在我的应用程序中，我正在从 sdcard 中检索图像文件。n 将路径发送回先前的活动。但我无法在以前的活动中获得路径。请帮助我。下面是代码-
第一项活动-
public class Work extends Activity {
String imagepath;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void importFile(View v){
Intent intent=new Intent(this,ImportFile.class);
startActivityForResult(intent, 1);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==1)
{
//here i wanto get image path.
}
}
}
第二个活动——
public class ImportFile extends Activity implements OnCheckedChangeListener{
TableLayout tl;
Intent i;
ImageView im;
int idcount;
Uri uri[];
Uri[] imagefiles;
String filepath[];
String[] image=new String[100];
TextView nameoffile,sizeoffile,line;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mylist);
File file = new File(Environment.getExternalStorageDirectory()
+ File.separator + "gallery" //folder name
);
if (!file.exists()) {
file.mkdirs();
}
File f = new File("/sdcard/download");
File[] files = f.listFiles();
int j=0;
for(int i = 0; i < files.length; i++,j++) {
File file1 = files[i];
//take the file name only
long size = file1.length()/1024;
String myfile = file1.getPath().substring(file1.getPath().lastIndexOf("/")+1,file1.getPath().length()).toLowerCase();
System.out.println("file is : "+files[i]);
if(myfile.endsWith(".jpeg")||myfile.endsWith(".png")|| myfile.endsWith(".gif") || myfile.endsWith(".jpg"))
{
System.out.println("file is : "+files[i]);
image[j]=file1.getAbsoluteFile().toString();
}
}
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int j;
imagesPaths = new ArrayList<String>();
// TODO Auto-generated method stub
for(j=1;j<idcount;j++){
if(ch[j].isChecked())
{
System.out.println("PPPPPPPPPPPPPPPPPP"+j);
i=new Intent();
i.putExtra("files",image[++j]);
setResult(RESULT_OK, i);
finish();
}
}
}
}