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Gonzalo Orsi
Front End Web Development Techdegree Student 1,361 PointsBuild a Simple Android App / Shaking Things Up / The Activity Lifecycle / Challenge Tasks number 1
Inside the 'onCreate()' method of MainActivity, add a line of code to execute the 'onCreate()' method of the parent, or superclass, of this MainActivity class. Don’t forget to pass along the parameter, and call it before the 'aString' variable is set!
package com.example;
import android.os.Bundle;
import android.view.View;
import android.hardware.Sensor;
import android.hardware.SensorManager;
public class MainActivity extends Activity {
public static String aString;
private SensorManager mSensorManager;
private Sensor mAccelerometer;
private ShakeDetector mShakeDetector;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(); //MY ANSWER ~`I'm stuck
setContentView(R.layout.activity_main);
aString = "This variable is set UNKNOWN the 'otherString' variable in Activity";
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
mShakeDetector = new ShakeDetector();
}
public void onPause() {
}
public void onResume() {
mSensorManager.registerListener(mShakeDetector, mAccelerometer, SensorManager.SENSOR_DELAY_UI);
}
}
2 Answers
Ernest Grzybowski
Treehouse Project ReviewerThis code should work:
package com.example;
import android.os.Bundle;
import android.view.View;
import android.hardware.Sensor;
import android.hardware.SensorManager;
public class MainActivity extends Activity {
public static String aString;
private SensorManager mSensorManager;
private Sensor mAccelerometer;
private ShakeDetector mShakeDetector;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
aString = "This variable is set UNKNOWN the 'otherString' variable in Activity";
mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
mShakeDetector = new ShakeDetector();
}
public void onPause() {
}
public void onResume() {
mSensorManager.registerListener(mShakeDetector, mAccelerometer, SensorManager.SENSOR_DELAY_UI);
}
}
Don't forget to include the same parameter for 'super.onCreate()' that is required for this 'onCreate()' method.
Gonzalo Orsi
Front End Web Development Techdegree Student 1,361 PointsThanks Ernest! You have won a new Twitter follower