android 电池状态侦听显示 电量 充电动态显示

今天想使用android系统的电池侦听和系统的电池图片；





引入源代码中的两个xml文件（这里我在android2.2的jar包中找不到，所以才引入，源代码路径：C:\android-sdk-windows\platforms\android-8\data\res\drawable），之后会发现stat_sys_battery.xml报错，所以我就将下图





1.这些图引入到我的drawable目录下，然后将stat_sys_battery.xml中的图片引入路径更改，如下：

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<level-list xmlns:android="http://schemas.android.com/apk/res/android">

<item android:maxLevel="4" android:drawable="@drawable/stat_sys_battery_0" />

<item android:maxLevel="14" android:drawable="@drawable/stat_sys_battery_10" />

<item android:maxLevel="29" android:drawable="@drawable/stat_sys_battery_20" />

<item android:maxLevel="49" android:drawable="@drawable/stat_sys_battery_40" />

<item android:maxLevel="69" android:drawable="@drawable/stat_sys_battery_60" />

<item android:maxLevel="89" android:drawable="@drawable/stat_sys_battery_80" />

<item android:maxLevel="100" android:drawable="@drawable/stat_sys_battery_100" />

</level-list>

2.接下来是在activity中的操作：

创建一个IntentFilter

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private IntentFilter mIntentFilter;

在oncreate的方法中：加入：

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//电池相关

mIntentFilter = new IntentFilter();

mIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);

3.接收广播

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//声明消息处理过程

private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {

@Override

public void onReceive(Context context, Intent intent) {

String action = intent.getAction();

int status = intent.getIntExtra("status", 0);

int health = intent.getIntExtra("health", 0);

boolean present = intent.getBooleanExtra("present", false);

int level = intent.getIntExtra("level", 0);

int scale = intent.getIntExtra("scale", 0);

int icon_small = intent.getIntExtra("icon-small", 0);

int plugged = intent.getIntExtra("plugged", 0);

int voltage = intent.getIntExtra("voltage", 0);

int temperature = intent.getIntExtra("temperature", 0);

String technology = intent.getStringExtra("technology");

String statusString = "";

switch (status) {

case BatteryManager.BATTERY_STATUS_UNKNOWN:

statusString = "unknown";

break;

case BatteryManager.BATTERY_STATUS_CHARGING:

statusString = "charging";

battery_image.setImageResource(R.drawable.stat_sys_battery_charge);

battery_image.getDrawable().setLevel(level);

break;

case BatteryManager.BATTERY_STATUS_DISCHARGING:

statusString = "discharging";

battery_image.setImageResource(R.drawable.stat_sys_battery);

battery_image.getDrawable().setLevel(level);

break;

case BatteryManager.BATTERY_STATUS_NOT_CHARGING:

statusString = "not charging";

break;

case BatteryManager.BATTERY_STATUS_FULL:

statusString = "full";

break;

}

String healthString = "";

switch (health) {

case BatteryManager.BATTERY_HEALTH_UNKNOWN:

healthString = "unknown";

break;

case BatteryManager.BATTERY_HEALTH_GOOD:

healthString = "good";

break;

case BatteryManager.BATTERY_HEALTH_OVERHEAT:

healthString = "overheat";

break;

case BatteryManager.BATTERY_HEALTH_DEAD:

healthString = "dead";

break;

case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:

healthString = "voltage";

break;

case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:

healthString = "unspecified failure";

break;

}

String acString = "";

switch (plugged) {

case BatteryManager.BATTERY_PLUGGED_AC:

acString = "plugged ac";

break;

case BatteryManager.BATTERY_PLUGGED_USB:

acString = "plugged usb";

break;

}

Log.i("cat", statusString);

Log.i("cat", healthString);

Log.i("cat", String.valueOf(present));

Log.i("cat", String.valueOf(level));

Log.i("cat", String.valueOf(scale));

Log.i("cat", String.valueOf(icon_small));

Log.i("cat", acString);

Log.i("cat", String.valueOf(voltage));

Log.i("cat", String.valueOf(temperature));

Log.i("cat", technology);

//要看看是不是我们要处理的消息

if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {

//电池电量，数字

Log.d("Battery", "" + intent.getIntExtra("level", 0));

//电池最大容量

Log.d("Battery", "" + intent.getIntExtra("scale", 0));

//电池伏数

Log.d("Battery", "" + intent.getIntExtra("voltage", 0));

//电池温度

Log.d("Battery", "" + intent.getIntExtra("temperature", 0));

//电池状态，返回是一个数字

// BatteryManager.BATTERY_STATUS_CHARGING 表示是充电状态

// BatteryManager.BATTERY_STATUS_DISCHARGING 放电中

// BatteryManager.BATTERY_STATUS_NOT_CHARGING 未充电

// BatteryManager.BATTERY_STATUS_FULL 电池满

Log.d("Battery", "ss" + intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_CHARGING));

//充电类型 BatteryManager.BATTERY_PLUGGED_AC 表示是充电器，不是这个值，表示是 USB

Log.d("Battery", "" + intent.getIntExtra("plugged", 0));

//电池健康情况，返回也是一个数字

//BatteryManager.BATTERY_HEALTH_GOOD 良好

//BatteryManager.BATTERY_HEALTH_OVERHEAT 过热

//BatteryManager.BATTERY_HEALTH_DEAD 没电

//BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE 过电压

//BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE 未知错误

Log.d("Battery", "" + intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN));

}

}

};

这里真正处理图片变换的是以下几句话：其他的我是在做备注

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<strong> </strong>switch (status) {

case BatteryManager.BATTERY_STATUS_UNKNOWN:

statusString = "unknown";

break;

case BatteryManager.BATTERY_STATUS_CHARGING:

statusString = "charging";

battery_image.setImageResource(R.drawable.stat_sys_battery_charge);

battery_image.getDrawable().setLevel(level);

break;

case BatteryManager.BATTERY_STATUS_DISCHARGING:

statusString = "discharging";

battery_image.setImageResource(R.drawable.stat_sys_battery);

battery_image.getDrawable().setLevel(level);

break;

case BatteryManager.BATTERY_STATUS_NOT_CHARGING:

statusString = "not charging";

break;

case BatteryManager.BATTERY_STATUS_FULL:

statusString = "full";

break;

}

4.在onResume方法中注册消息处理器

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registerReceiver(mIntentReceiver, mIntentFilter);

5.在onPause方法中注销

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unregisterReceiver(mIntentReceiver);