@Override
public boolean injectString(String str) throws InjectEventSecurityException {
checkNotNull(str);
checkState(Looper.myLooper() == mainLooper, "Expecting to be on main thread!");
initialize();
// No-op if string is empty.
if (str.length() == 0) {
Log.w(TAG, "Supplied string is empty resulting in no-op (nothing is typed).");
return true;
}
boolean eventInjected = false;
KeyCharacterMap keyCharacterMap = getKeyCharacterMap();
// TODO(user): Investigate why not use (as suggested in javadoc of keyCharacterMap.getEvents):
// http://developer.android.com/reference/android/view/KeyEvent.html#KeyEvent(long,
// java.lang.String, int, int)
KeyEvent[] events = keyCharacterMap.getEvents(str.toCharArray());
if (events == null) {
throw new RuntimeException(
String.format(
"Failed to get key events for string %s (i.e. current IME does not understand how to "
+ "translate the string into key events). As a workaround, you can use replaceText action"
+ " to set the text directly in the EditText field.",
str));
}
Log.d(TAG, String.format("Injecting string: \"%s\"", str));
for (KeyEvent event : events) {
checkNotNull(
event,
String.format(
"Failed to get event for character (%c) with key code (%s)",
event.getKeyCode(), event.getUnicodeChar()));
eventInjected = false;
for (int attempts = 0; !eventInjected && attempts < 4; attempts++) {
attempts++;
// We have to change the time of an event before injecting it because
// all KeyEvents returned by KeyCharacterMap.getEvents() have the same
// time stamp and the system rejects too old events. Hence, it is
// possible for an event to become stale before it is injected if it
// takes too long to inject the preceding ones.
event = KeyEvent.changeTimeRepeat(event, SystemClock.uptimeMillis(), 0);
eventInjected = injectKeyEvent(event);
}
if (!eventInjected) {
Log.e(
TAG,
String.format(
"Failed to inject event for character (%c) with key code (%s)",
event.getUnicodeChar(), event.getKeyCode()));
break;
}
}
return eventInjected;
}
