Epson Moverio Pro BT-2000, Руководство разработчика

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MOVERIO Pro Developer's Guide (Rev.1.4)
180
9.2. Acquiring Battery Information
Use the Filter intent broadcast by the operating system, and acquire the battery information.
Usage examples are displayed below.
■ Register the receiver of the battery information broadcast by the app
IntentFilter filter =
new IntentFilter();
filter.addAction(Intent. ACTION_BATTERY_CHANGED );
registerReceiver( mBroadcastReceiver , filter);
■ Acquire broadcast battery information
Example: Acquiring the amount of power remaining, status, and installation status for battery A
@Override
public void onReceive(Context context, Intent intent){
int level_a = intent.getIntExtra( BatteryManager.EXTRA_LEVEL_A , 0);
String status_a = intent.getStringExtra( BatteryManager.EXTRA_STATUS_A );
boolean present_a = intent.getBooleanExtra( BatteryManager.EXTRA_PRESENT_A , false );