小编mrm*_*mon的帖子

我尝试更改文本颜色并将微调器中的项目对齐到它的中心我该怎么做

这是我的代码

    String[] li={"1","2","3"};
final Spinner combo = (Spinner)findViewById(R.id.widget30);
ArrayAdapter<String> a = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, li);
combo.setAdapter(a);

谢谢

关闭我的应用程序一段时间然后再次重新打开它,我的应用程序将不会更新位置或有时需要很长时间(约5分钟)更新之前.我该如何解决？这是我的代码

  private LocationManager lm;
private LocationListener locationListener;

  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);    

    lm = (LocationManager) 
        getSystemService(Context.LOCATION_SERVICE);    

    locationListener = new mLocationListener();

    lm.requestLocationUpdates(
        LocationManager.GPS_PROVIDER, 0, 0, locationListener); }


private class myLocationListener implements LocationListener 
{
    @Override
    public void onLocationChanged(Location loc) {
        if (loc != null) {
            TextView gpsloc = (TextView) findViewById(R.id.widget28);
            gpsloc.setText("Lat:"+loc.getLatitude()+" Lng:"+ loc.getLongitude());
        }
    }

    @Override
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub
        TextView gpsloc = (TextView) findViewById(R.id.widget28);
        gpsloc.setText("GPS OFFLINE.");
    }

    @Override
    public void onProviderEnabled(String provider) { …

我正在用跳跃动作做opencv.当我尝试创建一个黑屏的窗口但窗口冻结而没有响应.有谁有这个问题？这是我的代码.

Mat PaintShow( 480,640,CV_8UC3);
int main(int argc, char* argv[])
{

    rectangle( PaintShow,Point( 0, 0),Point( 2000, 2000),Scalar( 0, 0, 0 ),-1,8 );

    // Create a sample listener and controller
    SampleListener listener;
    Leap::Controller controller;
        .
        .
        .
}

以下是每隔几毫秒更新一次的跳跃运动方法.所以我把它放在这里

void SampleListener::onFrame(const Leap::Controller& controller) 
{
    const Leap::Frame frame = controller.frame();      
    imshow("PaintShow",PaintShow);
    .
    .
    .
}