Android Launch!adb is running normally. Performing com.china.hello.HelloChina activity launchAutomatic Target Mode: launching new emulator with compatible AVD 'hello'Launching a new emulator with Virtual Device 'hello' New emulator found: emulator-5554Waiting for HOME ('android.process.acore') to be launched...WARNING: Application does not specify an API level requirement! Device API version is 8 (Android 2.2)HOME is up on device 'emulator-5554'Uploading HelloAndroid.apk onto device 'emulator-5554'Installing HelloAndroid.apk...Success!Failed to upload HelloAndroid.apk on device 'emulator-5554'com.android.ddmlib.AdbCommandRejectedException: device not foundLaunch canceled!