening for "accessibilitychanged", we need to register
    // our own listener with the system.
    if (!hasListeners && accessibilityStateChangeListener != null) {
        AccessibilityManagerCompat.removeAccessibilityStateChangeListener(
                TiApplication.getInstance().getAccessibilityManager(), accessibilityStateChangeListener);
        accessibilityStateChangeListener = null;
    } else if (hasListeners && accessibilityStateChangeListener == null) {
        accessibilityStateChangeListener = new AccessibilityStateChangeListenerCompat() {

            @Override// ww  w  .  j av a 2  s.  c  o  m
            public void onAccessibilityStateChanged(boolean enabled) {
                KrollDict data = new KrollDict();
                data.put(TiC.PROPERTY_ENABLED, enabled);
                fireEvent(EVENT_ACCESSIBILITY_CHANGED, data);
            }
        };

        AccessibilityManagerCompat.addAccessibilityStateChangeListener(
                TiApplication.getInstance().getAccessibilityManager(), accessibilityStateChangeListener);
    }
}

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