Example usage for android.support.v4.view ViewCompat setAccessibilityDelegate

List of usage examples for android.support.v4.view ViewCompat setAccessibilityDelegate

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Introduction

In this page you can find the example usage for android.support.v4.view ViewCompat setAccessibilityDelegate.

Prototype

public static void setAccessibilityDelegate(View v, AccessibilityDelegateCompat delegate)

Source Link

Document

Sets a delegate for implementing accessibility support via compositon as opposed to inheritance.

Usage

From source file:com.android.datetimepicker.AccessibleTextView.java

private void installAccessibilityDelegate() {
    ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() {
        @Override/*from   www  . j  av  a  2s.c  om*/
        public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
            super.onInitializeAccessibilityEvent(host, event);
            event.setClassName(Button.class.getName());
        }

        @Override
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.setClassName(Button.class.getName());
        }
    });
}

From source file:com.facebook.react.uimanager.AccessibilityDelegateUtil.java

public static void setDelegate(final View view) {
    // if a view already has an accessibility delegate, replacing it could cause problems,
    // so leave it alone.
    if (!ViewCompat.hasAccessibilityDelegate(view)) {
        ViewCompat.setAccessibilityDelegate(view, new AccessibilityDelegateCompat() {
            @Override// w w  w.j  a  v  a  2s.com
            public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
                super.onInitializeAccessibilityNodeInfo(host, info);
                String accessibilityHint = (String) view.getTag(R.id.accessibility_hint);
                AccessibilityRole accessibilityRole = (AccessibilityRole) view.getTag(R.id.accessibility_role);
                if (accessibilityRole == null) {
                    accessibilityRole = AccessibilityRole.NONE;
                }
                setRole(info, accessibilityRole, view.getContext());
                if (!(accessibilityHint == null)) {
                    String contentDescription = (String) info.getContentDescription();
                    if (contentDescription != null) {
                        contentDescription = contentDescription + ", " + accessibilityHint;
                        info.setContentDescription(contentDescription);
                    } else {
                        info.setContentDescription(accessibilityHint);
                    }
                }
            }
        });
    }
}

From source file:com.facebook.react.uimanager.AccessibilityRoleUtil.java

public static void setRole(final View view, final AccessibilityRole role) {
    // if a view already has an accessibility delegate, replacing it could cause problems,
    // so leave it alone.
    if (!ViewCompat.hasAccessibilityDelegate(view)) {
        ViewCompat.setAccessibilityDelegate(view, new AccessibilityDelegateCompat() {
            @Override//from ww  w  .  j ava2 s . com
            public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
                super.onInitializeAccessibilityNodeInfo(host, info);
                setRole(info, role, view.getContext());
            }
        });
    }
}

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

/**
 * {@inheritDoc}//www . j  a  va  2 s. c  o  m
 */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.accessibility_roledescription);

    TextView firstTextView = (TextView) findViewById(R.id.text_view_1);
    String roleDescriptionTextView = getString(R.string.accessibility_roledescription_role);
    ViewCompat.setAccessibilityDelegate(firstTextView,
            new RoleDescriptionAccessibilityDelegate(roleDescriptionTextView));

    TextView heading1 = (TextView) findViewById(R.id.text_heading_1);
    String roleDescriptionHeading1 = getString(R.string.accessibility_roledescription_h1_role);
    ViewCompat.setAccessibilityDelegate(heading1,
            new RoleDescriptionAccessibilityDelegate(roleDescriptionHeading1));

    TextView heading2 = (TextView) findViewById(R.id.text_heading_2);
    String roleDescriptionHeading2 = getString(R.string.accessibility_roledescription_h2_role);
    ViewCompat.setAccessibilityDelegate(heading2,
            new RoleDescriptionAccessibilityDelegate(roleDescriptionHeading2));

    TextView heading3 = (TextView) findViewById(R.id.text_heading_3);
    String roleDescriptionHeading3 = getString(R.string.accessibility_roledescription_h3_role);
    ViewCompat.setAccessibilityDelegate(heading3,
            new RoleDescriptionAccessibilityDelegate(roleDescriptionHeading3));

    // This is an example of an <strong>incorrect</strong> use of the role description.
    // You should not set the role description for standard widgets in your own code.
    Button button = (Button) findViewById(R.id.button);
    String roleDescriptionButton = getString(R.string.accessibility_roledescription_button_role);
    ViewCompat.setAccessibilityDelegate(button,
            new RoleDescriptionAccessibilityDelegate(roleDescriptionButton));
}

