Button added

app/src/main/java/de/edotzlaff/detection/MainActivity.java

 import com.google.android.gms.location.FusedLocationProviderClient;
 import com.google.android.gms.location.LocationServices;
 import com.google.android.gms.maps.GoogleMap;
-import com.google.android.gms.maps.OnMapReadyCallback;
-import com.google.android.gms.maps.SupportMapFragment;
-import com.google.android.gms.maps.model.LatLng;
 import com.google.android.gms.tasks.OnCompleteListener;
 import com.google.android.gms.tasks.Task;
 
-import org.w3c.dom.Text;
-
 import java.util.Calendar;
 import java.util.Objects;
 
     private SensorManager mSensorManager;
     private static final float mUpperThreshold = 1.0f; // für Emulator auf 1.5 setzen
     private static final float mLowerThreshold = 0.5f; // für Emulator auf 0.5 setzen
-    private static final long mShakeDetectionLockTimeMicroSeconds = 1000;
+    private static final long mShakeDetectionLockTimeMicroSeconds = 3500;
     private float mAccel;
     private float mAccelCurrent;
     private float mAccelLast;
         mAccel = 1f;
         mAccelCurrent = SensorManager.GRAVITY_EARTH;
         mAccelLast = SensorManager.GRAVITY_EARTH;
-        mShakeDetectionIsActive = true;
+        mShakeDetectionIsActive = false;
         mShakeDetected = false;
     }
     private final SensorEventListener mSensorListener = new SensorEventListener() {
             mAccelCurrent = (float) Math.sqrt((double) (x * x + y * y + z * z));
             float delta = mAccelCurrent - mAccelLast;
             mAccel = mAccel * 0.9f + delta;
-              Log.d(TAG,"mAccel: "+ mAccel);
+            //  Log.d(TAG,"mAccel: "+ mAccel);
             if (mShakeDetectionIsActive && !mShakeDetected) {
                 if(Math.abs(mAccel) > mUpperThreshold) {
-                    new CountDownTimer(500, 10) {
+
+                    new CountDownTimer(1000, 10) {
 
                         public void onTick(long millisUntilFinished) {
                             mShakeDetectionIsActive = false;
         Toast.makeText(getApplicationContext(), "!Earthquake detected!", Toast.LENGTH_SHORT).show();
         Log.d(TAG,"!Earthquake detected!");
         //setDataBaseValues();
-        new CountDownTimer(mShakeDetectionLockTimeMicroSeconds, 100) {
-
-            public void onTick(long millisUntilFinished) {
-                Log.d(TAG,"Earthquake: "+ millisUntilFinished  + " ms");
-            }
-
-
-            public void onFinish() {
-                Log.d(TAG,"Earthquake Detection is Unlocked: ");
-                    mShakeDetectionIsActive = true;
-                    mShakeDetected = false;
-
-            }
-        }.start();
+        Button buttonReadyToDetect = (Button) findViewById(R.id.buttonReadyToDetect);
+        buttonReadyToDetect.setEnabled(true);
 
 
 
                 startActivity(intent);
             }
         });
-
+        Button buttonReadyToDetect = (Button) findViewById(R.id.buttonReadyToDetect);
+        buttonReadyToDetect.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mShakeDetectionIsActive = true;
+                mShakeDetected = false;
+                buttonReadyToDetect.setEnabled(false);
+            }
+        });
     }
 
 

app/src/main/res/layout/activity_main.xml

         android:layout_marginBottom="0dp"
         android:text="Show Earthquake Location" />
 
+    <Button
+        android:id="@+id/buttonReadyToDetect"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_above="@id/btnEarthquakeLocation"
+        android:layout_alignParentStart="false"
+        android:layout_alignParentLeft="false"
+        android:layout_alignParentEnd="false"
+        android:layout_alignParentBottom="false"
+        android:layout_centerInParent="true"
+        android:text="Sensor Ready To Detect" />
+
 </RelativeLayout>