Hotfix to avoid crash on API<=18

Author: frazew

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "fr.frazew.virtualgyroscope"
         minSdkVersion 16
         targetSdkVersion 23
-        versionCode 120
-        versionName "1.2"
+        versionCode 121
+        versionName "1.21"
     }
     buildTypes {
         release {

app/src/main/java/fr/frazew/virtualgyroscope/SensorModel.java

@@ -7,16 +7,14 @@ public class SensorModel {
     public int minDelay;
     public float maxRange;
     public boolean alreadyThere = false;
-    public String stringType;
     public String permission;
 
-    public SensorModel(int sensorType, String name, int handle, float resolution, int minDelay, float maxRange, String stringType, String permission) {
+    public SensorModel(int sensorType, String name, int handle, float resolution, int minDelay, float maxRange, String permission) {
         this.name = name;
         this.handle = (handle == -1 ? sensorType : handle);
         this.resolution = resolution;
         this.minDelay = minDelay;
         this.maxRange = maxRange;
-        this.stringType = stringType;
         this.permission = permission;
     }
 }

app/src/main/java/fr/frazew/virtualgyroscope/XposedMod.java

@@ -24,11 +24,11 @@ public class XposedMod implements IXposedHookLoadPackage {
     public static boolean FIRST_LAUNCH_SINCE_BOOT = true;
 
     public static final SparseArray<SensorModel> sensorsToEmulate = new SparseArray<SensorModel>() {{
-        put(Sensor.TYPE_ROTATION_VECTOR, new SensorModel(Sensor.TYPE_ROTATION_VECTOR, "VirtualSensor RotationVector", -1, 0.01F, -1, -1, Sensor.STRING_TYPE_ROTATION_VECTOR, "none"));
-        put(Sensor.TYPE_GYROSCOPE, new SensorModel(Sensor.TYPE_GYROSCOPE, "VirtualSensor Gyroscope", -1, 0.01F, -1, (float)Math.PI, Sensor.STRING_TYPE_GYROSCOPE, "android.hardware.sensor.gyroscope"));
-        put(Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR, new SensorModel(Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR, "VirtualSensor GeomagneticRotationVector", -1, 0.01F, -1, -1, Sensor.STRING_TYPE_GEOMAGNETIC_ROTATION_VECTOR, "none"));
-        put(Sensor.TYPE_GRAVITY, new SensorModel(Sensor.TYPE_GRAVITY, "VirtualSensor Gravity", -1, 0.01F, -1, -1, Sensor.STRING_TYPE_GRAVITY, "none"));
-        put(Sensor.TYPE_LINEAR_ACCELERATION, new SensorModel(Sensor.TYPE_LINEAR_ACCELERATION, "VirtualSensor LinearAcceleration", 4242, 0.01F, -1, -1, Sensor.STRING_TYPE_LINEAR_ACCELERATION, "none")); // Had to use another handle as it broke the magnetic sensor's readings (?!)
+        put(Sensor.TYPE_ROTATION_VECTOR, new SensorModel(Sensor.TYPE_ROTATION_VECTOR, "VirtualSensor RotationVector", -1, 0.01F, -1, -1, "none"));
+        put(Sensor.TYPE_GYROSCOPE, new SensorModel(Sensor.TYPE_GYROSCOPE, "VirtualSensor Gyroscope", -1, 0.01F, -1, (float)Math.PI, "android.hardware.sensor.gyroscope"));
+        if (Build.VERSION.SDK_INT >= 19) put(Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR, new SensorModel(Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR, "VirtualSensor GeomagneticRotationVector", -1, 0.01F, -1, -1, "none"));
+        put(Sensor.TYPE_GRAVITY, new SensorModel(Sensor.TYPE_GRAVITY, "VirtualSensor Gravity", -1, 0.01F, -1, -1, "none"));
+        put(Sensor.TYPE_LINEAR_ACCELERATION, new SensorModel(Sensor.TYPE_LINEAR_ACCELERATION, "VirtualSensor LinearAcceleration", 4242, 0.01F, -1, -1, "none")); // Had to use another handle as it broke the magnetic sensor's readings (?!)
     }};
 
     @Override

app/src/main/java/fr/frazew/virtualgyroscope/hooks/SensorChangeHook.java

@@ -2,6 +2,7 @@
 
 import android.hardware.Sensor;
 import android.hardware.SensorManager;
+import android.os.Build;
 import android.util.SparseArray;
 
 import java.util.ArrayList;
@@ -53,7 +54,7 @@ public static List<Object> changeSensorValues(Sensor s, float[] accelerometerVal
                     System.arraycopy(values, 0, returnValues, 0, values.length);
                     virtualListener.sensorRef = sensors.get(Sensor.TYPE_GYROSCOPE);
                 }
-            } else if (virtualListener.getSensor().getType() == Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR || virtualListener.getSensor().getType() == Sensor.TYPE_ROTATION_VECTOR) {
+            } else if ((Build.VERSION.SDK_INT >= 19 && virtualListener.getSensor().getType() == Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR) || virtualListener.getSensor().getType() == Sensor.TYPE_ROTATION_VECTOR) {
                 float[] values = new float[5];
                 float[] rotationMatrix = new float[9];
                 SensorManager.getRotationMatrix(rotationMatrix, null, accelerometerValues, magneticValues);
@@ -71,7 +72,7 @@ public static List<Object> changeSensorValues(Sensor s, float[] accelerometerVal
                 System.arraycopy(values, 0, returnValues, 0, values.length);
                 if (virtualListener.getSensor().getType() == Sensor.TYPE_ROTATION_VECTOR)
                     virtualListener.sensorRef = sensors.get(Sensor.TYPE_ROTATION_VECTOR);
-                else
+                else if (Build.VERSION.SDK_INT >= 19)
                     virtualListener.sensorRef = sensors.get(Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR);
             } else if (virtualListener.getSensor().getType() == Sensor.TYPE_GRAVITY) {
                 float[] values = new float[3];

app/src/main/java/fr/frazew/virtualgyroscope/hooks/SystemSensorManagerHook.java

@@ -54,10 +54,10 @@ public static List<Object> fillSensorLists(ArrayList<Sensor> fullSensorList, Spa
                 XposedHelpers.setObjectField(s, "mResolution", model.resolution == -1 ? 0.01F : model.resolution); // This 0.01F is a placeholder, it doesn't seem to change anything but I keep it
                 if (model.maxRange != -1)
                     XposedHelpers.setObjectField(s, "mMaxRange", model.maxRange);
-                XposedHelpers.setObjectField(s, "mStringType", model.stringType);
-                if (!model.permission.equals("none")) {
+
+                if (!model.permission.equals("none"))
                     XposedHelpers.setObjectField(s, "mRequiredPermission", model.permission);
-                }
+
                 fullSensorList.add(s);
                 handleToSensor.append(model.handle, s);
             }