windows system path
ANDROID_AVD_HOME
https://home.gamer.com.tw/creationDetail.php?sn=3296359
http://www.howtogeek.com/240657/how-to-fix-pin-errors-after-restoring-from-twrp-android-backups/
http://wznote.blogspot.tw/2015/12/restore-line-to-android-6-without-root.html
https://github.com/googleads/googleads-mobile-android-examples See Issues
最新版 9.0.2 or 9.0.0 (com.google.firebase:firebase-ads:9.0.2)
Log查 w/Ads
W/Ads: Failed to connect to remote ad request service.
W/Ads: Could not start the ad request service.
W/Ads: Failed to load ad: 0
整個無言！ …………..最簡單的範例也出錯！！
MainActivity.java
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if(event.getKeyCode() == KeyEvent.KEYCODE_BACK && event.getAction() != KeyEvent.ACTION_UP) { //按下有用，key up 無用
if (mXWalkView != null && mXWalkView.getNavigationHistory().canGoBack()) {
mXWalkView.getNavigationHistory().navigate(XWalkNavigationHistory.Direction.BACKWARD, 1);
return true;
}
}
return false;
}
http://www.cnblogs.com/ct2011/p/4100132.html
