小编给大家分享一下如何使用Android实现开机充电图标和充电动画效果，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！
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首先驱动需要先获取到2个power supply
kernel\msm-3.18\drivers\usb\phy\phy-msm-usb.c
motg->usb_psy.name = "usb";motg->usb_psy.type = POWER_SUPPLY_TYPE_USB;motg->usb_psy.supplied_to = otg_pm_power_supplied_to;motg->usb_psy.num_supplicants = ARRAY_SIZE(otg_pm_power_supplied_to);motg->usb_psy.properties = otg_pm_power_props_usb;motg->usb_psy.num_properties = ARRAY_SIZE(otg_pm_power_props_usb);motg->usb_psy.get_property = otg_power_get_property_usb;motg->usb_psy.set_property = otg_power_set_property_usb;motg->usb_psy.property_is_writeable = otg_power_property_is_writeable_usb;if (!msm_otg_register_power_supply(pdev, motg)) psy = &motg->usb_psy;
kernel\msm-3.18\drivers\power\bq2570x\bq2570x_charger.c
usb_psy = power_supply_get_by_name("usb");static int bq2570x_psy_register(struct bq2570x *bq){ int ret; bq->batt_psy.name = "dc_o2"; bq->batt_psy.type = POWER_SUPPLY_TYPE_BATTERY; bq->batt_psy.properties = bq2570x_charger_props; bq->batt_psy.num_properties = ARRAY_SIZE(bq2570x_charger_props); bq->batt_psy.get_property = bq2570x_charger_get_property; bq->batt_psy.set_property = bq2570x_charger_set_property; bq->batt_psy.external_power_changed = bq2570x_external_power_changed; bq->batt_psy.property_is_writeable = bq2570x_charger_is_writeable; ret = power_supply_register(bq->dev, &bq->batt_psy); if (ret < 0) { pr_err("failed to register batt_psy:%d\n", ret); return ret; } return 0;}
充电的闪电图标和充电动画启动逻辑
闪电图标启动逻辑：POWER_SUPPLY_TYPE_USB的power supply上报USB类型(CDP,DCP,USB)
power_supply_set_supply_type(bq->usb_psy, POWER_SUPPLY_TYPE_USB);ret = power_supply_set_online(bq->usb_psy, true);power_supply_changed(bq->usb_psy);
充电动画的启动逻辑：POWER_SUPPLY_TYPE_BATTERY的power supply上报充电状态
(CHARGE_STATE_NOT_CHARGING，CHARGE_STATE_FASTCHARGE)bq->charge_state = CHARGE_STATE_FASTCHARGE;power_supply_changed(&bq->batt_psy);
利用dumpsys分析当前battery 状态
V2_PRO:/ # dumpsys batteryCurrent Battery Service state: AC powered: false USB powered: true Wireless powered: false Max charging current: 0 Max charging voltage: 0 Charge counter: 0 status: 2 health: 2 present: true level: 46 scale: 100 voltage: 7 temperature: 270 technology: Li-ion
如上主要关注2个字段：
USB powered : true
那么闪电图标应该会出现
status: 2
那么充电动画应该启动了
同时我们还可以通过shell指令的方式启动充电图标和充电动画
dumpsys battery set usb 1
闪电图标应该会出现
dumpsys battery set status 2
充电动画应该启动了
dumpsys battery set usb 0
闪电图标消失
dumpsys battery set status 4
充电动画消失
以上是“如何使用Android实现开机充电图标和充电动画效果”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注创新互联行业资讯频道！