dispatchKeyEvent获取扫描结果
这是在CSDN上看到的评论,打印出来的并没有有关扫描的信息,我把打印的日志放在了最外层,发现其中一条是有关扫描的条码 event
Action:ACTION_MULTIPLE,keyCode:KEYCODE_UNKNOWN
dispatchKeyEvent: KeyEvent { action=ACTION_MULTIPLE, keyCode=KEYCODE_UNKNOWN, scanCode=0, characters="3433422404403", metaState=0, flags=0x0, repeatCount=0, eventTime=365996, downTime=365996, deviceId=-1, source=0x101 }
获取扫描文本
上面获取扫描文字使用 event.getUnicodeChar() 获取,目前我打印出来的结果是 :0,上面打印的结果,我猜想是 event.getCharacters()
onKeyMultiple
action的类型是 ACTION_MULTIPLE,可直接通过重写onKeyMultiple方法去过滤掉其他的event
@Override
public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
Log.e("TAG", "onKeyMultiple------: " + event.toString());
Log.i("TAG", "onKeyMultiple------: " + event.getCharacters());
return super.onKeyMultiple(keyCode, repeatCount, event);
}
打印结果
E/TAG: onKeyMultiple------: KeyEvent { action=ACTION_MULTIPLE, keyCode=KEYCODE_UNKNOWN, scanCode=0, characters="3433422404403", metaState=0, flags=0x0, repeatCount=0, eventTime=3548959, downTime=3548959, deviceId=-1, source=0x101 }
I/TAG: onKeyMultiple------: 3433422404403
event.getCharacters()弃用问题 (返回String)
并未找到可替代的方案。目前使用这种方式解决了现有问题