android.view.accessibility.AccessibilityNodeInfo#setClassName ( )源码实例Demo

@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
  super.onInitializeAccessibilityNodeInfo(host, info);
  info.setClassName(RadioButton.class.getName());
  info.setCheckable(true);
  info.setChecked(false);
}
 

@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName("android.widget.RadioButton");
    info.setCheckable(true);
    info.setChecked(radioButton.isChecked());
}
 

@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setVisibleToUser(true);
    info.setClassName("android.widget.TextView");
    info.setText(text);
}
 

@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
  super.onInitializeAccessibilityNodeInfo(host, info);
  info.setClassName(ProgressBar.class.getName());
  AudioManager audioManager =
      (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
  if ((audioManager == null) || (VERSION.SDK_INT < VERSION_CODES.N)) {
    return;
  }

  // Setting the range info on a device pre-N causes the volume percent to be always announced
  // as "0 percent." Not setting the range info on M-devices results in the percentage
  // corresponding to the volume slider to be announced. This is slightly different from the
  // actual volume percentage due to how progress bars are set. Therefore, we should prefer the
  // range info spoken feedback when possible, but when not available (i.e. on M-devices) use
  // the spoken feedback corresponding to the progress bar progress instead.
  float minVolume = audioManager.getStreamMinVolume(volumeStreamType);
  float maxVolume = audioManager.getStreamMaxVolume(volumeStreamType);
  float currentVolume = audioManager.getStreamVolume(volumeStreamType);

  // Note that this corresponds to the actual volume percentage given by the Volume Settings
  // page, which may be different than what TalkBack uses. Volume Settings calculates percentage
  // of total volume and not percentage of the valid volume range, otherwise we would subtract
  // minimum volume from the current volume.
  float percent = ((currentVolume) / (maxVolume - minVolume)) * 100;

  AccessibilityNodeInfo.RangeInfo rangeInfo =
      AccessibilityNodeInfo.RangeInfo.obtain(RangeInfo.RANGE_TYPE_PERCENT, 0, 100, percent);
  info.setRangeInfo(rangeInfo);
}
 

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
	if (CAN_HIDE_DESCENDANTS) {
		super.onInitializeAccessibilityNodeInfo(host, info);
	} else {
		// Obtain a node for the host, then manually generate the list
		// of children to only include non-obscured views.
		final AccessibilityNodeInfo superNode = AccessibilityNodeInfo.obtain(info);
		super.onInitializeAccessibilityNodeInfo(host, superNode);

		info.setSource(host);
		final ViewParent parent = host.getParentForAccessibility();
		if (parent instanceof View) {
			info.setParent((View) parent);
		}
		copyNodeInfoNoChildren(info, superNode);
		superNode.recycle();

		addChildrenForAccessibility(info, (ViewGroup) host);
	}

	info.setClassName(DrawerLayout.class.getName());

	// This view reports itself as focusable so that it can intercept
	// the back button, but we should prevent this view from reporting
	// itself as focusable to accessibility services.
	info.setFocusable(false);
	info.setFocused(false);
	if (C.API_LOLLIPOP) {
		info.removeAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_FOCUS);
		info.removeAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_CLEAR_FOCUS);
	}
}
 

@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(CheckedTextView.class.getName());
    info.setCheckable(true);
    info.setChecked(mChecked);
}
 

@Override
public void onInitializeAccessibilityNodeInfo(@NonNull AccessibilityNodeInfo info) {
  super.onInitializeAccessibilityNodeInfo(info);
  info.setClassName(ACCESSIBILITY_CLASS_NAME);
  info.setCheckable(isCheckable());
  info.setClickable(isClickable());
  info.setChecked(isChecked());
}
 

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
        info.setClassName(SurfaceRenderView.class.getName());
    }
}
 

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
        info.setClassName(SurfaceRenderView.class.getName());
    }
}
 

@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(Button.class.getName());
}
 

public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(FmMediaController.class.getName());
}
 

public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(FmMediaController.class.getName());
}
 

@TargetApi(14)
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(HListView.class.getName());
}
 

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(ActionBar.Tab.class.getName());
}
 

@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(MediaController.class.getName());
}
 

@CalledByNative
private void setAccessibilityNodeInfoStringAttributes(AccessibilityNodeInfo node,
        String className, String contentDescription) {
    node.setClassName(className);
    node.setContentDescription(contentDescription);
}
 

@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
  super.onInitializeAccessibilityNodeInfo(info);
  info.setClassName(Button.class.getName());
}
 

@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(Button.class.getName());
}
 

@Override
public void onInitializeAccessibilityNodeInfo(final AccessibilityNodeInfo info) {
  super.onInitializeAccessibilityNodeInfo(info);
  info.setClassName(VolBar.class.getName());
}
 

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
    super.onInitializeAccessibilityNodeInfo(info);
    info.setClassName(VideoView.class.getName());
}