第二种：我们在onAccessibilityEvent事件监听的方法中做包名的过滤(这种方式最常用)
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
String pkgName = event.getPackageName().toString();
if("xxx.xxx.xxx".equals(pkgName)){
}else if("yyy.yyy.yyy".equals(pkgName)){
}else if("....".equals(pkgName)){
}
}
第三步、在onAccessibilityEvent方法中监听指定的事件
比如我们需要监听有通知栏消息的事件：
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
int eventType = event.getEventType();
switch (eventType) {
case AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED:
//.......
}
}
这个事件类型很多的，我们可以查看AccessibilityEvent类的源码：
@Deprecated
public static final int MAX_TEXT_LENGTH = 500;
/**
* Represents the event of clicking on a {@link android.view.View} like
* {@link android.widget.Button}, {@link android.widget.CompoundButton}, etc.
*/
public static final int TYPE_VIEW_CLICKED = 0x00000001;
/**
* Represents the event of long clicking on a {@link android.view.View} like
* {@link android.widget.Button}, {@link android.widget.CompoundButton}, etc.
*/
public static final int TYPE_VIEW_LONG_CLICKED = 0x00000002;
/**
* Represents the event of selecting an item usually in the context of an
* {@link android.widget.AdapterView}.
*/
public static final int TYPE_VIEW_SELECTED = 0x00000004;
/**
* Represents the event of setting input focus of a {@link android.view.View}.
*/
public static final int TYPE_VIEW_FOCUSED = 0x00000008;
/**
* Represents the event of changing the text of an {@link android.widget.EditText}.
*/
public static final int TYPE_VIEW_TEXT_CHANGED = 0x00000010;
/**
* Represents the event of opening a {@link android.widget.PopupWindow},
* {@link android.view.Menu}, {@link android.app.Dialog}, etc.
*/
public static final int TYPE_WINDOW_STATE_CHANGED = 0x00000020;
/**
* Represents the event showing a {@link android.app.Notification}.
*/
public static final int TYPE_NOTIFICATION_STATE_CHANGED = 0x00000040;
/**
* Represents the event of a hover enter over a {@link android.view.View}.
*/
public static final int TYPE_VIEW_HOVER_ENTER = 0x00000080;
/**
* Represents the event of a hover exit over a {@link android.view.View}.
*/
public static final int TYPE_VIEW_HOVER_EXIT = 0x00000100;
/**
* Represents the event of starting a touch exploration gesture.
*/
public static final int TYPE_TOUCH_EXPLORATION_GESTURE_START = 0x00000200;
/**
* Represents the event of ending a touch exploration gesture.
*/
public static final int TYPE_TOUCH_EXPLORATION_GESTURE_END = 0x00000400;
/**
* Represents the event of changing the content of a window and more
* specifically the sub-tree rooted at the event's source.
*/
public static final int TYPE_WINDOW_CONTENT_CHANGED = 0x00000800;
/**
* Represents the event of scrolling a view.
*/
public static final int TYPE_VIEW_SCROLLED = 0x00001000;
/**
* Represents the event of changing the selection in an {@link android.widget.EditText}.
*/
public static final int TYPE_VIEW_TEXT_SELECTION_CHANGED = 0x00002000;
/**
* Represents the event of an application making an announcement.
*/
public static final int TYPE_ANNOUNCEMENT = 0x00004000;
/**
* Represents the event of gaining accessibility focus.
*/
public static final int TYPE_VIEW_ACCESSIBILITY_FOCUSED = 0x00008000;
/**
* Represents the event of clearing accessibility focus.
*/
public static final int TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED = 0x00010000;
/**
* Represents the event of traversing the text of a view at a given movement granularity.
*/
public static final int TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY = 0x00020000;
/**
* Represents the event of beginning gesture detection.
*/
public static final int TYPE_GESTURE_DETECTION_START = 0x00040000;
/**
* Represents the event of ending gesture detection.
*/
public static final int TYPE_GESTURE_DETECTION_END = 0x00080000;
/**
* Represents the event of the user starting to touch the screen.
*/
public static final int TYPE_TOUCH_INTERACTION_START = 0x00100000;
/**
* Represents the event of the user ending to touch the screen.
*/
public static final int TYPE_TOUCH_INTERACTION_END = 0x00200000;
/**
* Change type for {@link #TYPE_WINDOW_CONTENT_CHANGED} event:
* The type of change is not defined.
*/
public static final int CONTENT_CHANGE_TYPE_UNDEFINED = 0x00000000;
/**
* Change type for {@link #TYPE_WINDOW_CONTENT_CHANGED} event:
* A node in the subtree rooted at the source node was added or removed.
*/
public static final int CONTENT_CHANGE_TYPE_SUBTREE = 0x00000001;
/**
* Change type for {@link #TYPE_WINDOW_CONTENT_CHANGED} event:
* The node's text changed.
*/
public static final int CONTENT_CHANGE_TYPE_TEXT = 0x00000002;
/**
* Change type for {@link #TYPE_WINDOW_CONTENT_CHANGED} event:
* The node's content description changed.
*/
public static final int CONTENT_CHANGE_TYPE_CONTENT_DESCRIPTION = 0x00000004;
