Use onConfigurationChanged method to detect the screen rotation isn't good idea. Configuration Change in this activity wouldn't works correctly when user rotate the screen.
So I use this solution to solve this problem.
public class SampleActivity extends AppCompatActivity {
public static final String KEY_LAST_ORIENTATION = "last_orientation";
private int lastOrientation;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
if (savedInstanceState == null) {
lastOrientation = getResources().getConfiguration().orientation;
}
}
@Override
protected void onStart() {
super.onStart();
checkOrientationChanged();
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
lastOrientation = savedInstanceState.getInt(KEY_LAST_ORIENTATION);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(KEY_LAST_ORIENTATION, lastOrientation);
}
private void checkOrientationChanged() {
int currentOrientation = getResources().getConfiguration().orientation;
if (currentOrientation != lastOrientation) {
onScreenOrientationChanged(currentOrientation);
lastOrientation = currentOrientation;
}
}
public void onScreenOrientationChanged(int currentOrientation) {
// Do something here when screen orientation changed
}
}
But code still not good enough to use it in my project, so I applied this code to my own library (https://github.com/akexorcist/ScreenOrientationHelper).
compile 'com.akexorcist:screenorientationhelper:<latest_version>'
You can create base activity class like this
public class BaseActivity extends AppCompatActivity implements ScreenOrientationHelper.ScreenOrientationChangeListener {
private ScreenOrientationHelper helper = new ScreenOrientationHelper(this);
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
helper.onCreate(savedInstanceState);
helper.setScreenOrientationChangeListener(this);
}
@Override
protected void onStart() {
super.onStart();
helper.onStart();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
helper.onSaveInstanceState(outState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
helper.onRestoreInstanceState(savedInstanceState);
}
@Override
public void onScreenOrientationChanged(int orientation) {
}
}
Then extend the activity with this base class
public class MainActivity extends BaseActivity {
...
@Override
public void onScreenOrientationChanged(int orientation) {
// Do something when screen orientation changed
}
}
Done!
