Merge "Contacts: Check the state of writing system settings permission."

        @Override

        public void onCheckedChanged(CompoundButton buttonView,

                boolean isChecked) {

            mEnable = isChecked ? CallUtil.ENABLE_VIDEO_CALLING:CallUtil.DISABLE_VIDEO_CALLING;

            CallUtil.createVideoCallingDialog(isChecked, mContext);

            Settings.System.putInt(mContext.getContentResolver(),CallUtil.CONFIG_VIDEO_CALLING,

                    mEnable);

            CallUtil.saveVideoCallConfig(mContext,isChecked);

            if (mVideoCallingCallback != null)

                mVideoCallingCallback.updateContact();

        }