安卓 开发 监听电量

IntentFilter mIntentFilter = new IntentFilter();
mIntentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
registerReceiver(mReceiverBatteryInfo, mIntentFilter);

    private BroadcastReceiver mReceiverBatteryInfo = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            Log.i(TAG, "mReceiverBatteryInfo action = " + action);

            if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
                boolean present =  intent.getBooleanExtra("present",false);
                int health = intent.getIntExtra("health", 0);
                int level = intent.getIntExtra("level", 0);
                int scale = intent.getIntExtra("voltage", 0);
                int plugType = intent.getIntExtra("plugged", 0);
                int status = intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN);
                int temperature = intent.getIntExtra("temperature", BatteryManager.BATTERY_HEALTH_UNKNOWN);
                setSummary(present,health,level,scale, plugType, status, temperature);
            }
        }
    };

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