小编Moh*_*aib的帖子

我需要将LatLng类的实例传递给另一个intent.我该怎么办？这是代码.

LatLng fromPosition = new LatLng(23.4555453556, 11.145315551);
LatLng toPosition = new LatLng(12.1115145311, 99.333455333);

Intent i= new Intent(Maps.this, Routes.class);
        startActivity(i);

请帮帮我.

路线类:

 public class Routes extends FragmentActivity {
GoogleMap mMap;
 GMapV2Direction md;
 private String provider;
 double lati;
 double longi;
 String name;
 Location location;

Document doc;
PolylineOptions rectLine;

Bundle bundle = getIntent().getParcelableExtra("bundle");
LatLng fromPosition = bundle.getParcelable("from_position");
LatLng toPosition = bundle.getParcelable("to_position");

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.maps2);

    md = new GMapV2Direction();
    mMap = ((SupportMapFragment)getSupportFragmentManager()
                    .findFragmentById(R.id.map)).getMap();

    LatLng coordinates = fromPosition;      
    mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(coordinates, 16));

    mMap.addMarker(new …

我试图从edittext框中获取值,并且在单击按钮时,我想比较edittext框内的文本是否与某个值匹配.如果是,则应调用新意图.如果不是,则应显示错误.单击按钮后,这是我的代码...

     if(v.getId() == R.id.button1){

        id = et1.getText().toString();
        Toast toast = Toast.makeText(this, "Value of id is: " + id, Toast.LENGTH_SHORT);
        toast.show();

        if(id == "abc"){
            Intent i= new Intent(Slogin.this, Sales.class);
            startActivity(i);
        }else{
            Toast toast = Toast.makeText(this, "Wrong id pass",                                                                            Toast.LENGTH_SHORT);
            toast.show();
        }

现在的问题是,即使我输入"abc"(没有双逗号),它仍然显示错误"错误的id传递".虽然Toast清楚地表明我已输入abd并且字符串id现在保持值"abc".需要帮助......