我正在尝试从 google nexus 访问 rdf 文件.....(现在此代码能够从磁盘访问 rdf 文件)......因为 google nexus 没有 sdcard 插槽.....所以我是有问题来定义将从中检索 rdf 文件的路径....
public class andro extends Activity implements View.OnClickListener{
/** Called when the activity is first created. */
Graph graph;
Load ld;
Mappings map;
QueryProcess exec;
ResultFormat f;
RDFFormat f3;
Button runbtn;
Button clearbtn;
Button test;
Button triple;
EditText et1;
TextView tv1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.query);
clearbtn = (Button) findViewById(R.id.clear) ;
runbtn = (Button) findViewById(R.id.run);
test = (Button) findViewById(R.id.test);
triple = (Button) findViewById(R.id.rdf);
tv1 = (TextView) findViewById(R.id.output);
et1 = (EditText) findViewById(R.id.input);
clearbtn.setOnClickListener(new OnClickListener(){
public void onClick(View v){
et1.setText("");
tv1.setText("");
}
});
test.setOnClickListener(new OnClickListener(){
//runbtn.setOnClickListener(new OnClickListener(){
public void onClick(View v){
/* String op = et1.getText().toString();
tv1.setText(op);
*/
// graph = Graph.create();
graph = Graph.create(true);
ld = Load.create(graph);
ld.load("/user/roy/home/DownLoad/foaf.rdf");
// ld.load("dataset.rdf");
/*
try {
ld.loadWE("dataset.rdf");
} catch (LoadException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
*/
// String query = null;
// Mappings map = null;
// String query1 = "select * where {?x ?p ?y}";
exec = QueryProcess.create(graph);
query1 = et1.getText().toString();
try {
map = exec.query(query1);
} catch (EngineException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// f = ResultFormat.create(map);
// f3 = TripleFormat.create(map);
String f2 = ld.toString();
tv1.setText(ld);
//System.out.println(f2);
}
});
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
提前致谢....