public QueryController(UiAutomatorBridge bridge) {
mUiAutomatorBridge = bridge;
bridge.setOnAccessibilityEventListener(
new OnAccessibilityEventListener() {
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
synchronized (mLock) {
switch (event.getEventType()) {
case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED:
// don't trust event.getText(), check for nulls
if (event.getText() != null && event.getText().size() > 0) {
if (event.getText().get(0) != null)
mLastActivityName = event.getText().get(0).toString();
}
break;
case AccessibilityEvent.TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY:
// don't trust event.getText(), check for nulls
if (event.getText() != null && event.getText().size() > 0)
if (event.getText().get(0) != null)
mLastTraversedText = event.getText().get(0).toString();
if (DEBUG) Log.d(LOG_TAG, "Last text selection reported: " + mLastTraversedText);
break;
}
mLock.notifyAll();
}
}
});
}
/**
* Last activity to report accessibility events.
*
* @deprecated The results returned should be considered unreliable
* @return String name of activity
*/
@Deprecated
public String getCurrentActivityName() {
mUiAutomatorBridge.waitForIdle();
synchronized (mLock) {
return mLastActivityName;
}
}
/**
* Returns the last text selection reported by accessibility event
* TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY. One way to cause this event is using a DPad
* arrows to focus on UI elements.
*/
public String getLastTraversedText() {
mUiAutomatorBridge.waitForIdle();
synchronized (mLock) {
if (mLastTraversedText.length() > 0) {
return mLastTraversedText;
}
}
return null;
}
/**
* Gets the root node from accessibility and if it fails to get one it will retry every 250ms for
* up to 1000ms.
*
* @return null if no root node is obtained
*/
protected AccessibilityNodeInfo getRootNode() {
final int maxRetry = 4;
final long waitInterval = 250;
AccessibilityNodeInfo rootNode = null;
for (int x = 0; x < maxRetry; x++) {
rootNode = mUiAutomatorBridge.getRootInActiveWindow();
if (rootNode != null) {
return rootNode;
}
if (x < maxRetry - 1) {
Log.e(LOG_TAG, "Got null root node from accessibility - Retrying...");
SystemClock.sleep(waitInterval);
}
}
return rootNode;
}
protected AccessibilityNodeInfo findAccessibilityNodeInfo(
UiSelector selector, boolean isCounting) {
mUiAutomatorBridge.waitForIdle();
initializeNewSearch();
if (DEBUG) Log.d(LOG_TAG, "Searching: " + selector);
synchronized (mLock) {
AccessibilityNodeInfo rootNode = getRootNode();
if (rootNode == null) {
Log.e(LOG_TAG, "Cannot proceed when root node is null. Aborted search");
return null;
}
// Copy so that we don't modify the original's sub selectors
UiSelector uiSelector = new UiSelector(selector);
return translateCompoundSelector(uiSelector, rootNode, isCounting);
}
}
/** Clears the last text selection value saved from the TYPE_VIEW_TEXT_SELECTION_CHANGED event */
public void clearLastTraversedText() {
mUiAutomatorBridge.waitForIdle();
synchronized (mLock) {
mLastTraversedText = "";
}
}
/**
* Last package to report accessibility events
*
* @return String name of package
*/
public String getCurrentPackageName() {
mUiAutomatorBridge.waitForIdle();
AccessibilityNodeInfo rootNode = getRootNode();
if (rootNode == null) return null;
return rootNode.getPackageName() != null ? rootNode.getPackageName().toString() : null;
}
public AccessibilityNodeInfo getAccessibilityRootNode() {
return mUiAutomatorBridge.getRootInActiveWindow();
}
