想使用Android系統的電池偵聽和系統的電池圖片;
引入源代碼中的兩個xml文件(這裡我在android2.2的jar包中找不到,所以才引入,源代碼路徑:C:\android-sdk-windows\platforms\android-8\data\res\drawable),之後會發現stat_sys_battery.xml報錯,所以我就將下圖
1.這些圖引入到我的drawable目錄下,然後將stat_sys_battery.xml中的圖片引入路徑更改,如下:
- <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.接下來是在activity中的操作:
創建一個IntentFilter
- <span style="white-space:pre"> </span>private IntentFilter mIntentFilter;
在oncreate的方法中:加入:
- <span style="white-space:pre"> </span>//電池相關
- <span style="white-space:pre"> </span>mIntentFilter = new IntentFilter();
- <span style="white-space:pre"> </span>mIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
3.接收廣播
- <span style="white-space:pre"> </span>//聲明消息處理過程
- 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);
- //要看看是不是我們要處理的消息
- if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
- //電池電量,數字
- Log.d("Battery", "" + intent.getIntExtra("level", 0));
- //電池最大容量
- Log.d("Battery", "" + intent.getIntExtra("scale", 0));
- //電池伏數
- Log.d("Battery", "" + intent.getIntExtra("voltage", 0));
- //電池溫度
- Log.d("Battery", "" + intent.getIntExtra("temperature", 0));
- //電池狀態,返回是一個數字
- // BatteryManager.BATTERY_STATUS_CHARGING 表示是充電狀態
- // BatteryManager.BATTERY_STATUS_DISCHARGING 放電中
- // BatteryManager.BATTERY_STATUS_NOT_CHARGING 未充電
- // BatteryManager.BATTERY_STATUS_FULL 電池滿
- Log.d("Battery", "ss" + intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_CHARGING));
- //充電類型 BatteryManager.BATTERY_PLUGGED_AC 表示是充電器,不是這個值,表示是 USB
- Log.d("Battery", "" + intent.getIntExtra("plugged", 0));
- //電池健康情況,返回也是一個數字
- //BatteryManager.BATTERY_HEALTH_GOOD 良好
- //BatteryManager.BATTERY_HEALTH_OVERHEAT 過熱
- //BatteryManager.BATTERY_HEALTH_DEAD 沒電
- //BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE 過電壓
- //BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE 未知錯誤
- Log.d("Battery", "" + intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN));
- }
- }
- };
這裡真正處理圖片變換的是以下幾句話:其他的我是在做
備注
- <span style="font-weight: bold; white-space: pre; "> </span>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方法中注冊消息處理器
- <span style="white-space:pre"> </span>registerReceiver(mIntentReceiver, mIntentFilter);
5.在onPause方法中注銷
- <span style="white-space:pre"> </span>unregisterReceiver(mIntentReceiver);