由于项目需要，需要发布版本默认开启调试模式，修改方式如下：
1.开启开发者模式
context.getSharedPreferences(DevelopmentSettings.PREF_FILE,Context.MODE_PRIVATE).edit().putBoolean(
DevelopmentSettings.PREF_SHOW, true).apply();
2.勾选USB调试
Settings.Global.putInt(context.getContentResolver(), Settings.Global.ADB_ENABLED, 1);
3.去掉USB插入时的授权提示
修改frameworks\base\packages\SystemUI\src\com\android\systemui\usb\UsbDebuggingActivity.java的如下内容：
@Override
public void onReceive(Context content, Intent intent) {
String action = intent.getAction();
if (!UsbManager.ACTION_USB_STATE.equals(action)) {
return;
}
/*boolean connected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false);
if (!connected) {
mActivity.finish();
}*/
boolean connected = false; //给connect赋值，关掉UI
if (!connected) {
mActivity.finish();
}
try {
IBinder b = ServiceManager.getService(USB_SERVICE);
IUsbManager service = IUsbManager.Stub.asInterface(b);
service.allowUsbDebugging(true, mKey);
} catch (Exception e) {
Log.e(TAG, "Unable to notify Usb service", e);
}
}