Question

我有这个：

 @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

        String urlCorrecta="";


        //Si se escoge la posicion de el arreglo 0 abre la clase LasVegas
        if (position == 0)
        {
            Intent intent = new Intent(this, MainActivity.class);
            startActivity(intent);
            urlCorrecta = "souphttpsrc location=http://69.54.28.188:7878/mjpg/video.mjpg ! multipartdemux single-stream=true ! jpegdec ! autovideosink sync=false ";


        }

        //Si se escoge la posicion de el arreglo 1 abre la clase LosGuayabos
        else if (position == 1)

        {
            Intent intent = new Intent(this, LosGuayabos.class);
            startActivity(intent);

            urlCorrecta = "souphttpsrc location=http://rax1.bsn.net/mjpg/video.mjpg?streamprofile=Balanced ! multipartdemux single-stream=true ! jpegdec ! autovideosink sync=false ";

        }

        //Si se escoge la posicion de el arreglo 2 abre la clase RegionalNorte
        else if (position == 2)

        {
            Intent intent = new Intent(this, RegionalNorte.class);
            startActivity(intent);

            urlCorrecta = "souphttpsrc location=http://trackfield.webcam.oregonstate.edu/mjpg/video.mjpg ! multipartdemux single-stream=true ! jpegdec ! autovideosink sync=false ";
        }


        //Si se escoge la posicion de el arreglo 3 abre la clase RegionalSur
        else if (position == 3)

        {
            Intent intent = new Intent(this, RegionalSur.class);
            startActivity(intent);

            urlCorrecta = "souphttpsrc location=http://wmccpinetop.axiscam.net/mjpg/video.mjpg ! multipartdemux single-stream=true ! jpegdec ! autovideosink sync=false ";

        }

    }

我想将String urlCorrecta的值传递给位于MainActivity类中的String VIDEO_IN_PIPELINE。

public class MainActivity extends ActionBarActivity implements SurfaceHolder.Callback{




    private final String VIDEO_IN_PIPELINE = VALUE OF THE STRING urlCorrecta;
    private final String HOST_IP = "192.168.1.167";

}

如何将其他类中的String转换为此类？

非常感谢阅读。

Answer 1

使用额外内容：

Intent intent = new Intent(this, LosGuayabos.class);
intent.putExtra("myString", myString);
startActivity(intent);

然后你只需要在onCreate方法中获得意图：

String myString = getIntent().getExtras().getString("myString");

Answer 2

从一个活动发送字符串

Intent intent = new Intent(CurrentActivity.this, ReceiverActivity.class);
intent.puExtra("key","String Value");
startActivity(intent);

在ReceiverActivity

中获取字符串

Intent intent = getIntent();
String str = intent.getExtra().getString("key");

Answer 3

要将其传递给其他Activity，请在新Intent中将其作为额外内容添加：

Intent intent = new Intent(this, MainActivity.class);
intent.putExtra("urlCorrecta", "souphttpsrc location=http://rax1.bsn.net/mjpg/video.mjpg?streamprofile=Balanced ! multipartdemux single-stream=true ! jpegdec ! autovideosink sync=false ");
startActivity(intent);

要在MainActivity的{{1}}：

中检索它

onCreate()

试试这个。这将有效。

如何将String传递给另一个类中的另一个String变量？

3 个答案: