我有以下代码,我需要填写if(pos == 1){??????????}
,以便我可以在选择微调控制器中的第一个位置时切换活动。我的新灵活性名称是Route1.java。 如何在我的微调器中选择位置1时编写切换到Route1.java的代码。使用微调器切换活动
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Toast;
import android.Manifest.permission;
public class MyOnItemSelectedListener extends Activity
implements OnItemSelectedListener {
public void onItemSelected(AdapterView<?> parent,
View view, int pos, long id) {
if (pos == 1) {
} else {
Toast.makeText(parent.getContext(),
"Your route is "
+ parent.getItemAtPosition(pos).toString(),
Toast.LENGTH_LONG).show();
}
}
public void onNothingSelected(AdapterView parent) {
// Do nothing.
}
}
上述类此类用于
import java.lang.reflect.Array;
import android.R.array;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.widget.AbsSpinner;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
import android.widget.Toast;
public class cnycentro extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cnycentro);
Spinner spinner = (Spinner) findViewById(R.id.spinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.routes, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
}
}