Java AccessibilityEvent.setEnabled方法代码示例

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
    boolean populated = false;
    if (event.getEventType() == 8) {
        event.setEventType(4);
    }
    View selectedView = getSelectedView();
    if (selectedView != null) {
        populated = selectedView.dispatchPopulateAccessibilityEvent(event);
    }
    if (!populated) {
        if (selectedView != null) {
            event.setEnabled(selectedView.isEnabled());
        }
        event.setItemCount(getCount());
        event.setCurrentItemIndex(getSelectedItemPosition());
    }
    return populated;
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
/**
 * Sends the specified text to the {@link AccessibilityManager} to be
 * spoken.
 *
 * @param view The source view.
 * @param text The text to speak.
 */
public void announceForAccessibility(final View view, final CharSequence text) {
    if (!mAccessibilityManager.isEnabled()) {
        Log.e(TAG, "Attempted to speak when accessibility was disabled!");
        return;
    }

    // The following is a hack to avoid using the heavy-weight TextToSpeech
    // class. Instead, we're just forcing a fake AccessibilityEvent into
    // the screen reader to make it speak.
    final AccessibilityEvent event = AccessibilityEvent.obtain();

    event.setPackageName(PACKAGE);
    event.setClassName(CLASS);
    event.setEventTime(SystemClock.uptimeMillis());
    event.setEnabled(true);
    event.getText().add(text);

    // Platforms starting at SDK version 16 (Build.VERSION_CODES.JELLY_BEAN) should use
    // announce events.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        event.setEventType(AccessibilityEventCompat.TYPE_ANNOUNCEMENT);
    } else {
        event.setEventType(AccessibilityEvent.TYPE_VIEW_FOCUSED);
    }

    final ViewParent viewParent = view.getParent();
    if ((viewParent == null) || !(viewParent instanceof ViewGroup)) {
        Log.e(TAG, "Failed to obtain ViewParent in announceForAccessibility");
        return;
    }

    viewParent.requestSendAccessibilityEvent(view, event);
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
    super.onInitializeAccessibilityEvent(event);
    event.setScrollable(isScrollableForAccessibility());
    View selectedView = getSelectedView();
    if (selectedView != null) {
        event.setEnabled(selectedView.isEnabled());
    }
    event.setCurrentItemIndex(getSelectedItemPosition());
    event.setFromIndex(getFirstVisiblePosition());
    event.setToIndex(getLastVisiblePosition());
    event.setItemCount(getCount());
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
        String text) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
@TargetApi(14)
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
    super.onInitializeAccessibilityEvent(event);
    event.setClassName(AdapterView.class.getName());
    event.setScrollable(isScrollableForAccessibility());
    View selectedView = getSelectedView();
    if (selectedView != null) {
        event.setEnabled(selectedView.isEnabled());
    }
    event.setCurrentItemIndex(getSelectedItemPosition());
    event.setFromIndex(getFirstVisiblePosition());
    event.setToIndex(getLastVisiblePosition());
    event.setItemCount(getCount());
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
private AccessibilityEvent createEventForChild(int virtualViewId, int eventType) {
    AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setEnabled(true);
    event.setClassName(DEFAULT_CLASS_NAME);
    onPopulateEventForVirtualView(virtualViewId, event);
    if (event.getText().isEmpty() && event.getContentDescription() == null) {
        throw new RuntimeException("Callbacks must add text or a content description in populateEventForVirtualViewId()");
    }
    event.setPackageName(this.mView.getContext().getPackageName());
    AccessibilityEventCompat.asRecord(event).setSource(this.mView, virtualViewId);
    return event;
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
@TargetApi(14)
@Override
public void onInitializeAccessibilityEvent( AccessibilityEvent event ) {
	super.onInitializeAccessibilityEvent( event );
	event.setClassName( AdapterView.class.getName() );
	event.setScrollable( isScrollableForAccessibility() );
	View selectedView = getSelectedView();
	if ( selectedView != null ) {
		event.setEnabled( selectedView.isEnabled() );
	}
	event.setCurrentItemIndex( getSelectedItemPosition() );
	event.setFromIndex( getFirstVisiblePosition() );
	event.setToIndex( getLastVisiblePosition() );
	event.setItemCount( getCount() );
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
public void onInitializeAccessibilityEvent(AccessibilityEvent paramAccessibilityEvent) {
	super.onInitializeAccessibilityEvent(paramAccessibilityEvent);
	paramAccessibilityEvent.setScrollable(isScrollableForAccessibility());
	View localView = getSelectedView();
	if (localView != null)
		paramAccessibilityEvent.setEnabled(localView.isEnabled());
	paramAccessibilityEvent.setCurrentItemIndex(getSelectedItemPosition());
	paramAccessibilityEvent.setFromIndex(getFirstVisiblePosition());
	paramAccessibilityEvent.setToIndex(getLastVisiblePosition());
	paramAccessibilityEvent.setItemCount(getCount());
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
/**
 * Creates and populates an {@link AccessibilityEvent} for the specified key
 * and event type.
 *
 * @param key A key on the host keyboard view.
 * @param eventType The event type to create.
 * @return A populated {@link AccessibilityEvent} for the key.
 * @see AccessibilityEvent
 */
public AccessibilityEvent createAccessibilityEvent(final Key key, final int eventType) {
    final int virtualViewId = getVirtualViewIdOf(key);
    final String keyDescription = getKeyDescription(key);
    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setPackageName(mKeyboardView.getContext().getPackageName());
    event.setClassName(key.getClass().getName());
    event.setContentDescription(keyDescription);
    event.setEnabled(true);
    final AccessibilityRecordCompat record = AccessibilityEventCompat.asRecord(event);
    record.setSource(mKeyboardView, virtualViewId);
    return event;
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
                                                    String text) {
    //if (AccessibilityManager.getInstance(mContext).isEnabled()) {
    if (accessibilityManager != null && accessibilityManager.isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        AccessibilityRecordCompat.setSource(event, NumberPicker.this, virtualViewId);
        //event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

import android.view.accessibility.AccessibilityEvent; //导入方法依赖的package包/类
@Override
public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
	boolean populated = false;
	// This is an exceptional case which occurs when a window gets the
	// focus and sends a focus event via its focused child to announce
	// current focus/selection. AdapterView fires selection but not focus
	// events so we change the event type here.
	if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_FOCUSED) {
		event.setEventType(AccessibilityEvent.TYPE_VIEW_SELECTED);
	}
       
	// we send selection events only from AdapterView to avoid
	// generation of such event for each child
	View selectedView = getSelectedView();
	if (selectedView != null) {
		populated = selectedView.dispatchPopulateAccessibilityEvent(event);
	}
       
	if (!populated) {
		if (selectedView != null) {
			event.setEnabled(selectedView.isEnabled());
		}
		event.setItemCount(getCount());
		event.setCurrentItemIndex(getSelectedItemPosition());
	}
       
	return populated;
}