title: 04-28 16:06:29.756: W/SystemWebViewClient(16778): URL blocked by whitelist:
body: <p>This problem appeared when I update the ionic and cordova, $http can't normally work any more, always return null. in debug line apeared "04-28 16:06:29.756: W/SystemWebViewClient(16778): URL blocked by whitelist:"</p>