From source file:android.support.design.widget.CheckableImageButton.java

public CheckableImageButton(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() {
        @Override//  w w  w. jav  a 2  s  .c  o  m
        public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
            super.onInitializeAccessibilityEvent(host, event);
            event.setChecked(isChecked());
        }

        @Override
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.setCheckable(true);
            info.setChecked(isChecked());
        }
    });
}

From source file:com.redinput.datetimepickercompat.AccessibleLinearLayout.java

private void installAccessibilityDelegate() {
    // The accessibility delegate enables customizing accessibility behavior
    // via composition as opposed as inheritance. The main benefit is that
    // one can write a backwards compatible application by setting the delegate
    // only if the API level is high enough i.e. the delegate is part of the APIs.
    // The easiest way to achieve that is by using the support library which
    // takes the burden of checking API version and knowing which API version
    // introduced the delegate off the developer.
    ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() {

        @Override/* ww  w.  j  a v  a2 s.c  o  m*/
        public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
            super.onInitializeAccessibilityEvent(host, event);
            // Note that View.onInitializeAccessibilityNodeInfo was introduced in
            // ICS and we would like to tweak a bit the text that is reported to
            // accessibility services via the AccessibilityNodeInfo.
            event.getText().add(Button.class.getName());
        }

        @Override
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            // Note that View.onInitializeAccessibilityNodeInfo was introduced in
            // ICS and we would like to tweak a bit the text that is reported to
            // accessibility services via the AccessibilityNodeInfo.
            info.setText(Button.class.getName());
        }
    });
}

From source file:com.android.talkbacktests.testsession.RoleDescriptionTest.java

@Override
public View getView(final LayoutInflater inflater, ViewGroup container, Context context) {
    View view = inflater.inflate(R.layout.test_role_description, container, false);
    AccessibilityDelegateCompat buttonDelegate = new AccessibilityDelegateCompat() {
        @Override//from ww w.  j  a v a 2s.c o  m
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.setRoleDescription(getString(R.string.role_entry_point));
        }
    };
    View mailButton = view.findViewById(R.id.test_role_description_mailButton);
    mailButton.setContentDescription(getString(R.string.role_send_email));
    ViewCompat.setAccessibilityDelegate(mailButton, buttonDelegate);

    View playButton = view.findViewById(R.id.test_role_description_playButton);
    playButton.setContentDescription(getString(R.string.role_send_email));
    ViewCompat.setAccessibilityDelegate(playButton, buttonDelegate);

    View lockButton = view.findViewById(R.id.test_role_description_lockButton);
    lockButton.setContentDescription(getString(R.string.role_lock_screen));
    ViewCompat.setAccessibilityDelegate(lockButton, buttonDelegate);

    return view;
}

From source file:com.android.talkbacktests.testsession.DismissibleViewTest.java

@Override
public View getView(final LayoutInflater inflater, ViewGroup container, Context context) {
    View view = inflater.inflate(R.layout.test_dismissible_view, container, false);

    view.findViewById(R.id.test_dismissible_view_dismiss_button).setOnClickListener(this);
    view.findViewById(R.id.test_dismissible_view_reset_button).setOnClickListener(this);

    mContainer = (LinearLayout) view.findViewById(R.id.test_dismissible_view_container);
    mDismissibleView = view.findViewById(R.id.dismissible_view);
    ViewCompat.setAccessibilityDelegate(mDismissibleView, new MyDelegate());

    return view;/*w  w  w. j  a va 2s.  co m*/
}

From source file:com.google.android.apps.forscience.whistlepunk.review.GraphExploringSeekBar.java

private void init() {
    // Use an AccessibilityDelegate to add custom text to Accessibility events.
    ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() {
        @Override/*from  w w  w.  j a v  a  2 s  . c o  m*/
        public void onPopulateAccessibilityEvent(View host, AccessibilityEvent event) {
            super.onPopulateAccessibilityEvent(host, event);
            event.getText().clear();
            event.getText().add(generateEventText());
        }

        @Override
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.setText(generateEventText());
        }
    });

    Resources res = getContext().getResources();
    mFormat = res.getString(R.string.graph_exploring_seekbar_content_description);

    // Always use LTR layout, since graphs are always LTR.
    setLayoutDirection(LAYOUT_DIRECTION_LTR);
}

From source file:com.finchuk.clock2.alarms.ui.TempCheckableImageButton.java

public TempCheckableImageButton(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() {
        @Override//from  www .  j ava2s . c  o  m
        public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
            super.onInitializeAccessibilityEvent(host, event);
            event.setChecked(isChecked());
        }

        @Override
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.setCheckable(true);
            info.setChecked(isChecked());
        }
    });
}