Ignore battery optimization settings to prevent suspension

Author: danog

app/src/main/AndroidManifest.xml

@@ -13,6 +13,7 @@
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS"/>
 
     <application
         android:extractNativeLibs="true"

app/src/main/java/com/termux/app/TermuxService.java

@@ -16,6 +16,7 @@
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.PowerManager;
+import android.provider.Settings;
 import android.util.Log;
 import android.widget.ArrayAdapter;
 
@@ -112,6 +113,17 @@ public int onStartCommand(Intent intent, int flags, int startId) {
                 mWifiLock = wm.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, EmulatorDebug.LOG_TAG);
                 mWifiLock.acquire();
 
+                if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                    String packageName = getPackageName();
+                    if (!pm.isIgnoringBatteryOptimizations(packageName)) {
+                        Intent whitelist = new Intent();
+                        whitelist.setAction(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
+                        whitelist.setData(Uri.parse("package:" + packageName));
+                        whitelist.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                        startActivity(whitelist);
+                    }
+                }
+
                 updateNotification();
             }
         } else if (ACTION_UNLOCK_WAKE.equals(action)) {