android: pass value from system

1) method 1
import android.os.SystemProperties;
String strResult = SystemProperties.get("hw.VIDEO_TVOUT_DISPLAY");
SystemProperties.set("hw.VIDEO_TVOUT_DISPLAY", "1");
2) method 2
Settings.System.getInt(getContentResolver(), "PlayVieo", 0);
Settings.System.putInt(getContentResolver(), "PlayVieo", 1);
import android.provider.Settings;