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Add support for earlier Android versions in platform_services example (#8621)
* Add support for earlier Android versions * Addressed comments
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@ -4,6 +4,9 @@
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package com.example.flutter;
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import android.content.ContextWrapper;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.os.BatteryManager;
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import android.os.Build.VERSION;
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import android.os.Build.VERSION_CODES;
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@ -36,11 +39,21 @@ public class ExampleActivity extends FlutterActivity {
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}
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private void getBatteryLevel(Response response) {
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BatteryManager batteryManager = (BatteryManager) getSystemService(BATTERY_SERVICE);
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int batteryLevel = -1;
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if (VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP) {
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response.success(batteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY));
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BatteryManager batteryManager = (BatteryManager) getSystemService(BATTERY_SERVICE);
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batteryLevel = batteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY);
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} else {
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response.error("Not available", "Battery level not available.", null);
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Intent intent = new ContextWrapper(getApplicationContext()).
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registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
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batteryLevel = (intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1) * 100) /
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intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
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}
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if (batteryLevel != -1) {
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response.success(batteryLevel);
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} else {
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response.error("UNAVAILABLE", "Battery level not available.", null);
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}
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}
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}
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@ -24,7 +24,7 @@ class _PlatformServicesState extends State<PlatformServices> {
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} else {
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try {
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final int result = await platform.invokeMethod('getBatteryLevel');
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batteryLevel = 'Battery level at $result. %';
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batteryLevel = 'Battery level at $result % .';
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} on PlatformException catch (e) {
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batteryLevel = "Failed to get battery level: '${e.message}'.";
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}
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