Battery Intent Tutorial

Overview

On Symbol devices like the MC40, extra battery information can be retrieved using the standard Android Battery Intent. Setting up to receive this information is the same as with consumer Android devices. However, the data that is returned to your application includes some extra information like:

• Backup Battery Voltage
• Battery Manufacture Date
• Battery Serial Number
• Part Number for Battery
• Unique ID for Battery
• Rated Capacity of the Battery
• Charge Cycle count of the Battery

Enabling the Receiver

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

Processing The Data

In the below code we are getting the Symbol specific battery information provided by the Battery Intent extras. Notice that some values are strings and other values are integers.

public void onReceive(Context context, Intent intent) {      
    if (BATTERY_STATE_CHANGED_INTENT.equals(intent.getAction())) {          
        int bkvoltage = intent.getExtras().getInt("bkvoltage");  
        String mfd = intent.getExtras().getString("mfd");  
        String serialnumber = intent.getExtras().getString("serialnumber");  
        String partnumber = intent.getExtras().getString("partnumber");  
        String uniqueid = intent.getExtras().getString("uniqueid");  
        int ratedcapacity = intent.getExtras().getInt("ratedcapacity");  
        int cycle = intent.getExtras().getInt("cycle");  
    }  
}