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javax.net.ssl.SSLHandshakeException: Connection closed by peer in Android 5.0 Lollipop Recently, there is a error occurs when access website via ssl connection like below although it worked fine several days ago. // Enable SSL... Create barcode import java.io.File; import java.io.FileNotFoundException; import net.sourceforge.barbecue.Barcode; import net.sourceforge.barbecue.Barcode... Enable SSL connection for Jsoup import org.jsoup.Connection; import org.jsoup.Jsoup; import javax.net.ssl.*; import java.io.IOException; import java.security.KeyManagement...
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Register preference change event with PreferenceFragment
public class DevicePreferenceFragment extends PreferenceFragment implements SharedPreferences.OnSharedPreferenceChangeListener {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.preference);
    }

    @Override
    public void onResume() {
        super.onResume();
        getPreferenceManager().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);

    }

    @Override
    public void onPause() {
        getPreferenceManager().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
        super.onPause();
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
        Log.d(MainActivity.TAG, String.format("Preference '%s' has been changed.", key));
        if ("pref_track_interval".equals(key)) {
            // do something
        }
    }
}