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Editor to share with you how java uses radio to check electricity changes, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

Public class BatteryChangedReceiver extends BroadcastReceiver {

@ Override

Public void onReceive (Context context, Intent intent) {

/ / current power

Int currLevel = intent.getIntExtra (BatteryManager.EXTRA_LEVEL, 0)

/ / Total electricity

Int total = intent.getIntExtra (BatteryManager.EXTRA_SCALE, 1)

Int percent = currLevel * 100 / total

}

}

Configure the following XMl in the manifest file:

Get the power immediately instead of waiting for the power to change, such as showing the battery immediately when the reader is turned on. We can obtain it in the following ways:

Intent batteryIntent = getApplicationContext () .registerReceiver (null

New IntentFilter (Intent.ACTION_BATTERY_CHANGED))

Int currLevel = batteryIntent.getIntExtra (BatteryManager.EXTRA_LEVEL, 0)

Int total = batteryIntent.getIntExtra (BatteryManager.EXTRA_SCALE, 1)

Int percent = currLevel * 100 / total

The above is all the contents of the article "how to use radio to check power changes in java". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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